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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. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 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] [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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2
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Wang X, Li Y, Wen X, Liu L, Zhang L, Long M. Cooperation of ferrous ions and hydrated ferric oxide for advanced phosphate removal over a wide pH range: Mechanism and kinetics. WATER RESEARCH 2024; 249:120969. [PMID: 38086202 DOI: 10.1016/j.watres.2023.120969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Revised: 11/16/2023] [Accepted: 12/01/2023] [Indexed: 01/03/2024]
Abstract
Excessive phosphate loading leads to eutrophication problems in rivers or lakes and causes serious environmental and economic damages, urging new technologies to reduce effluent phosphate at ultra-low levels. As a promising candidate, adsorption over metal oxides is restricted by the released hydroxide anions (OH-) through ligand exchange, which elevates pH and suppresses further adsorption. In this contribution, we found ferrous ions (Fe2+) significantly enhance phosphate removal over hydrated ferric oxide (HFO) in a wide pH range via a cooperation of adsorption and precipitation, and clarified the synergistic mechanism by a series of characterizations and the modified models of adsorption isotherms and pseudo second-order kinetics. The combination of Fe2+and HFO removed up to 51.7 mg/g of phosphate at pH 4.0, with 43.6 and 8.1 mg/g attributing to adsorption and precipitation, respectively. In comparison to HFO alone, HFO/Fe2+ system achieved 2.2-fold increase in phosphate removal, 1.9-fold increase in phosphate adsorption capacity, and 3.4-fold increase in phosphate removal rate. The enhancement is understood by that hydroxide anions released from ligand exchange over HFO are neutralized by protons produced from the oxidative precipitation of ferrous ions. The HFO/Fe2+ combining system is promising to realize advanced removal of low concentration phosphate containing wastewater, and these findings bring new insights for the development of novel phosphate removal technologies through a rational design of a combination process.
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Affiliation(s)
- Xiaohui Wang
- School of Environmental Science and Engineering, Key Laboratory of Thin Film and Microfabrication Technology (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yang Li
- School of Environmental Science and Engineering, Key Laboratory of Thin Film and Microfabrication Technology (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xue Wen
- School of Environmental Science and Engineering, Key Laboratory of Thin Film and Microfabrication Technology (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China
| | - Liyan Liu
- Student Innovation Center, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Lizhi Zhang
- School of Environmental Science and Engineering, Key Laboratory of Thin Film and Microfabrication Technology (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China
| | - Mingce Long
- School of Environmental Science and Engineering, Key Laboratory of Thin Film and Microfabrication Technology (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China.
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Lu Y, Lin J, Wu X, Zhan Y. Control of phosphorus release from sediment by hydrous zirconium oxide combined with calcite, bentonite and zeolite. CHEMOSPHERE 2023; 332:138892. [PMID: 37169085 DOI: 10.1016/j.chemosphere.2023.138892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Revised: 04/20/2023] [Accepted: 05/07/2023] [Indexed: 05/13/2023]
Abstract
This study investigated the effectiveness and mechanism for the control of internal phosphorus (P) liberation from sediment by hydrous zirconium oxide (HZrO2) combined with calcite, bentonite and zeolite. The results suggested that coexisting calcite, calcium-modified bentonite (CaBT) and calcium-modified zeolite (CaZ) all had the ability to promote the adsorption of phosphate (PO43-) onto HZrO2. The mechanisms of PO43- elimination by HZrO2/calcite mixture involved the adsorption of PO43- on calcite, the precipitation of PO43- with Ca2+, and the inner-sphere complexation of PO43- with HZrO2. The amendment of sediment with HZrO2/calcite, HZrO2/CaBT or HZrO2/CaZ mixture can effectively prevent the sedimentary P release, and the immobilization of mobile P in the sediment and the uptake of dissolved reactive P (DRP) from the interstitial water by the amendment material played a key role in the control of P release from sediment by the combined amendment. Capping sediment with HZrO2/calcite, HZrO2/CaBT or HZrO2/CaZ mixture also can effectively intercept sediment P release, and the formation of P static layer attributed to the uptake of interstitial water DRP and DGT (diffusive gradient in thin-films)-unstable P in the upper sediment by the capping material was a key to the inhibition of sedimentary P migration into the overlying water by the combined capping. The great majority of P immobilized by the HZrO2/calcite, HZrO2/CaBT or HZrO2/CaZ combined covering layer is stable P and it has a low re-releasing risk under dissolved oxygen-deficit and pH 5-9 condition. The stability of P bound by the combined covering layer was larger than that by the single HZrO2 covering layer. The results of this research show that the combined use of HZrO2 and calcite, HZrO2 and CaBT, or HZrO2 and CaZ as a capping material has great potential in the reduction of sediment P loading.
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Affiliation(s)
- Yuqian Lu
- College of Ecology and Environment, Shanghai Ocean University, Shanghai, 201306, China
| | - Jianwei Lin
- College of Ecology and Environment, Shanghai Ocean University, Shanghai, 201306, China.
| | - Xugan Wu
- College of Ecology and Environment, Shanghai Ocean University, Shanghai, 201306, China.
| | - Yanhui Zhan
- College of Ecology and Environment, Shanghai Ocean University, Shanghai, 201306, China
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Wei T, Zhang Z, Zhang G, Zhu J. Advanced removal of phosphate from water by a novel lanthanum manganese oxide: Performance and mechanism. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:62367-62375. [PMID: 36943569 DOI: 10.1007/s11356-023-26526-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 03/14/2023] [Indexed: 05/10/2023]
Abstract
A novel lanthanum manganese oxide (La0.96Mn0.96O3, LMO) was synthesized for advanced phosphate removal to alleviate water eutrophication process. The adsorbent had a specific surface area of 18.51 m2/g with pH at point of zero charge of 6.6; exhibited excellent phosphate adsorption capacity of 168.4 mg/g; performed well in a wide pH range from 3 to 10. The phosphate removal was not interfered by coexisting ions. The adsorbent remained 94.8% of its initial adsorption efficiency after reused for four times. Phosphate adsorption process conformed to pseudo-second-order model (R2=0.992) and Langmuir model (R2=0.935). Ligand exchange and electrostatic interaction played important roles in phosphate removal. In addition, the actual sewage secondary effluent was used to further verify the phosphate removal performance of LMO. For practical water treatment, the LMO showed high phosphate removal efficiency of 83.4% and low residual P of 0.1 mg/L. LMO is a potential candidate for low-concentration phosphate removal in real water environment.
