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Zhao M, Li X, Yu JX, Li F, Guo L, Song G, Xiao C, Zhou F, Chi R, Feng G. Highly efficient recovery of phosphate and fluoride from phosphogypsum leachate: Selective precipitation and adsorption. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 367:122064. [PMID: 39098065 DOI: 10.1016/j.jenvman.2024.122064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 07/23/2024] [Accepted: 07/30/2024] [Indexed: 08/06/2024]
Abstract
Phosphogypsum, a typical by-product in the phosphorus chemical industry, could generate a large amount of leachate containing phosphate and fluoride in the process of rainfall and long-term stacking, which not only causes serious environmental pollution, but also leads to a waste of resources. In this study, a united treatment of calcium hydroxide precipitation and lanthanum zeolite (La-ZFA) adsorption was proposed to achieve the recovery of phosphate and fluoride from phosphogypsum leachate. In phosphogypsum, most phosphorus could be leached except P in the residual occurrence form, while for fluoride, only water-soluble F could be effectively leached. The optimum leaching amounts of phosphate and fluoride were 22.59 and 4.64 mg/g, respectively, at liquid-solid ratio of 400:1, leaching time of 120 min, pH of 6.0, particle size of >200 mesh (<0.075 mm), and leaching temperature of 25°C. Using Ca(OH)2 as the precipitant, the phosphate could be precipitated selectively from phosphogypsum leachate by controlling pH and time, and the concentrations of it decreased significantly to 0.29 mg/L at pH 10.0, with a removal efficiency of 99.48%. XRD, SEM and Visual MINTEQ software analysis proved that the main component of the precipitate was hydroxyapatite (Ca5(PO4)3(OH)). After P precipitation, a series of sorbents for fluoride were investigated, and La-ZFA sorbent was chosen and utilized to recover the fluoride from the leachate through a cyclic fixed-bed column. The efficiency of La-ZFA was basically not affected by the high concentration sulfate, and it can selectively adsorb fluoride from phosphogypsum leachate, leading to a final fluoride concentration of 0.29 mg/L in the effluent. The characterization demonstrated that fluoride might be adsorbed onto the La-ZFA via ligand exchange with hydroxy groups. The proposed method in this study is expected to sequentially recover phosphate and fluorine from the leachate of phosphogypsum, and it has great guiding significance for resource utilization and management of phosphogypsum.
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Affiliation(s)
- Mengxuan Zhao
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Hubei Novel Reactor & Green Chemical Technology Key Laboratory, Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, China
| | - Xiaodi Li
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Hubei Novel Reactor & Green Chemical Technology Key Laboratory, Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, China.
| | - Jun-Xia Yu
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Hubei Novel Reactor & Green Chemical Technology Key Laboratory, Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, China.
| | - Fei Li
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Hubei Novel Reactor & Green Chemical Technology Key Laboratory, Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, China
| | - Li Guo
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Hubei Novel Reactor & Green Chemical Technology Key Laboratory, Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, China
| | - Guoping Song
- Bureau of Ecology and Environment of Xiaogan City, Yingcheng Branch, Wuhan, China
| | - Chunqiao Xiao
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Hubei Novel Reactor & Green Chemical Technology Key Laboratory, Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, China
| | - Fang Zhou
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Hubei Novel Reactor & Green Chemical Technology Key Laboratory, Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, China
| | - Ruan Chi
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Hubei Novel Reactor & Green Chemical Technology Key Laboratory, Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, China; Hubei Three Gorges Laboratory, Yichang, Hubei, China
| | - Guoqing Feng
- Hubei Fuxing Environmental Protection Engineering Co. LTD, Hanchuan, Hubei, China
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Chen LH, Ban C, Helal MH, El-Bahy SM, Zeinhom M, Song S, Zhao YG, Lu Y. Preparation and modification of polymer microspheres, application in wastewater treatment: A review. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 366:121807. [PMID: 39025011 DOI: 10.1016/j.jenvman.2024.121807] [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: 04/05/2024] [Revised: 06/19/2024] [Accepted: 07/07/2024] [Indexed: 07/20/2024]
Abstract
The removal of various pollutants from water is necessary due to the increasing requirements for the removal of various pollutants from wastewater and the quality of drinking water. Polymer microspheres are regarded as exemplary adsorbent materials due to their high adsorption efficiency, excellent adsorption performance, and ease of handling. Herein, the advantages and disadvantages of different preparation methods, modifications, applications and the current research status of polymer microspheres are summarized at large. Furthermore, the enhanced performance of modified composite microspheres is emphasized, including adsorption efficiency, thermal stability, and significant improvements in physical and chemical properties. Subsequently, the current applications and potential of polymeric microspheres for wastewater treatment, including the removal of inorganic and organic pollutants, heavy metal ions, and other contaminants are summarized. Finally, future research directions for polymer microspheres are proposed, outlining the challenges and solutions associated with the application of polymer microspheres in wastewater treatment.
