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Feng S, Zhang W, Che J, Wang C, Chen Y. Controllable and selective fluoride precipitation from phosphate-rich wastewater. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 951:175507. [PMID: 39147050 DOI: 10.1016/j.scitotenv.2024.175507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 08/12/2024] [Accepted: 08/12/2024] [Indexed: 08/17/2024]
Abstract
Industrial wastewater containing high levels of fluoride and phosphate poses significant environmental challenges and results in the waste of non-renewable resources. This study investigates the use of La(OH)3 as a precipitating agent to selectively remove and separate fluoride from phosphate in such wastewater. The findings indicate that fluoride removal efficiency is highly dependent on the pH level and La(OH)3 dosage. Using Response Surface Methodology, the optimal conditions for fluoride precipitation were identified as a pH range of 1.0 to 2.5, a reaction time of 60-80 min, a La/3F molar ratio of 2.0, and reaction temperature of 25 °C. Under these parameters, the fluoride removal efficiency exceeded 96.9 %, while phosphate removal remained around 7.2 %. Further Density Functional Theory calculations and characterization confirmed La(OH)3 has a strong affinity for fluoride than phosphate under acidic conditions, leading to the formation of a LaF3 precipitate without forming LaPO4, effectively separating fluoride from phosphate. These results demonstrate an efficient strategy for treating wastewater with high fluoride and phosphate content, enabling the selective precipitation and recovery of these elements for sustainable management.
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Affiliation(s)
- Shuyue Feng
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China
| | - Wenjuan Zhang
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China; School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China.
| | - Jianyong Che
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China
| | - Chengyan Wang
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China; School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Yongqiang Chen
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China; School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China.
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2
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Zhang C, Sun S, Xu S, Johnston C, Wu C. Phosphorus Removal from Dirty Farmyard Water by Activated Anaerobic-Digestion-Derived Biochar. Ind Eng Chem Res 2023; 62:19216-19224. [PMID: 38020791 PMCID: PMC10655106 DOI: 10.1021/acs.iecr.2c02668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 11/18/2022] [Accepted: 11/21/2022] [Indexed: 12/12/2022]
Abstract
The management of anaerobic digestate is important to realize the value of the waste and enhance the whole system sustainability of anaerobic digestion. In this study, the phosphorus treatment of dirty irrigation water by biochar samples derived from digestate of anaerobic digestion were investigated. The biochars were further activated by steam activation with different duration time and KOH activation with different introducing ratios; the textural properties of biochars were optimized after activation from the aspect of biochar characterization. Notably, AD-N2 demonstrates a remarkable adsorption effect of phosphorus, with an adsorption efficiency of 8.99 mg g-1. Besides the effect of biochar dosage on phosphorus removal, adsorption kinetics and thermodynamic isotherms are studied. According to the adsorption kinetics, the adsorption of phosphorus from dirty water fits the Elovich equation (R2 = 0.95). Furthermore, the thermodynamic isotherm results illustrate the process of phosphorus removal by biochar is endothermic (ΔH0 = 17.93 kJ mol-1) and spontaneous (ΔS = 96.24 J mol-1 K-1). Therefore, this work suggests a promising solution to phosphorus-related environmental challenges in industry and agriculture.
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Affiliation(s)
- Chen Zhang
- School
of Chemistry and Chemical Engineering, Queens
University Belfast, BelfastBT7 1NN, United Kingdom
| | - Shuzhuang Sun
- School
of Chemistry and Chemical Engineering, Queens
University Belfast, BelfastBT7 1NN, United Kingdom
| | - Shaojun Xu
- School
of Chemistry, Cardiff University, CardiffCF10 3AT, United Kingdom
- UK Catalysis
Hub, Research Complex at Harwell, DidcotOX11 0FA, United Kingdom
| | - Chris Johnston
- The
Agri-Food and Biosciences Institute, BelfastBT9 5PX, United Kingdom
| | - Chunfei Wu
- School
of Chemistry and Chemical Engineering, Queens
University Belfast, BelfastBT7 1NN, United Kingdom
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3
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Hu J, Song J, Han X, Wen Q, Yang W, Pan W, Jian S, Jiang S. Fabrication of Ce-La-MOFs for defluoridation in aquatic systems: A kinetics, thermodynamics and mechanisms study. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
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4
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Quantitative Analysis of Camellia oleifera Seed Saponins and Aqueous Two-Phase Extraction and Separation. Molecules 2023; 28:molecules28052132. [PMID: 36903377 PMCID: PMC10004602 DOI: 10.3390/molecules28052132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 02/08/2023] [Accepted: 02/20/2023] [Indexed: 03/03/2023] Open
Abstract
At present, the technology used for the extraction and purification of Camellia oleifera saponins generally has the problems of high cost and low purity, and the quantitative detection of Camellia oleifera saponins also has the problems of low sensitivity and easy interference from impurities. To solve these problems, this paper aimed to use liquid chromatography for the quantitative detection of Camellia oleifera saponins, and to adjust and optimize the related conditions. In our study, the average recovery of Camellia oleifera saponins obtained was 100.42%. The RSD of precision test was 0.41%. The RSD of the repeatability test was 0.22%. The detection limit of the liquid chromatography was 0.06 mg/L, and the quantification limit was 0.2 mg/L. In order to improve the yield and purity, the Camellia oleifera saponins were extracted from Camellia oleifera Abel. seed meal by methanol extraction. Then, the extracted Camellia oleifera saponins were extracted with an ammonium sulfate/propanol aqueous two-phase system. We optimized the purification process of formaldehyde extraction and aqueous two-phase extraction. Under the optimal purification process, the purity of Camellia oleifera saponins extracted by methanol was 36.15%, and the yield was 25.24%. The purity of Camellia oleifera saponins obtained by aqueous two-phase extraction was 83.72%. Thus, this study can provide a reference standard for rapid and efficient detection and analysis of Camellia oleifera saponins for industrial extraction and purification.
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Effective Removal of Phosphate from Waste Water Based on Silica Nanoparticles. J CHEM-NY 2022. [DOI: 10.1155/2022/9944126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
This study explored the potential application of silica nanoparticles (SiNPs) prepared from rice husk ash (RHA) to reuse phosphate from aqueous solution. The physicochemical analysis illustrated that the SiNPs, which were extracted from waste biomass, have a nonuniform shape with a size range of a few nanometer to hundreds of nanometers, a surface area of 15.56 m2·g−1, and an adsorption pore width of 4.06 nm. Those results carried out the possibility to utilize the SiNPs for removal of phosphate. Findings from the batch sorption experiments showed that the phosphate adsorption was controlled by experimental parameters, i.e., pH, adsorbent dosage, concentration of adsorbate, and adsorption time. The experimental results showed that the maximum phosphate adsorption capacity of SiNPs was achieved at around 9.08 mg·g−1 at adsorption conditions, i.e., pH 7, SiNPs dosage of 0.3 g, and adsorption time of 90 min. The phosphate removal based on SiNPs will offer several benefit such as an effective and low cost method, reliable to reuse as an effective slow release phosphate fertilizer.