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Affiliation(s)
- Ting Wei
- Institute of Resources and Environment, Beijing Academy of Science and Technology, Beijing, 100095, China
| | - Zhongguo Zhang
- Institute of Resources and Environment, Beijing Academy of Science and Technology, Beijing, 100095, China
| | - Guangming Zhang
- School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, 300130, China.
| | - Jia Zhu
- School of Construction and Environment Engineering, Shenzhen Polytechnic, Shenzhen, 518055, China
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Cheng Y, Xie Q, Wu Z, Ji L, Li Y, Cai Y, Jiang P, Yu B. Mechanistic insights into the selective adsorption of phosphorus from wastewater by MgO(100)-functionalized cellulose sponge. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 868:161646. [PMID: 36657681 DOI: 10.1016/j.scitotenv.2023.161646] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Revised: 01/12/2023] [Accepted: 01/12/2023] [Indexed: 06/17/2023]
Abstract
Metal oxides have remained state-of-the-art adsorbents for recovering phosphorus from aqueous solutions, but their practical application is still limited by their unsatisfactory adsorption capacities and selectivities in wastewater. Here, using MgO as a model metal oxide, the strategy of employing porous cellulose sponge to support metal oxides featuring exposed specific crystal facets was proposed to develop promising phosphate adsorbents. The phosphate adsorption isotherms and kinetics were measured and the phosphate adsorption mechanism was explored. The results show that cellulose sponge-supported MgO(100) (C-MgO(100)) has a saturation capacity of 28.3 mg P/g, over ten times higher than MgO(100) particles. Importantly, the phosphate adsorption properties of C-MgO(100) are almost not affected in wastewater, demonstrating its exceptional selectivity for phosphate adsorption. In contrast, the saturation capacity of MgO(111)-functionalized cellulose sponge is obviously declined in wastewater. Experimental together with theoretical analyses indicate that phosphate is chemically adsorbed on C-MgO(100) with obvious electrons transfer from the p-orbital of phosphate, and the adsorption energy of C-MgO(100) towards phosphate is maintained in the presence of coexisting anions. Ultimately, regeneration experiments reveal that a regenerant formulation composed of KOH (wt.1 %) and tap water is suitable for the regeneration of C-MgO(100) with >82.6 % phosphate desorption efficiencies after 5 cycles, further confirming its potential in practical application for the treatment of real water.
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Affiliation(s)
- Yang Cheng
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, PR China; School of Environment and Resources, Zhejiang A&F University, Hangzhou 311300, PR China
| | - Qian Xie
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, PR China; School of Environment and Resources, Zhejiang A&F University, Hangzhou 311300, PR China
| | - Zhendong Wu
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, PR China
| | - Long Ji
- College of Engineering, Huazhong Agricultural University, Number 1, Shizishan Street, Wuhan 430070, PR China
| | - Yongfu Li
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, PR China; School of Environment and Resources, Zhejiang A&F University, Hangzhou 311300, PR China
| | - Yanjiang Cai
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, PR China; School of Environment and Resources, Zhejiang A&F University, Hangzhou 311300, PR China
| | - Peikun Jiang
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, PR China; School of Environment and Resources, Zhejiang A&F University, Hangzhou 311300, PR China
| | - Bing Yu
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, PR China; School of Environment and Resources, Zhejiang A&F University, Hangzhou 311300, PR China.
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Mhlarhi N, Gitari WM, Ayinde WB, Tavengwa NT, Mudzielwana R, Izevbekhai OU. Biosorption of toxic metal ions (Cr +6, Cd 2+) and nutrients (PO 43-) from aqueous solution by diatom biomass. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2023; 58:483-497. [PMID: 37021346 DOI: 10.1080/10934529.2023.2196929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 03/08/2023] [Accepted: 03/17/2023] [Indexed: 06/19/2023]
Abstract
This paper evaluates diatom biomass as a biosorbent for removing Cr+6, Cd2+, and PO43- ions from water. The diatom was characterized by X-ray Diffraction (XRD), Fourier Transform Infrared (FTIR), and Scanning Electron Microscopy (SEM-EDS) for its crystallinity, functional groups, and morphology. A batch sorption study was conducted to evaluate the parameters influencing Cr+6, Cd2+, and PO43- ions adsorption, and the mechanisms were explored. The FTIR spectra revealed Si-O, O-H, N-H, and C-O as the main functional groups present on the surface of the adsorbent. The SEM showed a rough and irregular-shaped morphology, while the EDS indicated that the diatom biomass is an aluminosilicate material. The rate-limiting steps for Cr+6 and Cd2+ were pseudo-first order, and pseudo-second order sorption favored PO43- based on their R2 values. Moreover, the dominant adsorption model that best described the equilibrium data was the Freundlich isotherm. The maximum adsorption capacities obtained for Cr+6 was 5.66 (mg/g), and Cd2+ was 5.27 (mg/g) at 313 K while PO43- was 19.13 (mg/g) at 298 K. The thermodynamic data revealed that the reaction was endothermic for Cd2+ and exothermic for Cr+6 and PO43-, respectively. Diatom biomass was observed to be a promising bio-sorbent for removing Cr6+, Cd2+ and PO42- from wastewater.
