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Hu R, Li S, Li K, Huang T, Liu Z, Wen G. Stratified control of chemical crystallization in a pellet fluidized bed for pH-Adjusted fluoride and phosphate reduction: An experimental study. Environ Res 2024; 252:118873. [PMID: 38604484 DOI: 10.1016/j.envres.2024.118873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 03/05/2024] [Accepted: 04/03/2024] [Indexed: 04/13/2024]
Abstract
Chemical crystallization granulation in a fluidized bed offers an environmentally friendly technology with significant promise for fluoride removal. This study investigates the impact of stratified pH control in a crystallization granulation fluidized bed for the removal of fluoride and phosphate on a pilot scale. The results indicate that using dolomite as a seed crystal, employing sodium dihydrogen phosphate (SDP) and calcium chloride as crystallizing agents, and controlling the molar ratio n(F):n(P):n(Ca) = 1:5:10 with an upflow velocity of 7.52 m/h, effectively removes fluoride and phosphate. Stratified pH control-maintaining weakly acidic conditions (pH = 6-7) at the bottom and weakly alkaline conditions (pH = 7-8) at the top-facilitates the induction of fluoroapatite (FAP) and calcium phosphate crystallization. This approach reduces groundwater fluoride levels from 9.5 mg/L to 0.2-0.6 mg/L and phosphate levels to 0.1-0.2 mg/L. Particle size analysis, scanning electron microscopy-energy-dispersive X-ray spectroscopy, and X-ray diffraction physical characterizations reveal significant differences in crystal morphology between the top and bottom layers, with the lower layer primarily generating high-purity FAP crystals. Further analysis shows that dolomite-induced FAP crystallization offers distinct advantages. SDP not only dissolves on the dolomite surface to provide active sites for crystallization but also, under weakly acidic conditions, renders both dolomite and FAP surfaces negatively charged. This allows for the effective adsorption of PO43-, HPO42-, and F- anions onto the crystal surfaces. This study provides supporting data for the removal of fluoride from groundwater through induced FAP crystallization in a chemical crystallization pellet fluidized bed.
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Affiliation(s)
- Ruizhu Hu
- School of Environment and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an, 710055, China; Collaborative Innovation Center of Water Pollution Control and Water Quality Security Assurance of Shaanxi Province, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Shichang Li
- School of Environment and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an, 710055, China; Collaborative Innovation Center of Water Pollution Control and Water Quality Security Assurance of Shaanxi Province, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Kaihong Li
- School of Environment and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an, 710055, China; Collaborative Innovation Center of Water Pollution Control and Water Quality Security Assurance of Shaanxi Province, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Tinglin Huang
- School of Environment and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an, 710055, China; Collaborative Innovation Center of Water Pollution Control and Water Quality Security Assurance of Shaanxi Province, Xi'an University of Architecture and Technology, Xi'an, 710055, China.
| | - Zenan Liu
- School of Environment and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an, 710055, China
| | - Gang Wen
- School of Environment and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an, 710055, China; Collaborative Innovation Center of Water Pollution Control and Water Quality Security Assurance of Shaanxi Province, Xi'an University of Architecture and Technology, Xi'an, 710055, China
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2
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Xu Y, Yin Y, Luan YN, Wang Q, Zhao Z, Guo Z, Liu C. Efficient phosphate removal by Mg-La binary layered double hydroxides: synthesis optimization, adsorption performance, and inner mechanism. Environ Sci Pollut Res Int 2024; 31:29132-29147. [PMID: 38568311 DOI: 10.1007/s11356-024-32838-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Accepted: 03/05/2024] [Indexed: 05/01/2024]
Abstract
Layered double hydroxides (LDH) hold great promise as phosphate adsorbents; however, the conventional binary LDH exhibits low adsorption rate and adsorption capacity. In this study, Mg and La were chosen as binary metals in the synthesis of Mg-La LDH to enhance phosphate efficient adsorption. Different molar ratios of Mg to La (2:1, 3:1, and 4:1) were investigated to further enhance P adsorption. The best performing Mg-La LDH, with Mg to La ratio is 4:1 (LDH-4), presented a larger adsorption capacity and faster adsorption rate than other Mg-La LDH. The maximum adsorption capacity (87.23 mg/g) and the rapid adsorption rate in the initial 25 min of LDH-4 (70 mg/(g·h)) were at least 1.6 times and 1.8 times higher than the others. The kinetics, isotherms, the effect of initial pH and co-existing anions, and the adsorption-desorption cycle experiment were studied. The batch experiment results proved that the chemisorption progress occurred on the single-layered LDH surface and the optimized LDH exhibited strong anti-interference capability. Furthermore, the structural characteristics and adsorption mechanism were further investigated by SEM, BET, FTIR, XRD, and XPS. The characterization results showed that the different metal ratios could lead to changes in the metal hydroxide layer and the main ions inside. At lower Mg/La ratios, distortion occurred in the hydroxide layer, resulting in lower crystallinity and lower performance. The characterization results also proved that the main mechanisms of phosphate adsorption are electrostatic adsorption, ion exchange, and inner-sphere complexation. The results emphasized that the Mg-La LDH was efficient in phosphate removal and could be successfully used for this purpose.
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Affiliation(s)
- Yanming Xu
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, 266520, China
| | - Yue Yin
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, 266520, China
| | - Ya-Nan Luan
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, 266520, China
| | - Qing Wang
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, 266520, China
| | - Zhuo Zhao
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, 266520, China
| | - Zhonghong Guo
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, 266520, China
| | - Changqing Liu
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, 266520, China.
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3
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Fang X, Zhang D, Chang Z, Li R, Meng S. Phosphorus removal from water by the metal-organic frameworks (MOFs)-based adsorbents: A review for structure, mechanism, and current progress. Environ Res 2024; 243:117816. [PMID: 38056614 DOI: 10.1016/j.envres.2023.117816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 11/14/2023] [Accepted: 11/27/2023] [Indexed: 12/08/2023]
Abstract
Efficacious phosphate removal is essential for mitigating eutrophication in aquatic ecosystems and complying with increasingly stringent phosphate emission regulations. Chemical adsorption, characterized by simplicity, prominent treatment efficiency, and convenient recovery, is extensively employed for profound phosphorus removal. Metal-organic frameworks (MOFs)-derived metal/carbon composites, surpassing the limitations of separate components, exhibit synergistic effects, rendering them tremendously promising for environmental remediation. This comprehensive review systematically summarizes MOFs-based materials' properties and their structure-property relationships tailored for phosphate adsorption, thereby enhancing specificity towards phosphate. Furthermore, it elucidates the primary mechanisms influencing phosphate adsorption by MOFs-based composites. Additionally, the review introduces strategies for designing and synthesizing efficacious phosphorus capture and regeneration materials. Lastly, it discusses and illuminates future research challenges and prospects in this field. This summary provides novel insights for future research on superlative MOFs-based adsorbents for phosphate removal.
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Affiliation(s)
- Xiaojie Fang
- Department of Resources and Environmental Science, Northeast Agricultural University, Harbin, Heilongjiang, 150030, China
| | - Di Zhang
- Department of Resources and Environmental Science, Northeast Agricultural University, Harbin, Heilongjiang, 150030, China; Key Laboratory of Black Soil Protection and Restoration, Harbin, Heilongjiang, 150030, China.
| | - Zhenfeng Chang
- Department of Resources and Environmental Science, Northeast Agricultural University, Harbin, Heilongjiang, 150030, China
| | - Ruoyan Li
- Department of Resources and Environmental Science, Northeast Agricultural University, Harbin, Heilongjiang, 150030, China
| | - Shuangshuang Meng
- Department of Resources and Environmental Science, Northeast Agricultural University, Harbin, Heilongjiang, 150030, China
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4
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Mahmoud ME, Obada MK, Nabil GM. Enhanced removing of phosphate ions from agricultural drainage wastewater by using microwave-assisted synthesized attapulgite (Fullers earth) @carboxymethylcellulose nanocomposite. Int J Biol Macromol 2024; 255:128081. [PMID: 37977453 DOI: 10.1016/j.ijbiomac.2023.128081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Revised: 11/08/2023] [Accepted: 11/12/2023] [Indexed: 11/19/2023]
Abstract
Contamination of various water resources with phosphate pollutant owing to the excessive use of phosphate fertilizers was labeled by dangerous consequences. Most of the water remediation methods are not efficient for phosphate recovery and always generate secondary wastes. Therefore, the current study is aimed to prepare a novel ecofriendly and sustainable APT500@CMC nanocomposite via simple covalent binding of thermally treated attapulgite clay at 500 °C (APT500) with carboxymethyl cellulose (CMC) using microwave irradiation process. The assembled nanocomposite was confirmed by diverse techniques. The optimum conditions for efficient 10, 25 and 50 mg/L PO43- removal were detected at pH 3, time 30 min, temperature 25 °C and mass 200 mg. The kinetic and isotherms were fitted both to a combination of pseudo 1st - 2nd orders and Langmuir model, while thermodynamic parameters verified PO43- removal via spontaneous and exothermic reaction behavior. The mode of interaction and binding of PO43- ions onto the surface of APT500@CMC were suggested via ion-pair interaction process. Excellent PO43- recovery (98.8 %) from real agricultural drainage wastewater was established. The explored APT500@CMC afforded good stability for five regeneration cycles. Therefore, the collected results confirm the validity of APT500@CMC for excellent removal of PO43- from real agricultural drainage wastewater.
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Affiliation(s)
- Mohamed E Mahmoud
- Faculty of Sciences, Chemistry Department, Alexandria University, P.O. Box 426, Ibrahimia 21321, Alexandria, Egypt.
| | - Mohammed K Obada
- Egyptian Projects Operation & Maintenance Co. (EPROM), Petroleum complex, Alexandria, Egypt
| | - Gehan M Nabil
- Department of Chemistry, College of Science and Humanities in Al-Kharj, Prince Sattam Bin Abdulaziz University, Al-Kharj, 11942, Saudi Arabia
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5
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Zhao X, Xie Y, Sun B, Liu Y, Zhu S, Li W, Zhao M, Liu D. Unraveling microbial characteristics of simultaneous nitrification, denitrification and phosphorus removal in a membrane-aerated biofilm reactor. Environ Res 2023; 239:117402. [PMID: 37838199 DOI: 10.1016/j.envres.2023.117402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 10/04/2023] [Accepted: 10/11/2023] [Indexed: 10/16/2023]
Abstract
This study describes the simultaneous removal of carbon, ammonium, and phosphate from domestic wastewater by a membrane-aerated biofilm reactor (MABR) which was operated for 360 days. During the operation, the maximum removal efficiencies of chemical oxygen demand (COD), total nitrogen (TN) and total phosphorus (TP) reached 93.1%, 83.98%, and 96.41%, respectively. Statistical analysis showed that the MABR could potentially treat wastewater with a high ammonium concentration and a relatively low C/N ratio. Dissolved oxygen and multiple pollutants, including ammonium, carbon, phosphate, and sulfate, shaped the structure of the microbial community in the MABR. High throughput sequencing uncovered the crucial microbiome in ammonium transformation in MABR. Phylogenetic analysis of the ammonia monooxygenase (amoA) genes revealed an important role for comammox Nitrospira in the nitrification process. Diverse novel phosphate-accumulating organisms (Thauera, Bacillus, and Pseudomonas) and sulfur-oxidizing bacteria (Thiobacillus, Thiothrix and Sulfurimonas) were potentially involved in denitrification in MABR. The results from this study suggested that MABR could be a feasible system for the simultaneous removal of nitrogen, carbon, phosphorus, and sulfur from sewage water.
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Affiliation(s)
- Xin Zhao
- Key Laboratory of Equipment and Informatization in Environment Controlled Agriculture from Ministry of Agriculture and Rural Affairs of China, Key Laboratory of Intelligent Equipment and Robotics for Agriculture of Zhejiang Province, Institute of Agri-biological Environment Engineering, Zhejiang University, Hangzhou, 310058, China; National & Local Joint Engineering Research Center of Ecological Treatment Technology for Urban Water Pollution, College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, China
| | - Yinglong Xie
- Key Laboratory of Equipment and Informatization in Environment Controlled Agriculture from Ministry of Agriculture and Rural Affairs of China, Key Laboratory of Intelligent Equipment and Robotics for Agriculture of Zhejiang Province, Institute of Agri-biological Environment Engineering, Zhejiang University, Hangzhou, 310058, China; College of Environment, Zhejiang University of Technology, 310014 Hangzhou, China
| | - Bo Sun
- National & Local Joint Engineering Research Center of Ecological Treatment Technology for Urban Water Pollution, College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, China
| | - Ying Liu
- Key Laboratory of Equipment and Informatization in Environment Controlled Agriculture from Ministry of Agriculture and Rural Affairs of China, Key Laboratory of Intelligent Equipment and Robotics for Agriculture of Zhejiang Province, Institute of Agri-biological Environment Engineering, Zhejiang University, Hangzhou, 310058, China
| | - Songming Zhu
- Key Laboratory of Equipment and Informatization in Environment Controlled Agriculture from Ministry of Agriculture and Rural Affairs of China, Key Laboratory of Intelligent Equipment and Robotics for Agriculture of Zhejiang Province, Institute of Agri-biological Environment Engineering, Zhejiang University, Hangzhou, 310058, China
| | - Wei Li
- Research Center for Eco-environmental Engineering, Dongguan University of Technology, Dongguan, 523808, China
| | - Min Zhao
- National & Local Joint Engineering Research Center of Ecological Treatment Technology for Urban Water Pollution, College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, China.
| | - Dezhao Liu
- Key Laboratory of Equipment and Informatization in Environment Controlled Agriculture from Ministry of Agriculture and Rural Affairs of China, Key Laboratory of Intelligent Equipment and Robotics for Agriculture of Zhejiang Province, Institute of Agri-biological Environment Engineering, Zhejiang University, Hangzhou, 310058, China.
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6
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Singh N, Srivastava I, Nagar P, Sankararamakrishnan N. Studies on ultrafast and remarkable removal of phosphate from sewage water by metal-organic frameworks. Environ Monit Assess 2023; 195:1378. [PMID: 37882833 DOI: 10.1007/s10661-023-11962-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 10/05/2023] [Indexed: 10/27/2023]
Abstract
In the proposed research, a lanthanum-doped metal-organic framework (La-ATP) has been synthesised to remove phosphate from contaminated aqueous solutions. La-ATP was synthesised by a green energy-saving route using microwave irradiation and exhibited a phenomenal sorption capacity of 290 mg/g for the removal of phosphate. At a minimal dose of 0.1 g/L, 25 mg/L of phosphate gets reduced to 6.3 mg/L within 5 min and reaches equilibrium in 25 min. The isoelectric point of La-ATP was found to be 8.99, and it is efficient in removing phosphate over a wide range of pH 5-10. The existence of commonly occurring competing anions like sulphate, fluoride, chloride, arsenate, bicarbonate, and nitrate does not affect the uptake capacity of La-ATP towards phosphate ions. Furthermore, the robustness of La-ATP is demonstrated by its applicability to remove phosphate from real-life sewage water by reducing 10 mg/L of phosphorus from sewage water to < 0.02 mg/L. The primary mechanism governing phosphate removal was found to be ionic interaction and ligand exchange. Therefore, La-ATP can be considered a viable candidate for the treatment of eutrophic water streams because of its high sorption capacity, super-fast kinetics, and adaptability to contaminated sewage.
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Affiliation(s)
- Neha Singh
- Centre for Environmental Science and Engineering, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh, 208016, India
| | - Ila Srivastava
- Centre for Environmental Science and Engineering, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh, 208016, India
| | - Pavan Nagar
- Centre for Environmental Science and Engineering, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh, 208016, India
- Department of Civil Engineering, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh, 208016, India
| | - Nalini Sankararamakrishnan
- Centre for Environmental Science and Engineering, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh, 208016, India.