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Affiliation(s)
- Li-Hui Chen
- College of Environment, Zhejiang University of Technology, Hangzhou, 310014, China; College of Biological and Environmental Engineering, Zhejiang Shuren University, Hangzhou, 310015, China
| | - Cao Ban
- Zhejiang Institute of Geosciences, Zhejiang, 310015, China
| | - Mohamed H Helal
- Department of Chemistry, Faculty of Arts and Science, Northern Border University, Rafha, Saudi Arabia
| | - Salah M El-Bahy
- Department of Chemistry, Turabah University College, Taif University, Turabah, P.O. Box 11099, Taif, 21944, Saudi Arabia
| | - M Zeinhom
- Department of Chemistry, Faculty of Science, Al-Azhar University, Nasr City, 11884, Cairo, Egypt
| | - Shuang Song
- College of Environment, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Yong-Gang Zhao
- College of Biological and Environmental Engineering, Zhejiang Shuren University, Hangzhou, 310015, China.
| | - Yin Lu
- College of Biological and Environmental Engineering, Zhejiang Shuren University, Hangzhou, 310015, China.
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Foroutan R, Mohammadi R, Razeghi J, Ahmadi M, Ramavandi B. Amendment of Sargassum oligocystum bio-char with MnFe 2O 4 and lanthanum MOF obtained from PET waste for fluoride removal: A comparative study. ENVIRONMENTAL RESEARCH 2024; 251:118641. [PMID: 38458588 DOI: 10.1016/j.envres.2024.118641] [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: 01/21/2024] [Revised: 03/03/2024] [Accepted: 03/05/2024] [Indexed: 03/10/2024]
Abstract
The use of biomass and waste to produce adsorbent reduces the cost of water treatment. The bio-char of Sargassum oligocystum (BCSO) was modified with MnFe2O4 magnetic particles and La-metal organic framework (MOF) to generate an efficient adsorbent (BCSO/MnFe2O4@La-MOF) for fluoride ions (F-) removal from aqueous solutions. The performance of BCSO/MnFe2O4@La-MOF was compared with BCSO/MnFe2O4 and BCSO. The characteristics of the adsorbents were investigated using various techniques, which revealed that the magnetic composites were well-synthesized and exhibited superparamagnetic properties. The maximum adsorption efficiencies (BCSO: 97.84%, BCSO/MnFe2O4: 97.85%, and BCSO/MnFe2O4@La-MOF: 99.36%) were achieved under specific conditions of pH 4, F- concentration of 10 mg/L, and adsorbent dosage of 3, 1.5, and 1 g/L for BCSO, BCSO/MnFe2O4, and BCSO/MnFe2O4@La-MOF, respectively. The results demonstrated that the experimental data adheres to a pseudo-second-order kinetic model. The enthalpy, entropy, and Gibbs free energy were determined to be negative; thus, the F- adsorption was exothermic and spontaneous in the range of 25-50 °C. The equilibrium data of the process exhibited conformity with the Langmuir model. The maximum adsorption capacities of F- ions were determined as 10.267 mg/g for BCSO, 14.903 mg/g for the BCSO/MnFe2O4, and 31.948 mg/g for BCSO/MnFe2O4@La-MOF. The KF and AT values for the F- adsorption were obtained at 21.03 mg/g (L/mg)1/n and 100 × 10+9 L/g, indicating the pronounced affinity of the BCSO/MnFe2O4@La-MOF towards F- than other samples. The significant potential of the BCSO/MnFe2O4@La-MOF magnetic composite for F- removal from industrial wastewater, makes it suitable for repeated utilization in the adsorption process.
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Affiliation(s)
- Rauf Foroutan
- Polymer Research Laboratory, Department of Organic and Biochemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
| | - Reza Mohammadi
- Polymer Research Laboratory, Department of Organic and Biochemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran.
| | - Jafar Razeghi
- Department of Plant Biology, Faculty of Natural Science, University of Tabriz, Tabriz, Iran
| | - Mehrshad Ahmadi
- Systems Environmental Health and Energy Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Bahman Ramavandi
- Systems Environmental Health and Energy Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran.
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Xie DA, Sun Y, Yang YL, Shi XL, Suo G, Hou X, Ye X, Zhang L, Chen ZG. Remarkable purification of organic dyes by NiOOH-modified industrial waste residues. J Colloid Interface Sci 2024; 664:136-145. [PMID: 38460379 DOI: 10.1016/j.jcis.2024.02.190] [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: 10/31/2023] [Revised: 02/21/2024] [Accepted: 02/27/2024] [Indexed: 03/11/2024]
Abstract
Extracting functional materials from industrial waste residues to absorb organic dyes can maximize waste reuse and minimize water pollution. However, the extraordinarily low purification efficiency still limits the practical application of this strategy. Herein, the lamellar NiOOH is in-situ anchored on the industrial waste red mud surface (ARM/NiOOH) as an adsorbent to purify organic dyes in wastewater. ARM/NiOOH adsorbent with high specific surface area and porosity provides considerable active sites for the congo red (CR), thereby significantly enhancing the removal efficiency of CR. Besides, we fit a reasonable adsorption model for ARM/NiOOH adsorbent and investigate its adsorption kinetics. Resultantly, ARM/NiOOH adsorbent can remarkably adsorb 348.0 mg g-1 CR within 5 min, which is 7.91 times that of raw RM. Our work provides a strategy for reusing industrial waste and purifying sewage pollution, which advances wastewater treatment engineering.