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Affiliation(s)
- Nsovo Mhlarhi
- Department of Geography and Environmental Sciences, Faculty of Science, Engineering and Agriculture, University of Venda, Thohoyandou, South Africa
- Department of Water and Sanitation, Resource Quality Information Services (RQIS), Roodeplaat, Pretoria, South Africa
| | - Wilson Mugera Gitari
- Department of Geography and Environmental Sciences, Faculty of Science, Engineering and Agriculture, University of Venda, Thohoyandou, South Africa
- School of Chemical Sciences, Technical University of Kenya, Nairobi, Kenya
| | - Wasiu Babatunde Ayinde
- Department of Geography and Environmental Sciences, Faculty of Science, Engineering and Agriculture, University of Venda, Thohoyandou, South Africa
| | - Nikita Tawanda Tavengwa
- Department of Chemistry, Faculty of Science, Engineering and Agriculture, University of Venda, Thohoyandou, South Africa
| | - Rabelani Mudzielwana
- Department of Chemistry, Faculty of Science, Engineering and Agriculture, University of Venda, Thohoyandou, South Africa
| | - Oisaemi Uduagele Izevbekhai
- Department of Chemistry, Faculty of Science, Engineering and Agriculture, University of Venda, Thohoyandou, South Africa
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Song L, Nan J, Liu B, Wu F. Novel three-dimensional Ti 3C 2-MXene embedded zirconium alginate aerogel adsorbent for efficient phosphate removal in water. CHEMOSPHERE 2023; 319:138016. [PMID: 36731670 DOI: 10.1016/j.chemosphere.2023.138016] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 01/26/2023] [Accepted: 01/28/2023] [Indexed: 06/18/2023]
Abstract
Excessive phosphorus in water causes environmental security problems like eutrophication. Advanced two-dimensional material MXene has attracted raising attention in aquatic adsorption, while lack of selectivity and difficult recovery limit its application in phosphate removal. In this study, Ti3C2-MXene embedded zirconium-crosslinked SA (MX-ZrSA) beads were synthesized and their phosphate adsorption performance under different conditions was assessed. Investigations using SEM/EDS, XRD, BET, TGA and contact angle meter reveal that the addition of Ti3C2-MXene enhanced the thermal stability, mechanical strength, hydrophilicity, and formed loose network-like mesoporous inner structure with large surface area. The theoretical maximum adsorption capacity was 492.55 mg P/g and was well fitted by Freundlich and optimized Langmuir models. The Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy analysis showed that chemisorption was involved, and the formation of Zr-O-P and Ti-O-P complexes accounted for high selectivity and affinity to phosphate. The adsorption experiments in real waters and lab-scale continuous flow Anaerobic-Anoxic-Oxic reactor further indicated the application potential of MX-ZrSA beads. Our study will provide insight into MXene and SA aerogel synergistic adsorption of aquatic contaminants and help with the removal and recovery of finite phosphorus resource.
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Affiliation(s)
- Langrun Song
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Jun Nan
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China.
| | - Bohan Liu
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Fangmin Wu
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China
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Mashkovtsev M, Zhirenkina N, Kharisova K, Buinachev S, Zhidkov I, Rychkov V. Rationale for development of high surface zirconium hydroxide: Synthesis route and mechanism discussion. POWDER TECHNOL 2023. [DOI: 10.1016/j.powtec.2023.118299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
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He Q, Zhao H, Teng Z, Wang Y, Li M, Hoffmann MR. Phosphate removal and recovery by lanthanum-based adsorbents: A review for current advances. CHEMOSPHERE 2022; 303:134987. [PMID: 35597457 DOI: 10.1016/j.chemosphere.2022.134987] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 04/25/2022] [Accepted: 05/13/2022] [Indexed: 06/15/2023]
Abstract
Controlling eutrophication and recovering phosphate from water bodies are hot issues in the 21st century. Adsorption is considered to be the best method for phosphate removal because of its high adsorption efficiency and fast removal rate. Among the many adsorbents, lanthanum (La)-based adsorbents have been paid more and more attention due to their strong affinity to phosphorus. This paper reviews research of phosphate adsorption on La-based adsorbents in different La forms, including lanthanum oxide/hydroxide, lanthanum mixed metal oxide/hydroxide, lanthanum carbonate, La3+, La-based metal-organic framework (La-MOF) and La-MOF derivatives. The La-based adsorbents can be loaded on many carriers, such as carbon material, clay minerals, porous silica, polymers, industrial wastes, and others. We find that lanthanum oxide/hydroxide and La3+ adsorbents are mostly studied, while those in the forms of lanthanum carbonate, La-MOF, and La-MOF derivatives are relatively few. The kinetic process of most phosphate adsorption is pseudo-second-order and the isotherm process is in accordance with the Langmuir model. The cost of La-based and other traditional adsorbents was compared. The adsorption mechanisms are categorized as electrostatic attraction, ligand exchange, Lewis acid-base interaction, ion exchange and surface precipitation. Besides, regeneration methods of La-based adsorbents are mainly acid, alkali, and salt-alkali. In addition, the La-based adsorbents after absorbing phosphate can be directly used as a slow-release fertilizer. This review provides a basis for the research on phosphate adsorption by La-based adsorbents. It should be carried out to further develop La-based materials with high adsorption capacity and good regeneration ability. Meanwhile, studies have been conducted on the reuse of phosphate after desorption, which needs more attention in future research.
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Affiliation(s)
- Qinqin He
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China; Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China
| | - Hongjun Zhao
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China; Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China
| | - Zedong Teng
- Innovation Academy for Green Manufacture, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
| | - Yin Wang
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China; Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China
| | - Min Li
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China; Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China.
| | - Michael R Hoffmann
- Linde-Robinson Laboratories, California Institute of Technology, Pasadena, CA, 91125, United States.
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Zhang L, Ai T, Tian X, Dai S. An efficient removal mechanism for different hydrophilic antibiotics from aquatic environments by Cu-Al-Fe-Cr quasicrystals. RSC Adv 2022; 12:9995-10004. [PMID: 35424950 PMCID: PMC8965688 DOI: 10.1039/d1ra08095d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Accepted: 03/22/2022] [Indexed: 11/21/2022] Open
Abstract
The work studied the adsorption properties and mechanism of Cu-Al-Fe-Cr quasicrystals (QCs) for the adsorption of ibuprofen (IBU), tedizolid phosphate (TZD), and sulbactam sodium (SAM) for the first time. The experimental results showed that quasicrystals were good adsorbents with great potential. The structure, surface morphology, and elemental composition of QCs were investigated by XPS, XRD, SEM, EDX, particle size, DSC-TG, and FTIR. The adsorption pH, kinetics, thermodynamics, and isotherms of IBU, TZD, and SAM in QCs were systematically studied. QCs had good adsorption performance for antibiotics, and the adsorption capacities of IBU, TZD, and SAM were 46.964, 49.206, and 35.292 mg g-1 at the concentration of 25 mg L-1, respectively. The surface charge and hydrophobicity of QCs were affected by changing pH, thereby affecting the adsorption performance of QCs. The main driving forces of adsorption included electrostatic force and hydrophobicity.