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7
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Hu Z, Hu S, Hong PY, Zhang X, Prodanovic V, Zhang K, Ye L, Deletic A, Yuan Z, Zheng M. Impact of electrochemically generated iron on the performance of an anaerobic wastewater treatment process. Sci Total Environ 2023; 875:162628. [PMID: 36889383 DOI: 10.1016/j.scitotenv.2023.162628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 02/26/2023] [Accepted: 02/28/2023] [Indexed: 06/18/2023]
Abstract
Anaerobic treatment of domestic wastewater has the advantages of lower biomass yield, lower energy demand and higher energy recover over the conventional aerobic treatment process. However, the anaerobic process has the inherent issues of excessive phosphate and sulfide in effluent and superfluous H2S and CO2 in biogas. An electrochemical method allowing for in-situ generation of Fe2+ in the anode and hydroxide ion (OH-) and H2 in the cathode was proposed to overcome the challenges simultaneously. The effect of electrochemically generated iron (e‑iron) on the performance of anaerobic wastewater treatment process was explored with four different dosages in this work. The results showed that compared to control, the experimental system displayed an increase of 13.4-28.4 % in COD removal efficiency, 12.0-21.3 % in CH4 production rate, 79.8-98.5 % in dissolved sulfide reduction, 26.0-96.0 % in phosphate removal efficiency, depending on the e‑iron dosage between 40 and 200 mg Fe/L. Dosing of the e‑iron significantly upgraded the quality of produced biogas, showing a much lower CO2 and H2S contents in biogas in experimental reactor than that in control reactor. The results thus demonstrated that e‑iron can significantly improve the performance of anaerobic wastewater treatment process, bringing multiple benefits with the increase of its dosage regarding effluent and biogas quality.
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Affiliation(s)
- Zhetai Hu
- Australian Centre for Water and Environmental Biotechnology, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Shihu Hu
- Australian Centre for Water and Environmental Biotechnology, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Pei-Ying Hong
- Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, SA 23955, Saudi Arabia
| | - Xueqin Zhang
- Australian Centre for Water and Environmental Biotechnology, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Veljko Prodanovic
- School of Civil and Environmental Engineering, UNSW Sydney, NSW 2052, Australia
| | - Kefeng Zhang
- School of Civil and Environmental Engineering, UNSW Sydney, NSW 2052, Australia
| | - Liu Ye
- School of Chemical Engineering, The University of Queensland, St Lucia, Brisbane, QLD 4072, Australia
| | - Ana Deletic
- School of Civil and Environmental Engineering, UNSW Sydney, NSW 2052, Australia; School of Civil and Environmental Engineering, Engineering Faculty, Queensland University of Technology, QLD 4001, Australia
| | - Zhiguo Yuan
- Australian Centre for Water and Environmental Biotechnology, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Min Zheng
- Australian Centre for Water and Environmental Biotechnology, The University of Queensland, St Lucia, QLD 4072, Australia.
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8
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Luo J, Peng J, Zhong Z, Long X, Yang J, Li R, Wan J. A novel calcium peroxide/attapulgite-Fe(II) process for high concentration phosphate removal and recovery: Efficiency and mechanism. J Environ Manage 2023; 343:118166. [PMID: 37229855 DOI: 10.1016/j.jenvman.2023.118166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 05/01/2023] [Accepted: 05/11/2023] [Indexed: 05/27/2023]
Abstract
Phosphorus (P) has been overused in livestock farming, which inevitably results in high-concentration P-containing wastewater. Managing total phosphorus discharge is important to prevent eutrophication in aquatic environments, thus it is critical to develop new technologies for the removal and recovery of high-concentration phosphate. In this study, a novel calcium peroxide/attapulgite (CP/ATP) composite was developed and coupled with Fe(II) for high-concentration phosphate removal and recovery. The results demonstrated that the optimal dosage of the CP/ATP-Fe(II) process was CP/ATP = 0.25 g/L and Fe(II) = 2 mM. The pH effect on phosphate removal was minimal, while phosphate removal efficiency rose by 16.7% with the temperature increased from 10 °C to 25 °C. The co-existing ions exhibited little effect on phosphate removal, and the CP/ATP-Fe(II) process showed effective phosphate removal from the real piggery wastewater. The P content of the precipitates after phosphate removal by this process was as high as 25.82%, indicating its good potential for P recycling. A significant synergistic effect existed in CP/ATP and Fe(II) for phosphate removal, and the SEM-EDS, XRD, Raman and XPS characterization exhibited that the phosphate removal mainly relied on the in-situ-formed Fe(III) and the participation of calcium (Ca) species. Co-precipitation was the predominant mechanism for phosphate removal, and the proportions of Fe(III)-P, Ca-P and Ca-Fe(III)-P in the precipitates were 51.5%, 31.2% and 17.3%, respectively. This study provides a highly efficient process for phosphate removal and recovery from wastewater, and insights into interactions among phosphorus, iron and calcium.
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Affiliation(s)
- Jun Luo
- School of Environmental Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Jia Peng
- School of Environmental Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Zhenxing Zhong
- School of Environmental Engineering, Wuhan Textile University, Wuhan 430200, China; State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430200, China; Engineering Research Center of Ministry of Education for Clean Production of Textile Dyeing and Printing, Wuhan Textile University, Wuhan 430200, China
| | - Xuejun Long
- School of Environmental Engineering, Wuhan Textile University, Wuhan 430200, China; State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430200, China; Engineering Research Center of Ministry of Education for Clean Production of Textile Dyeing and Printing, Wuhan Textile University, Wuhan 430200, China.
| | - Jiazhi Yang
- School of Environmental Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Rui Li
- School of Environmental Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Jun Wan
- School of Environmental Engineering, Wuhan Textile University, Wuhan 430200, China; State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430200, China; Engineering Research Center of Ministry of Education for Clean Production of Textile Dyeing and Printing, Wuhan Textile University, Wuhan 430200, China.
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9
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Ouyang S, Wu L, Xiang M, Zou Y, Zhu Z, Zhang P. Insights into the mechanism involved by electric double layer on phosphate removal of metal-bearing environmental remediation agent: Taking tricalcium aluminate as representative. Environ Res 2023; 225:115637. [PMID: 36889564 DOI: 10.1016/j.envres.2023.115637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Revised: 02/23/2023] [Accepted: 03/04/2023] [Indexed: 06/18/2023]
Abstract
Metal-bearing materials are known to be desirable environmental captures for phosphate removal, yet few studies focus on understanding the reaction process, especially formed a special phenomenon, i.e., electric double layer (EDL), which might influence the phosphate removal. To fill in this gap, we fabricated metal-bearing tricalcium aluminate (C3A, Ca3Al2O6) as representative, to remove phosphate and unveil the impact by electric double layer (EDL). Specifically, a preeminent removal capacity of 142.2 mg·g-1 was achieved at the initial phosphate concentration below 300 mg·L-1. Following thorough the characterizations, the process was that the released Ca2+ or Al3+ of C3A formed positive charged stern layer attracted phosphate to generate Ca or Al-precipitation. At high phosphate concentration (>300 mg·L-1), C3A exhibited inferior removal capability for phosphate (<45 mg·g-1), due to the aggregation of C3A particles with low water permeability under the EDL effect, obstructing Ca2+ and Al3+ to release for phosphate removal. In addition, the feasibility application of C3A was evaluated based on response surface methodology (RSM), highlighting its prospective phosphate treatment. This work not only provides a theoretical guidance for the application of C3A to remove phosphate, but also deepens the understand of phosphate removal mechanism by metal-bearing materials, shedding light on environmental remediation.
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Affiliation(s)
- Sida Ouyang
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resources Environmental and Chemical Engineering, Nanchang University, Nanchang, 330031, PR China
| | - Longyong Wu
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resources Environmental and Chemical Engineering, Nanchang University, Nanchang, 330031, PR China
| | - Mingxue Xiang
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resources Environmental and Chemical Engineering, Nanchang University, Nanchang, 330031, PR China
| | - Youqin Zou
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resources Environmental and Chemical Engineering, Nanchang University, Nanchang, 330031, PR China
| | - Zhongbang Zhu
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resources Environmental and Chemical Engineering, Nanchang University, Nanchang, 330031, PR China
| | - Ping Zhang
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resources Environmental and Chemical Engineering, Nanchang University, Nanchang, 330031, PR China.
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10
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Zong E, Zhang C, Wu S, Gao Y, Yang J, Liu X, Song P. Titanium dioxide nanoparticles functionalized chitosan toward bio-based antibacterial adsorbent for enhanced phosphate capture. Int J Biol Macromol 2023; 241:124511. [PMID: 37086773 DOI: 10.1016/j.ijbiomac.2023.124511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 03/30/2023] [Accepted: 04/15/2023] [Indexed: 04/24/2023]
Abstract
Developing an eco-friendly, sustainable and antibacterial adsorbent is significant for actual water treatment. Herein, a new bio-based antibacterial adsorbent based on titanium dioxide (TiO2) nanoparticles functionalized chitosan (CS) was prepared through an in-situ hydrolysis strategy using titanium oxysulfate as the source of TiO2. The as-obtained CS/TiO2 nanocomposite was characterized by a variety of analytical techniques. According to the Langmuir mode, the adsorption capacity of CS/TiO2 reached 23.64 mg P g-1, almost 8 times higher than that of CS. In addition, the normalized adsorption capacity (adsorption value per Ti) of CS/TiO2 was calculated to be 102.68 mg P g-1 Ti-1, much higher than pure TiO2 (60.11 mg P g-1 Ti-1). Moreover, CS/TiO2 exhibited a highly selective capacity for phosphate removal in the presence of competing anions, and showed high stability in a wide pH range of 3.0-9.0. When the phosphate concentration was 2.0 mg P L-1, the removal efficiency of phosphate reached 99.5 % and the residual concentration was only 10 μg P L-1, which meets the USEPA standards for eutrophication prevention and control. In addition, after treatment by CS/TiO2, the phosphate concentration of two sewage water samples decreased from 1.50 and 1.0 mg P L-1 to <0.010 mg P L-1, meeting the standard of level II water based on the Environmental Quality Standard of China (GB3838-2002). Ligand exchange and electrostatic interactions are mainly responsible for phosphate adsorption by CS/TiO2. Furthermore, the CS/TiO2 nanocomposites exhibited excellent antibacterial activity, which could avoid biofouling contamination caused by microorganisms. Benefiting from the above advantages, the as-designed CS/TiO2 nanocomposite has great potential as a bio-based antibacterial adsorbent for phosphate removal or capture from wastewater.
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Affiliation(s)
- Enmin Zong
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, College of Life Science, Taizhou University, Taizhou 318000, PR China; School of Earth Science and Engineering, Nanjing University, Nanjing 210093, PR China
| | - Chengyi Zhang
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, College of Life Science, Taizhou University, Taizhou 318000, PR China
| | - Shaoning Wu
- School of Engineering, Zhejiang A & F University, 666 Wusu Street, Hangzhou 311300, PR China
| | - Yijun Gao
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, College of Life Science, Taizhou University, Taizhou 318000, PR China
| | - Jiayao Yang
- School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, PR China
| | - Xiaohuan Liu
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, College of Life Science, Taizhou University, Taizhou 318000, PR China.
| | - Pingan Song
- Centre for Future Materials, School of Agriculture and Environmental Science, University of Southern Queensland, Springfield Central 4300, Australia.
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11
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Oktor K, Yuzer NY, Hasirci G, Hilmioglu N. Optimization of Removal of Phosphate from Water by Adsorption Using Biopolymer Chitosan Beads. Water Air Soil Pollut 2023; 234:271. [PMID: 37064075 PMCID: PMC10088684 DOI: 10.1007/s11270-023-06230-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Accepted: 03/11/2023] [Indexed: 06/19/2023]
Abstract
The need for clean water is the most basic human right. Water scarcity will be one important environmental problem of all countries in the future. Phosphate is a harmful matter for public health and the environment. In this study, the removal of phosphate from water by chitosan, which is an environmentally friendly material, was investigated. Chitosan adsorbent spheres were prepared for phosphate separation from water by adsorption, which is a feasible method. The effects of phosphate concentration, adsorbent dosage, and operation time on the removal were investigated. The removal increased with acid concentration and adsorbent amount. The maximum adsorption capacity of chitosan beads is 87.26 mg/g. Adsorption behavior of the chitosan beads were examined by Langmuir and Freundlich isotherms and pseudo-first and second-order kinetic models. The adsorption process was optimized by the response surface method (RSM). Trial version of Design Expert® 12.0 was used in the study. It has been understood as a result of the RSM statistical analysis that higher phosphate removal values would be obtained by increasing the amount of adsorbent. ANOVA analysis showed that adsorbent dosage had the biggest effect on removal of phosphate using chitosan beads prepared for adsorption.
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Affiliation(s)
- Kadriye Oktor
- Department of Environmental Engineering, Kocaeli University, 41001 İzmit, Kocaeli Turkey
| | - Nazlı Yenihan Yuzer
- Department of Chemical Engineering, Kocaeli University, 41001 İzmit, Kocaeli Turkey
| | - Guler Hasirci
- Department of Chemical Engineering, Kocaeli University, 41001 İzmit, Kocaeli Turkey
| | - Nilufer Hilmioglu
- Department of Chemical Engineering, Kocaeli University, 41001 İzmit, Kocaeli Turkey
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12
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Molina RE, Bohrer BM, Mejia SMV. Phosphate alternatives for meat processing and challenges for the industry: A critical review. Food Res Int 2023; 166:112624. [PMID: 36914330 DOI: 10.1016/j.foodres.2023.112624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 01/03/2023] [Accepted: 02/17/2023] [Indexed: 02/23/2023]
Abstract
Meat and meat products provide high levels of nutrition and many health benefits to consumers, yet a controversy exists regarding the use of non-meat additives, such as the inorganic phosphates that are commonly used in meat processing, and particularly their relationship to cardiovascular health and kidney complications. Inorganic phosphates are salts of phosphoric acid (e.g., sodium phosphate, potassium phosphate, or calcium phosphate), whereas organic phosphates are ester compounds (e.g., the phospholipids found in cell membranes). In this sense, the meat industry remains active in its efforts to improve formulations for processed meat products with the use of natural ingredients. Despite efforts to improve formulations, many processed meat products still contain inorganic phosphates, which are used for their technological contributions to meat chemistry including improvements in water-holding capacity and protein solubilization. This review provides a thorough evaluation of phosphate substitutes in meat formulations and other processing technologies that can help eliminate phosphates from the formulations of processed meat products. In general, several ingredients have been evaluated as replacements for inorganic phosphates with varying degrees of success such as plant-based ingredients (e.g., starches, fibers, or seeds), fungi ingredients (e.g., mushrooms and mushroom extracts), algae ingredients, animal-based ingredients (e.g., meat/seafood, dairy, or egg materials), and inorganic compounds (i.e., minerals). Although these ingredients have shown some favorable effects in certain meat products, none have exactly matched the many functions of inorganic phosphates, so the support of extrinsic technologies, such as tumbling, ultrasound, high-pressure processing (HPP), and pulsed electric field (PEF), may be necessary to achieve similar physiochemical properties as conventional products. The meat industry should continue to investigate ways to scientifically innovate the formulations of, and the technologies used in, processed meat products while also listening to (and acting upon) the feedback from consumers.
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Affiliation(s)
- Rafael Eduardo Molina
- Departamento de producción animal, Facultad de Medicina Veterinaria y de Zootecnia, Universidad Nacional de Colombia. Carrera 30, #45-03, Edificio 561A, 111321 Bogotá, Colombia
| | - Benjamin M Bohrer
- Department of Animal Sciences. The Ohio State University. 2029, Fyffe Road, Columbus OH 43210, United States
| | - Sandra Milena Vásquez Mejia
- Departamento de producción animal, Facultad de Medicina Veterinaria y de Zootecnia, Universidad Nacional de Colombia. Carrera 30, #45-03, Edificio 561A, 111321 Bogotá, Colombia.
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13
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Zhou X, Bi X, Huang S, Ng HY. Effect of mixing iron-containing sludge to domestic wastewater on wastewater characteristics under different conditions: types of domestic wastewater, varying pH and mixing ratios. Environ Res 2023; 220:115241. [PMID: 36621547 DOI: 10.1016/j.envres.2023.115241] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Revised: 12/18/2022] [Accepted: 01/05/2023] [Indexed: 06/17/2023]
Abstract
Large volumes of iron-containing sludge (Fe-Sludge) would be generated with the application of iron salts in drinking water treatment plants, which must be disposed appropriately. One of the common disposal solutions for Fe-Sludge is through direct disposal into the municipal sewer system, whereby it would be mixed with domestic wastewater and treated in the wastewater treatment plant. To better understand the properties of Fe-Sludge and the effect of dosing Fe-Sludge to the real domestic wastewater (WW) on the wastewater characteristics, a serial batch tests were conducted on a local wastewater reclamation plant (WRP). It was found that the impact of dosing Fe-Sludge at a Fe/P ratio of 5 did not vary with the types of WW, i.e., filtered or non-filtered by the 5 mm screen. In addition, the soluble organic, phosphate and total soluble iron concentrations mostly decreased with the dosing of Fe-Sludge within the dosage range of 0-5 (Fe/P ratio). In contrast, the suspended solid (SS) and volatile suspended solid (VSS) concentrations increased with the dosage of Fe-Sludge within the dosage range of 0-5 (Fe/P ratio). Furthermore, the pH condition of the domestic wastewater affected the phosphate removal efficiency by Fe-Sludge and influenced the total soluble iron concentration and iron species distribution. These findings will provide fundamental support for the further study of the effect of Fe-Sludge on the biological treatment performance and membrane filtration performance of the membrane bioreactor (MBR) system.