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Affiliation(s)
- De-An Xie
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi'an 710021, PR China
| | - Yu Sun
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi'an 710021, PR China
| | - Yan-Ling Yang
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi'an 710021, PR China.
| | - Xiao-Lei Shi
- School of Chemistry and Physics, ARC Research Hub in Zero-emission Power Generation for Carbon Neutrality, and Centre for Materials Science, Queensland University of Technology, Brisbane, Queensland 4000, Australia
| | - Guoquan Suo
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi'an 710021, PR China
| | - Xiaojiang Hou
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi'an 710021, PR China
| | - Xiaohui Ye
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi'an 710021, PR China
| | - Li Zhang
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi'an 710021, PR China
| | - Zhi-Gang Chen
- School of Chemistry and Physics, ARC Research Hub in Zero-emission Power Generation for Carbon Neutrality, and Centre for Materials Science, Queensland University of Technology, Brisbane, Queensland 4000, Australia.
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5
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Zhou X, Li B, Zhao Q. Effective removal and adsorption mechanism of fluoride from water by biochar-based Ce(III)-La(III)-crosslinked sodium alginate hybrid hydrogel. Int J Biol Macromol 2024; 272:132925. [PMID: 38844281 DOI: 10.1016/j.ijbiomac.2024.132925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2024] [Revised: 05/25/2024] [Accepted: 06/03/2024] [Indexed: 06/16/2024]
Abstract
An eco-friendly macroparticle biochar (BC)-based Ce(III)-La(III) crosslinked sodium alginate (SA) hybrid hydrogel (BC/Ce-SA-La) was synthesized by droplet polymerization and characterized by SEM-EDS, XRD, FTIR, UV-Vis and XPS. The effects of dosage, pH, contact time, temperature and coexisting ions on the F- ions removal by hybrid hydrogel, and the adsorption performance, interaction mechanism and reusability were investigated. The results demonstrate that the composite has a fancy wrinkle structure with a particle size of about 1.8 mm and abundant porosity on the surface. The removal rate of F- ions by BC/Ce-SA-La reached 90.2 % under the conditions of pH 2.0, 200 min of contact time and 298 K. The adsorption behavior was perfectly explained by Langmuir model, and the maximum adsorption capacity reached 129 mg/g. The adsorption process was an endothermic spontaneous reaction and followed Pseudo-second-order rate model. The strong adsorption was attributed to multi-interactions including complexation, hydrogen bonding and electrostatic adsorption between the composite and F- ions. Coexisting ions hardly interfered with the adsorption of F- ions by BC/Ce-SA-La except for a slight effect of phosphate. The composite after F- ion adsorption was easily separated and could be reused at least three times. BC/Ce-SA-La is a cost-effective and promising granular biosorbent.
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Affiliation(s)
- Xueying Zhou
- Chemistry & Environment Science College, Inner Mongolia Normal University, China; Inner Mongolia Key Laboratory of Environmental Chemistry, Hohhot 010022, China
| | - Beigang Li
- Chemistry & Environment Science College, Inner Mongolia Normal University, China; Inner Mongolia Key Laboratory of Environmental Chemistry, Hohhot 010022, China.
| | - Qiange Zhao
- Chemistry & Environment Science College, Inner Mongolia Normal University, China; Inner Mongolia Key Laboratory of Environmental Chemistry, Hohhot 010022, China
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6
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Naboulsi A, Haydari I, Bouzid T, Grich A, Aziz F, Regti A, Himri ME, Haddad ME. Fixed-bed adsorption of pesticide agricultural waste using cross-linked adsorptive hydrogel composite beads. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:32320-32338. [PMID: 38653892 DOI: 10.1007/s11356-024-33388-6] [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: 11/15/2023] [Accepted: 04/15/2024] [Indexed: 04/25/2024]
Abstract
Adsorption column blockage due to solid adsorbent material is prevalent in laboratory-scale applications. Creating composite materials with stable geometries offers a viable solution. By crafting hydrogel beads using sodium alginate (Alg) and a bio-source like activated carbon (RMCA-P), it becomes possible to effectively eliminate agricultural pollutants, including the pesticide 2,4-D, from aqueous solutions. To evaluate the performance of these beads, a range of structural and textural analyses such as DRX, FTIR, SEM/EDX, BET, Zeta potential, Boehm titration, and iodine number were employed. Moreover, the study found that optimizing certain parameters greatly enhanced adsorption column efficiency. Specifically, increasing the bed height while reducing the flow rate of the adsorbate and the initial concentration in the inlet proved beneficial. The column demonstrated peak performance at a flow rate of 0.5 mL/min, a bed height of 35 cm, and an inlet adsorbate concentration of 50 mg/L. Under these conditions, the highest recorded removal rate for 2,4-D was 95.49%, which was subsequently confirmed experimentally at 95.05%. Both the Thomas and Yoon-Nelson models exhibited a good fit with the breakthrough curves. After undergoing three cycles of reuse, the RMCA-P/Alg hydrogel composite maintained a 2,4-D removal percentage of 74.21%. Notably, the RMCA-P/Alg beads exhibited effective removal of 2,4-D from herbicidal field waters in a continuous operational mode.