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Affiliation(s)
- Lei Zhang
- School of Chemical Engineering, University of Science and Technology Liaoning Anshan 114051 PR China
| | - Tian Ai
- School of Chemical Engineering, University of Science and Technology Liaoning Anshan 114051 PR China
| | - Xiaoxi Tian
- School of Chemical Engineering, University of Science and Technology Liaoning Anshan 114051 PR China
| | - Shujuan Dai
- School of Mining Engineering, University of Science and Technology Liaoning Anshan PR China
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Enhanced phosphate removal by nano-lanthanum hydroxide embedded silica aerogel composites: Superior performance and insights into specific adsorption mechanism. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.120365] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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12
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Liu N, Chen W, Lin J, Zhan Y. Contrasting effect of zirconium-, iron-, and zirconium/iron-modified attapulgites capping and amendment on phosphorus mobilization in sediment. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:18508-18526. [PMID: 34689275 DOI: 10.1007/s11356-021-16979-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 10/06/2021] [Indexed: 06/13/2023]
Abstract
In this research, the sorption characteristics and mechanism of phosphate on zirconium-modified attapulgite (Zr-ATP), iron-modified attapulgite (Fe-ATP), and zirconium/iron co-modified attapulgite (Zr/Fe-ATP) prepared by a simple impregnation method were studied, and the impacts of Zr-ATP, Fe-ATP, and Zr/Fe-ATP amendment and capping on the migration of phosphorus (P) from sediments to overlying waters were investigated. The results showed that Zr-ATP and Zr/Fe-ATP possessed stronger adsorption ability for phosphate in aqueous solution than Fe-ATP. The ligand replacement of the hydroxyl group with the phosphate anion to form the inner-sphere phosphate complex played a crucial role in the adsorption process of phosphate on Zr-ATP, Fe-ATP, and Zr/Fe-ATP. Most of the phosphate ions bound by Zr-ATP and Zr/Fe-ATP were in the form of caustic soda solution-extractable inorganic P (NaOH-IP) and residual P (Res-P), and it is hard for these P species to be re-released into water under the circumstances of reducing environment and normal pH (5-9). The ratio of mobile P to total P of Fe-ATP loaded with phosphate was much higher than those of Zr-ATP and Zr/Fe-ATP loaded with phosphate, indicating that Fe-ATP-bound phosphate has a higher re-releasing risk than Zr-ATP-bound and Zr/Fe-ATP-bound phosphate. Zr-ATP, Fe-ATP, and Zr/Fe-ATP amendment all can reduce the releasing risk of P from sediments to overlying waters. The amendment of sediment with Zr-ATP and Zr/Fe-ATP can both induce the conversion of redox-sensitive P (BD-P) to NaOH-IP and Res-P in the sediment, making the phosphorus in the sediment more stable. However, the amendment of sediment with Fe-ATP can only induce the conversion of HCl-P to NaOH-IP in the sediment and had a negligible effect on the inorganic P activity in the sediment. Zr-ATP, Fe-ATP, and Zr/Fe-ATP capping all can reduce the risk of P release from sediment into the overlying water, and Zr-ATP and Zr/Fe-ATP capping had a better reduction efficiency of internal P liberation to the overlying water than Fe-ATP capping. Zr-ATP, Fe-ATP, and Zr/Fe-ATP capping all can give rise to the reduction of pore water SRP and diffusive gradient in thin-film (DGT)-labile P in the upper sediment. This is beneficial to the control of P releasing from sediment into the overlying water by the Zr-ATP, Fe-ATP, and Zr/Fe-ATP capping. The findings of this work suggest that Zr-ATP and Zr/Fe-ATP are promising active capping or amendment materials for internal P loading management in surface water bodies.
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Affiliation(s)
- Niuniu Liu
- College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai, 201306, China
| | - Wanyan Chen
- College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai, 201306, China
| | - Jianwei Lin
- College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai, 201306, China.
| | - Yanhui Zhan
- College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai, 201306, China
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Cheng F, Nie F, Zhao C, Li W, Pan J. Efficient and stable removal of phosphate from aqueous solutions by hollow microspheres of MgO/ZrO2 composite oxide. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.128095] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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14
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Kong X, Bai R, Wang S, Wu B, Zhang R, Li H. Recovery of phosphorus from aqueous solution by magnetic TiO2*/Fe3O4 composites. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2021.139234] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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15
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Zhang Y, Tang Q, Sun Y, Yao C, Yang Z, Yang W. Improved utilization of active sites for phosphorus adsorption in FeOOH/anion exchanger nanocomposites via a glycol-solvothermal synthesis strategy. J Environ Sci (China) 2022; 111:313-323. [PMID: 34949361 DOI: 10.1016/j.jes.2021.04.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Revised: 04/09/2021] [Accepted: 04/18/2021] [Indexed: 06/14/2023]
Abstract
Metal oxide/hydroxide-based nanocomposite adsorbents with porous supporting matrices have been recognized as efficient adsorbents for phosphorus recovery. Aiming at satisfying increasingly restrictive environmental requirements involving improving metal site utilization and lowering metal leakage risk, a glycol-solvothermal confined-space synthesis strategy was proposed for the fabrication of FeOOH/anion exchanger nanocomposites (Fe/900s) with enhanced metal site utilization and reduced metal leakage risk. Compared to composites prepared using alkaline precipitation methods, Fe/900s performed comparably, with a high adsorption capacity of 19.05 mg-P/g with an initial concentration of 10 mg-P/L, a high adsorption selectivity of 8.2 mg-P/g in the presence of 500 mg-SO42-/L, and high long-term resilience (with a capacity loss of ~14% after five cycles), along with substantially lower Fe loading amount (4.11 wt.%) and Fe leakage percentage. Mechanistic investigation demonstrated that contribution of the specific FeOOH sites to phosphate adsorption increased substantially (up to 50.97% under the optimal conditions), in which Fe(III)-OH was the dominant efficient species. The side effects of an excessively long reaction time, which included quaternary ammonium decomposition, FeOOH aggregation, and Fe(III) reduction, were discussed as guidance for optimizing the synthesis strategy. The glycol-solvothermal strategy provides a facile solution to environmental problems through nanocrystal growth engineering in a confined space.
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Affiliation(s)
- Yi Zhang
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycling and Pollution Control, Nanjing Normal University, Nanjing 210046, China
| | - Qiong Tang
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycling and Pollution Control, Nanjing Normal University, Nanjing 210046, China
| | - Yifan Sun
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycling and Pollution Control, Nanjing Normal University, Nanjing 210046, China
| | - Chenxu Yao
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycling and Pollution Control, Nanjing Normal University, Nanjing 210046, China
| | - Zhen Yang
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycling and Pollution Control, Nanjing Normal University, Nanjing 210046, China.
| | - Weiben Yang
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycling and Pollution Control, Nanjing Normal University, Nanjing 210046, China.