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Affiliation(s)
- Xiaolin Zhou
- State and Local Joint Engineering Research Centre of Urban Wastewater Treatment and Reclamation, School of Environmental and Municipal Engineering, Qingdao University of Technology, 11 Fushun Road, Qingdao, 266033, China
| | - Xuejun Bi
- State and Local Joint Engineering Research Centre of Urban Wastewater Treatment and Reclamation, School of Environmental and Municipal Engineering, Qingdao University of Technology, 11 Fushun Road, Qingdao, 266033, China
| | - Shujuan Huang
- State and Local Joint Engineering Research Centre of Urban Wastewater Treatment and Reclamation, School of Environmental and Municipal Engineering, Qingdao University of Technology, 11 Fushun Road, Qingdao, 266033, China.
| | - How Yong Ng
- Center for Water Research, Advanced Institute of Natural Sciences, Beijing Normal University at Zhuhai, 519087, China.
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14
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Jing X, Li Y, Shen Y, Li Q, Fang Q. Constructing 3D flower-like LaFe bimetal oxides with abundant mesoporous and controllable active sites for high-efficient phosphorus removal: Synthesis, mechanism, and application. Sci Total Environ 2023; 859:160334. [PMID: 36410488 DOI: 10.1016/j.scitotenv.2022.160334] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 10/24/2022] [Accepted: 11/16/2022] [Indexed: 06/16/2023]
Abstract
The design of high-performance porous adsorbents for phosphorus removal is a persistently hot topic to maintain a sustainable aquatic ecosystem. In the present study, a self-templating strategy using LaFe cyanometallates (CMs) as precursors was adopted to prepare porous LaFe bimetal oxides with optimizable structure and composition for phosphate adsorption. The results showed that a high supplied LaIII/FeII ratio enabled an adequate coordination polymerization in the preparation of LaFe CM precursor and led to a striking three-dimensional (3D) structure of "twin lotus flower" with high coordinated water content, which resulted in a 3D flower-like LaFe oxide with high surface area and high porosity (mainly in mesopore). The LaFe oxide of LaFe15T possessing the optimal La/Fe ratio (1.5: 1) exhibited the most superior performance of phosphate adsorption, where La was confirmed to be the main active site for phosphate capture via ligand exchange mechanism. The batch and column tests of phosphate adsorption showed that the 3D flower-like LaFe oxides are effective adsorbents for phosphate removal. Therefore, the structure optimization in the template preparation stage is an effective strategy to design porous LaFe bimetal oxides as high-performance phosphorus removal materials.
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Affiliation(s)
- Xiaoxu Jing
- Advanced Institute of Natural Sciences, Beijing Normal University at Zhuhai, Zhuhai 519087, PR China; Sichuan Provincial Sci-Tech Cooperation Base of Low-cost Wastewater Treatment Technology, Department of Environmental Engineering, Southwest University of Science and Technology, Mianyang 621010, PR China
| | - Yungui Li
- Sichuan Provincial Sci-Tech Cooperation Base of Low-cost Wastewater Treatment Technology, Department of Environmental Engineering, Southwest University of Science and Technology, Mianyang 621010, PR China
| | - Yi Shen
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Qingqing Li
- Advanced Institute of Natural Sciences, Beijing Normal University at Zhuhai, Zhuhai 519087, PR China
| | - Qile Fang
- Advanced Institute of Natural Sciences, Beijing Normal University at Zhuhai, Zhuhai 519087, PR China; State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, PR China.
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15
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Sang M, Weng J, Chen X, Nie G. Renewable cellulose aerogel embedded with nano-HFO for preferable phosphate capture from aqueous solution. Environ Sci Pollut Res Int 2023; 30:26613-26624. [PMID: 36371568 DOI: 10.1007/s11356-022-24087-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 11/03/2022] [Indexed: 06/16/2023]
Abstract
Excess phosphate in water can cause eutrophication, which must be addressed. Despite many efforts devoted to the adsorptive removal of phosphate from water, the development of new adsorbents with high adsorption capacity is highly desirable. Herein, a novel nanocomposite was proposed for phosphate removal by confining hydrated ferric oxide (HFO) nanoparticles into a cellulose aerogel (CA) network named as HFO@CA. Benefiting from the characteristics of the low density and porous structure of CA, the internal surface of the nanocomposite is more accessible and thus improves the utilization of the HFO nanoparticles. Batch adsorption experiments were carried out to evaluate the phosphate uptake by the prepared adsorbent. The maximum adsorption capacity of HFO@CA occurs at near-acidic pH. With increasing temperature, the composite adsorbent is more favorable for phosphate adsorption. Moreover, the hybrid aerogel exhibited fast kinetic behavior for phosphate removal, which could be accurately depicted by pseudo-second-order model. HFO@CA shows excellent adsorption selectivity in solutions containing competitive anions at higher levels. In addition, five cycles of the phosphate adsorption experiments without obvious capacity loss indicated that HFO@CA has great regenerability. These results demonstrate that HFO@CA has a wide field of application with good prospects in phosphate removal from wastewater, which also provides a new strategy to prepare adsorbents with excellent performance using renewable cellulose resources.
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Affiliation(s)
- Min Sang
- School of Environmental Science and Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Jingyi Weng
- School of Environmental Science and Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Xiaoxuan Chen
- School of Environmental Science and Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Guangze Nie
- School of Environmental Science and Engineering, Nanjing Tech University, Nanjing, 211816, China.
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16
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Gao W, Li Z, Yin S, Zhang M, Liu X, Liu Y. Phosphate removal from aqueous solutions with a zirconium-loaded magnetic biochar composite: performance, recyclability, and mechanism. Environ Sci Pollut Res Int 2023; 30:1938-1948. [PMID: 35927400 DOI: 10.1007/s11356-022-22354-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 07/28/2022] [Indexed: 06/15/2023]
Abstract
Phosphate (P) removal is significant for water pollution control. In this paper, a novel penicillin biochar modified with zirconium (ZMBC) was synthesized and used to adsorb P in water. The results showed that ZMBC had a porous structure and magnetic properties, and the zirconium (Zr) was mainly present in the form of an amorphous oxide. P adsorption displayed strong pH dependence. The Freundlich model described the adsorption process well, and the saturated adsorption capacity was 27.97 mg/g (25 ℃, pH = 7). The adsorption kinetics were consistent with the pseudo-second-order model, and the adsorption rates were jointly controlled by the surface adsorption stage and intraparticle diffusion stage. Coexisting anion experiments showed that CO32- inhibited P adsorption, reducing the adsorption capacity by 62.63%. The adsorbed P was easily desorbed by washing with a 1 M NaOH solution, and after 5 cycles, the adsorbent had almost the same capacity. The mechanism for P adsorption was inner-sphere complexation and electrostatic adsorption.
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Affiliation(s)
- Wei Gao
- School of Civil Engineering, Hebei University of Science and Technology, Shijiazhuang, 050018, China
- Pollution Prevention Biotechnology Laboratory of Hebei Province, Shijiazhuang, 050018, China
| | - Zaixing Li
- Pollution Prevention Biotechnology Laboratory of Hebei Province, Shijiazhuang, 050018, China
- School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, 050018, China
| | - Sijie Yin
- Pollution Prevention Biotechnology Laboratory of Hebei Province, Shijiazhuang, 050018, China
- School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, 050018, China
| | - Miaoyu Zhang
- Pollution Prevention Biotechnology Laboratory of Hebei Province, Shijiazhuang, 050018, China
- School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, 050018, China
| | - Xiaoshuai Liu
- Pollution Prevention Biotechnology Laboratory of Hebei Province, Shijiazhuang, 050018, China
- School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, 050018, China
| | - Yanfang Liu
- Pollution Prevention Biotechnology Laboratory of Hebei Province, Shijiazhuang, 050018, China.
- School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, 050018, China.
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17
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Yang Y, Liu J, Xue T, Hanamoto S, Wang H, Sun P, Zhao L. Complex behavior between microplastic and antibiotic and their effect on phosphorus-removing Shewanella strain during wastewater treatment. Sci Total Environ 2022; 845:157260. [PMID: 35820524 DOI: 10.1016/j.scitotenv.2022.157260] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 06/26/2022] [Accepted: 07/06/2022] [Indexed: 06/15/2023]
Abstract
Owing to their widespread application and use, microplastics (MPs) and antibiotics coexist in the sewage treatment systems. In this study, the effects and mechanisms of the combined stress of MPs and ciprofloxacin (CIP) on phosphorus removal by phosphorus-accumulating organisms (PAOs) were investigated. This study found that the four types of MPs and CIP exhibited different antagonistic effects on the inhibition of phosphorus removal by PAO. MPs reduced the effective concentration of CIP through adsorption and thus reduced its toxicity, which was affected by the biofilms on MPs. In addition, CIP may cause PAO to produce more extracellular polymeric substances, which reduces the physical and oxidative stress of MPs on PAO. Our results are helpful as they increase the understanding of the effects of complex emerging pollutants in sewage systems and propose measures to strengthen the biological phosphorus removal in sewage treatment processes.
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Affiliation(s)
- Yongkui Yang
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China.
| | - Jinyi Liu
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Tongyu Xue
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Seiya Hanamoto
- Environment Preservation Center, Kanazawa University, Kanazawa, Ishikawa 920-1192, Japan
| | - Hongyang Wang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Peizhe Sun
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Lin Zhao
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
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18
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Manzi HP, Zhang P, Zhang L, Xing X, Yue J, Song Z, Nan L, Yujun S, Khan A, Yoon Y, Salama ES. Effect of dibutyl phthalate on microalgal growth kinetics, nutrients removal, and stress enzyme activities. Mar Environ Res 2022; 181:105741. [PMID: 36122470 DOI: 10.1016/j.marenvres.2022.105741] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 09/03/2022] [Accepted: 09/04/2022] [Indexed: 06/15/2023]
Abstract
The dibutyl phthalate (DPB) is an emerging plasticizer contaminant that disrupts the biological processes of primary producers, especially phytoplankton. In this study, two microalgal species (Chlorella sp. GEEL-08 and Tetradesmus dimorphus GEEL-04) were exposed to various concentrations of DBP extending from 0 to 100 mg/L. The growth kinetics, N-nitrate, and P-phosphate removal efficiency were assessed. The response enzymes such as malonaldehyde (MDA) and superoxide dismutase (SOD) were also investigated. The results revealed that the Chlorella sp. GEEL-08 at 10 mg/L concentration of DBP exhibited higher growth (0.88 OD680nm) compared to T. dimorphus GEEL-04 (0.80 OD680nm). More than 94% of N and P were removed from culture media by both microalgal species. The DBP (>50 mg/L) significantly exacerbates the growth of both microalgae species and the growth inhibition ratio was in the range of 3.6%-25.9%. The SOD activity and MDA were higher in T. dimorphus culture media than in the culture media of Chlorella sp. The results reflect the hazard and the risk of plasticizers on primary producers in the ecosystem.
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Affiliation(s)
- Habasi Patrick Manzi
- Department of Occupational and Environmental Health, School of Public Health, Lanzhou University, Lanzhou City, 730000, Gansu Province, PR China
| | - Peng Zhang
- Key Laboratory for Resources Utilization Technology of Unconventional Water of Gansu Province, Gansu Academy of Membrane Science and Technology, Lanzhou City, Gansu Province, 730020, PR China
| | - Lihong Zhang
- Key Laboratory for Resources Utilization Technology of Unconventional Water of Gansu Province, Gansu Academy of Membrane Science and Technology, Lanzhou City, Gansu Province, 730020, PR China
| | - Xiaohong Xing
- Key Laboratory for Resources Utilization Technology of Unconventional Water of Gansu Province, Gansu Academy of Membrane Science and Technology, Lanzhou City, Gansu Province, 730020, PR China
| | - Jianwei Yue
- Key Laboratory for Resources Utilization Technology of Unconventional Water of Gansu Province, Gansu Academy of Membrane Science and Technology, Lanzhou City, Gansu Province, 730020, PR China
| | - Zhongzhong Song
- Key Laboratory for Resources Utilization Technology of Unconventional Water of Gansu Province, Gansu Academy of Membrane Science and Technology, Lanzhou City, Gansu Province, 730020, PR China
| | - Lan Nan
- Key Laboratory for Resources Utilization Technology of Unconventional Water of Gansu Province, Gansu Academy of Membrane Science and Technology, Lanzhou City, Gansu Province, 730020, PR China
| | - Su Yujun
- Key Laboratory for Resources Utilization Technology of Unconventional Water of Gansu Province, Gansu Academy of Membrane Science and Technology, Lanzhou City, Gansu Province, 730020, PR China
| | - Aman Khan
- MOE, Key Laboratory of Cell Activities and Stress Adaptations, Lanzhou University, Lanzhou City, Gansu Province, 730000, PR China
| | - Yeojoon Yoon
- Department of Environmental and Energy Engineering, Yonsei University, Wonju, 26493, Republic of Korea
| | - El-Sayed Salama
- Department of Occupational and Environmental Health, School of Public Health, Lanzhou University, Lanzhou City, 730000, Gansu Province, PR China; Key Laboratory for Resources Utilization Technology of Unconventional Water of Gansu Province, Gansu Academy of Membrane Science and Technology, Lanzhou City, Gansu Province, 730020, PR China.
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19
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Rezania S, Kadi A, Kamyab H, Ghfar AA, Rashidi Nodeh H, Wan Ibrahim WN. Lanthanum doped magnetic polyaniline for removal of phosphate ions from water. Chemosphere 2022; 307:135809. [PMID: 35934100 DOI: 10.1016/j.chemosphere.2022.135809] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 07/04/2022] [Accepted: 07/19/2022] [Indexed: 06/15/2023]
Abstract
Herein, magnetic polyaniline was modified with lanthanum nanoparticles (MPANI@La) as adsorbent, aiming to the treatment of high phosphate-containing aquatic solutions. High valent lanthanum doped with polyaniline was a promising adsorbent to uptake phosphate ions with possible electrostatic interaction and cation exchange process. The functional groups, composition, surface morphology, and magnetic property of the adsorbent were investigated using Fourier Transform-Infrared Spectroscopy (FTIR), Energy Dispersive X-ray (EDX), Scanning Electron Microscopic (SEM), and Vibrating Sample Magnetometer (VSM), respectively. During the experimental process, MPANI@La has removed phosphate ions from water >90%, with 80 mg adsorbent, and shaking for 150 min at room temperature. In this regard, the process was fitted with the Pseudo-second-order kinetic model (R2 > 0.999) and the Langmuir isotherm (R2 > 0.99). The proposed nanoparticles provided an appropriate adsorption capacity (qm) of 45.24 mg.g-1 at pH 4 for phosphate ions. Besides, the adsorbent can be used with an efficiency of 92.49% up to three times that reduced to 52.89% after ten times. In addition, the adsorption process was justified by thermodynamics which confirmed the proposed adsorption mechanism. Hence, the models were provided surface adsorption, monolayer pattern, and the physical mechanism of the phosphate removal process using MPANI@La. Hence the proposed adsorbent can be used as an alternative adsorbent in environmental water remediation.