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Affiliation(s)
- Aicha Naboulsi
- Laboratory of Analytical and Molecular Chemistry, Faculty Poly-Disciplinary of Safi, BP 4162, 46 000, Safi, Morocco.
| | - Imane Haydari
- Laboratory of Water, Biodiversity, and Climate Change, Faculty of Sciences Semlalia, Cadi Ayyad University, BP2390, 40000, Marrakech, Morocco
| | - Taoufiq Bouzid
- Laboratory of Analytical and Molecular Chemistry, Faculty Poly-Disciplinary of Safi, BP 4162, 46 000, Safi, Morocco
| | - Abdelali Grich
- Laboratory of Analytical and Molecular Chemistry, Faculty Poly-Disciplinary of Safi, BP 4162, 46 000, Safi, Morocco
| | - Faissal Aziz
- Laboratory of Analytical and Molecular Chemistry, Faculty Poly-Disciplinary of Safi, BP 4162, 46 000, Safi, Morocco
- Laboratory of Water, Biodiversity, and Climate Change, Faculty of Sciences Semlalia, Cadi Ayyad University, BP2390, 40000, Marrakech, Morocco
| | - Abdelmajid Regti
- Laboratory of Analytical and Molecular Chemistry, Faculty Poly-Disciplinary of Safi, BP 4162, 46 000, Safi, Morocco
| | - Mamoune El Himri
- Laboratory of Analytical and Molecular Chemistry, Faculty Poly-Disciplinary of Safi, BP 4162, 46 000, Safi, Morocco
| | - Mohammadine El Haddad
- Laboratory of Analytical and Molecular Chemistry, Faculty Poly-Disciplinary of Safi, BP 4162, 46 000, Safi, Morocco
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Arab N, Derakhshani R, Sayadi MH. Approaches for the Efficient Removal of Fluoride from Groundwater: A Comprehensive Review. TOXICS 2024; 12:306. [PMID: 38787085 PMCID: PMC11126082 DOI: 10.3390/toxics12050306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2024] [Revised: 03/28/2024] [Accepted: 04/01/2024] [Indexed: 05/25/2024]
Abstract
Contamination of groundwater with fluoride represents a significant global issue, with high concentrations posing serious public health threats. While fluoride is a critical element in water, excessive levels can be detrimental to human health and potentially life-threatening. Addressing the challenge of removing fluoride from underground water sources via nanotechnological approaches is a pressing concern in environmental science. To collate relevant information, extensive literature searches were conducted across multiple databases, including Google Scholar, PubMed, Scopus, Web of Science, the American Chemical Society, Elsevier, Springer, and the Royal Society of Chemistry. VOS Viewer software version 1.6.20 was employed for a systematic review. This article delivers an exhaustive evaluation of various groundwater fluoride removal techniques, such as adsorption, membrane filtration, electrocoagulation, photocatalysis, and ion exchange. Among these, the application of nanoparticles emerges as a notable method. The article delves into nano-compounds, optimizing conditions for the fluoride removal process and benchmarking their efficacy against other techniques. Studies demonstrate that advanced nanotechnologies-owing to their rapid reaction times and potent oxidation capabilities-can remove fluoride effectively. The implementation of nanotechnologies in fluoride removal not only enhances water quality but also contributes to the safeguarding of human health.
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Affiliation(s)
- Negar Arab
- Department of Environmental Engineering, Faculty of Natural Resources and Environment, University of Birjand, Birjand 9717434765, Iran;
| | - Reza Derakhshani
- Department of Geology, Shahid Bahonar University of Kerman, Kerman 7616913439, Iran
- Department of Earth Sciences, Utrecht University, 3584 CB Utrecht, The Netherlands
| | - Mohammad Hossein Sayadi
- Faculty of Natural Resources and Environment, Shahid Bahonar University of Kerman, Kerman 7616913439, Iran;
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8
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Zhao S, Yang H, Liu X, Ma S, He P, Sun Z, Jia D, Colombo P, Zhou Y. Effect of PFDS on the immobilization of Cs + by metakaolin-based geopolymers in complex environments. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 356:120616. [PMID: 38518493 DOI: 10.1016/j.jenvman.2024.120616] [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: 10/25/2023] [Revised: 02/20/2024] [Accepted: 03/10/2024] [Indexed: 03/24/2024]
Abstract
Metakaolin-based geopolymers are very promising materials for improving the safety of low and intermediate level radioactive waste disposal, with respect to ordinary Portland cement, due to their excellent immobilization performance for Cs+ and superior chemical stability. However, their application is limited by the fact that the leaching behavior of Cs+ is susceptible to the presence of other ions in the environment. Here, we propose a way to modify a geopolymer using perfluorodecyltriethoxysilane (PDFS), successfully reducing the leaching rate of Cs+ in the presence of multiple competitive cations due to blocking the diffusion of water. The leachability index of the modified samples in deionized water and highly concentrated saline water reached 11.0 and 8.0, respectively. The reaction mechanism between PDFS and geopolymers was systematically investigated by characterizing the microstructure and chemical bonding of the material. This work provides a facile and successful approach to improve the immobilization of Cs ions by geopolymers in real complex environments, and it could be extended to further improve the reliability of geopolymers used in a range of applications.