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Ayalew AA. Comparative adsorptive performance of adsorbents developed from kaolin clay and limestone for de-fluoridation of groundwater. SOUTH AFRICAN JOURNAL OF CHEMICAL ENGINEERING 2022. [DOI: 10.1016/j.sajce.2022.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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7
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Kumar R, Sharma P, Yang W, Sillanpää M, Shang J, Bhattacharya P, Vithanage M, Maity JP. State-of-the-art of research progress on adsorptive removal of fluoride-contaminated water using biochar-based materials: Practical feasibility through reusability and column transport studies. ENVIRONMENTAL RESEARCH 2022; 214:114043. [PMID: 36029838 DOI: 10.1016/j.envres.2022.114043] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Revised: 07/15/2022] [Accepted: 08/02/2022] [Indexed: 06/15/2023]
Abstract
Fluoride (F-) is one of the essential elements found in soil and water released from geogenic sources and several anthropogenic activities. Fluoride causes fluorosis, dental and skeletal growth problems, teeth mottling, and neurological damage due to prolonged consumption, affecting millions worldwide. Adsorption is an extensively implemented technique in water and wastewater treatment for fluoride, with significant potential due to efficiency, cost-effectiveness, ease of operation, and reusability. This review highlights the current state of knowledge for fluoride adsorption using biochar-based materials and the limitations of biochar for fluoride-contaminated groundwater and industrial wastewater treatment. Biochar materials have shown significant adsorption capacities for fluoride under the influence of low pH, biochar dose, initial concentration, temperature, and co-existing ions. Modified biochar possesses various functional groups (-OH, -CC, -C-O, -CONH, -C-OH, X-OH), in which enhanced hydroxyl (-OH) groups onto the surface plays a significant role in fluoride adsorption via electrostatic attraction and ion exchange. Regeneration and reusability of biochar sorbents need to be performed to a greater extent to improve removal efficiency and reusability in field conditions. Furthermore, the present investigation identifies the limitations of biochar materials in treating fluoride-contaminated drinking groundwater and industrial effluents. The fluoride removal using biochar-based materials at an industrial scale for understanding the practical feasibility is yet to be documented. This review work recommend the feasibility of biochar-based materials in column studies for fluoride remediation in the future.
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Affiliation(s)
- Rakesh Kumar
- School of Ecology and Environment Studies, Nalanda University, Rajgir, Bihar, 803116, India
| | - Prabhakar Sharma
- School of Ecology and Environment Studies, Nalanda University, Rajgir, Bihar, 803116, India.
| | - Wen Yang
- Agronomy College, Shenyang Agricultural University, Shenyang, China
| | - Mika Sillanpää
- Department of Chemical Engineering, School of Mining, Metallurgy and Chemical Engineering, University of Johannesburg, P. O. Box 17011, Doornfontein, 2028, South Africa; Chemistry Department, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia; Department of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia; International Research Centre of Nanotechnology for Himalayan Sustainability (IRCNHS), Shoolini University, Solan, 173212, Himachal Pradesh, India
| | - Jianying Shang
- Department of Soil and Water Science, China Agricultural University, Beijing, 100083, China
| | - Prosun Bhattacharya
- Department of Sustainable Development, Environmental Sciences and Engineering, KTH Royal Institute of Technology, Teknikringen, 10B SE-100 44, Stockholm, Sweden
| | - Meththika Vithanage
- Ecosphere Resilience Research Center, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda, 10250, Sri Lanka; Sustainability Cluster, School of Engineering, University of Petroleum and Energy Studies, Dehradun, Uttarakhand, 248007, India
| | - Jyoti Prakash Maity
- Department of Chemistry, School of Applied Sciences, KIIT Deemed to Be University, Bhubaneswar, Odisha, 751024, India
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Bilal M, Rizwan K, Adeel M, Barceló D, Awad YA, Iqbal HMN. Robust strategies to eliminate endocrine disruptive estrogens in water resources. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 306:119373. [PMID: 35500715 DOI: 10.1016/j.envpol.2022.119373] [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: 01/14/2022] [Revised: 04/08/2022] [Accepted: 04/25/2022] [Indexed: 02/05/2023]
Abstract
The widespread occurrence and ubiquitous distribution of estrogens, i.e., estrone (E1), estradiol (E2), and estriol (E3) in our water matrices, is an issue of global concern. Public and regulatory authorities are concerned and placing joint efforts to eliminate estrogens and related environmentally hazardous compounds, due to their toxic influences on the environmental matrices, ecology, and human health, even at low concentrations. However, most of the available literature is focused on the occurrence of estrogens in different water environments with limited treatment options. Thus, a detailed review to fully cover the several treatment processes is needed. This review comprehensively and comparatively discusses many physical, chemical, and biological-based treatments to eliminate natural estrogens, i.e., estrone (E1), estradiol (E2), and estriol (E3) and related synthetic estrogens, e.g., 17α-ethinylestradiol (EE2) and other related hazardous compounds. The covered techniques include adsorption, nanofiltration, ultrafiltration, ultrasonication, photocatalysis of estrogenic compounds, Fenton, Fenton-like and photo-Fenton degradation of estrogenic compounds, electro-Fenton degradation of estrogenic compounds, ozonation, and biological methods for the removal of estrogenic compounds are thoroughly discussed with suitable examples. The studies revealed that treatment plants based on chemical and biological approaches are cost-friendly for removing estrogenic pollutants. Further, there is a need to properly monitor and disposal of the usage of estrogenic drugs in humans and animals. Additional studies are required to explore a robust and more advanced oxidation treatment strategy that can contribute effectively to industrial-scale applications. This review may assist future investigations, monitoring, and removing estrogenic compounds from various environmental matrices. In concluding remarks, a way forward and future perspectives focusing on bridging knowledge gaps in estrogenic compounds removal are also proposed.
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Affiliation(s)
- Muhammad Bilal
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huai'an, 223003, China
| | - Komal Rizwan
- Department of Chemistry, University of Sahiwal, Sahiwal, 57000, Pakistan
| | - Muhammad Adeel
- Faculty of Applied Engineering, iPRACS, University of Antwerp, 2020, Antwerp, Belgium
| | - Damià Barceló
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA-CSIC), Jordi Girona, 18-26, 08034, Barcelona, Spain; Catalan Institute for Water Research (ICRA-CERCA), Parc Científic i Tecnològic de la Universitat de Girona, c/Emili Grahit, 101, Edifici H(2)O, 17003, Girona, Spain; Sustainability Cluster, School of Engineering, UPES, Dehradun, India
| | - Youssef Ahmed Awad
- Structural Engineering, Faculty of Engineering and Technology, Future University in Egypt, New Cairo, 11835, Egypt
| | - Hafiz M N Iqbal
- Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey, 64849, Mexico.
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9
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Balasooriya IL, Chen J, Korale Gedara SM, Han Y, Wickramaratne MN. Applications of Nano Hydroxyapatite as Adsorbents: A Review. NANOMATERIALS 2022; 12:nano12142324. [PMID: 35889550 PMCID: PMC9319406 DOI: 10.3390/nano12142324] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 06/24/2022] [Accepted: 07/04/2022] [Indexed: 02/04/2023]
Abstract
Nano hydroxyapatite (Ca10(PO4)6(OH)2, HAp) has aroused widespread attention as a green and environmentally friendly adsorbent due to its outstanding ability in removing heavy metal ions, radio nuclides, organic pollutants and fluoride ions for wastewater treatment. The hexagonal crystal structure of HAp supports the adsorption mechanisms including ionic exchange reaction, surface complexation, the co-precipitation of new partially soluble phases and physical adsorption such as electrostatic interaction and hydrogen bonding. However, nano HAp has some drawbacks such as agglomeration and a significant pressure drop during filtration when used in powder form. Therefore, instead of using nano HAp alone, researchers have worked on modificationsand composites of nano HAp to overcome these issues and enhance the adsorption capacity. The modification of cationic doping and organic molecule grafting for nano HAp can promote the immobilization of ions and then increase adsorption capacity. Developing nano HAp composite with biopolymers such as gelatin, chitosan and chitin has proven to obtain a synergetic effect for improving the adsorption capacity of composites, in which nano HAp fixed and dispersed in polymers can playmuch more of a role for adsorption. This review summarizes the adsorption properties and adsorbent applications of nano HAp as well as the methods to enhance the adsorption capacity of nano HAp.