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Affiliation(s)
- Shahabaldin Rezania
- Department of Environment and Energy, Sejong University, Seoul, 05006, South Korea.
| | - Ammar Kadi
- Department of food and biotechnology, South Ural State University, Chelyabinsk, Russia.
| | - Hesam Kamyab
- Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, 54100, Kuala Lumpur, Malaysia; Department of Biomaterials, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Chennai 600 077, India.
| | - Ayman A Ghfar
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia.
| | - Hamid Rashidi Nodeh
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM, Johor Bahru, Johor, Malaysia.
| | - Wan Nazihah Wan Ibrahim
- Faculty of Applied Sciences, Universiti Teknologi MARA, 40450, Shah Alam, Selangor, Malaysia
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20
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Wu W, Zhao Z, Li M, Zheng W, You S, Wei Q, Liu Y. Electrified nanohybrid filter for enhanced phosphorus removal from water. Chemosphere 2022; 303:135226. [PMID: 35688105 DOI: 10.1016/j.chemosphere.2022.135226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 05/28/2022] [Accepted: 06/02/2022] [Indexed: 06/15/2023]
Abstract
Phosphorus (P) has been identified as a major cause of eutrophication. One feasible way to deal with P-containing wastewater is to employ advanced adsorbents with high P affinity. Towards this end, the loading of these sorbents onto a conductive scaffold would facilitate the introduction of an electric field into the reaction system thereby permitting a continuous-flow operation and improved P sorption kinetics. Here, the preparation and evaluation of an electroactive carbon nanotube (CNT) filter functionalized with cerium-based metal organic frameworks (Ce-MOF) is reported. Various advanced characterization techniques confirmed the successful fabrication of the Ce-MOF/CNT nanohybrid filter. The results suggested that the nanohybrid filter had a maximum P adsorption capacity of 22.41 mg g-1, which compared favorably with other state-of-the-art P sorbents. Ce-MOF loading, applied voltage and flow rate each increased the rate constants for phosphate removal by factors of 1.6, 2.1 and 5.8 times relative to the absent states. The underlying P sorption mechanisms involved outer-sphere surface complexation (electrostatic attraction), inner-sphere surface complexation (Ce-O-P) and diffusion. The performance was tolerant of a wide operational pH range and different water matrices. The Ce-MOF/CNT electrochemical filter described in this study provides a viable strategy to address the challenging issues associated with aqueous P pollution.
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Affiliation(s)
- Wanxiang Wu
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
| | - Zhiyuan Zhao
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Mohua Li
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
| | - Wentian Zheng
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
| | - Shijie You
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Qunshan Wei
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China.
| | - Yanbiao Liu
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China; Shanghai Institute of Pollution Control and Ecological Security, 1239 Siping Road, Shanghai 200092, China.
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21
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Van Truong T, Kim DJ. Synthesis of high quality boehmite and γ-alumina for phosphorus removal from water works sludge by extraction and hydrothermal treatment. Environ Res 2022; 212:113448. [PMID: 35580664 DOI: 10.1016/j.envres.2022.113448] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 04/14/2022] [Accepted: 05/05/2022] [Indexed: 06/15/2023]
Abstract
Alum sludge from water treatment was calcined and extracted to synthesize high quality boehmite and γ-alumina for phosphate removal. Synthesized boehmite and γ-alumina were able to remove phosphate quickly and effectively. Boehmite (hydrothermal treatment at 60 °C) showed maximum phosphate removal (adsorption) of 61 mg P/g followed by γ-alumina (50 mg P/g) and the boehmite hydrothermally treated at 120 °C (41 mg P/g). The degree of crystallinity gave more effect on phosphate adsorption of boehmite than that of γ-alumina. The lower the pH, the more phosphate adsorbed on the boehmite and γ-alumina (adsorb phosphate more than 4 times at pH 3 than at pH 11). Spectroscopic analysis (SEM-EDS and FTIR) indicates that phosphate are removed by ligand exchange, electrostatic attraction, and surface precipitation on the synthesized boehmite and γ-alumina.
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Affiliation(s)
- Tuan Van Truong
- Department of Environmental Sciences and Biotechnology & Institute of Energy and Environment, Hallym University, 1 Okcheon, Chuncheon, 24251, South Korea
| | - Dong-Jin Kim
- Department of Environmental Sciences and Biotechnology & Institute of Energy and Environment, Hallym University, 1 Okcheon, Chuncheon, 24251, South Korea.
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22
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Chee TY, Mohd Yusoff AR, Abdullah F, Asyraf Wan Mahmood WM, Fathi Jasni MJ, Nizam Nik Malek NA, Buang NA, Govarthanan M. Fabrication, characterization and application of electrospun polysulfone membrane for phosphate ion removal in real samples. Chemosphere 2022; 303:135228. [PMID: 35671820 DOI: 10.1016/j.chemosphere.2022.135228] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2021] [Revised: 05/25/2022] [Accepted: 06/02/2022] [Indexed: 06/15/2023]
Abstract
Due to simplicity and flexibility, electrospinning technique can produce many types of fibers at nanoscale via different operational parameters for various applications including industrial wastewater treatment, air filtration and so on. Nonetheless, the study on the electrospinning operational parameter is very limited and many researchers are still using trial-and-error method to design their targeted fiber. In this study, a series of electrospun polysulfone (PSF; 20% w/v) nanofibrous membranes that made up from different ratios of dimethylformamide (DMF) and tetrahydrofuran (THF) mixtures in order to achieve different dielectric constant (ϵ) of solvent system. The fabricated PSF nanofibers were characterized by field emission scanning electron microscopy (FESEM), tensile strength tester and contact angle measurement. The THF-DMF binary solvent system with ϵ = 16.33 to 27.97 produced a smooth surface electrospun PSF nanofibers, while THF mono solvent system (ϵ = 7.60) and DMF mono solvent system (ϵ = 36.70) produced a rough and porous surface electrospun PSF nanofibers. This finding is contradicted with the common finding in which only a binary solvent is able to fabricate a rough or grooved surface electrospun nanofibers. In addition, the dielectric constant can be another key factor, besides boiling point and solubility of binary solvent system, that induces phase separation in the polymeric solution jet and eventually fabricate non-smooth surface electrospun nanofibers. The fabricated electrospun PSF nanofibrous membranes showed high efficiency in phosphate removal.
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Affiliation(s)
- Tan Yong Chee
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310, Johor Bahru, Johor, Malaysia
| | - Abdull Rahim Mohd Yusoff
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310, Johor Bahru, Johor, Malaysia
| | - Faizuan Abdullah
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310, Johor Bahru, Johor, Malaysia.
| | - Wan Mohd Asyraf Wan Mahmood
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310, Johor Bahru, Johor, Malaysia
| | - M Jasmin Fathi Jasni
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310, Johor Bahru, Johor, Malaysia
| | - Nik Ahmad Nizam Nik Malek
- Department of Biosciences, Faculty of Science, Universiti Teknologi Malaysia, 81310, Johor Bahru, Johor, Malaysia
| | - Nor Aziah Buang
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310, Johor Bahru, Johor, Malaysia
| | - Muthusamy Govarthanan
- Department of Biomaterials, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha University, Chennai, 600 077, India
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23
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Liu B, Gai S, Lan Y, Cheng K, Yang F. Metal-based adsorbents for water eutrophication remediation: A review of performances and mechanisms. Environ Res 2022; 212:113353. [PMID: 35483409 DOI: 10.1016/j.envres.2022.113353] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 04/18/2022] [Accepted: 04/19/2022] [Indexed: 06/14/2023]
Abstract
Controlling eutrophication requires satisfying stringent phosphorus concentration standards. Metal-based adsorbents can effectively remove excess phosphorus from water bodies and achieve ultra-low phosphorus concentration control for wastewater. This review focuses on the material properties and phosphorus removal mechanism of metal-based adsorbents (Fe, Al, Ca, Mg, La). There are significant differences in physical and chemical properties of different metal materials, due to the different preparation methods and synthetic materials. The main factors affecting phosphorus removal performance include particle size, crystal structure and pHPZC. Smaller particle size, more disordered crystal structure and higher pHPZC are more favorable for phosphorus removal. The main mechanism of phosphorus removal by metal-based adsorbents is ligand exchange, which makes it exhibit excellent adsorption capacity, fast kinetics and well selectivity for phosphate. In addition, in order to improve the phosphorus removal performance, the surface properties of the adsorbent (e.g., surface charge, surface area, and functional groups) can be effectively improved by dispersion of biochar carriers or combination of multiple metal materials. In further studies, we should improve the absorption capacity of the adsorbent under high pH conditions and the resistance to coexisting ion interference. Finally, in order to ensure the effective application of metal-based adsorbents in the phosphorus removal field, experimental scale should be expanded in future work to suit the actual water body conditions.
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Affiliation(s)
- Bing Liu
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin, 150030, China; Joint Laboratory of Northeast Agricultural University and Max Planck Institute of Colloids and Interfaces (NEAU-MPICI), Harbin, 150030, China
| | - Shuang Gai
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin, 150030, China; Joint Laboratory of Northeast Agricultural University and Max Planck Institute of Colloids and Interfaces (NEAU-MPICI), Harbin, 150030, China
| | - Yibo Lan
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin, 150030, China; Joint Laboratory of Northeast Agricultural University and Max Planck Institute of Colloids and Interfaces (NEAU-MPICI), Harbin, 150030, China
| | - Kui Cheng
- College of Engineering, Northeast Agricultural University, Harbin, 150030, China; Joint Laboratory of Northeast Agricultural University and Max Planck Institute of Colloids and Interfaces (NEAU-MPICI), Harbin, 150030, China.
| | - Fan Yang
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin, 150030, China; Joint Laboratory of Northeast Agricultural University and Max Planck Institute of Colloids and Interfaces (NEAU-MPICI), Harbin, 150030, China.
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24
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Konadu-Amoah B, Hu R, Ndé-Tchoupé AI, Gwenzi W, Noubactep C. Metallic iron (Fe 0)-based materials for aqueous phosphate removal: A critical review. J Environ Manage 2022; 315:115157. [PMID: 35526394 DOI: 10.1016/j.jenvman.2022.115157] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 04/06/2022] [Accepted: 04/22/2022] [Indexed: 06/14/2023]
Abstract
The discharge of excessive phosphate from wastewater sources into the aquatic environment has been identified as a major environmental threat responsible for eutrophication. It has become essential to develop efficient but affordable techniques to remove excess phosphate from wastewater before discharging into freshwater bodies. The use of metallic iron (Fe0) as a reactive agent for aqueous phosphate removal has received a wide attention. Fe0 in-situ generates positively charged iron corrosion products (FeCPs) at pH > 4.5, with high binding affinity for anionic phosphate. This study critically reviews the literature that focuses on the utilization of Fe0-based materials for aqueous phosphate removal. The fundamental science of aqueous iron corrosion and historical background of the application of Fe0 for phosphate removal are elucidated. The main mechanisms for phosphate removal are identified and extensively discussed based on the chemistry of the Fe0/H2O system. This critical evaluation confirms that the removal process is highly influenced by several operational factors including contact time, Fe0 type, influent geochemistry, initial phosphate concentration, mixing conditions, and pH value. The difficulty in comparing independent results owing to diverse experimental conditions is highlighted. Moreover, contemporary research in progress including Fe0/oxidant systems, nano-Fe0 application, Fe0 material selection, desorption studies, and proper design of Fe0-based systems for improved phosphate removal have been discussed. Finally, potential strategies to close the loop in Fe0-based phosphate remediation systems are discussed. This review presents a science-based guide to optimize the efficient design of Fe0-based systems for phosphate removal.
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Affiliation(s)
- Bernard Konadu-Amoah
- School of Earth Science and Engineering, Hohai University, Fo Cheng Xi Road 8, Nanjing, 211100, China.
| | - Rui Hu
- School of Earth Science and Engineering, Hohai University, Fo Cheng Xi Road 8, Nanjing, 211100, China.
| | - Arnaud Igor Ndé-Tchoupé
- School of Earth Science and Engineering, Hohai University, Fo Cheng Xi Road 8, Nanjing, 211100, China.
| | - Willis Gwenzi
- Biosystems and Environmental Engineering Research Group, Department of Agricultural and Biosystems Engineering, University of Zimbabwe, P.O. Box MP167, Mount Pleasant, Harare, Zimbabwe.
| | - Chicgoua Noubactep
- School of Earth Science and Engineering, Hohai University, Fo Cheng Xi Road 8, Nanjing, 211100, China; Centre for Modern Indian Studies (CeMIS), University of Göttingen, Waldweg 26, 37073, Göttingen, Germany; Department of Water and Environmental Science and Engineering, Nelson Mandela African Institution of Science and Technology, Arusha P.O. Box 447, Tanzania; Faculty of Science and Technology, Campus of Banekane, Université des Montagnes, P.O. Box 208, Bangangté, Cameroon.
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25
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Liang H, Guo P, Yang Y, Wang W, Sun Z. Environmental application of engineering magnesite slag for phosphate adsorption from wastewater. Environ Sci Pollut Res Int 2022; 29:59502-59512. [PMID: 35381926 DOI: 10.1007/s11356-022-20029-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Accepted: 03/28/2022] [Indexed: 06/14/2023]
Abstract
Herein, magnesite slags (MS), which remain after sulfuric acid extraction from light burnt magnesite in the magnesite industry, were used as phosphate adsorbents in wastewater. The MS were calcined under 700 °C to enhance phosphate adsorption. The calcined magnesite slags (CMS) were characterized by nitrogen adsorption-desorption isotherm, X-ray diffraction, and scanning electron microscopy. A series of batch adsorption experiments were carried out to test the phosphate adsorption capacity of CMS. The results showed that the calcific treatment promoted the conversion from Mg, Ca, Fe, etc. compound to metal oxide of the MS. The generated metal oxide particles resulted in 237.4 mg/g increase in the phosphate adsorption capacity. The phosphate adsorption isotherm of CMS fitted the Langmuir model better, and the maximum adsorption capacity of CMS was 526 mg/g. The adsorption kinetics of phosphate on CMS can be described by the pseudo-second-order model. The phosphate removal efficiency was greater than 98% in 300 mg/L phosphate solution. Mechanism investigation results indicated that phosphate was adsorbed by CMS through MgO protonation, electrostatic attraction, Mg-P complexation, and ligand exchange. The results obtained in this work demonstrate that the CMS is a potential effective adsorbent for removal and reutilization phosphate from P-contaminated water, due to it can be employed as a fertilizer after phosphate adsorption.
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Affiliation(s)
- Hai Liang
- Liaoning Key Laboratory of Chemical Additive Synthesis and Separation, Yingkou Institute of Technology, 46 Bowen Road, Yingkou, 115014, China.
- College of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China.
| | - Panliang Guo
- Liaoning Key Laboratory of Chemical Additive Synthesis and Separation, Yingkou Institute of Technology, 46 Bowen Road, Yingkou, 115014, China
| | - Yunhong Yang
- Yingkou Magnesite Chemical Ind Group Co., Ltd., Yingkou, 115100, China
| | - Wanting Wang
- Liaoning Key Laboratory of Chemical Additive Synthesis and Separation, Yingkou Institute of Technology, 46 Bowen Road, Yingkou, 115014, China
| | - Zhaonan Sun
- Liaoning Key Laboratory of Chemical Additive Synthesis and Separation, Yingkou Institute of Technology, 46 Bowen Road, Yingkou, 115014, China
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26
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Tian Q, Zuo Z, Qiu F, Li Z, Yang D, Zhang T. Toxic waste sludge derived hierarchical porous adsorbent for efficient phosphate removal. Sci Total Environ 2022; 830:154765. [PMID: 35337883 DOI: 10.1016/j.scitotenv.2022.154765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 03/13/2022] [Accepted: 03/18/2022] [Indexed: 06/14/2023]
Abstract
Global effective treatment of phosphorus crisis and toxic waste sludge in one way is urgently needed but still insufficient due to single function, environmental damage, and complicated fabrication process. Herein, we proposed a facile, low-cost, and sustainable strategy to fabricate NiAl layered double oxides/nickel-containing sludge (LDOs/NCS) adsorbent using toxic NCS as raw material via two-step method including hydrothermal process and calcination. The as-designed hierarchical porous adsorbent with large specific surface area and pore volume exhibited excellent adsorption properties towards phosphate. Langmuir adsorption model exhibited the best fit to the experimental data, which illustrated that the adsorption process was dominated by monolayer adsorption. Moreover, even in various double anions systems or in a wide pH range environment (2-12), the as-designed LDOs/NCS still maintained relatively stable adsorption capacity. A possible adsorption mechanism involving surface complexation and electrostatic interactions was investigated. Besides, the LDOs/NCS also displayed admirable durability and reusability. Therefore, this waste-control-waste strategy not only simultaneously addresses phosphorus crisis treatment and toxic NCS management, but also could be potentially extended towards rational design of other metals-containing sludge derived functional materials.