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Affiliation(s)
- Shengjian Zhao
- Institute for Advanced Ceramics, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, PR China; Key Laboratory of Advanced Structural-Functional Integration Materials & Green Manufacturing Technology, Harbin Institute of Technology, Harbin, PR China
| | - Hualong Yang
- Institute for Advanced Ceramics, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, PR China; Key Laboratory of Advanced Structural-Functional Integration Materials & Green Manufacturing Technology, Harbin Institute of Technology, Harbin, PR China
| | - Xuehui Liu
- Institute for Advanced Ceramics, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, PR China; Key Laboratory of Advanced Structural-Functional Integration Materials & Green Manufacturing Technology, Harbin Institute of Technology, Harbin, PR China
| | - Siqi Ma
- Institute for Advanced Ceramics, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, PR China; Key Laboratory of Advanced Structural-Functional Integration Materials & Green Manufacturing Technology, Harbin Institute of Technology, Harbin, PR China
| | - Peigang He
- Institute for Advanced Ceramics, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, PR China; Key Laboratory of Advanced Structural-Functional Integration Materials & Green Manufacturing Technology, Harbin Institute of Technology, Harbin, PR China.
| | | | - Dechang Jia
- Institute for Advanced Ceramics, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, PR China; Key Laboratory of Advanced Structural-Functional Integration Materials & Green Manufacturing Technology, Harbin Institute of Technology, Harbin, PR China
| | - Paolo Colombo
- Department of Industrial Engineering, University of Padova, Padova, Italy; Department of Materials Science and Engineering, The Pennsylvania State University, Philadelphia, USA
| | - Yu Zhou
- Institute for Advanced Ceramics, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, PR China; Key Laboratory of Advanced Structural-Functional Integration Materials & Green Manufacturing Technology, Harbin Institute of Technology, Harbin, PR China; School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen, PR China
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Xie S, Xiao Y, Huang L, Li J, Yan J, Li Q, Li M, Zhang H. The Constructing of the Oxide Phase Diagram for Fluoride Adsorption on La-Fe-Al: A Collaborative Study of Density Functional Calculation and Experimentation. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:619. [PMID: 38607153 PMCID: PMC11013458 DOI: 10.3390/nano14070619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Revised: 03/24/2024] [Accepted: 03/30/2024] [Indexed: 04/13/2024]
Abstract
In recent years, fluoride pollution in water is a problem that has attracted much attention from researchers. The removal of fluoride-containing wastewater by adsorption with metal oxide as an adsorbent is the most common treatment method. Based on this, the effect of the doping ratio of La2O3, Fe2O3, and Al2O3 on the fluoride-removal performance was discussed by constructing a phase diagram. In this study, the adsorption mechanism of nanocrystalline lanthanum oxide terpolymer was investigated by density functional theory calculation and experiment. The optimal pH condition selected in the experiment was three, and the adsorption kinetics of fluoride ions were more consistent with the quasi-second-order kinetic model. The adsorption thermodynamics was more consistent with the Langmuir model. When the La-Fe-Al ternary composite oxides achieved the optimal adsorption efficiency for fluoride ions, the mass synthesis ratio was Al2O3:(Fe2O3:La2O3 = 1:2) = 1:100, resulting in a fluoride ion removal rate of up to 99.78%. Density functional calculations revealed that the La-Fe-Al ternary composite oxides had three important adsorption sites for La, Fe, and Al. Among them, the adsorption capacity for HF was Fe2O3 > La2O3 > Al2O3, and for F- was La2O3 > Al2O3 > Fe2O3. This provided good guidance for designing adsorbents to remove fluoride.