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Affiliation(s)
- Iresha Lakmali Balasooriya
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan University of Technology, Wuhan 430070, China; (I.L.B.); (J.C.); (S.M.K.G.)
| | - Jia Chen
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan University of Technology, Wuhan 430070, China; (I.L.B.); (J.C.); (S.M.K.G.)
| | - Sriyani Menike Korale Gedara
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan University of Technology, Wuhan 430070, China; (I.L.B.); (J.C.); (S.M.K.G.)
| | - Yingchao Han
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan University of Technology, Wuhan 430070, China; (I.L.B.); (J.C.); (S.M.K.G.)
- Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory, Xianhu Hydrogen Valley, Foshan 528200, China
- Correspondence:
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10
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Samanta P, Schönettin HM, Horn H, Saravia F. MF–NF Treatment Train for Pig Manure: Nutrient Recovery and Reuse of Product Water. MEMBRANES 2022; 12:membranes12020165. [PMID: 35207086 PMCID: PMC8875562 DOI: 10.3390/membranes12020165] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 01/24/2022] [Accepted: 01/25/2022] [Indexed: 11/16/2022]
Abstract
The livestock industry negatively impacts the environment by producing high organic and mineral loaded manure and wastewater. On the contrary, manure is also considered as the major focal point of resource recovery. The microfiltration (MF) process in manure treatment is well known for being the least complex and highly energy efficient. However, the major fraction of the dissolve nutrients easily bypasses the MF membranes. In this research work, we reported the efficiency of using MF–nanofiltration (NF) treatment train in a dead-end filtration system for the treatment of raw manure. The objectives were to produce nutrient rich separate streams in reduced volumes and a particle and pathogen-free product water. MF removed TSS above 98% and the COD and phosphorus (P) retention were noticed above 60 and 80%, respectively, within a reduced MF concentrate volume, which accounted for 40% of the initial feed volume. The NF of MF permeate by NF270 showed most promising results by concentrating overall 50 and 70% of the total nitrogen (TN) and potassium (K) within a reduced NF concentrate volume, which accounted for 30% of the initial MF feed volume. Finally, the MF–NF treatment train of raw pig manure could produce a particle-free product water that can be reused in farms to wash barns, to irrigate nearby cultures, or can be applied to specific fields based on the demand.
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Affiliation(s)
- Prantik Samanta
- DVGW-Research Center, Water Chemistry and Water Technology, Engler-Bunte-Ring 9a, 76131 Karlsruhe, Germany; (H.H.); (F.S.)
- Engler-Bunte-Institut, Water Chemistry and Water Technology, Karlsruhe Institute of Technology, Engler-Bunte-Ring 9a, 76131 Karlsruhe, Germany;
- Correspondence:
| | - Hannah Marie Schönettin
- Engler-Bunte-Institut, Water Chemistry and Water Technology, Karlsruhe Institute of Technology, Engler-Bunte-Ring 9a, 76131 Karlsruhe, Germany;
| | - Harald Horn
- DVGW-Research Center, Water Chemistry and Water Technology, Engler-Bunte-Ring 9a, 76131 Karlsruhe, Germany; (H.H.); (F.S.)
- Engler-Bunte-Institut, Water Chemistry and Water Technology, Karlsruhe Institute of Technology, Engler-Bunte-Ring 9a, 76131 Karlsruhe, Germany;
| | - Florencia Saravia
- DVGW-Research Center, Water Chemistry and Water Technology, Engler-Bunte-Ring 9a, 76131 Karlsruhe, Germany; (H.H.); (F.S.)
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11
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Aragaw TA. Recycling electro-coagulated sludge from textile wastewater treatment plants as an adsorbent for the adsorptions of fluoride in an aqueous solution. Heliyon 2021; 7:e07281. [PMID: 34189317 PMCID: PMC8220191 DOI: 10.1016/j.heliyon.2021.e07281] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 04/09/2021] [Accepted: 06/08/2021] [Indexed: 11/30/2022] Open
Abstract
This research investigated the high content of iron-based materials from recycled electro-coagulated (EC) sludge for the adsorptive removal of fluoride, and the properties of the material were characterized. The thermal activation of EC sludge in which the unwanted impurity was removed by beneficiation and thermally activated at 500 °C, and was used for fluoride removal. Basic operating parameters (mixing time, adsorbent dosage, adsorbate concentration, solution pH, and temperature) were examined to evaluate the optimum de-fluoridation capacity (DC). The functional groups, the crystalline structure, and surface morphology of thermally treated and raw EC sludge were analyzed using FTIR, XRD, and SEM, respectively, and demonstrates that thermally activated EC sludge contains significant content of magnetite and hematite. The optimum DC was recorded as 5.12 mg of F−/gm with experimental conditions: mixing time = 20 min, adsorbent dosage = 0.3 gm/100 ml, initial fluoride concentration = 1 mg/L, and pH = 5 at the temperature of 353 K. The Langmuir isotherm model was fitted, and the capacity is calculated as 6.43 mg/g. The adsorption process follows the Pseudo-Second-order kinetic models. It can be concluded that the prepared adsorbents have excellent fluoride removal capacity, and EC sludge can be used as an alternative adsorbent for de-fluoridation. Iron-based oxides and hydroxides from the EC sludge were recovered and prepared for fluoride ion adsorption. EC sludge as an iron-based adsorbent was synthesized by thermal activation at 500 °C. Iron oxide adsorbents could efficiently remove fluoride ions from synthetically prepared water solutions. The adsorption of fluoride followed a Langmuir isotherm pseudo-Second-order kinetic model. The prepared adsorbents were regenerated in an aqueous solution and the reusability efficiency was up to the 4th cycle.