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Affiliation(s)
- Qiong Tian
- School of Chemistry and Chemical Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, China
| | - Zhengtao Zuo
- School of Chemistry and Chemical Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, China
| | - Fengxian Qiu
- School of Chemistry and Chemical Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, China.
| | - Zhangdi Li
- School of Chemistry and Chemical Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, China
| | - Dongya Yang
- School of Chemistry and Chemical Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, China
| | - Tao Zhang
- School of Chemistry and Chemical Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, China; Key Laboratory of New Processing Technology for Nonferrous Metal & Materials, Ministry of Education/ Guangxi Key Laboratory of Optical and Electronic Materials and Devices, Guilin University of Technology, Guilin, 541004, China.
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27
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Zhao Y, Niu Z, Zhong Q, Wang L, He S, Xu M, Wang J. Preparation and Characterization of Red Mud/Fly Ash Composite Material (RFCM) for Phosphate Removal. Bull Environ Contam Toxicol 2022; 109:169-179. [PMID: 35732838 DOI: 10.1007/s00128-022-03565-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Accepted: 05/09/2022] [Indexed: 06/15/2023]
Abstract
In this study, a new red mud/fly ash composite material (RFCM) for phosphate removal was prepared by granulation and activation methods, using bauxite residue (red mud, RM) as the main raw material, adding with some fly ash and a few adhesives. The effects of different types of RM and adhesives on RFCM for phosphate removal were discussed. It was found that RFCM prepared from sintering red mud and cement waste performed better on phosphate removal than that prepared from Bayer red mud and common industrial adhesives. After calcination activated at appropriate temperature around 800-900℃, the specific surface area of RFCM increased, and new substances with hydroxyl (-OH) appeared on the surface of RFCM, which were the functional groups for phosphate removal. Mechanism of RFCM for phosphate removal was speculated as a combination of physical adsorption, chemical adsorption and chemical precipitation, which mainly depended on ligand exchange and chemical reaction. This research will provide a potential application of bauxite residue in environmental remediation.
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Affiliation(s)
- Yaqin Zhao
- Research Center of Mine Ecological Restoration Engineering, School of Environment and Spatial Informatics, China University of Mining and Technology, No.1 Daxue Road, Xuzhou, 221116, Jiangsu, People's Republic of China.
| | - Zixuan Niu
- Research Center of Mine Ecological Restoration Engineering, School of Environment and Spatial Informatics, China University of Mining and Technology, No.1 Daxue Road, Xuzhou, 221116, Jiangsu, People's Republic of China
- Environmental Health Management Guidance Center, Taicang Urban Administration Bureau, No.118 Tianjin Road, Taicang, Suzhou, 215413, Jiangsu, People's Republic of China
| | - Qianqian Zhong
- School of New Materials and Chemical Engineering, Tangshan University, No.11 Daxue West Avenue, Tangshan, 063000, Hebei, People's Republic of China
| | - Liping Wang
- Research Center of Mine Ecological Restoration Engineering, School of Environment and Spatial Informatics, China University of Mining and Technology, No.1 Daxue Road, Xuzhou, 221116, Jiangsu, People's Republic of China
| | - Shilong He
- Research Center of Mine Ecological Restoration Engineering, School of Environment and Spatial Informatics, China University of Mining and Technology, No.1 Daxue Road, Xuzhou, 221116, Jiangsu, People's Republic of China
| | - Mingyang Xu
- Research Center of Mine Ecological Restoration Engineering, School of Environment and Spatial Informatics, China University of Mining and Technology, No.1 Daxue Road, Xuzhou, 221116, Jiangsu, People's Republic of China
- Nantong Capchem Chemicals, Co. Ltd., No. 986 JiangShan Road, Nantong Economic Development Zone, Nantong, 226010, Jiangsu, People's Republic of China
| | - Jing Wang
- Research Center of Mine Ecological Restoration Engineering, School of Environment and Spatial Informatics, China University of Mining and Technology, No.1 Daxue Road, Xuzhou, 221116, Jiangsu, People's Republic of China
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28
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Sutherland DL, Bramucci A. Dissolved organic phosphorus bioremediation from food-waste centrate using microalgae. J Environ Manage 2022; 313:115018. [PMID: 35405545 DOI: 10.1016/j.jenvman.2022.115018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Revised: 03/27/2022] [Accepted: 04/02/2022] [Indexed: 06/14/2023]
Abstract
Dissolved organic phosphorus (DOP) accounts for a substantial proportion of the total phosphorus remaining in the wastewater discharge and remains a concern for the receiving environment. This study assessed the potential of wastewater microalgae for the bioremediation of DOP from anaerobically digested food-waste centrate. For high DOP to low DIP ratio, the microalgal consortia was able to remove over 98% of DOP and 95% of total dissolved phosphorus. However, under a 1:1 ratio of DOP to DIP, the microalgal consortia was only able to remove 5% of the organic phosphorus and 76% of total dissolved phosphorus. All five main microalgal species were capable of producing alkaline phosphatase to some degree, the enzyme responsible for hydrolysing the phosphorus. For the dominant species Desmodesmus communis, total phosphatase activity reduced from 46.0 ± 2.3 mmol L-1 h-1 in axenic cultures to only 6.3 ± 0.7 mmol L-1 h-1 in presence of its microbiome. This resulted in a reduction in biomass from 209 ± 13 g m-3 to 73 ± 5 g m-3. For Tetradesmus dimorphus, alkaline phosphatase increased from 6.5 ± 0.3 mmol L-1 h-1 in the axenic culture to 169.8 ± 40.1 mmol L-1 h-1 in presence of both its microbiome and centrate-sourced bacteria but had little impact on biomass production. DOP removal rates across all five species, in all treatments ranged from 17 to 91%. With the exception of D. communis, the nutrient removal efficiency of DOP per unit biomass suggested luxury uptake of phosphorus into the microalgal cell. For wastewaters with low inorganic and moderate to high organic phosphorus microalgal-based wastewater treatment systems may offer a cost-effective mechanism for the removal and recovery of dissolved organic phosphorus from wastewater. Further research on refining organic phosphorus bioremediation in a range of wastewater types, particularly at pilot and full-scale, is needed.
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Affiliation(s)
- Donna L Sutherland
- Faculty of Science, University of Technology Sydney, Ultimo NSW, 2007, Australia.
| | - Anna Bramucci
- Faculty of Science, University of Technology Sydney, Ultimo NSW, 2007, Australia
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29
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Zhang M, He M, Chen Q, Huang Y, Zhang C, Yue C, Yang L, Mu J. Feasible synthesis of a novel and low-cost seawater-modified biochar and its potential application in phosphate removal/recovery from wastewater. Sci Total Environ 2022; 824:153833. [PMID: 35151752 DOI: 10.1016/j.scitotenv.2022.153833] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 01/19/2022] [Accepted: 02/08/2022] [Indexed: 06/14/2023]
Abstract
In this study, a novel and low-cost seawater-modified biochar (SBC) was fabricated via the pyrolysis of fir wood waste followed by co-precipitation modification using seawater as the Ca/Mg source. The co-precipitation pH was a vital factor during modification, and the optimal pH was 10.50 according to calculations using PHREEQC 2.5 and experiments. The characterizations indicated that Ca and Mg were loaded on the SBC as irregular CaCO3 and nanoflake-like Mg(OH)2, respectively, with the latter dominating. The SBC exhibited a high maximum adsorption capacity of 181.07 mg/g for phosphate, calculated using the Langmuir model, excellent adsorption performance under acidic and neutral conditions (pH = 3.00-7.00), and remarkable selectivity against Cl-, NO3-, and SO42-. The presence of HCO3- promoted adsorption. The mechanisms behind phosphate adsorption involved electrostatic attraction, ligand exchange, precipitation, and inner-sphere complexation. Mg, rather than Ca, was served as the main adsorptive sites for phosphate. Additionally, the feasibility of treating real-world wastewater was tested in batch (using SBC powders) and fixed-bed column (using SBC granules) experiments. The results indicate that the SBC powders could reduce the phosphate concentration from 1.26 mg P/L to below 0.5 mg P/L at a low dose of 0.50 g/L, and the SBC granules exhibited a high removal efficiency with excellent recyclability; the capacity still remained at 78.92% of the initial capacity after five adsorption-desorption runs. Furthermore, the modification process almost did not increase the production cost of the SBC, which was estimated to be 0.41 $/kg. Our results demonstrate that seawater is a low-cost and efficient modifier for biochar modification, and the resultant SBC demonstrates great potential for treating actual phosphate-containing wastewater.
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Affiliation(s)
- Mingdong Zhang
- Institute of Oceanography, College of Geography and Oceanography, Minjiang University, Fuzhou 350108, PR China; Fuzhou Institute of Oceanography, Fuzhou 350108, PR China
| | - Minzhen He
- Institute of Oceanography, College of Geography and Oceanography, Minjiang University, Fuzhou 350108, PR China; College of Environment & Safety Engineering, Fuzhou University, Fuzhou 350028, PR China
| | - Qinpeng Chen
- Institute of Oceanography, College of Geography and Oceanography, Minjiang University, Fuzhou 350108, PR China; College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, PR China
| | - Yaling Huang
- Institute of Oceanography, College of Geography and Oceanography, Minjiang University, Fuzhou 350108, PR China; Fuzhou Institute of Oceanography, Fuzhou 350108, PR China
| | - Chaoyue Zhang
- Institute of Oceanography, College of Geography and Oceanography, Minjiang University, Fuzhou 350108, PR China; College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, PR China
| | - Chen Yue
- Institute of Oceanography, College of Geography and Oceanography, Minjiang University, Fuzhou 350108, PR China; College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, PR China
| | - Liyang Yang
- College of Environment & Safety Engineering, Fuzhou University, Fuzhou 350028, PR China
| | - Jingli Mu
- Institute of Oceanography, College of Geography and Oceanography, Minjiang University, Fuzhou 350108, PR China; Fuzhou Institute of Oceanography, Fuzhou 350108, PR China.
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30
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Li Y, Jing X, Li Q, Shen Y, Fang Q. Well-defined bimetal oxides derived from Prussian blue analogues with regulable active sites for phosphate removal. J Colloid Interface Sci 2022; 622:390-401. [PMID: 35525142 DOI: 10.1016/j.jcis.2022.04.093] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 04/11/2022] [Accepted: 04/17/2022] [Indexed: 01/31/2023]
Abstract
Two well-defined CoFe bimetal oxides are prepared from Prussian blue analogues (PBAs) as precursors with designable structures, which are further explored for phosphate removal. A speed-controlled coordination strategy is used to fabricate two CoFe PBA microcrystals with different morphologies, then two regular CoFe oxides are obtained via an intermediate-temperature calcination. CoFeS, a slow-speed coordination product with truncated microcube structure, contains less coordinated water and Fe3+ in its framework, but can create more mesopores and Fe3+ in its oxidative product of CoFeST300. CoFeST300 has been demonstrated to have higher adsorption capacity and affinity for phosphate adsorption compared to that of the fast-speed coordination product, due to its more Fe3+ as effective adsorption sites via ligand exchange. Besides, the inner-sphere complexation mechanism makes CoFeST300 high selectivity for phosphate removal compared to other co-existing anions. The application performance of CoFeST300 is examined by multiple continuous treatment of actual sewage, and the result of all effluent concentrations below 0.5 mg P/L verifies a promising potential of the fabricated adsorbent for phosphorus removal. Thus, design or regulation of the precursors is an efficiency method to fabricate an ideal metal oxide for phosphate adsorption.
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Affiliation(s)
- Yungui Li
- Sichuan Provincial Sci-Tech Cooperation Base of Low-cost Wastewater Treatment Technology, Department of Environmental Engineering, Southwest University of Science and Technology, Mianyang 621010, PR China; NHC Key Laboratory of Nuclear Technology Medical Transformation, Mianyang Central Hospital, Mianyang 621010, PR China
| | - Xiaoxu Jing
- Sichuan Provincial Sci-Tech Cooperation Base of Low-cost Wastewater Treatment Technology, Department of Environmental Engineering, Southwest University of Science and Technology, Mianyang 621010, PR China; Advanced Institute of Natural Sciences, Beijing Normal University, Zhuhai 519087, PR China
| | - Qingqing Li
- Advanced Institute of Natural Sciences, Beijing Normal University, Zhuhai 519087, PR China
| | - Yi Shen
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Qile Fang
- Advanced Institute of Natural Sciences, Beijing Normal University, Zhuhai 519087, PR China.
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31
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Ni M, Chen Y, Pan Y, Huang Y, Li DP, Li L, Huang B, Song Z. Study on community structure and metabolic mechanism of dominant polyphosphate-accumulating organisms (PAOs) and glycogen-accumulating organisms (GAOs) in suspended biofilm based on phosphate recovery. Sci Total Environ 2022; 815:152678. [PMID: 34973331 DOI: 10.1016/j.scitotenv.2021.152678] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 12/20/2021] [Accepted: 12/21/2021] [Indexed: 05/16/2023]
Abstract
Biofilm sequencing batch reactor (BSBR) can achieve efficient phosphate (P) removal and enrichment, but its process performance and metabolic mechanisms for P removal and enrichment of municipal wastewater remain largely unclear. In the present study, we assessed the P removal and enrichment of municipal wastewater at influent P concentrations of 2.5 mg/L and 10 mg/L. The efficiency of P removal and enzyme activity in polyphosphate-accumulating organisms (PAOs) and glycogen-accumulating organisms (GAOs) were compared, and the growth and metabolic characteristics of dominant PAOs and GAOs at different influent P concentrations were studied with the macro-sequencing technology. The results showed that the P recovery efficiencies were 70.03% and 76.19% when the influent P concentration was 2.5 mg/L and 10 mg/L in BSBR, respectively, and the maximum P concentration of recovery liquid was 81.29 mg/L and 173.12 mg/L, respectively. There were no phosphate kinase (PPK) and phosphate hydrolase (PPX) in extracellular polymeric substances (EPS). The dominant PAOs were Candidatus_Contendobacter, Dechloromonas, and Flavobacterium, and the dominant GAO was Candidatus_Competibacter. The abundance of Candidatus_Contendobacter was the highest with the most potential contribution to P removal. PAOs had competitive advantages in carbon (C) source uptake, glycogen metabolism, P metabolism, and adenosine triphosphate (ATP) metabolism. HMP was unique to PAOs, EMP had the highest abundance in glycogen metabolism, and ED was contained in PAOs of BSBR. These results indicated that BSBR provided sufficient reducing power and ATP for PAOs through different glycogen decomposition pathways to promote P uptake and obtained competitive advantages in P metabolism, C source uptake, and ATP utilization to achieve efficient P removal and enrichment. Collectively, our current findings provided valuable insights into the P removal and enrichment mechanism of BSBR in municipal sewage.
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Affiliation(s)
- Min Ni
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, China; Jiangsu Key Laboratory of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, China
| | - Yue Chen
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, China
| | - Yang Pan
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, China; National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology, Suzhou University of Science and Technology, Suzhou, China.
| | - Yong Huang
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, China; National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology, Suzhou University of Science and Technology, Suzhou, China
| | - Da-Peng Li
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, China; National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology, Suzhou University of Science and Technology, Suzhou, China
| | - Lu Li
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, China
| | - Bo Huang
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, China
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He X, Xie X, Xu H, Liu J, Li B, Zhang Q. Promoted removal of phosphate by layered double hydroxides combined with bacteria: Application of novel carriers in biofilm reactor. Bioresour Technol 2022; 349:126879. [PMID: 35202826 DOI: 10.1016/j.biortech.2022.126879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 02/15/2022] [Accepted: 02/17/2022] [Indexed: 06/14/2023]
Abstract
Layered double hydroxides (LDHs) were used as carriers for the microbial consortium in sequencing biofilm batch reactor (SBBR) without inoculation to promote the removal of phosphate. The adsorption capacity of [Zn-Al]-LDH was significantly better than that of [Mg-Al]-LDH. The pollutants removal performance and behavior of microorganisms in LDH-SBBRs were also investigated. LDH-SBBRs showed improved removal efficiencies of COD, phosphate and TP with a low C/N ratio. Microscopic images show that biofilm formed rapidly in LDH-SBBRs. SEM-EDS detected abundant carbon and phosphorus, implying that biomass and phosphorus accumulate on LDH carriers. The microbial compositions of the three SBBRs indicate that the LDHs carriers improved the biodiversity of biofilm in the bioreactors. Synergistic effects of adsorption and biodegradation between well-structured LDHs and microorganisms led to an improved phosphate removal performance of LDH-SBBR. The results also demonstrate that [Zn-Al]-LDH carrier is the best for improving SBBR phosphate removal.