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Phosphorus and sulphates removal from wastewater using copper smelter slag washed with acid. SN APPLIED SCIENCES 2021. [DOI: 10.1007/s42452-021-04843-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Abstract
In this study, we present the performance of acid washed copper smelter slag for the adsorption of phosphates and sulphates from wastewater. The aim of the study was to investigate the removal of phosphates and sulphates from wastewater using acid washed copper smelter slag at batch scale by exploring influences of different variables. The leachate concentrations of copper, iron, manganese and lead released from the adsorbent were 1.8, 128.2, 0.32 and 0.20 mg L−1, respectively at pH 2. The point of zero charge was at pH 6.04, Pseudo-Second Order kinetic model described the adsorption process better with an R2 value of 0.99. The experimental maximum adsorption capacities for phosphates and sulphates were 0.51 and 0.24 mg g−1 media, respectively, and 0.96 mg P g−1 media at pH 12 and 0.39 mg g−1 media for sulphates at pH 2, respectively. The process was endothermic with temperature having insignificant impact during adsorption. The maximum adsorption capacities for thermodynamic study were 0.103 ± 0.09 and 0.046 ± 0.004 mg g−1 media respectively, for PO43− P and SO42− at 60 °C. This study showed that acid washed copper smelter slag has an improved adsorption capacity for phosphate and sulphate ions but further investigations should be conducted to find ways of further improving the adsorbent performance.
Article highlights
There is increase in the adsorption capacity of acid washed copper smelter slag.
The adsorption capacity of phosphorus is high at pH 12 and for sulphate at pH 6.
The adsorption of phosphate and sulphate ions onto acid washed slag is an endothermic process.
Intraparticle diffusion was not the only rate controlling mechanisms.
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Li S, Zeng W, Ren Z, Jia Z, Wu G, Peng Y. Performance difference of hydrated phosphorophilic metal oxides in modifying diatomite and recovering phosphorus from wastewater. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126763] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Van Truong T, Kim DJ. Phosphate removal using thermally regenerated Al adsorbent from drinking water treatment sludge. ENVIRONMENTAL RESEARCH 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] [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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Wei T, Li Q, Wang H, Zhang G, Zhang T, Long Z, Xian G. Advanced phosphate and nitrogen removal in water by La-Mg composite. ENVIRONMENTAL RESEARCH 2021; 193:110529. [PMID: 33278472 DOI: 10.1016/j.envres.2020.110529] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 08/12/2020] [Accepted: 11/21/2020] [Indexed: 06/12/2023]
Abstract
A novel La-Mg composite was prepared for the removal of low concentration phosphate and ammonium nitrogen to alleviate the eutrophication problem. The composition and morphology of La-Mg composite was characterized; Its surface was composed of La, Mg, C, and O elements, with a specific surface area of 21.92 m2/g. La-Mg composite presented excellent removal of phosphate (100%) and nitrogen (96.8%), and the adsorption capacity reached 49.72 mg-P/g and 159.30 mg-N/g for separated adsorption. The composite also had a wide pH usability range (3-11 for P and 3-9 for N) and the adsorption process was almost not disturbed by coexisting ions. After adsorption, it could be regenerated by Na2CO3 and reused effectively. For actual water treatment, a very low residual P of 0.01 mg/L and N of 0.05 mg/L were achieved. Furthermore, Mechanism analysis showed that P adsorption involved ligand exchange and electrostatic attraction. The potential mechanisms of N adsorption involved electrostatic attraction and ion exchange. The results showed that the La-Mg composite is a novel and efficient adsorbent for actual water treatment to achieve ultra-low nutrients concentration.
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Affiliation(s)
- Ting Wei
- School of Environment & Natural Resources, Renmin University of China, Beijing, 100872, China.
| | - Qiangang Li
- School of Environment & Natural Resources, Renmin University of China, Beijing, 100872, China.
| | - HongJie Wang
- Institute of Ecology and Environmental Governance, Hebei University, Baoding, 071002, China.
| | - Guangming Zhang
- School of Energy & Environmental Engineering, Hebei University of Technology, Tianjin, 300130, China.
| | - Tao Zhang
- School of Environment & Natural Resources, Renmin University of China, Beijing, 100872, China.
| | - Zeqing Long
- School of Environment & Natural Resources, Renmin University of China, Beijing, 100872, China.
| | - Guang Xian
- School of Environment & Natural Resources, Renmin University of China, Beijing, 100872, China.
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20
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Facile synthesis of polyethyleneimine@Fe3O4 loaded with zirconium for enhanced phosphate adsorption: Performance and adsorption mechanism. KOREAN J CHEM ENG 2021. [DOI: 10.1007/s11814-020-0663-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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21
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Luo F, Feng X, Jiang X, Zhou A, Xie P, Wang Z, Tao T, Wan J. Lanthanum molybdate/magnetite for selective phosphate removal from wastewater: characterization, performance, and sorption mechanisms. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:4342-4351. [PMID: 32944858 DOI: 10.1007/s11356-020-10807-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 09/09/2020] [Indexed: 06/11/2023]
Abstract
Lanthanum molybdate/magnetite (M-La2(MoO4)3) with various LaCl3/Fe3O4 mass ratios was synthesized and optimized for selective phosphate removal from wastewater. M-La2(MoO4)3 (2:1) was selected on the basis of phosphate sorption capacity for further experiments and characterized by a variety of methods. The phosphate sorption kinetics, isotherms, and matrix effect were studied. The maximum sorption capacity at initial pH 7 indicates the possible applicability M-La2(MoO4)3 (2:1) in removing phosphate from the aquatic environment. Phosphate removal by M-La2(MoO4)3 (2:1) with high selectivity was achieved in the presence of other co-existing anions, while calcium and magnesium ions were found to inhibit the sorption process. The sorption isotherm study showed that Freundlich and Sips models fit better the Langmuir model, indicating that heterogeneous multilayer sorption was dominant during the phosphate sorption process. Sorption kinetic results showed that the pseudo-first-order kinetic model can describe well the phosphate sorption process by M-La2(MoO4)3 (2:1). Consecutive sorption-desorption runs showed that M-La2(MoO4)3 (2:1) could be reused for a few cycles. Simultaneous removal of phosphate and organic matter was achieved in real wastewater by using M-La2(MoO4)3 (2:1). The sorption mechanism was inner-sphere complexation.