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Affiliation(s)
- Tadele Assefa Aragaw
- Faculty of Chemical and Food Engineering, Bahir Dar Institute of Technology, Bahir Dar University, Bahir Dar, Ethiopia
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12
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Alhujaily A, Mao Y, Zhang J, Ifthikar J, Zhang X, Ma F. Facile fabrication of Mg-Fe-biochar adsorbent derived from spent mushroom waste for phosphate removal. J Taiwan Inst Chem Eng 2020. [DOI: 10.1016/j.jtice.2020.11.034] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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13
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Dhangar K, Kumar M. Tricks and tracks in removal of emerging contaminants from the wastewater through hybrid treatment systems: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 738:140320. [PMID: 32806367 DOI: 10.1016/j.scitotenv.2020.140320] [Citation(s) in RCA: 76] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Revised: 06/15/2020] [Accepted: 06/16/2020] [Indexed: 06/11/2023]
Abstract
In recent years, many biological and physicochemical treatment technologies have been investigated for the removal of the emerging contaminants (ECs) from the wastewater matrix. However, due to the deficiency of these treatments to completely degrade the ECs in wastewater, hybrid systems were explored using the distinguishing removal potential of the different treatment processes. This review gives an insight on such hybrid systems combining several physical, chemical and biological treatments for the fast and eco-efficient removal of ECs from wastewater. Most of the hybrid systems have applied biological treatments first and then physical or chemical treatments. The hybrid system of membrane bioreactor (MBR) followed by membrane filtrations (RO/NF) effectively removed a suite of ECs such as pharmaceuticals, beta blockers, pesticides and EDCs. Some of the hybrid systems of constructed wetlands and waste stabilization ponds showed promising potential for the biosorptive removal of pharmaceuticals and some beta blockers. The hybrid systems combining activated sludge process and physical processes such as ultrafiltration (UF), reverse osmosis (RO) and gamma radiations are considered as the cost effective technologies and had better removal of trace organic pollutants. The hybrid system of MBR coupled with UV oxidation, activated carbon and ultrasound, and ozonation followed by ultrasounds, completely degraded some ECs and many pharmaceuticals. The review also synthesizes the trend followed by the hybrid system processes for the removal of various categories of ECs. The future research directions for the ECs removal utilizing hybrid nanocomposites and green sustainable technology have been suggested.
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Affiliation(s)
- Kiran Dhangar
- Discipline of Earth Sciences, IIT Gandhinagar, 382355, India.
| | - Manish Kumar
- Discipline of Earth Sciences, IIT Gandhinagar, 382355, India.
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14
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Chaudhary M, Maiti A. Fe–Al–Mn@chitosan based metal oxides blended cellulose acetate mixed matrix membrane for fluoride decontamination from water: Removal mechanisms and antibacterial behavior. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2020.118372] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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15
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Pang T, Aye Chan TS, Jande YAC, Shen J. Removal of fluoride from water using activated carbon fibres modified with zirconium by a drop-coating method. CHEMOSPHERE 2020; 255:126950. [PMID: 32380266 DOI: 10.1016/j.chemosphere.2020.126950] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 04/27/2020] [Accepted: 04/29/2020] [Indexed: 06/11/2023]
Abstract
Metal-modified carbon materials have been widely used for fluoride removal, but the traditional impregnation by soaking method suffers from low loading of metals and substantial use of chemicals. This study proposed a new approach to prepare zirconium modified activated carbon fibres (Zr-ACF) by a drop-coating method. Using the same amount of chemicals, the drop-coating method yielded a 5.5 times higher fluoride adsorption capacity than the soaking method due to more effective loading of Zr(IV) onto ACF. The effects of various preparation conditions, including the addition of a complexing agent (oxalic acid) and Zr/ACF mass ratio (0.2-1), were investigated. Zr-ACF prepared by drop-coating was characterised by SEM and BET, and the functional groups involved in the anchoring of Zr(IV) on ACF and the adsorption of fluoride onto Zr-ACF were identified by FTIR and XPS. Adsorption experiments at pH between 3 and 11 revealed that ion exchange and electrostatic attraction were the main adsorption mechanisms at different pH levels. Co-existing anions such as CO32-, HCO3- and Cl- had an insignificant negative impact (<5%) on fluoride adsorption capacity while SO42- decreased fluoride adsorption capacity by 11.5%. The adsorption kinetics followed the pseudo-second-order model. The adsorption isotherms followed the Langmuir isotherm model with a maximum fluoride adsorption capacity of 28.50 mg/L at 25 °C, which was higher than other carbon-based materials in the literature. The remarkable improvement of adsorption capacity and reduced chemical consumption demonstrate that Zr-ACF prepared by drop-coating is a promising adsorbent for fluoride removal.
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Affiliation(s)
- Tianting Pang
- Department of Chemical Engineering, University of Bath, Bath, BA2 7AY, UK
| | - Thet Su Aye Chan
- Department of Chemical Engineering, University of Bath, Bath, BA2 7AY, UK
| | - Yusufu Abeid Chande Jande
- Water Infrastructure and Sustainable Energy Futures (WISE-Futures) Center, Nelson Mandela African Institution of Science and Technology, Arusha, Tanzania; Department of Materials and Energy Science and Engineering, Nelson Mandela African Institution of Science and Technology, Arusha, Tanzania
| | - Junjie Shen
- Department of Chemical Engineering, University of Bath, Bath, BA2 7AY, UK; Centre for Advanced Separations Engineering (CASE), University of Bath, Bath, BA2 7AY, UK; Water Innovation and Research Centre (WIRC), University of Bath, Bath, BA2 7AY, UK.
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16
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Membrane-Based Processes Used in Municipal Wastewater Treatment for Water Reuse: State-Of-The-Art and Performance Analysis. MEMBRANES 2020; 10:membranes10060131. [PMID: 32630495 PMCID: PMC7344726 DOI: 10.3390/membranes10060131] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 06/19/2020] [Accepted: 06/21/2020] [Indexed: 12/11/2022]
Abstract
Wastewater reuse as a sustainable, reliable and energy recovery concept is a promising approach to alleviate worldwide water scarcity. However, the water reuse market needs to be developed with long-term efforts because only less than 4% of the total wastewater worldwide has been treated for water reuse at present. In addition, the reclaimed water should fulfill the criteria of health safety, appearance, environmental acceptance and economic feasibility based on their local water reuse guidelines. Moreover, municipal wastewater as an alternative water resource for non-potable or potable reuse, has been widely treated by various membrane-based treatment processes for reuse applications. By collecting lab-scale and pilot-scale reuse cases as much as possible, this review aims to provide a comprehensive summary of the membrane-based treatment processes, mainly focused on the hydraulic filtration performance, contaminants removal capacity, reuse purpose, fouling resistance potential, resource recovery and energy consumption. The advances and limitations of different membrane-based processes alone or coupled with other possible processes such as disinfection processes and advanced oxidation processes, are also highlighted. Challenges still facing membrane-based technologies for water reuse applications, including institutional barriers, financial allocation and public perception, are stated as areas in need of further research and development.
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17
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Crossley OP, Thorpe RB, Peus D, Lee J. Phosphorus recovery from process waste water made by the hydrothermal carbonisation of spent coffee grounds. BIORESOURCE TECHNOLOGY 2020; 301:122664. [PMID: 31931334 DOI: 10.1016/j.biortech.2019.122664] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 12/18/2019] [Accepted: 12/20/2019] [Indexed: 06/10/2023]
Abstract
This study investigates the recovery of phosphorus from the process water obtained through hydrothermal carbonisation (HTC) of a 'wet' biomass waste, namely spent coffee grounds. HTC was shown to liberate more than 82% of the total phosphorus in the grounds in the form of dissolved ortho-phosphate. Nanofiltration was used to concentrate the inorganic nutrients of the HTC process water, achieving a mass concentration factor of 3.9 times. The natural stoichiometry of phosphorus, magnesium and ammoniacal nitrogen in the nanofiltration retentate was favourable for struvite precipitation. 92.8% of aqueous phosphorus was recovered as struvite through simple pH adjustment, yielding a total phosphorus recovery of 75% from the feedstock spent coffee grounds.