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Affiliation(s)
- Xiaoman He
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China; Hubei Key Laboratory of Mineral Resources Processing and Environment, Wuhan University of Technology, Wuhan 430070, China
| | - Xin Xie
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China
| | - Huanle Xu
- Hubei Urban Construction Design Institute Co, Ltd., Wuhan 430051, China
| | - Jingxuan Liu
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China; Hubei Key Laboratory of Mineral Resources Processing and Environment, Wuhan University of Technology, Wuhan 430070, China
| | - Bolin Li
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China; Hubei Key Laboratory of Mineral Resources Processing and Environment, Wuhan University of Technology, Wuhan 430070, China.
| | - Qiwu Zhang
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China; Hubei Key Laboratory of Mineral Resources Processing and Environment, Wuhan University of Technology, Wuhan 430070, China
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Zhang K, Qing J, Chen Y, Liu X, Fu X, Jiang B, Luo H, Yang J, Xue R, Anderson BC, Li M, Li X, Chen W, Fan L, Zhang X. Treatment try of simulated agricultural surface runoff pollution by using a novel biomass concentrator reactor. J Environ Manage 2022; 304:114272. [PMID: 34915388 DOI: 10.1016/j.jenvman.2021.114272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 10/02/2021] [Accepted: 12/07/2021] [Indexed: 06/14/2023]
Abstract
Increased agricultural surface runoff in rural watersheds is a leading cause of nonpoint source pollution. In this study, a new biomass concentrator reactor (BCR) is conducted to degrade simulated agricultural surface runoff for both start-up process and treatment process. The results show that both in the start-up phase and in the stable phase, BCR had a good degradation effect on simulated agricultural surface runoff. Within 13 days-15 days of completed start-up of BCR, degradation of COD can be considered to the first-order kinetics: lnCt=lnC0-0.1377t (R2 = 0.78). During the stabilization phase, the average removal rate of COD, NH4+-N, NO3--N, TN and TP from the effluents through the BCR membrane was 94.58%, 85.79%, 53.58%, 37.87%, and 60.62%, respectively, which was increased by 7.4%, 2.5%, 5.1%, 0.18% and 11.4%, respectively, compared to control experiment which the effluents without membrane. The pollutants degradation by BCR in stable phase show a partly relative model of Lawrence-McCarty equation, which the nitrogen and phosphorus degradation is vN=(4.1+S)/(2.53×S) (R2 = 0.69) and vP=(8.78+S)/(3.0×S) (R2 = 0.67), respectively. In the stable phase, the operation cost of BCR is about $0.08/(L•d). Future research on improved BCR maybe focus on the membrane pollution and cleaning, optimized operation conditions, new materials of membrane.
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Affiliation(s)
- Ke Zhang
- College of Civil Engineering, Sichuan Agricultural University, Dujiangyan, Chengdu, 611830, China; Sichuan Higher Education Engineering Research Center for Disaster Prevention and Mitigation of Village Construction, Sichuan Agricultural University, Dujiangyan, Chengdu, 611830, China
| | - Jing Qing
- College of Civil Engineering, Sichuan Agricultural University, Dujiangyan, Chengdu, 611830, China
| | - Yuanye Chen
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, 611130, China
| | - Xiaoling Liu
- Department of Information Engineering, Sichuan Water Conservancy Vocational College, Yangma Town, Chengdu, 611231, China
| | - Xiaoying Fu
- State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, 610065, China
| | - Bing Jiang
- Business and Tourism School, Sichuan Agricultural University, Chengdu, 611830, China
| | - Hongbing Luo
- College of Civil Engineering, Sichuan Agricultural University, Dujiangyan, Chengdu, 611830, China; College of Environmental Sciences, Sichuan Agricultural University, Chengdu, 611130, China; Sichuan Higher Education Engineering Research Center for Disaster Prevention and Mitigation of Village Construction, Sichuan Agricultural University, Dujiangyan, Chengdu, 611830, China.
| | - Jinping Yang
- College of Civil Engineering, Sichuan Agricultural University, Dujiangyan, Chengdu, 611830, China
| | - Ru Xue
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, 611130, China
| | - Bruce C Anderson
- Department of Civil Engineering, Queen's University, Kingston, ON, K7L 3N6, Canada
| | - Mei Li
- School of Urban and Rural Construction, Chengdu University, Chengdu, 610106, China
| | - Xiaoting Li
- Laboratory Center, College of Chemical and Material Science, Sichuan Normal University, Chengdu, 610066, China
| | - Wei Chen
- College of Civil Engineering, Sichuan Agricultural University, Dujiangyan, Chengdu, 611830, China; Sichuan Higher Education Engineering Research Center for Disaster Prevention and Mitigation of Village Construction, Sichuan Agricultural University, Dujiangyan, Chengdu, 611830, China
| | - Liangqian Fan
- College of Civil Engineering, Sichuan Agricultural University, Dujiangyan, Chengdu, 611830, China; Sichuan Higher Education Engineering Research Center for Disaster Prevention and Mitigation of Village Construction, Sichuan Agricultural University, Dujiangyan, Chengdu, 611830, China
| | - Xiaohong Zhang
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, 611130, China
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Nie G, Wu L, Qiu S, Xu Z, Wang H. Preferable phosphate sequestration using polymer-supported Mg/Al layered double hydroxide nanosheets. J Colloid Interface Sci 2022; 614:583-592. [PMID: 35121517 DOI: 10.1016/j.jcis.2022.01.158] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 01/22/2022] [Accepted: 01/24/2022] [Indexed: 12/20/2022]
Abstract
The efficient removal of phosphate from waters is critical to mitigating eutrophication. Recently, layered double hydroxides (LDHs) have been believed to be promising adsorbents for phosphate removal. Nevertheless, the scaled-up application of LDHs is limited by the difficulties of separation, excessive pressure drops, and potential metal leaching. In this study, a millimeter-sized nanocomposite, MgAl-201, was fabricated by impregnating Mg/Al LDH nanosheets into a polystyrene anion exchanger D201. The resulting MgAl-201 combines the inherent affinity of Mg/Al LDH toward phosphate and the excellent hydrodynamic performance of the support material. Benefiting from the shielding effect from the cross-linked polymeric host, MgAl-201 exhibits satisfactory chemical stability in the range of pH 3-11 with a negligible metal release. Adsorption experiments show that MgAl-201 has superb applicability to neutral phosphate-contaminated waters. It reaches adsorption equilibrium within 270 min, and the maximum adsorption capacity calculated by the double Langmuir model is 52.0 mg/g. Meanwhile, MgAl-201 exhibits more preferable adsorption toward phosphate than D201 when coexisting anions are at relatively high levels. FTIR and XPS surveys revealed that two distinct adsorption interactions were involved in phosphate removal, that is, electrostatic interactions from the quaternary ammonium groups bonded on the host and the interlayer exchangeable anions in the encapsulated Mg/Al LDH, and specific inner-sphere complexation from the -OH groups in the Mg/Al LDH layers. For wastewater application, a satisfactory treatable volume of 580 BV was achieved to reduce the effluents from 2.0 mg/L to 0.5 mg/L, which was up to 8 times that of the traditional anion exchanger D201. Furthermore, MgAl-201 could be easily regenerated using the Na2CO3-NaCl binary solution and maintained good reusability without significant capacity loss after 5 adsorption-desorption cycles. The results suggest that MgAl-201 is of great application capability for preferable phosphate sequestration in advanced wastewater treatment.
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Affiliation(s)
- Guangze Nie
- School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, China.
| | - Lirui Wu
- School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Shijun Qiu
- School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Zhengwen Xu
- Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China
| | - Hailing Wang
- School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, China
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35
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Taweekarn T, Wongniramaikul W, Choodum A. Removal and recovery of phosphate using a novel calcium silicate hydrate composite starch cryogel. J Environ Manage 2022; 301:113923. [PMID: 34634722 DOI: 10.1016/j.jenvman.2021.113923] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 09/10/2021] [Accepted: 10/06/2021] [Indexed: 06/13/2023]
Abstract
Phosphate is a major pollutant that deteriorates water quality and causes eutrophication, a novel calcium silicate hydrate composite cryogel (Cry-CSH) was thus successfully prepared for phosphate removal and recovery in this work. Calcium silicate hydrate (C-S-H) was mixed with the gel precursor (7.5% w/w) prepared from native starch and limewater (saturated calcium hydroxide solution as the cross-linker). The mixture was frozen and thawed for 3 cycles giving an interconnected macroporous composite. This had C-S-H nanoparticles (75 mg) immobilized on a monolithic floatable cryogel network (2.5 cm diameter × 1.0 cm height) enabling an easier recovery and without the losses that occur when using C-S-H nanoparticles. The phosphate adsorption reaches equilibrium at 120 min with adsorption capacity of 2.50 mgPO43-/gCry-CSH (65.42 mgPO43-/gC-S-H) under optimum conditions. Adsorption equilibrium data were well fit by the Freundlich isotherm model, while kinetic results were well fit by the pseudo second-order model. The calculated activation energy (Ea) of 43.9 kJ/mol indicates chemical adsorption, while a positive change in enthalpy (ΔH0, 19.3 kJ/mol) indicates the endothermic nature of phosphate adsorption. Cry-CSH can remove phosphate from wastewater and effluent samples with excellent removal efficiency (>98%). It can float on water surface for at least 105 days without damage, while its phosphate adsorbed form can be biodegraded within 10 days under soil buried conditions. Thus, this work demonstrated the significant potential of Cry-CSH for practical and environmentally friendly phosphate removal and recovery.
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Affiliation(s)
- Tarawee Taweekarn
- Integrated Science and Technology Research Center, Faculty of Technology and Environment, Prince of Songkla University, Phuket Campus, Kathu, Phuket, 83120, Thailand
| | - Worawit Wongniramaikul
- Integrated Science and Technology Research Center, Faculty of Technology and Environment, Prince of Songkla University, Phuket Campus, Kathu, Phuket, 83120, Thailand
| | - Aree Choodum
- Integrated Science and Technology Research Center, Faculty of Technology and Environment, Prince of Songkla University, Phuket Campus, Kathu, Phuket, 83120, Thailand.
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36
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Wang B, Zheng S, Huang Z, Hu Y, Zhu K. Fabrication of H 2O 2 slow-releasing composites for simultaneous Microcystis mitigation and phosphate immobilization. Sci Total Environ 2021; 798:149164. [PMID: 34325137 DOI: 10.1016/j.scitotenv.2021.149164] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 07/05/2021] [Accepted: 07/16/2021] [Indexed: 06/13/2023]
Abstract
Hydrogen peroxide (H2O2) is a widely accepted algicide in controlling cyanobacterial blooms. However, this method includes two disadvantages: 1) a low H2O2 concentration (<5 mg L-1) is required; 2) H2O2-induced cell lysis causes phosphorus (P) contamination. To overcome the drawbacks, a H2O2 slow-releasing composite (HSRC) based on calcium peroxide (CaO2) was fabricated to substitute liquid H2O2. According to the results, a higher CaO2 dose increased H2O2 yield and releasing rate. H2O2 yield of 160 mg L-1 CaO2 in HSRC reached 32.9 mg L-1 and its releasing rate was 0.407 h-1. In addition, a higher temperature decreased H2O2 yield and increased H2O2-releasing rate. Besides, HSRC endowed with a remarkable ability to immobilize P. Higher CaO2 dose, pH value, and temperature increased the rate of P immobilization. The highest rate was 0.185 h-1, which occurred with 160 mg L-1 CaO2 in HSRC at 25 °C and pH 8.0. Toxicity assays showed that HSRC exerted sustaining oxidative stress on Microcystis aeruginosa. Accumulation of intracellular reactive oxygen species resulted in the disruption of enzymatic systems and inactivation of photosystem. Tracking the variations of cell growth and H2O2 concentration during HSRC treatments, it suggested that the lethal effect on Microcystis aeruginosa was achieved with a super-low H2O2 concentration (<0.3 mg L-1). In addition, cell lysis did not cause a sudden rise in P concentration due to the P immobilization by HSRC. Therefore, HSRC successfully offsets the drawbacks of liquid H2O2 in mitigating cyanobacterial blooms. It may be a novel and promising algicide that not only kills cyanobacteria but also reduces eutrophication momentarily.
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Affiliation(s)
- Binliang Wang
- School of Life Science, Shaoxing University, Shaoxing 312000, PR China
| | - Shuaibo Zheng
- School of Life Science, Shaoxing University, Shaoxing 312000, PR China
| | - Zongken Huang
- School of Life Science, Shaoxing University, Shaoxing 312000, PR China
| | - Yiwei Hu
- School of Life Science, Shaoxing University, Shaoxing 312000, PR China.
| | - Kongxian Zhu
- Changjiang River Scientific Research Institute, Wuhan 430000, PR China
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37
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Ahmed S, Zhang Y, Wu B, Zheng Z, Leung CF, Choy TY, Kwok YT, Lo IMC. Scaled-up development of magnetically recyclable Fe 3O 4/La(OH) 3 composite for river water phosphate removal: From bench-scale to pilot-scale study. Sci Total Environ 2021; 791:148281. [PMID: 34119786 DOI: 10.1016/j.scitotenv.2021.148281] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 04/19/2021] [Accepted: 06/02/2021] [Indexed: 06/12/2023]
Abstract
The use of magnetic lanthanum-based materials for phosphate removal from river water has gained increasing attention. However, challenges to produce and use lanthanum-based materials in large-scale or pilot-scale studies remain. In this work, a kilogram-scale Fe3O4/La(OH)3 magnetically recyclable composite for removing phosphate from river water was developed through a low-temperature precipitation route. The composite was used to remove phosphate from river water at both bench- and pilot-scales. Based on the bench-scale tests, the developed Fe3O4/La(OH)3 composite was found to have excellent magnetic particle separation efficiency (>98%) and a sorption capacity of 11.77 mg/g for phosphate. A 1.0 g/L dosage of the composite in the river water sample was able to selectively reduce the phosphate level from 0.089 to 0.005 mg/L in 60 min over five consecutive adsorption cycles. At the pilot-scale, the Fe3O4/La(OH)3 composite only achieved 36.0% phosphate removal efficiency, which is considerably different from the bench-scale results over an operational time of five months and a total treatment volume of 300 m3. This significantly reduced removal efficiency is mainly attributable to turbidity, suspended solids, and organic matter in the river water and the deteriorated magnetic separation efficiency. This study revealed potential challenges and shed new insights on moving magnetic nanocomposite-based technology from the bench-scale to the pilot-scale, which can inspire new designs for the application of similar technology.
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Affiliation(s)
- Saeed Ahmed
- Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Yanyang Zhang
- Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Baile Wu
- Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Zexiao Zheng
- Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Chui-Fan Leung
- Water Supplies Department, Hong Kong Special Administrative Region, China
| | - Tak-Yip Choy
- Water Supplies Department, Hong Kong Special Administrative Region, China
| | - Yau-Ting Kwok
- Water Supplies Department, Hong Kong Special Administrative Region, China
| | - Irene M C Lo
- Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Hong Kong, China; Institute for Advanced Study, The Hong Kong University of Science and Technology, Hong Kong, China.