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Affiliation(s)
- Shaojian Xie
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou Higher Education Mega Center, Guangzhou 510006, China; (S.X.); (Y.X.); (J.L.); (J.Y.); (Q.L.); (M.L.)
| | - Yao Xiao
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou Higher Education Mega Center, Guangzhou 510006, China; (S.X.); (Y.X.); (J.L.); (J.Y.); (Q.L.); (M.L.)
| | - Lei Huang
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou Higher Education Mega Center, Guangzhou 510006, China; (S.X.); (Y.X.); (J.L.); (J.Y.); (Q.L.); (M.L.)
| | - Jiaxin Li
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou Higher Education Mega Center, Guangzhou 510006, China; (S.X.); (Y.X.); (J.L.); (J.Y.); (Q.L.); (M.L.)
| | - Jia Yan
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou Higher Education Mega Center, Guangzhou 510006, China; (S.X.); (Y.X.); (J.L.); (J.Y.); (Q.L.); (M.L.)
| | - Qian Li
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou Higher Education Mega Center, Guangzhou 510006, China; (S.X.); (Y.X.); (J.L.); (J.Y.); (Q.L.); (M.L.)
| | - Meng Li
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou Higher Education Mega Center, Guangzhou 510006, China; (S.X.); (Y.X.); (J.L.); (J.Y.); (Q.L.); (M.L.)
| | - Hongguo Zhang
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou Higher Education Mega Center, Guangzhou 510006, China; (S.X.); (Y.X.); (J.L.); (J.Y.); (Q.L.); (M.L.)
- Guangzhou University-Linköping University Research Center on Urban Sustainable Development, Guangzhou University, Guangzhou 510006, China
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Lu P, Zhang N, Wang Y, Wang Y, Zhang J, Cai Q, Zhang Y. Synthesis of BiOX-Red Mud/Granulated Blast Furnace Slag Geopolymer Microspheres for Photocatalytic Degradation of Formaldehyde. MATERIALS (BASEL, SWITZERLAND) 2024; 17:1585. [PMID: 38612099 PMCID: PMC11012286 DOI: 10.3390/ma17071585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 03/25/2024] [Accepted: 03/28/2024] [Indexed: 04/14/2024]
Abstract
Release of formaldehyde gas indoors is a serious threat to human health. The traditional adsorption method is not stable enough for formaldehyde removal. Photocatalytic degradation of formaldehyde is effective and rapid, but photocatalysts are generally expensive and not easy to recycle. In this paper, geopolymer microspheres were applied as matrix materials for photocatalysts loading to degrade formaldehyde. Geopolymer microspheres were prepared from red mud and granulated blast furnace slag as raw materials by alkali activation. When the red mud doping was 50%, the concentration of NaOH solution was 6 mol/L, and the additive amount was 30 mL, the prepared geopolymer microspheres possessed good morphological characteristics and a large specific surface area of 38.80 m2/g. With the loading of BiOX (X = Cl, Br, I) photocatalysts on the surface of geopolymer microspheres, 85.71% of formaldehyde gas were adsorbed within 60 min. The formaldehyde degradation rate of the geopolymer microspheres loaded with BiOI reached 87.46% within 180 min, which was 23.07% higher than that of the microspheres loaded with BiOBr, and 50.50% higher than that of the microspheres loaded with BiOCl. While ensuring the efficient degradation of formaldehyde, the BiOX (X = Cl, Br, I)-loaded geopolymer microspheres are easy to recycle and can save space. This work not only promotes the resource utilization of red mud and granulated blast furnace slag, but also provides a new idea on the formation of catalysts in the process of photocatalytic degradation of formaldehyde.
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Affiliation(s)
- Ping Lu
- Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources, China University of Geosciences, Beijing 100083, China
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, China University of Geosciences, Beijing 100083, China
- National Laboratory of Mineral Materials, China University of Geosciences, Beijing 100083, China
- School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China
| | - Na Zhang
- Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources, China University of Geosciences, Beijing 100083, China
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, China University of Geosciences, Beijing 100083, China
- National Laboratory of Mineral Materials, China University of Geosciences, Beijing 100083, China
- School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China
| | - Ying Wang
- Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources, China University of Geosciences, Beijing 100083, China
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, China University of Geosciences, Beijing 100083, China
- National Laboratory of Mineral Materials, China University of Geosciences, Beijing 100083, China
- School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China
| | - Yidi Wang
- Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources, China University of Geosciences, Beijing 100083, China
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, China University of Geosciences, Beijing 100083, China
- National Laboratory of Mineral Materials, China University of Geosciences, Beijing 100083, China
- School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China
| | - Jiale Zhang
- Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources, China University of Geosciences, Beijing 100083, China
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, China University of Geosciences, Beijing 100083, China
- National Laboratory of Mineral Materials, China University of Geosciences, Beijing 100083, China
- School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China
| | - Qingyi Cai
- Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources, China University of Geosciences, Beijing 100083, China
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, China University of Geosciences, Beijing 100083, China