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Affiliation(s)
- Oliver P Crossley
- Department of Chemical and Process Engineering, University of Surrey, Guildford, Surrey GU2 7XH, United Kingdom
| | - Rex B Thorpe
- Department of Chemical and Process Engineering, University of Surrey, Guildford, Surrey GU2 7XH, United Kingdom
| | - Dominik Peus
- Antaco UK Ltd, Lantern House, Walnut Tree Close, Guildford, Surrey GU1 4SW, United Kingdom
| | - Judy Lee
- Department of Chemical and Process Engineering, University of Surrey, Guildford, Surrey GU2 7XH, United Kingdom.
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18
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Complementary membrane-based processes for recovery and preconcentration of phosphate from industrial wastewater. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.116123] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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Pap S, Kirk C, Bremner B, Turk Sekulic M, Gibb SW, Maletic S, Taggart MA. Synthesis optimisation and characterisation of chitosan-calcite adsorbent from fishery-food waste for phosphorus removal. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:9790-9802. [PMID: 31927731 PMCID: PMC7089908 DOI: 10.1007/s11356-019-07570-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Accepted: 12/29/2019] [Indexed: 05/06/2023]
Abstract
Here, Box-Behnken design (BBD) approaches were utilised to optimise synthesis methodology for the chitosan-calcite rich adsorbent (CCM) made from fishery-food waste material (crab carapace), using low-temperature activation and potassium hydroxide (KOH). The effect of activation temperature, activation time and impregnation ratio was studied. The final adsorbent material was evaluated for its phosphorus (P) removal efficiency from liquid phase. Results showed that impregnation ratio was the most significant individual factor as this acted to increase surface deacetylation of the chitin (to chitosan) and increased the number of amine groups (-NH2) in the chitosan chain. P removal efficiency approached 75.89% (at initial P concentration of 20 mg/L) under optimised experimental conditions, i.e. where the impregnation ratio for KOH:carapace (g/g) was 1:1, the activation temperature was 105 °C and the activation time was 150 min. Predicted responses were in good agreement with the experimental data. Additionally, the pristine and CCM material were further analysed using scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM/EDX), Brunauer-Emmett-Teller technique (BET), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and thermal gravimetric analysis (TGA). Characterisation showed enhancements in surface chemistry (introducing positively charged amine groups), textural properties and thermal stability of the CCM.
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Affiliation(s)
- Sabolc Pap
- Environmental Research Institute, University of the Highlands and Islands, Thurso, Caithness, Scotland, KW14 7JD, UK.
- Faculty of Technical Sciences, Department of Environmental Engineering and Occupational Safety and Health, University of Novi Sad, Novi Sad, Serbia.
| | - Caroline Kirk
- School of Chemistry, University of Edinburgh, David Brewster Rd, Edinburgh, EH9 3FJ, UK
| | - Barbara Bremner
- Environmental Research Institute, University of the Highlands and Islands, Thurso, Caithness, Scotland, KW14 7JD, UK
| | - Maja Turk Sekulic
- Faculty of Technical Sciences, Department of Environmental Engineering and Occupational Safety and Health, University of Novi Sad, Novi Sad, Serbia
| | - Stuart W Gibb
- Environmental Research Institute, University of the Highlands and Islands, Thurso, Caithness, Scotland, KW14 7JD, UK
| | - Snezana Maletic
- Faculty of Science, Department of Chemistry, Biochemistry and Environmental Protection, University of Novi Sad, Trg Dositeja Obradovića 3, Novi Sad, Serbia
| | - Mark A Taggart
- Environmental Research Institute, University of the Highlands and Islands, Thurso, Caithness, Scotland, KW14 7JD, UK
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20
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Zero-Liquid Discharge Treatment of Wastewater from a Fertilizer Factory. SUSTAINABILITY 2020. [DOI: 10.3390/su12010397] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This article describes the improvement of wastewater treatment in a fertilizer plant located in Central Italy (municipality of Vasto). In this facility, water is used for the removal of dust and fluorinated gases from the air. The resulting wastewater contains fluorides and phosphates in hazardous forms. Its treatment ordinarily does not result in a Zero-Liquid Discharge (ZLD) process. To achieve this purpose, several reagents were tested, focusing on the correlation linking pH, type of reagent and the effect on the separation of fluorides and phosphates from the wastewater. It was eventually found, and explained with a model, that hydrated lime at pH = 12 was so effective as a precipitating agent that phosphate and fluoride separation reached a value of 99.9%, thus allowing for reuse of the water in the plant process. Furthermore, phosphates and fluorides precipitated in a non-hazardous form, so that the material could also be recycled. In synthesis, wastewater treatment of the fertilizer plant was upgraded so that it became a ZLD process coupled with the recovery and recycling of fluorides and phosphates.
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21
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Nehra S, Raghav S, Kumar D. Rod–shaped Ca–Zn@Chitin composite for fluoride removal studies by adsorption and statistical experiments. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.enmm.2019.100264] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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22
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Pandi K, Viswanathan N, Meenakshi S. Hydrothermal synthesis of magnetic iron oxide encrusted hydrocalumite-chitosan composite for defluoridation studies. Int J Biol Macromol 2019; 132:600-605. [DOI: 10.1016/j.ijbiomac.2019.03.115] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 02/14/2019] [Accepted: 03/18/2019] [Indexed: 11/30/2022]
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23
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Biopolymer scaffold of pectin and alginate for the application of health hazardous fluoride removal studies by equilibrium adsorption, kinetics and thermodynamics. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.03.155] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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24
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Optimum recovery of phosphate from simulated wastewater by unseeded fluidized-bed crystallization process. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.11.087] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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25
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Preparation and characterization of novel magnetic Fe3O4/chitosan/Al(OH)3 beads and its adsorption for fluoride. Int J Biol Macromol 2018; 114:256-262. [DOI: 10.1016/j.ijbiomac.2018.03.094] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 03/08/2018] [Accepted: 03/19/2018] [Indexed: 11/22/2022]
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26
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Hu H, Yang L, Lin Z, Zhao Y, Jiang X, Hou L. A low-cost and environment friendly chitosan/aluminum hydroxide bead adsorbent for fluoride removal from aqueous solutions. IRANIAN POLYMER JOURNAL 2018. [DOI: 10.1007/s13726-018-0605-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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27
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Nagaraj A, Munusamy MA, Ahmed M, Suresh Kumar S, Rajan M. Hydrothermal synthesis of a mineral-substituted hydroxyapatite nanocomposite material for fluoride removal from drinking water. NEW J CHEM 2018. [DOI: 10.1039/c8nj02401d] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mineral substituted hydroxyapatite (mHAp) nanocomposite was synthesized and it shows high fluoride adsorption capacity.