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Affiliation(s)
- Feng Luo
- School of Environmental Science & Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Xiaonan Feng
- School of Environmental Science & Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China.
| | - Xiaoqing Jiang
- School of Environmental Science & Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
- Wuhan Planning & Design Co., LTD., Wuhan, 430014, China
| | - Aijiao Zhou
- School of Environmental Science & Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Pengchao Xie
- School of Environmental Science & Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Zongping Wang
- School of Environmental Science & Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Tao Tao
- School of Environmental Science & Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Jun Wan
- School of Environmental Engineering, Wuhan Textile University, Engineering Research Centre for Clean Production of Textile Dyeing and Printing, Ministry of Education, Wuhan, 430200, China.
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Xu Y, Liu T, Huang Y, Zhu J, Zhu R. Role of phosphate concentration in control for phosphate removal and recovery by layered double hydroxides. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:16612-16623. [PMID: 32128733 DOI: 10.1007/s11356-020-08102-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Accepted: 02/12/2020] [Indexed: 06/10/2023]
Abstract
Phosphorus removal from wastewater has become urgent because of eutrophication control. Phosphate concentration in control for phosphate removal and recovery by Mg-Fe oxide has been investigated. The results show that the adsorption capacity of phosphate by Mg-Fe oxide calcined at 450 °C was 28.3 mg/g, and it was kept at wide optimal adsorption pH ranges (4-10). The coexisting ions had influenced phosphate adsorption process and the order is CO32- > SO42- > NO3- > Cl-, with the inhibition rate of CO32- being 43%. Interestingly, phosphate concentration plays an important role in phosphate removal by Mg-Fe oxide. Under higher initial phosphate concentrations (200-800 mg/L), Sips model was well fitted. In addition, the adsorption kinetics was well described by the pseudo-second-order kinetic model before 25 min and the pseudo-first-order kinetic model after 25 min. In contrast, Langmuir model and pseudo-second-order kinetic model were fitted under lower initial phosphate concentrations (20-200 mg/L). The results of XRD, XPS, SEM, and TEM characterization show that Mg3(PO4)2 was formed by surface precipitation under 800 mg/L phosphate solution, and Mg-Fe layered structure was present via the unique memory effect under 20 mg/L phosphate solution. Mg-Fe oxide can be recovered through CO32- ion exchange, and the removal efficiency of phosphate was 56% after seven cycles.
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Affiliation(s)
- Yin Xu
- Department of Environment, College of Environment and Resources, Xiangtan University, Xiangtan, 411105, Hunan, People's Republic of China.
| | - Tingjiao Liu
- Department of Environment, College of Environment and Resources, Xiangtan University, Xiangtan, 411105, Hunan, People's Republic of China
| | - Yukun Huang
- Department of Environment, College of Environment and Resources, Xiangtan University, Xiangtan, 411105, Hunan, People's Republic of China
| | - Jiayi Zhu
- Department of Environment, College of Environment and Resources, Xiangtan University, Xiangtan, 411105, Hunan, People's Republic of China
| | - Runliang Zhu
- Department of Environment, College of Environment and Resources, Xiangtan University, Xiangtan, 411105, Hunan, People's Republic of China
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Lin J, Zhao Y, Zhan Y, Wang Y. Influence of coexisting calcium and magnesium ions on phosphate adsorption onto hydrous iron oxide. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:11303-11319. [PMID: 31965506 DOI: 10.1007/s11356-020-07676-w] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Accepted: 01/07/2020] [Indexed: 06/10/2023]
Abstract
Removal of phosphorus (P) from municipal wastewater is of vital importance to the control of eutrophication in receiving freshwater bodies. Typical cations such as Ca2+ and Mg2+ generally exist in municipal wastewater, and they may affect the sorption behavior and mechanism of iron oxide-based materials for aqueous phosphate (HxPO4x - 3, x = 0, 1, 2, or 3 depending on solution pH). To better apply iron oxide-containing materials as adsorbents to eliminate HxPO4x - 3 in municipal wastewater, a hydrous ferric oxide (HFEO) was prepared and characterized at first and then the impact of coexisting Ca2+ and Mg2+ on the uptake of HxPO4x - 3 by HFEO was studied. The results showed that, without coexisting Ca2+ and Mg2+, the kinetic data for HxPO4x - 3 sorption onto HFEO were better described by the Elovich model (R2 = 0.953) than the pseudo-second-order (R2 = 0.838) and pseudo-first-order (R2 = 0.641) models, and the isotherm data were fitted better with the Dubinin-Radushkevich (R2 = 0.966) and Freundlich (R2 = 0.953) models than with the Langmuir (R2 = 0.924) model. The ligand exchange of the Fe-bound hydroxyl group with HxPO4x - 3 and the generation of Fe-O-P bonding played a key role in the uptake of HxPO4x - 3 by HFEO in the absence of Ca2+ and Mg2+. Coexisting Ca2+ and Mg2+ greatly improved the adsorptive removal of HxPO4x - 3 by HFEO, including the adsorption capacity and initial adsorption rate. According to the Langmuir isotherm equation, the predicted maximum HxPO4x - 3 adsorption capacity for HFEO at pH 7 in the presence of 2 mmol/L Ca2+ (24.7 mg P/g) or 2 mmol/L Mg2+ (18.4 mg P/g) was much larger than that without coexisting Ca2+ and Mg2+ (10.7 mg P/g). The formation of aqueous CaHPO40 and MgHPO40 species firstly and then the adsorption of the formed CaHPO40 and MgHPO40 species on the HFEO surface to generate the HPO42--bridged ternary complexes (i.e., Fe(OPO3H)Ca+ and Fe(OPO3H)Mg+) had an important role in the improvement of HxPO4x - 3 adsorption onto HFEO by coexisting Ca2+ and Mg2+.