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38
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Jin H, Lin L, Meng X, Wang L, Huang Z, Liu M, Dong L, Hu Y, Crittenden JC. A novel lanthanum-modified copper tailings adsorbent for phosphate removal from water. Chemosphere 2021; 281:130779. [PMID: 34015652 DOI: 10.1016/j.chemosphere.2021.130779] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 04/08/2021] [Accepted: 04/29/2021] [Indexed: 06/12/2023]
Abstract
La(OH)3-modified copper tailings were prepared, characterized, and investigated for phosphate removal from water in this study. Scanning electron microscopy (SEM) analysis showed that La(OH)3 modification made a large amount of spherical solid agglomerates appeared on the surface of the copper tailings and created many pores. Laser particle size analysis indicated that the modified copper tailings had much a smaller particle size and larger specific surface area. Fourier Transform Infrared Spectroscopy (FTIR) and X-ray fluorescence (XRF) analysis illustrated that lanthanun was successfully loaded on the copper tailings with a mass percentage of 25.31%. The adsorption kinetics and isothermal adsorption experiment results indicated that the La(OH)3-modified copper tailings had a much better phosphate adsorption capacity than the original copper tailings. The adsorption kinetics process of the La(OH)3-modified copper tailings followed the pseudo-second-order kinetic model, and the isothermal adsorption data were well fitted by the Langmuir isotherm model. The maximum phosphorus adsorption capacity of the copper tailings after alkali treatment and La(OH)3 modification increased from 737.04 mg/kg to 7078.43 mg/kg, which was close to that of Phoslock. Leaching toxicity testing demonstrated that the use of La(OH)3-modified copper tailings for phosphorus removal in water treatment would not cause secondary pollution. Adsorption mechanism analysis revealed that both electrostatic attraction and ligand exchange were involved in phosphate adsorption onto La(OH)3-modified copper tailings. The phosphate adsorption of La(OH)3-modified copper tailings was pH-dependent, and a high-pH environment resulted in a decline in adsorption capacity. The increased concentration of OH- in high-pH solution was unfavorable for ligand exchange between phosphate species and hydroxyl groups from La(OH)2 species. In addition, competitive adsorption between HPO42- and the increased amounts of OH- weakened electrostatic attraction. The results suggested that La(OH)3-modified copper tailings are promising adsorbents for highly efficient phosphate removal and provide a new method to realize the resource utilization of copper tailings.
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Affiliation(s)
- Haiyang Jin
- Basin Water Environmental Research Department, Changjiang River Scientific Research Institute, Wuhan, Hubei, 430010, China; Key Lab of Basin Water Resource and Eco-Environmental Science in Hubei Province, Wuhan, 430010, China
| | - Li Lin
- Basin Water Environmental Research Department, Changjiang River Scientific Research Institute, Wuhan, Hubei, 430010, China; Key Lab of Basin Water Resource and Eco-Environmental Science in Hubei Province, Wuhan, 430010, China.
| | - Xiaoyang Meng
- Brook Byers Institute of Sustainable Systems, School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, United States
| | - Linling Wang
- School of Environmental Science and Technology, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China
| | - Zhuo Huang
- Basin Water Environmental Research Department, Changjiang River Scientific Research Institute, Wuhan, Hubei, 430010, China; Key Lab of Basin Water Resource and Eco-Environmental Science in Hubei Province, Wuhan, 430010, China
| | - Min Liu
- Basin Water Environmental Research Department, Changjiang River Scientific Research Institute, Wuhan, Hubei, 430010, China; Key Lab of Basin Water Resource and Eco-Environmental Science in Hubei Province, Wuhan, 430010, China
| | - Lei Dong
- Basin Water Environmental Research Department, Changjiang River Scientific Research Institute, Wuhan, Hubei, 430010, China; Key Lab of Basin Water Resource and Eco-Environmental Science in Hubei Province, Wuhan, 430010, China
| | - Yuan Hu
- Basin Water Environmental Research Department, Changjiang River Scientific Research Institute, Wuhan, Hubei, 430010, China; Key Lab of Basin Water Resource and Eco-Environmental Science in Hubei Province, Wuhan, 430010, China
| | - John C Crittenden
- Brook Byers Institute of Sustainable Systems, School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, United States
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Quyen VT, Jitae K, Dalahmeh SS, Pham TH, Thanh DM, Le CL, Thang PQ, Viet NM, Van Thuan D, Nguyen TL. Enhanced recovery of phosphate as a value-added product from wastewater by using lanthanum modified carbon-fiber. Chemosphere 2021; 281:130737. [PMID: 34004520 DOI: 10.1016/j.chemosphere.2021.130737] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 04/19/2021] [Accepted: 04/28/2021] [Indexed: 06/12/2023]
Abstract
The aim of this study is to present the potential of activated carbon fiber (CF) impregnated with lanthanum (La) as a novel adsorbent (La-CF) of phosphate-phosphorus (P) and to assess the value-added due to P-recovery from wastewater using La-CF. The CF were loaded with La and the loaded CF was then calcined at 500 °C. The La-CF adsorbent was used in a series of batch experiments to characterize the adsorption of P at pH of 6-10 and P concentrations of 1-200 mg/L. Physical-chemical properties such as surface morphology, surface charge, surface area, and surface chemistry were determined for the La-CF. The La-CF exhibited adsorption capacity of 196.5 mg/g, fast sorption kinetics and high selectivity for P removal from aqueous solution. La-CF removed 97.3% of P from wastewater and achieved P-level to below 2 mg/L. It was repetitively reused over 10 times in successive cycles to remove P from wastewater. The value-added by recovery of P from wastewater was calculated at around 0.12 US$/L, demonstrating economic benefits of La-CF. In conclusion, the successful removal, recycling, and recovery value-added of P using La-CF adsorbent displayed good potential for developing the technology for treatment of wastewaters to recover valuable compounds such as phosphorus.
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Affiliation(s)
- Vu Thi Quyen
- Division of Computational Mathematics and Engineering, Institute for Computational Science, Ton Duc Thang University, Ho Chi Minh City, Viet Nam; Faculty of Environment & Labour Safety, Ton Duc Thang University, Ho Chi Minh City, Viet Nam.
| | - Kim Jitae
- Air Pollution Research Center, Institute of Urban Science, University of Seoul, Seoul, Republic of Korea.
| | - Sahar S Dalahmeh
- Department of Earth Sciences, Uppsala University, Villavägen 16, SE 752 36, Uppsala, Sweden.
| | - Thi-Huong Pham
- Department of Materials Sciences and Engineeirng, Gachon University, 1342 Seongnam-daero, Sujeong-gu, Seongnam, 13120, South Korea.
| | - Dang My Thanh
- Faculty of Environment & Labour Safety, Ton Duc Thang University, Ho Chi Minh City, Viet Nam.
| | - Cong Lap Le
- Department of Engineering Mechanics, Nha Trang university, Nha Trang, Viet Nam.
| | - Phan Quang Thang
- Institute of Environmental Technology (IET), Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi, Viet Nam.
| | - Nguyen Minh Viet
- VNU-Key laboratory of Advanced Materials for Green Growth, Faculty of Chemistry, University of Science, Vietnam National University, Hanoi, Viet Nam.
| | - Doan Van Thuan
- NTT Institute of High Technology, Nguyen Tat Thanh University, 300a Nguyen Tat Thanh Street, Dictrict 4, Ho Chi Minh City, Viet Nam.
| | - Thanh Luan Nguyen
- Department of Veterinary Medicine, Institute of Applied Science, Ho Chi Minh City University of Technology (HUTECH), Ho Chi Minh, Viet Nam.
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Li J, Zeng W, Liu H, Wu Y, Miao H. Performances and mechanisms of simultaneous nitrate and phosphate removal in sponge iron biofilter. Bioresour Technol 2021; 337:125390. [PMID: 34126359 DOI: 10.1016/j.biortech.2021.125390] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 06/02/2021] [Accepted: 06/05/2021] [Indexed: 06/12/2023]
Abstract
Sponge iron is a potential material for nitrogen and phosphate removal. To explore the performances and mechanisms of nitrogen and phosphate removal by sponge iron, a sponge iron biofilter was established. The results showed that nitrate was completely removed at HRT of 48 h without external carbon source and at HRT of 3 h with C/N ratio of 5. Furthermore, it was easy to achieve partial denitrification at HRT of 1 h with C/N ratio of 3. The mechanisms of nitrate removal were chemical reduction and nitrate dependent ferrous oxidation without external carbon source and heterotrophic denitrification with external carbon source. XPS result indicated that phosphate was removed by the formation of ferric phosphate precipitation. High throughput sequencing showed that iron-oxidizing bacteria Gallionellaceae was highly enriched in biofilter, accounting for 17.83%, which indicated that it was feasible to achieve autotrophic nitrate removal by sponge iron biofilter.
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Affiliation(s)
- Jianmin Li
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Beijing University of Technology, Beijing 100124, China
| | - Wei Zeng
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Beijing University of Technology, Beijing 100124, China.
| | - Hong Liu
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Beijing University of Technology, Beijing 100124, China
| | - Yuexi Wu
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Beijing University of Technology, Beijing 100124, China
| | - HaoHao Miao
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Beijing University of Technology, Beijing 100124, China
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Acosta-Herrera AA, Hernández-Montoya V, Castillo-Borja F, Pérez-Cruz MA, Montes-Morán MA, Cervantes FJ. Competitive adsorption of pollutants from anodizing wastewaters to promote water reuse. J Environ Manage 2021; 293:112877. [PMID: 34098353 DOI: 10.1016/j.jenvman.2021.112877] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 05/11/2021] [Accepted: 05/21/2021] [Indexed: 06/12/2023]
Abstract
Anodizing wastewater contains principally phosphate (PO43-) anions according to previous studies, but with the purpose to promote water reuse in this type of industry, a complete characterization of wastewater was made to remove other anions and cations also present in significant concentration. Particularly, the adsorption of sodium (Na+), potassium (K+), fluoride (F-), sulfate (SO42-) and phosphate (PO43-) was studied using different sorbents such as: coconut shell activated carbon, bone char, bituminous coal activated carbon, natural zeolite, silica, anionic and cationic exchange resins, a coated manganese-calcium zeolite, coconut shell activated carbon containing iron and iron hydroxide. All sorbents were characterized using FT-IR spectroscopy, potentiometric titration, nitrogen adsorption isotherms at 77 K, X-ray diffraction and SEM/EDX analysis to study the adsorption mechanism. The adsorption studies were performed in batch systems under constant agitation using both standard solutions of each ion and real anodizing wastewater. Results showed that, in general, the adsorption of all anions and cations is higher when mono-component standard solutions were used, since in the anodizing wastewater all species are competing for the active sites of the adsorbent. Na+ present in anodizing wastewater was efficiently adsorbed on coated manganese-calcium zeolite (20.55 mg/g) and natural zeolite (18.55 mg/g); while K+ was poorly adsorbed on all sorbents (less than 0.20 mg/g). Anions such as F-, SO42- and PO43-, were better adsorbed on the anionic resin (0.17, 45.38 and 2.92 mg/g, respectively), the iron hydroxide (0.14, 7.96 and 2.87 mg/g, respectively) and the bone char (0.34, 8.71 and 0.27 mg/g, respectively). All these results suggest that adsorption is a promising tertiary treatment method to achieve water reuse in the anodizing industry.
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Affiliation(s)
- Andrea Alejandra Acosta-Herrera
- TecNM/Instituto Tecnológico de Aguascalientes, Av. Adolfo López Mateos No. 1801 Ote, C.P. 20256, Aguascalientes, Ags., Mexico
| | - Virginia Hernández-Montoya
- TecNM/Instituto Tecnológico de Aguascalientes, Av. Adolfo López Mateos No. 1801 Ote, C.P. 20256, Aguascalientes, Ags., Mexico.
| | - Florianne Castillo-Borja
- TecNM/Instituto Tecnológico de Aguascalientes, Av. Adolfo López Mateos No. 1801 Ote, C.P. 20256, Aguascalientes, Ags., Mexico
| | - María A Pérez-Cruz
- Facultad de Ciencias Químicas, Universidad Autónoma de Puebla, Apdo. Postal J-55, Puebla, Pue., Mexico
| | - Miguel A Montes-Morán
- Instituto de Ciencia y Tecnología del Carbono, INCAR-CSIC, Francisco Pintado Fe 26, E-33011, Oviedo, Spain
| | - Francisco J Cervantes
- Laboratory for Research on Advanced Processes for Water Treatment, Engineering Institute, Campus Juriquilla, Universidad Nacional Autónoma de México (UNAM), Blvd. Juriquilla 3001, 76230, Querétaro, Mexico
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Maia MA, Dotto GL, Perez-Lopez OW, Gutterres M. Phosphate removal from industrial wastewaters using layered double hydroxides. Environ Technol 2021; 42:3095-3105. [PMID: 31975636 DOI: 10.1080/09593330.2020.1722257] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Accepted: 01/09/2020] [Indexed: 06/10/2023]
Abstract
In the present study, Mg-Al and Zn-Al layered double hydroxides (LDH) were synthesized by the co-precipitation method and employed to remove phosphate from synthetic aqueous solutions and industrial wastewaters. LDH were characterized by X-ray diffraction (XRD), N2 adsorption/desorption isotherms (BET method), thermal analyses (TG-DTA) and Fourier transform infrared spectroscopy (FTIR). XRD and TG-DTA analysis showed that Mg-Al and Zn-Al formed the LDH structure. Experimental adsorption data indicated that pseudo-second order model best described phosphate adsorption kinetics. Data of equilibrium experiments fitted well to Sips and Freundlich models for Mg-Al and Zn-Al, respectively. The effect of co-existing anions on the phosphate adsorption capacity was analyzed by utilizing industrial wastewater. The results showed that the phosphate removal decreases in the presence of other anions. Mg-Al adsorbent exhibited 74% removal of phosphate with a dosage of 5 g/L in industrial wastewater.
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Affiliation(s)
- Marina Avena Maia
- Laboratory for Leather and Environmental Studies - LACOURO, Department of Chemical Engineering, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
- Laboratory of Catalytic Processes - PROCAT, Department of Chemical Engineering, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Guilherme L Dotto
- Department of Chemical Engineering, Federal University of Santa Maria, UFSM, Santa Maria, Brazil
| | - Oscar W Perez-Lopez
- Laboratory of Catalytic Processes - PROCAT, Department of Chemical Engineering, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Mariliz Gutterres
- Laboratory for Leather and Environmental Studies - LACOURO, Department of Chemical Engineering, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
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Lei Y, Zhan Z, Saakes M, van der Weijden RD, Buisman CJN. Electrochemical recovery of phosphorus from wastewater using tubular stainless-steel cathode for a scalable long-term operation. Water Res 2021; 199:117199. [PMID: 34004442 DOI: 10.1016/j.watres.2021.117199] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 04/17/2021] [Accepted: 04/27/2021] [Indexed: 06/12/2023]
Abstract
Phosphorus (P) is an irreplaceable element, playing a vital role in living organisms, yet has limited earth reserves. The possibility of P recovery from wastewaters by electrochemically-induced calcium phosphate precipitation (ECaPP) was demonstrated previously. The current study presents a novel scalable prototype consisting of a column-shaped electrochemical reactor, a tubular stainless-steel cathode, and a Pt coated Ti anode. The adhesion of solids to the cathode, important for product recovery, was shown not to be negatively impacted by electrodes' vertical placement. The influence of current (density), hydraulic retention time (HRT), and initial phosphate concentration in this prototype were examined under continuous flow operation. The system accomplished the highest P removal rate (1267 mg/day) at 1.5 d HRT and 800 mA in treating undiluted cheese wastewater with 48.5 kWh/kg P. Moreover, the prototype showed high stability and efficiency (> 50%) over 173 days of continuous operation without performing maintenance. After turning off the current (0 mA), the system realized a surprising P removal jump up to 97.3%, revealing the delayed diffusion of hydroxide ions by the deposition layer. The calculation of CAPEX and OPEX of ECaPP in treating 100 m3 cheese wastewater per week indicates that the ECaPP plant can realize net-positive from the 12th year. The recovered solids have relatively high P content (> 9wt%) and insignificant contamination of heavy metals. Overall, the proven suitability of the scalable prototype can pave the way towards the actual adoption of the ECaPP process.