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Affiliation(s)
- Ammavasi Nagaraj
- Biomaterials in Medicinal Chemistry Laboratory
- Department of Natural Products Chemistry
- School of Chemistry
- Madurai Kamaraj University
- Madurai-625021
| | - Murugan A. Munusamy
- Department of Botany and Microbiology
- College of Science
- King Saud University
- Riyadh 11451
- Saudi Arabia
| | - Mukhtar Ahmed
- Department of Zoology
- College of Science
- King Saud University
- Riyadh 11451
- Saudi Arabia
| | - S. Suresh Kumar
- Department of Medical Microbiology and Parasitology
- Universiti Putra
- Malaysia
| | - Mariappan Rajan
- Biomaterials in Medicinal Chemistry Laboratory
- Department of Natural Products Chemistry
- School of Chemistry
- Madurai Kamaraj University
- Madurai-625021
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28
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Kang J, Sun W, Hu Y, Gao Z, Liu R, Zhang Q, Liu H, Meng X. The utilization of waste by-products for removing silicate from mineral processing wastewater via chemical precipitation. WATER RESEARCH 2017; 125:318-324. [PMID: 28869882 DOI: 10.1016/j.watres.2017.08.047] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Revised: 08/11/2017] [Accepted: 08/20/2017] [Indexed: 06/07/2023]
Abstract
This study investigates an environmentally friendly technology that utilizes waste by-products (waste acid and waste alkali liquids) to treat mineral processing wastewater. Chemical precipitation is used to remove silicate from scheelite (CaWO4) cleaning flotation wastewater and the waste by-products are used as a substitute for calcium chloride (CaCl2). A series of laboratory experiments is conducted to explain the removal of silicate and the characterization and formation mechanism of calcium silicate. The results show that silicate removal reaches 90% when the Ca:Si molar ratio exceeds 1.0. The X-ray diffraction (XRD) results confirm the characterization and formation of calcium silicate. The pH is the key factor for silicate removal, and the formation of polysilicic acid with a reduction of pH can effectively improve the silicate removal and reduce the usage of calcium. The economic analysis shows that the treatment costs with waste acid (0.63 $/m3) and waste alkali (1.54 $/m3) are lower than that of calcium chloride (2.38 $/m3). The efficient removal of silicate is confirmed by industrial testing at a plant. The results show that silicate removal reaches 85% in the recycled water from tailings dam.
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Affiliation(s)
- Jianhua Kang
- School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, China
| | - Wei Sun
- School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, China.
| | - Yuehua Hu
- School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, China.
| | - Zhiyong Gao
- School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, China
| | - Runqing Liu
- School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, China
| | - Qingpeng Zhang
- School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, China
| | - Hang Liu
- School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, China
| | - Xiangsong Meng
- School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, China
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29
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Remediation of fluoride from drinking water using magnetic iron oxide coated hydrotalcite/chitosan composite. Int J Biol Macromol 2017; 104:1569-1577. [DOI: 10.1016/j.ijbiomac.2017.02.037] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Revised: 01/26/2017] [Accepted: 02/09/2017] [Indexed: 11/21/2022]
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30
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Zhao W, Chen Y, Zhang W. Rapid and convenient removal of fluoride by magnetic magnesium-aluminum-lanthanum composite: Synthesis, performance and mechanism. ASIA-PAC J CHEM ENG 2017. [DOI: 10.1002/apj.2106] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Wei Zhao
- College of Chemistry and Chemical Engineering; Qinghai Normal University; Xining Qinghai 810008 China
| | - Yuantao Chen
- College of Chemistry and Chemical Engineering; Qinghai Normal University; Xining Qinghai 810008 China
| | - Wei Zhang
- College of Chemistry and Chemical Engineering; Qinghai Normal University; Xining Qinghai 810008 China
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31
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Shih YJ, Abarca RRM, de Luna MDG, Huang YH, Lu MC. Recovery of phosphorus from synthetic wastewaters by struvite crystallization in a fluidized-bed reactor: Effects of pH, phosphate concentration and coexisting ions. CHEMOSPHERE 2017; 173:466-473. [PMID: 28135681 DOI: 10.1016/j.chemosphere.2017.01.088] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Revised: 11/11/2016] [Accepted: 01/17/2017] [Indexed: 06/06/2023]
Abstract
The crystallization of struvite in fluidized-bed crystallizer (FBC) was performed to treat synthetic wastewaters that contain phosphorous. Under optimal conditions (pH 9.5, molar ratio Mg/N/P = 1.3/4/1, struvite seed dose (53-297 μm) = 30 g L-1, total flow rate = 12 ml min-1, reflux = 120 ml min-1), the removal of phosphate (PR) and the crystallization ratio (CR) were 95.8% and 93.5%, respectively. Based on a thermodynamic prediction, the supersaturation, which was obtained from the difference between the theoretical solubility and phosphate concentration, predominated the crystallization efficiency and the properties of the struvite pellets, such as their morphology, particle size and apparent density. Coexisting ions NO3- (80, 160 ppm), CH2COOH- (260, 520 ppm), F- (650, 1300 ppm) and SO42- (650, 1300 ppm), were utilized to prepare P-containing wastewaters. Of these ions, SO42- (1300 ppm) remarkably reduced the capability of FBC to remove phosphate from solution. In the presence of NO3- and CH3COO- (for synthesizing TFT-LCD wastewater), and F- and SO42- (for synthesizing semiconductor wastewater), CR% was lower than in pure water, although the ultimate PR% did not differ significantly.
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Affiliation(s)
- Yu-Jen Shih
- Department of Chemical Engineering, National Cheng Kung University, No. 1, University Road, 70101 Tainan City, Taiwan
| | - Ralf Ruffel M Abarca
- Department of Chemical Engineering and Technology, Mindanao State University-Iligan Institute of Technology, Tibanga, 9200 Iligan City, Philippines; Department of Chemical Engineering, University of the Philippines, 1101, Diliman, Quezon City, Philippines
| | - Mark Daniel G de Luna
- Department of Chemical Engineering, University of the Philippines, 1101, Diliman, Quezon City, Philippines
| | - Yao-Hui Huang
- Department of Chemical Engineering, National Cheng Kung University, No. 1, University Road, 70101 Tainan City, Taiwan
| | - Ming-Chun Lu
- Department of Environmental Resources Management, Chia-Nan University of Pharmacy and Science, No.60, Sec. 1, Erren Rd., Rende Dist., 71710 Tainan, Taiwan.
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32
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Sun W, Ma G, Sun Y, Liu Y, Song N, Xu Y, Zheng H. Effective treatment of high phosphorus pharmaceutical wastewater by chemical precipitation. CAN J CHEM ENG 2017. [DOI: 10.1002/cjce.22799] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Wenquan Sun
- College of Urban Construction; Nanjing Tech University; Nanjing, 211800 China
- Jiangsu Key Laboratory of Industrial Water-Conservation & Emission Reduction, College of Environment; Nanjing Tech University; Nanjing, 211800 China
| | - Genchao Ma
- College of Urban Construction; Nanjing Tech University; Nanjing, 211800 China
| | - Yongjun Sun
- College of Urban Construction; Nanjing Tech University; Nanjing, 211800 China
- Jiangsu Key Laboratory of Industrial Water-Conservation & Emission Reduction, College of Environment; Nanjing Tech University; Nanjing, 211800 China
| | - Yang Liu
- College of Chemistry and Molecular Engineering; Nanjing Tech University; Nanjing, 211800 China
| | - Ninghui Song
- Nanjing Institute of Environmental Sciences; Ministry of Environmental Protection; Nanjing 210042 China
| | - Yanhua Xu
- Jiangsu Key Laboratory of Industrial Water-Conservation & Emission Reduction, College of Environment; Nanjing Tech University; Nanjing, 211800 China
| | - Huaili Zheng
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, State Ministry of Education; Chongqing University; Chongqing, 400045 China
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33
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Wu P, Wu J, Xia L, Liu Y, Xu L, Song S. Adsorption of fluoride at the interface of water with calcined magnesium–ferri–lanthanum hydrotalcite-like compound. RSC Adv 2017. [DOI: 10.1039/c7ra04382a] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A new calcined Mg/Fe/La hydrotalcite-like compound was prepared and showed a good performance for fluoride adsorption. The “memory effect” of the adsorbent and lanthanum played a great role for fluoride adsorption.