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Affiliation(s)
- Jianwei Lin
- College of Marine Ecology and Environment, Shanghai Ocean University, Hucheng Ring Road No. 999, Shanghai, 201306, China.
| | - Yuying Zhao
- College of Marine Ecology and Environment, Shanghai Ocean University, Hucheng Ring Road No. 999, Shanghai, 201306, China
| | - Yanhui Zhan
- College of Marine Ecology and Environment, Shanghai Ocean University, Hucheng Ring Road No. 999, Shanghai, 201306, China
| | - Yan Wang
- College of Marine Ecology and Environment, Shanghai Ocean University, Hucheng Ring Road No. 999, Shanghai, 201306, China
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Qiu H, Ni W, Zhang H, Chen K, Yu J. Fabrication and evaluation of a regenerable HFO-doped agricultural waste for enhanced adsorption affinity towards phosphate. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 703:135493. [PMID: 31759714 DOI: 10.1016/j.scitotenv.2019.135493] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 11/02/2019] [Accepted: 11/11/2019] [Indexed: 06/10/2023]
Abstract
Chemical modification of agricultural waste biomass has proved to be an economy and effective approach to capture phosphate ions, except for that under acidic conditions and highly competitive ion systems. According to this, a new nanocomposite (HFO@St+) was fabricated by incorporating nano-sized hydrous Fe(III) oxides (HFO) within aminated wheat straw in order to overcome the bottleneck. The optimal pH of phosphate uptake by HFO@St+ was greatly broadened and observed over a wide pH range between 2.0 and 7.0. The binary exchange reaction indicated that phosphate was strongly and preferably adsorbed by HFO@St+ with the separation factor K of phosphate over nitrate increasing from 0.23-1 or 0.20-0.26 to 2.5-38 or 2.5-15 for near neutral or acidic pHs, respectively. The sorption selectivity for HFO@St+ followed the order of phosphate > nitrate > chloride under experimental conditions. The presence of inorganic and organic ligands (SO4 and HA) showed no significant effect on phosphate adsorption. XPS and FT-IR analyses were performed to explore the underlying mechanism of adsorption. The exhausted material could be regenerated with NaOH-NaCl solution for at least ten cycles, indicating that HFO@St+ can be used as a sustainable biomass product with excellent adsorption affinity for phosphate removal.
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Affiliation(s)
- Hui Qiu
- 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, 219 Ningliu Road, Nanjing 210044, China..
| | - Wenxiang Ni
- 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, 219 Ningliu Road, Nanjing 210044, China
| | - Haihan Zhang
- Shaanxi Key Laboratory of Environmental Engineering, Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Kai Chen
- 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, 219 Ningliu Road, Nanjing 210044, China..
| | - Jiacheng Yu
- 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, 219 Ningliu Road, Nanjing 210044, China
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Wu B, Wan J, Zhang Y, Pan B, Lo IMC. Selective Phosphate Removal from Water and Wastewater using Sorption: Process Fundamentals and Removal Mechanisms. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:50-66. [PMID: 31804806 DOI: 10.1021/acs.est.9b05569] [Citation(s) in RCA: 212] [Impact Index Per Article: 53.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Eutrophication of water bodies is a serious and widespread environmental problem. Achieving low levels of phosphate concentration to prevent eutrophication is one of the important goals of the wastewater engineering and surface water management. Meeting the increasingly stringent standards is feasible in using a phosphate-selective sorption system. This critical review discusses the most fundamental aspects of selective phosphate removal processes and highlights gains from the latest developments of phosphate-selective sorbents. Selective sorption of phosphate over other competing anions can be achieved based on their differences in acid-base properties, geometric shapes, and metal complexing abilities. Correspondingly, interaction mechanisms between the phosphate and sorbent are categorized as hydrogen bonding, shape complementarity, and inner-sphere complexation, and their representative sorbents are organic-functionalized materials, molecularly imprinted polymers, and metal-based materials, respectively. Dominating factors affecting the phosphate sorption performance of these sorbents are critically examined, along with a discussion of some overlooked facts regarding the development of high-performance sorbents for selective phosphate removal from water and wastewater.
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Affiliation(s)
- Baile Wu
- Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Jun Wan
- 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
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Bingcai Pan
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, 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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Mazloomi S, Yousefi M, Nourmoradi H, Shams M. Evaluation of phosphate removal from aqueous solution using metal organic framework; isotherm, kinetic and thermodynamic study. JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE & ENGINEERING 2019; 17:209-218. [PMID: 31297210 PMCID: PMC6582016 DOI: 10.1007/s40201-019-00341-6] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Accepted: 01/07/2019] [Indexed: 05/12/2023]
Abstract
BACKGROUND Phosphate (PO4 3-) is the main etiological factor of eutrophication in surface waters. Metal organic frameworks (MOFs) are novel hybrid materials with amazing structural properties that make them a prominent material for adsorption. METHODS Zeolitic imidazolate framework 67 (ZIF-67), a water stable member of MOFs, with a truncated rhombic dodecahedron crystalline structure was synthesized in aqueous environment at room temperature and then characterized using XRD and SEM. PO4 3- adsorption from synthetic solutions using ZIF-67 in batch mode were evaluated and a polynomial model (R2: 0.99, R2 adj: 0.98, LOF: 0.1433) developed using response surface methodology (RSM). RESULTS The highest PO4 3- removal (99.2%) after model optimization obtained when ZIF-67 dose, pH and mixing time adjusted to 6.82, 832.4 mg/L and 39.95 min, respectively. The optimum PO4 3- concentration in which highest PO4 3- removal and lowest adsorbent utilization occurs, observed at 30 mg/L. PO4 3- removal eclipsed significantly in the presence of carbonate. The equilibrium and kinetic models showed that PO4 3- adsorbed in monolayer (qmax: 92.43 mg/g) and the sorption process controlled in the sorption stage. Adsorption was also more favorable at higher PO4 3- concentration, according to the separation factor (KR) graph. Thermodynamic parameters (minus signs of ∆G°, ∆H° of 0.179 KJ/mol and ∆S° of 44.91 KJ/mol.K) demonstrate the spontaneous, endothermic and physisorption nature of the process. CONCLUSION High adsorption capacity and adsorption rates, make ZIF-67 a promising adsorbent for PO4 3- removal from aqueous environment.