- National Laboratory of Mineral Materials, China University of Geosciences, Beijing 100083, China
- School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China
| | - Yihe Zhang
- Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources, China University of Geosciences, Beijing 100083, China
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, China University of Geosciences, Beijing 100083, China
- National Laboratory of Mineral Materials, China University of Geosciences, Beijing 100083, China
- School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China
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11
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Fang Y, Yang L, Rao F, Zhang K, Qin Z, Song Z, Na Z. Behaviors and Mechanisms of Adsorption of MB and Cr(VI) by Geopolymer Microspheres under Single and Binary Systems. Molecules 2024; 29:1560. [PMID: 38611839 PMCID: PMC11013745 DOI: 10.3390/molecules29071560] [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: 01/25/2024] [Revised: 03/09/2024] [Accepted: 03/13/2024] [Indexed: 04/14/2024] Open
Abstract
Geopolymers show great potential in complex wastewater treatment to improve water quality. In this work, general geopolymers, porous geopolymers and geopolymer microspheres were prepared by the suspension curing method using three solid waste products, coal gangue, fly ash and blast furnace slag. The microstructure, morphology and surface functional groups of the geopolymers were studied by SEM, XRD, XRF, MIP, FTIR and XPS. It was found that the geopolymers possess good adsorption capacities for both organic and inorganic pollutants. With methylene blue and potassium dichromate as the representative pollutants, in order to obtain the best removal rate, the effects of the adsorbent type, dosage of adsorbent, concentration of methylene blue and potassium dichromate and pH on the adsorption process were studied in detail. The results showed that the adsorption efficiency of the geopolymers for methylene blue and potassium dichromate was in the order of general geopolymers < porous geopolymers < geopolymer microspheres, and the removal rates were up to 94.56% and 79.46%, respectively. Additionally, the competitive adsorption of methylene blue and potassium dichromate in a binary system was also studied. The mechanism study showed that the adsorption of methylene blue was mainly through pore diffusion, hydrogen bond formation and electrostatic adsorption, and the adsorption of potassium dichromate was mainly through pore diffusion and redox reaction. These findings demonstrate the potential of geopolymer microspheres in adsorbing organic and inorganic pollutants, and, through five cycles of experiments, it is demonstrated that MGP exhibits excellent recyclability.
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Affiliation(s)
- Yi Fang
- Zijin School of Geology and Mining, Fuzhou University, Fuzhou 350108, China; (Y.F.); (K.Z.); (Z.Q.)
- Fujian Key Laboratory of Green Extraction and High-Value Utilization of New Energy Metals, Fuzhou 350108, China
| | - Lang Yang
- Zijin School of Geology and Mining, Fuzhou University, Fuzhou 350108, China; (Y.F.); (K.Z.); (Z.Q.)
- Fujian Key Laboratory of Green Extraction and High-Value Utilization of New Energy Metals, Fuzhou 350108, China
- State Key Laboratory of Mineral Processing, Beijing 102628, China
| | - Feng Rao
- Zijin School of Geology and Mining, Fuzhou University, Fuzhou 350108, China; (Y.F.); (K.Z.); (Z.Q.)
- Fujian Key Laboratory of Green Extraction and High-Value Utilization of New Energy Metals, Fuzhou 350108, China
| | - Kaiming Zhang
- Zijin School of Geology and Mining, Fuzhou University, Fuzhou 350108, China; (Y.F.); (K.Z.); (Z.Q.)
- Fujian Key Laboratory of Green Extraction and High-Value Utilization of New Energy Metals, Fuzhou 350108, China
| | - Zhuolin Qin
- Zijin School of Geology and Mining, Fuzhou University, Fuzhou 350108, China; (Y.F.); (K.Z.); (Z.Q.)
- Fujian Key Laboratory of Green Extraction and High-Value Utilization of New Energy Metals, Fuzhou 350108, China
| | - Zhenguo Song
- State Key Laboratory of Mineral Processing, Beijing 102628, China
| | - Zhihui Na
- Yunnan Phosphate Haikou Co., Ltd., Kunming 650114, China
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12
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Gonçalves NPF, da Silva EF, Tarelho LAC, Labrincha JA, Novais RM. Simultaneous removal of multiple metal(loid)s and neutralization of acid mine drainage using 3D-printed bauxite-containing geopolymers. JOURNAL OF HAZARDOUS MATERIALS 2024; 462:132718. [PMID: 37844497 DOI: 10.1016/j.jhazmat.2023.132718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 09/12/2023] [Accepted: 10/03/2023] [Indexed: 10/18/2023]
Abstract
The mining industry is one of the largest sources of environmental concern globally. Herein we report for the first time the application of highly porous 3D-printed sorbents containing high amounts (50 wt%) of red mud, a hazardous waste derived from the alumina industry, for the remediation of acid mine drainage (AMD). The sorption capacity of the inorganic polymers was initially evaluated for the simultaneous removal of five metal(loid) elements, namely Cu(II), Ni(II), Zn(II), Cd(II) and As(V) in synthetic wastewater. The effect of the initial concentration, pH and contact time were assessed, reaching removal efficiencies between 64% and 98%, at pH 4 and initial concentration of 50 mg L-1 of each cation, after 24 h of contact time. The 3D-printed lattices were then used for the remediation of the real AMD water samples, and the role of adsorption and acidic neutralization was investigated. Lattices were also successfully regenerated and reused up to five cycles without compromising their performance. This work paves the way for the use of an industrial waste derived from the production of alumina as raw material for the management of the hazardous AMD.