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Affiliation(s)
- Peng Wu
- School of Resources and Environmental Engineering
- Wuhan University of Technology
- Wuhan
- China
| | - Jishan Wu
- School of Resources and Environmental Engineering
- Wuhan University of Technology
- Wuhan
- China
| | - Ling Xia
- Hubei Provincial Collaborative Innovation Center for High Efficient Utilization of Vanadium Resources
- Wuhan
- China
| | - Yao Liu
- Department of Pharmacy
- The First People's Hospital of Xiushui County
- Jiujiang
- China
| | - Linya Xu
- School of Resources and Environmental Engineering
- Wuhan University of Technology
- Wuhan
- China
| | - Shaoxian Song
- School of Resources and Environmental Engineering
- Wuhan University of Technology
- Wuhan
- China
- Hubei Key Laboratory of Mineral Resources Processing and Environment
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34
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Defluoridation of water by Tea - bag model using La 3+ modified synthetic resin@chitosan biocomposite. Int J Biol Macromol 2016; 91:1002-9. [DOI: 10.1016/j.ijbiomac.2016.05.112] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Revised: 05/15/2016] [Accepted: 05/30/2016] [Indexed: 11/19/2022]
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35
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Mugesh S, Kumar TP, Murugan M. An unprecedented bacterial cellulosic material for defluoridation of water. RSC Adv 2016. [DOI: 10.1039/c6ra22324a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Defluoridation of water using bacterial cellulosic membrane.
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Affiliation(s)
- Subramanian Mugesh
- Department of Microbial Technology
- School of Biological Sciences
- Madurai Kamaraj University
- Madurai-625021
- India
| | - Tripathi Praveesh Kumar
- Department of Microbial Technology
- School of Biological Sciences
- Madurai Kamaraj University
- Madurai-625021
- India
| | - Marudhamuthu Murugan
- Department of Microbial Technology
- School of Biological Sciences
- Madurai Kamaraj University
- Madurai-625021
- India
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36
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Ye Y, Hu Y, Hussain Z, Li X, Li D, Kang J. Simultaneous adsorptive removal of fluoride and phosphate by magnesia–pullulan composite from aqueous solution. RSC Adv 2016. [DOI: 10.1039/c6ra07175a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022] Open
Abstract
The presence of fluoride and phosphate could affect the adsorption rate of another one while simultaneous adsorption on MgOP.
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Affiliation(s)
- Yuanyao Ye
- School of Environmental Science and Engineering
- Huazhong University of Science and Technology
- Wuhan
- PR China
| | - Ying Hu
- School of Environmental Science and Engineering
- Huazhong University of Science and Technology
- Wuhan
- PR China
| | - Zakir Hussain
- School of Environmental Science and Engineering
- Huazhong University of Science and Technology
- Wuhan
- PR China
| | - Xi Li
- School of Environmental Science and Engineering
- Huazhong University of Science and Technology
- Wuhan
- PR China
| | - Daosheng Li
- School of Environmental Science and Engineering
- Huazhong University of Science and Technology
- Wuhan
- PR China
| | - Jianxiong Kang
- School of Environmental Science and Engineering
- Huazhong University of Science and Technology
- Wuhan
- PR China
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37
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Xie R, Chen Y, Cheng T, Lai Y, Jiang W, Yang Z. Study on an effective industrial waste-based adsorbent for the adsorptive removal of phosphorus from wastewater: equilibrium and kinetics studies. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2016; 73:1891-1900. [PMID: 27120644 DOI: 10.2166/wst.2016.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In this work, an effective adsorbent for removing phosphate from aqueous solution was developed from modifying industrial waste--lithium silica fume (LSF). The characterization of LSF before and after modification was investigated using an N2 adsorption-desorption technique (Brunauer-Emmett-Teller, BET), scanning electron microscopy (SEM) and X-ray diffraction (XRD). Studies were conducted to investigate the effect of adsorbent dose, initial solution pH, contact time, phosphate concentration, and temperature on phosphate removal using this novel adsorbent. The specific surface area for modified LSF (LLSF) is 24.4024 m(2)/g, improved 69.8% compared with unmodified LSF. XRD result suggests that the lanthanum phosphate complex was formed on the surface of LLSF. The maximum phosphate adsorption capacity was 24.096 mg P/g for LLSF, and phosphate removal was favored in the pH range of 3-8. The kinetic data fitted pseudo-second-order kinetic equation, intra-particle diffusion was not the only rate controlling step. The adsorption isotherm results illustrated that the Langmuir model provided the best fit for the equilibrium data. The change in free energy (△G(0)), enthalpy (△H(0)) and entropy (△S(0)) revealed that the adsorption of phosphate on LLSF was spontaneous and endothermic. It was concluded that by modifying with lanthanum, LSF can be turned to be a highly efficient adsorbent in phosphate removal.
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Affiliation(s)
- Ruzhen Xie
- College of Architecture and Environment, Sichuan University, Chengdu, Sichuan 610065, China E-mail:
| | - Yao Chen
- College of Architecture and Environment, Sichuan University, Chengdu, Sichuan 610065, China E-mail:
| | - Ting Cheng
- College of Architecture and Environment, Sichuan University, Chengdu, Sichuan 610065, China E-mail: ; College of Environmental and Safety Engineering, Taiyuan Institute of Technology, Taiyuan, Shanxi 030008, China
| | - Yuguo Lai
- College of Architecture and Environment, Sichuan University, Chengdu, Sichuan 610065, China E-mail:
| | - Wenju Jiang
- College of Architecture and Environment, Sichuan University, Chengdu, Sichuan 610065, China E-mail:
| | - Zhishan Yang
- College of Architecture and Environment, Sichuan University, Chengdu, Sichuan 610065, China E-mail:
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Xu C, Li J, He F, Cui Y, Huang C, Jin H, Hou S. Al2O3–Fe3O4–expanded graphite nano-sandwich structure for fluoride removal from aqueous solution. RSC Adv 2016. [DOI: 10.1039/c6ra19390k] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this study, a novel Al2O3–Fe3O4–expanded graphite nano-sandwich adsorbent was prepared to remove fluoride from aqueous solutions.