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Affiliation(s)
- Sajad Mazloomi
- Department of Environmental Health Engineering, School of Public Health, Ilam University of Medical Sciences, Ilam, Iran
- Biotechnology and Medicinal Plants Research Center, Faculty of Medicine, Ilam University of Medical Sciences, Ilam, Iran
| | - Mahmood Yousefi
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Heshmatollah Nourmoradi
- Department of Environmental Health Engineering, School of Public Health, Ilam University of Medical Sciences, Ilam, Iran
- Biotechnology and Medicinal Plants Research Center, Faculty of Medicine, Ilam University of Medical Sciences, Ilam, Iran
| | - Mahmoud Shams
- Social Determinants of Health Research Center, Mashhad University of Medical Sciences, Khorasan Razavi Province, Iran, P.O. Box: 91735-951, Mashhad, IR Iran
- Department of Environmental Health Engineering, School of Health, Mashhad University of Medical Sciences, Mashhad, Iran
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Tang Q, Shi C, Shi W, Huang X, Ye Y, Jiang W, Kang J, Liu D, Ren Y, Li D. Preferable phosphate removal by nano-La(III) hydroxides modified mesoporous rice husk biochars: Role of the host pore structure and point of zero charge. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 662:511-520. [PMID: 30699371 DOI: 10.1016/j.scitotenv.2019.01.159] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 12/27/2018] [Accepted: 01/13/2019] [Indexed: 06/09/2023]
Abstract
Immobilizing La(OH)3 nanoparticles (NPs) to porous hosts has been widely applied to inhibiting their inherent aggregation as well as the subsequent low utilization efficiency of La. In this study, a series of rice husk biochars (RHBCs) with high mesoporous rates were prepared and the effects of host pore structure and point of zero charge (pHpzc) on phosphate adsorption by La-modified RHBCs was particularly focused. Characterization results confirmed that La(OH)3 NPs were both confined in the pore channel and external surface of RHBCs. Adsorption kinetics and isotherms showed that La-modified RHBCs with higher mesoporous rates of the host showed a faster adsorption rate and La-modified RHBCs exhibited superior La utilization efficiency than many reported La-incorporated adsorbents. Phosphate could be effectively captured over a wide pH of 3-10 due to the high pHpzc of La-modified RHBCs. Moreover, the La-modified RHBCs showed satisfactory affinity towards phosphate in the presence of coexisting anions and the phosphate adsorption by La-RHBC9 was enhanced in the presence of Ca2+, while it was inhibited in the presence of Mg2+. The mesoporous structure of RHBCs strengthened the stability of La-modified RHBCs and weakened the inhibition of coexisting humic substances on phosphate adsorption through the "shielding effect".
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Affiliation(s)
- Qian Tang
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, No. 1037 Luoyu Road, Wuhan 430074, PR China
| | - Chenghao Shi
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, No. 1037 Luoyu Road, Wuhan 430074, PR China
| | - Wenmin Shi
- China Construction Third Bureau Green Industry Investment Co. Ltd, Wuhan, Hubei 430056, PR China
| | - Xueling Huang
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, No. 1037 Luoyu Road, Wuhan 430074, PR China
| | - Yuanyao Ye
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, No. 1037 Luoyu Road, Wuhan 430074, PR China; Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia
| | - Wei Jiang
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, No. 1037 Luoyu Road, Wuhan 430074, PR China.
| | - Jianxiong Kang
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, No. 1037 Luoyu Road, Wuhan 430074, PR China
| | - Dongqi Liu
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, No. 1037 Luoyu Road, Wuhan 430074, PR China
| | - Yongzheng Ren
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, No. 1037 Luoyu Road, Wuhan 430074, PR China
| | - Daosheng Li
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, No. 1037 Luoyu Road, Wuhan 430074, PR China
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Lin J, He S, Zhan Y, Zhang Z, Wu X, Yu Y, Zhao Y, Wang Y. Assessment of sediment capping with zirconium-modified bentonite to intercept phosphorus release from sediments. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:3501-3516. [PMID: 30519911 DOI: 10.1007/s11356-018-3869-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Accepted: 11/27/2018] [Indexed: 06/09/2023]
Abstract
Three different types of zirconium-modified bentonites (ZrMBs) including zirconium-modified original bentonite (ZrMOB), zirconium-modified magnesium-pretreated bentonite (ZrMMgB), and zirconium-modified calcium-pretreated bentonite (ZrMCaB) were synthesized and used as active covering materials to suppress the release of phosphorus (P) from sediments. To assess the covering efficiency of ZrMBs to inhibit P release from sediments, we examined the impact of ZrMB covering layer on P mobilization in sediments at different depths as well as the release of P through the interface between sediment and overlying water (SWI) by use of simulating P release control experiments and diffusive gradients in thin films (DGT) technology. The results showed that the amount of soluble reactive P (SRP) in the overlying water greatly decreased after covering with ZrMBs. Moreover, both pore water SRP and DGT-liable P (DGT-P) in the top sediments decreased after capping with ZrMBs. An obvious stratification of DGT-P was observed along the vertical direction after covering with ZrMBs, and static and active layers were found in the top sediment and in the lower sediment directly below the static layer, respectively. Furthermore, ZrMB covering led to the change of P species from easily released P to relatively or very stable P, making P in the top sediment more stable compared to that without ZrMB covering. Besides, an overwhelming majority of P immobilized by ZrMBs is hard to be re-released into the water column in a common environment. Overall, the above results demonstrate that sediment covering with ZrMBs could effectively prevent the transport of SRP from sediments into the overlying water through the SWI, and the control of P transport into the overlying water by ZrMB covering could be mostly due to the immobilization of pore water SRP, DGT-P, and mobile P in the top sediment by ZrMBs.
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Affiliation(s)
- Jianwei Lin
- College of Marine Ecology and Environment, Shanghai Ocean University, No. 999 Hucheng Huan Road, Pudong District, Shanghai, 201306, China.
| | - Siqi He
- College of Marine Ecology and Environment, Shanghai Ocean University, No. 999 Hucheng Huan Road, Pudong District, Shanghai, 201306, China
| | - Yanhui Zhan
- College of Marine Ecology and Environment, Shanghai Ocean University, No. 999 Hucheng Huan Road, Pudong District, Shanghai, 201306, China
| | - Zhe Zhang
- College of Marine Ecology and Environment, Shanghai Ocean University, No. 999 Hucheng Huan Road, Pudong District, Shanghai, 201306, China
| | - Xiaolong Wu
- College of Marine Ecology and Environment, Shanghai Ocean University, No. 999 Hucheng Huan Road, Pudong District, Shanghai, 201306, China
| | - Yang Yu
- College of Marine Ecology and Environment, Shanghai Ocean University, No. 999 Hucheng Huan Road, Pudong District, Shanghai, 201306, China
| | - Yuying Zhao
- College of Marine Ecology and Environment, Shanghai Ocean University, No. 999 Hucheng Huan Road, Pudong District, Shanghai, 201306, China
| | - Yan Wang
- College of Marine Ecology and Environment, Shanghai Ocean University, No. 999 Hucheng Huan Road, Pudong District, Shanghai, 201306, China
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