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Affiliation(s)
- Yang Lei
- School of Environmental Science and Engineering, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China; Wetsus, Centre of Excellence for Sustainable Water Technology, P.O. Box 1113, 8900CC Leeuwarden, The Netherlands; Department of Environmental Technology, Wageningen University and Research, P.O. Box 17, 6700AA Wageningen, The Netherlands.
| | - Zhengshuo Zhan
- School of Environmental Science and Engineering, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China; Wetsus, Centre of Excellence for Sustainable Water Technology, P.O. Box 1113, 8900CC Leeuwarden, The Netherlands; Department of Environmental Technology, Wageningen University and Research, P.O. Box 17, 6700AA Wageningen, The Netherlands
| | - Michel Saakes
- Wetsus, Centre of Excellence for Sustainable Water Technology, P.O. Box 1113, 8900CC Leeuwarden, The Netherlands
| | - Renata D van der Weijden
- Wetsus, Centre of Excellence for Sustainable Water Technology, P.O. Box 1113, 8900CC Leeuwarden, The Netherlands; Department of Environmental Technology, Wageningen University and Research, P.O. Box 17, 6700AA Wageningen, The Netherlands.
| | - Cees J N Buisman
- Wetsus, Centre of Excellence for Sustainable Water Technology, P.O. Box 1113, 8900CC Leeuwarden, The Netherlands; Department of Environmental Technology, Wageningen University and Research, P.O. Box 17, 6700AA Wageningen, The Netherlands
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Zhu D, Yang H, Chen X, Chen W, Cai N, Chen Y, Zhang S, Chen H. Temperature-dependent magnesium citrate modified formation of MgO nanoparticles biochar composites with efficient phosphate removal. Chemosphere 2021; 274:129904. [PMID: 33979927 DOI: 10.1016/j.chemosphere.2021.129904] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 01/28/2021] [Accepted: 02/02/2021] [Indexed: 06/12/2023]
Abstract
Nano-MgO biochar composites (nMBCs) have been considered as potential adsorbents for phosphate removal from aqueous solution. It is an effective strategy to improve P removal efficiency that adjustment of the size, distribution and crystallinity of MgO particles embedded into the carbon matrix. Herein, we prepared a highly efficient phosphate adsorbent by co-pyrolysis of lotus seedpod and magnesium citrate and studied its adsorption mechanisms. Results showed that the uniformly dispersed MgO nanoparticle was formed on the surface of nMBCs with the temperature increasing, with the particles size ranging from 3 to 10 nm. Furthermore, high temperature promoted the formation of a large amount of reactive lattice oxygen, which was demonstrated to be the main active adsorption site, thus the phosphate immobilization capacity of nMBCs was greatly improved with the pyrolysis temperature increasing from 450 °C to 750 °C. Besides, some stable CO bonds were formed due to the catalysis of Mg2+, which could bond to HPO42-/H2PO4- by hydrogen bond, enhancing the adsorption performance. The isotherm adsorption experiment showed that MBC-750 achieved an excellent phosphorus adsorption amount of 452.752 mg-P/g. The effectiveness of nMBCs is enhanced and a method for producing an effective nanocomposite adsorbent material for removing phosphate from wastewater is provided.
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Affiliation(s)
- Danchen Zhu
- State Key Laboratory of Coal Combustion, School of Power and Energy Engineering, Huazhong University of Science and Technology, 430074, Wuhan, China
| | - Haiping Yang
- State Key Laboratory of Coal Combustion, School of Power and Energy Engineering, Huazhong University of Science and Technology, 430074, Wuhan, China
| | - Xu Chen
- State Key Laboratory of Coal Combustion, School of Power and Energy Engineering, Huazhong University of Science and Technology, 430074, Wuhan, China
| | - Wei Chen
- State Key Laboratory of Coal Combustion, School of Power and Energy Engineering, Huazhong University of Science and Technology, 430074, Wuhan, China
| | - Ning Cai
- State Key Laboratory of Coal Combustion, School of Power and Energy Engineering, Huazhong University of Science and Technology, 430074, Wuhan, China
| | - Yingquan Chen
- State Key Laboratory of Coal Combustion, School of Power and Energy Engineering, Huazhong University of Science and Technology, 430074, Wuhan, China
| | - Shihong Zhang
- State Key Laboratory of Coal Combustion, School of Power and Energy Engineering, Huazhong University of Science and Technology, 430074, Wuhan, China.
| | - Hanping Chen
- State Key Laboratory of Coal Combustion, School of Power and Energy Engineering, Huazhong University of Science and Technology, 430074, Wuhan, China
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Akarsu C, Deveci EÜ, Gönen Ç, Madenli Ö. Treatment of slaughterhouse wastewater by electrocoagulation and electroflotation as a combined process: process optimization through response surface methodology. Environ Sci Pollut Res Int 2021; 28:34473-34488. [PMID: 33651288 DOI: 10.1007/s11356-021-12855-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 02/04/2021] [Indexed: 06/12/2023]
Abstract
The contamination of water with organic compounds has become an increasing concern in today's world. The cost-effective and sustainable treatment of industrial wastewaters is a major challenge. Advanced treatment techniques such as electrocoagulation-electroflotation offer economic and reliable solutions for the treatment of industrial wastewater. In this study, the electrocoagulation-electroflotation method was investigated for the simultaneous removal of chemical oxygen demand, total phosphorus, total Kjeldahl nitrogen, and color via response surface methodology. Factors such as electrode combination (Fe and Al), current density (10-20 mA/cm2), pH (3.0-9.0), and electrode distance (1-3 cm) were investigated in the treatment of wastewater to obtain maximum treatment efficiency. It was determined that chemical oxygen demand, total Kjeldahl nitrogen, total phosphorus, and color removal reached up to 94.0%, 77.5%, 97.0%, and 99.0%, respectively. Treatment costs were found as $0.71 with the Al-Fe electrode combination.
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Affiliation(s)
- Ceyhun Akarsu
- Department of Environmental Engineering, Faculty of Engineering, Mersin University, 33343, Mersin, Turkey.
| | - Ece Ümmü Deveci
- Department of Environmental Engineering, Faculty of Engineering, Niğde Ömer Halisdemir University, 51240, Niğde, Turkey
| | - Çağdaş Gönen
- Department of Environmental Engineering, Faculty of Engineering, Niğde Ömer Halisdemir University, 51240, Niğde, Turkey
| | - Özgecan Madenli
- Department of Environmental Engineering, Faculty of Engineering, Niğde Ömer Halisdemir University, 51240, Niğde, Turkey
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Carbinatti C, da Conceição FT, Moruzzi RB, Menegário AA. Functionalization of kaolinite for removal of phosphate from urban sewage. MethodsX 2021; 8:101423. [PMID: 34430318 PMCID: PMC8374487 DOI: 10.1016/j.mex.2021.101423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 06/17/2021] [Indexed: 11/22/2022] Open
Abstract
The PO4 3- widespread in urban sewages promotes eutrophication of water sources, with harmful effects to natural life and endanger human health. The removal of PO4 3- from urban sewage requires treatment at tertiary level, with high costs and low efficiency in most cases. Thus, a functionalization method for surface modification of kaolinite was proposed to improve the removal of PO4 3- from urban sewage. The kaolinite commercial did not remove PO4 3- from aqueous solution. However, the functionalized kaolinite (FK) was efficient, with a maximum removal capacity of 8.4 ± 0.1 mg PO4 3-/L, within less than 1 min of reaction. The removal of PO4 3- is associated with precipitation of pyromorphite, a mineral with low solubility (Ksp < 10-79,6). Finally, real urban sewage samples (raw and treated) were also tested for removal of PO4 3- using FK, confirming its effectiveness. The central aspects of this development are:•Functionalized kaolinite (FK), with Pb(II), for removal of PO4 3- from urban sewage was studied.•The FK was efficient for removal of up to 8.4 mg PO4 3-/L from aqueous solution, within a short reaction time.•The precipitation of pyromorphite was the mechanism responsible for removal of PO4 3- and FK efficiency have been confirmed for real urban sewage samples.
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Affiliation(s)
- Camilla Carbinatti
- UNESP - Universidade Estadual Paulista, Instituto de Geociências e Ciências Exatas, Avenida 24-A, no 1515, CEP 13506-900, Bela Vista, Rio Claro, São Paulo, Brazil
| | - Fabiano Tomazini da Conceição
- UNESP - Universidade Estadual Paulista, Instituto de Geociências e Ciências Exatas, Avenida 24-A, no 1515, CEP 13506-900, Bela Vista, Rio Claro, São Paulo, Brazil
| | - Rodrigo Braga Moruzzi
- UNESP - Universidade Estadual Paulista, Instituto de Geociências e Ciências Exatas, Avenida 24-A, no 1515, CEP 13506-900, Bela Vista, Rio Claro, São Paulo, Brazil
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Yan C, Ma T, Wang M, Yang S, Yang L, Gao Y. Electrolysis-enhanced ecological floating bed and its factors influencing nitrogen and phosphorus removal in simulated hyper-eutrophic water. Environ Sci Pollut Res Int 2021; 28:22832-22842. [PMID: 33432406 DOI: 10.1007/s11356-020-12261-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 12/28/2020] [Indexed: 06/12/2023]
Abstract
To enhance ammonia nitrogen (NH3-N) and phosphate (PO43--P) removal in hyper-eutrophic water, electrolysis-enhanced ecological floating bed (EEEFB) was designed with a Mg-Al alloy anode, a Ir-Ta-Ti metal oxide-coated titanium anode, and an Fe anode with the same graphite cathode. The results showed that the Mg-Al alloy anode with graphite cathode had a better ability to enhance NH3-N and PO43--P removal. When the current density was 0.37 mA·cm-2, the electrolysis time was 24 h/d, and the net removal rates of NH3-N and PO43--P were 62% and 99.4%, respectively. In winter, the purification efficiencies of NH3-N and PO43--P were as high as 7388.4 mg·m-2 and 4297.5 mg·m-2, respectively, by EEEFBs which were significantly higher than the traditional ecological floating bed (p < 0.05). Scanning electron microscopy (SEM) and X-ray spectrometry confirmed that the PO43--P was deposited in the sediment of EEEFBs with Mg-Al alloy anode and Fe anode.
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Affiliation(s)
- Cheng Yan
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, People's Republic of China
| | - Tangming Ma
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, People's Republic of China
| | - Mingxuan Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, People's Republic of China
| | - Shunqing Yang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, People's Republic of China
| | - Liuyan Yang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, People's Republic of China
| | - Yan Gao
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, People's Republic of China.
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Van Truong T, Kim DJ. Phosphate removal using thermally regenerated Al adsorbent from drinking water treatment sludge. Environ Res 2021; 196:110877. [PMID: 33711322 DOI: 10.1016/j.envres.2021.110877] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 01/18/2021] [Accepted: 02/09/2021] [Indexed: 06/12/2023]
Abstract
Alum sludge (AS) is an abundant and ubiquitous residue generated from drinking water treatment plants. AS was thermally treated to use as an adsorbent for phosphate removal from wastewater. Organic matter in the AS was a potential competitor and can deter phosphate adsorption. Pyrolysis and drying of AS were adopted to enhance phosphate removal by eliminating organic matter and enriching Al content. Adsorption kinetics showed that phosphate removal was highest with the AS pyrolyzed at 700 °C followed by 500 °C, air-dried and oven-dried (105 °C). Adsorption kinetic modelling showed that chemisorption is the operative mechanism of phosphate removal in all the AS. Adsorption isotherms also showed that the pyrolyzed AS and air-dried AS had similar adsorption capacity of 30.83-34.53 mg P/g AS. Al dissolution was less than 2 mg/g Al in all the AS samples. COD release was significant in the dried AS, up to 8.0 mg COD/g AS, whereas the pyrolyzed AS released less than 1 mg COD/g AS. FTIR and SEM-EDS analyses of the AS after phosphate adsorption showed the formation of aluminum-phosphate complex. Overall, the pyrolysis of AS at 700 °C was most effective in removing phosphate without leaving secondary pollution.
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Affiliation(s)
- Tuan Van Truong
- Department of Environmental Sciences and Biotechnology & Institute of Energy and Environment, Hallym University, 1 Okcheon, Chuncheon, 24251, South Korea
| | - Dong-Jin Kim
- Department of Environmental Sciences and Biotechnology & Institute of Energy and Environment, Hallym University, 1 Okcheon, Chuncheon, 24251, South Korea.
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49
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Zong E, Wang C, Yang J, Zhu H, Jiang S, Liu X, Song P. Preparation of TiO 2/cellulose nanocomposites as antibacterial bio-adsorbents for effective phosphate removal from aqueous medium. Int J Biol Macromol 2021; 182:434-444. [PMID: 33838194 DOI: 10.1016/j.ijbiomac.2021.04.007] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 03/13/2021] [Accepted: 04/02/2021] [Indexed: 12/15/2022]
Abstract
The design of environmentally benign bio-adsorbents for the removal of phosphate from aqueous medium was an economic and effective way for controlling eutrophication. Herein, we prepared three kinds of TiO2/cellulose (CE-Ti) nanocomposites by a facile hydrolysis-precipitation method, and used them as antibacterial bio-adsorbents for the removal of phosphate from aqueous medium. Multiple techniques including Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) and thermogravimetric analysis (TGA) were employed to characterize the nanostructure and characteristics of the prepared CE-Ti nanocomposite. The adsorption capacity of the CE-Ti was 19.57 mg P g-1 according to the Langmuir model, which was 6 times higher than that of CE. Importantly, the bacterial inhibition zone of the CE-Ti was 2.88 mm (that of CE was 0 mm), indicating that CE-Ti had good antibacterial activity that could reduce the attachment of the microorganism to the surface of CE-Ti, which was suitable for long-term phosphate removal. Moreover, the CE-Ti had good adsorption selectivity and anti-interference capability, according to interfering ions and ion strength experiments. Furthermore, Ti4+ leakage tests suggested that CE-Ti was highly stable under acidic, neutral and alkali conditions. These results indicated that the CE-Ti nanocomposite could be utilized as a promising antibacterial bio-adsorbent for effective phosphate removal from aqueous medium.
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Affiliation(s)
- Enmin Zong
- College of Life Science, Taizhou University, 1139 Shifu Street, Taizhou 318000, PR China; School of Earth Sciences and Engineering, Nanjing University, Nanjing 210093, PR China
| | - Chen Wang
- College of Life Science, Taizhou University, 1139 Shifu Street, Taizhou 318000, PR China
| | - Jiayao Yang
- School of Engineering, Zhejiang A & F University, 666 Wusu Street, Hangzhou 311300, PR China
| | - Hangxuan Zhu
- School of Engineering, Zhejiang A & F University, 666 Wusu Street, Hangzhou 311300, PR China
| | - Shengtao Jiang
- College of Life Science, Taizhou University, 1139 Shifu Street, Taizhou 318000, PR China
| | - Xiaohuan Liu
- School of Engineering, Zhejiang A & F University, 666 Wusu Street, Hangzhou 311300, PR China.
| | - Pingan Song
- Centre for Future Materials, University of Southern Queensland, Springfield 4300, Australia
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Sun S, Gao M, Wang Y, Qiu Q, Han J, Qiu L, Feng Y. Phosphate removal via biological process coupling with hydroxyapatite crystallization in alternating anaerobic/aerobic biofilter reactor. Bioresour Technol 2021; 326:124728. [PMID: 33508642 DOI: 10.1016/j.biortech.2021.124728] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 01/09/2021] [Accepted: 01/12/2021] [Indexed: 05/25/2023]
Abstract
In this work, a laboratory-scale alternating anaerobic/aerobic biofilter (A/O BF) filled with self-made steel slag media was constructed, where the integrated biological and crystalline phosphorus removal process was realized to remove phosphorus and achieve phosphorus recovery from wastewater. Phosphorus accumulating organisms (PAOs) were successfully enriched within 30 days operation, the maximum phosphate removal efficiency was close to 80% under the optimal conditions with the anaerobic time of 34 h, HRT of 4 h and influent COD of 300 mg/L. The analysis of SEM-EDS and XRD indicated that hydroxyapatite (HAP) crystals were formed inside biofilms without addition of chemical reagents. The high phosphate environment created by PAOs and the release of Ca2+ from the steel slag media might be responsible for the generation of HAP. These findings have crucial implications for the application BF technology to remove and recover phosphorus from wastewater.
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Affiliation(s)
- Shaofang Sun
- School of Civil Engineering and Architecture, University of Jinan, Jinan 250022, China; Research Center for Functional Material & Water Purification Engineering of Shandong Province, Jinan 250022, China
| | - Mingchang Gao
- School of Civil Engineering and Architecture, University of Jinan, Jinan 250022, China
| | - Yue Wang
- School of Civil Engineering and Architecture, University of Jinan, Jinan 250022, China
| | - Qi Qiu
- School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China
| | - Junli Han
- School of Civil Engineering and Architecture, University of Jinan, Jinan 250022, China
| | - Liping Qiu
- School of Civil Engineering and Architecture, University of Jinan, Jinan 250022, China; Research Center for Functional Material & Water Purification Engineering of Shandong Province, Jinan 250022, China.
| | - Yan Feng
- School of Civil Engineering and Architecture, University of Jinan, Jinan 250022, China; Research Center for Functional Material & Water Purification Engineering of Shandong Province, Jinan 250022, China
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