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Affiliation(s)
- Chunhui Xu
- Department of Faculty of Material Science and Chemistry
- School of China University of Geosciences
- Wuhan 430074
- PR China
| | - Jianying Li
- Department of Faculty of Material Science and Chemistry
- School of China University of Geosciences
- Wuhan 430074
- PR China
| | - Fujian He
- Department of Faculty of Material Science and Chemistry
- School of China University of Geosciences
- Wuhan 430074
- PR China
| | - Yanli Cui
- Department of Faculty of Material Science and Chemistry
- School of China University of Geosciences
- Wuhan 430074
- PR China
| | - Can Huang
- Department of Faculty of Material Science and Chemistry
- School of China University of Geosciences
- Wuhan 430074
- PR China
| | - Hongyun Jin
- Department of Faculty of Material Science and Chemistry
- School of China University of Geosciences
- Wuhan 430074
- PR China
| | - Shuen Hou
- Department of Faculty of Material Science and Chemistry
- School of China University of Geosciences
- Wuhan 430074
- PR China
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Pandi K, Viswanathan N. Synthesis and applications of eco-magnetic nano-hydroxyapatite chitosan composite for enhanced fluoride sorption. Carbohydr Polym 2015; 134:732-9. [DOI: 10.1016/j.carbpol.2015.08.003] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Revised: 07/20/2015] [Accepted: 08/04/2015] [Indexed: 10/23/2022]
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40
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Chen JY, Luong HVT, Liu JC. Fractionation and release behaviors of metals (In, Mo, Sr) from industrial sludge. WATER RESEARCH 2015; 82:86-93. [PMID: 25979785 DOI: 10.1016/j.watres.2015.04.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Revised: 04/09/2015] [Accepted: 04/13/2015] [Indexed: 06/04/2023]
Abstract
Little is known on the fate of rare metals in the environment and the associated risks. The fractionation and release of three metals of an industrial sludge were assessed. The average concentration ranges from 39.3 to 41.5 mg/kg for indium (In), 43.1-77.8 mg/kg for molybdenum (Mo), and 131.1-376.4 mg/kg for strontium (Sr). Sequential extraction results implied that In was mobile, while Mo and Sr were immobile. However, experimental results from effects of Eh/pH revealed that In was slightly mobile under acidic (pH 4.5) in Eh range of 210-260 mV, and immobile under alkaline conditions (9.0) in Eh range of -250 to 125 mV. The release of Mo was slightly mobile under acidic conditions. However, Mo was very mobile under alkaline conditions and it increased with decreasing Eh. The release of Sr was significant under acidic conditions; however, it was immobile under alkaline conditions. Solubility and adsorption as affected by pH, and speciation could explain their release behaviors. Discrepancy in predictions from sequential extraction and actual observation from Eh/pH experiments was discussed.
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Affiliation(s)
- J Y Chen
- Department of Chemical Engineering, National Taiwan University of Science and Technology, 43 Keelung Road, Section 4, Taipei 106, Taiwan
| | - H V T Luong
- Department of Chemical Engineering, National Taiwan University of Science and Technology, 43 Keelung Road, Section 4, Taipei 106, Taiwan; Department of Chemical Engineering, Can Tho University, 3-2 Street, Can Tho, Viet Nam
| | - J C Liu
- Department of Chemical Engineering, National Taiwan University of Science and Technology, 43 Keelung Road, Section 4, Taipei 106, Taiwan.
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Pandi K, Viswanathan N. Enhanced defluoridation and facile separation of magnetic nano-hydroxyapatite/alginate composite. Int J Biol Macromol 2015; 80:341-9. [PMID: 26092170 DOI: 10.1016/j.ijbiomac.2015.06.019] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Revised: 06/03/2015] [Accepted: 06/11/2015] [Indexed: 11/30/2022]
Abstract
In this research study, a new magnetic biosorbent was developed by the fabrication of magnetic Fe3O4 particles on nano-hydroxyapatite(n-HAp)/alginate (Alg) composite (Fe3O4@n-HApAlg composite) for defluoridation in batch mode. The synthesized Fe3O4@n-HApAlg biocomposite possess an enhanced defluoridation capacity (DC) of 4050 mgF(-)/kg when compare to n-HApAlg composite, Fe3O4@n-HAp composite, n-HAp and Fe3O4 which possesses the DCs of 3870, 2469, 1296 and 1050 mgF(-)/kg respectively. The structural changes of the sorbent, before and after fluoride sorption were studied using FTIR, XRD and SEM with EDAX techniques. There are various physico-chemical parameters such as contact time, pH, co-existing anions, initial fluoride concentration and temperature were optimized for maximum fluoride removal. The equilibrium data was well modeled by Freundlich, Langmuir, Dubinin-Radushkevich (D-R) and Temkin isotherms. The present system follows Dubinin-Radushkevich isotherm model. The thermodynamic parameters reveals that the feasibility, spontaneity and endothermic nature of fluoride sorption. The performance and efficiency of the adsorbent material was examined with water samples collected from fluoride endemic areas namely Reddiyarchatram and Ammapatti in Dindigul District of Tamil Nadu using standard protocols.
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Affiliation(s)
- Kalimuthu Pandi
- Department of Chemistry, Anna University, University College of Engineering - Dindigul, Reddiyarchatram, Dindigul-624622, Tamil Nadu, India
| | - Natrayasamy Viswanathan
- Department of Chemistry, Anna University, University College of Engineering - Dindigul, Reddiyarchatram, Dindigul-624622, Tamil Nadu, India.
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42
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Kinetics and thermodynamics of chromate and phosphate uptake by polypyrrole: batch and column studies. J INCL PHENOM MACRO 2015. [DOI: 10.1007/s10847-015-0502-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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43
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Yousif AM, Atia AA, Zaid OF, Ibrahim IA. Efficient and Fast Adsorption of Phosphates and Sulphates on Prepared Modified Cellulose. J DISPER SCI TECHNOL 2015. [DOI: 10.1080/01932691.2014.988346] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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44
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A novel metal coordination enabled in carboxylated alginic acid for effective fluoride removal. Carbohydr Polym 2015; 118:242-9. [DOI: 10.1016/j.carbpol.2014.10.068] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Revised: 10/27/2014] [Accepted: 10/31/2014] [Indexed: 11/23/2022]
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45
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Pandi K, Viswanathan N. In situ precipitation of nano-hydroxyapatite in gelatin polymatrix towards specific fluoride sorption. Int J Biol Macromol 2015; 74:351-9. [DOI: 10.1016/j.ijbiomac.2014.12.004] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Revised: 11/27/2014] [Accepted: 12/09/2014] [Indexed: 10/24/2022]
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46
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Uptake fluoride from water by caclined Mg-Al-CO3 hydrotalcite: Mg/Al ratio effect on its structure, electrical affinity and adsorptive property. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.01.045] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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47
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Pandi K, Viswanathan N. Synthesis of alginate beads filled with nanohydroxyapatite: An efficient approach for fluoride sorption. J Appl Polym Sci 2015. [DOI: 10.1002/app.41937] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Kalimuthu Pandi
- Department of Chemistry; Anna University, University College of Engineering-Dindigul; Dindigul-624 622 Tamil Nadu India
| | - Natrayasamy Viswanathan
- Department of Chemistry; Anna University, University College of Engineering-Dindigul; Dindigul-624 622 Tamil Nadu India
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Pandi K, Viswanathan N. Synthesis of alginate bioencapsulated nano-hydroxyapatite composite for selective fluoride sorption. Carbohydr Polym 2014; 112:662-7. [DOI: 10.1016/j.carbpol.2014.06.029] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2014] [Revised: 05/25/2014] [Accepted: 06/11/2014] [Indexed: 11/25/2022]
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49
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Su CC, Abarca RRM, de Luna MDG, Lu MC. Phosphate recovery from fluidized-bed wastewater by struvite crystallization technology. J Taiwan Inst Chem Eng 2014. [DOI: 10.1016/j.jtice.2014.04.002] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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50
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Su CC, Dulfo LD, Dalida MLP, Lu MC. Magnesium phosphate crystallization in a fluidized-bed reactor: Effects of pH, Mg:P molar ratio and seed. Sep Purif Technol 2014. [DOI: 10.1016/j.seppur.2014.01.019] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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