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Affiliation(s)
- Nuno P F Gonçalves
- Department of Chemistry/CICECO-Aveiro Institute of Materials, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
| | | | - Luís A C Tarelho
- Department of Environment and Planning & Centre for Environmental and Marine Studies (CESAM), University of Aveiro, Aveiro, Portugal
| | - João A Labrincha
- Dept. of Materials and Ceramic Engineering/CICECO-Aveiro Institute of Materials, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Rui M Novais
- Dept. of Materials and Ceramic Engineering/CICECO-Aveiro Institute of Materials, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
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13
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Chen C, Xu W, Li G, Qu H, Ma C, Zhang H, Bahojb Noruzi E, Cai M, Wang M, Hou X, Li H. Selectively transport and removal of fluoride ion by pillar[5]arene polymer-filled nanochannel membrane. Chemistry 2024:e202303742. [PMID: 38214487 DOI: 10.1002/chem.202303742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Revised: 01/05/2024] [Accepted: 01/11/2024] [Indexed: 01/13/2024]
Abstract
Excess fluoride ions in groundwater accumulate through the roots of crops, affecting photosynthesis and inhibiting their growth. Long-term bioaccumulation also threatens human health because it is poorly degradable and toxic. Currently, one of the biggest challenges is developing a unique material that can efficiently remove fluoride ions from the environment. The excellent properties of functionalized pillar[5]arene polymer-filled nanochannel membranes were explored to address this challenge. Constructing a multistage porous nanochannel membrane, consisting of microscale etched nanochannels and nanoscale pillar[5]arene cross-linked polymer voids. A fluoride removal rate of 0.0088 mmol ⋅ L-1 ⋅ min-1 was achieved. Notably, this rate surpassed the rates observed with other control ions by a factor of 6 to 8.8. Our research provides a new direction for developing water fluoride ion removal materials.
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Affiliation(s)
- Chunxiu Chen
- National Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, P.R. China
| | - Weiwei Xu
- National Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, P.R. China
| | - Guang Li
- National Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, P.R. China
| | - Haonan Qu
- National Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, P.R. China
| | - Cuiguang Ma
- National Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, P.R. China
| | - Haifan Zhang
- National Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, P.R. China
| | - Ehsan Bahojb Noruzi
- National Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, P.R. China
| | - Meng Cai
- National Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, P.R. China
| | - Miao Wang
- College of Materials, Xiamen University, Xiamen, 361005, China
| | - Xu Hou
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Haibing Li
- National Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, P.R. China
- State Key Laboratory of Featured MetaMaterials and Life-cycle Safety for Composite Structures, Guangxi University, Nanning, 530004, P. R. China
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14
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Zeng Z, Li Q, Yan J, Huang L, Arulmani SRB, Zhang H, Xie S, Sio W. The model and mechanism of adsorptive technologies for wastewater containing fluoride: A review. CHEMOSPHERE 2023; 340:139808. [PMID: 37591373 DOI: 10.1016/j.chemosphere.2023.139808] [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: 07/04/2023] [Revised: 08/06/2023] [Accepted: 08/11/2023] [Indexed: 08/19/2023]
Abstract
With the continuous development of society, industrialization, and human activities have been producing more and more pollutants. Fluoride discharge is one of the main causes of water pollution. This review summarizes various commonly used and effective fluoride removal technologies, including ion exchange technology, electrochemical technology, coagulation technology, membrane treatment, and adsorption technology, and points out the outstanding advantages of adsorption technology. Various commonly used fluoride removal techniques as well as typical adsorbent materials have been discussed in published papers, however, the relationship between different adsorbent materials and adsorption models has rarely been explored, therefore, this paper categorizes and summarizes the various models involved in static adsorption, dynamic adsorption, and electrosorption fluoride removal processes, such as pseudo-first-order and pseudo-second-order kinetic models, Langmuir and Freundlich isotherm models, Thomas and Clark dynamic adsorption models, including the mathematical equations of the corresponding models and the significance of the models are also comprehensively summarized. Furthermore, this comprehensive discussion delves into the fundamental adsorption mechanisms, quantification of maximum adsorption capacity, evaluation of resistance to anion interference, and assessment of adsorption regeneration performance exhibited by diverse adsorption materials. The selection of the best adsorption model not only predicts the adsorption performance of the adsorbent but also provides a better description and understanding of the details of each part of the adsorption process, which facilitates the adjustment of experimental conditions to optimize the adsorption process. This review may provide some guidance for the development of more cost-effective adsorbent materials and adsorption processes in the future.
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Affiliation(s)
- Zhen Zeng
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Qian Li
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Jia Yan
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Lei Huang
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China.
| | - Samuel Raj Babu Arulmani
- Université de Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), Campus de Beaulieu, 35000, Rennes, France
| | - Hongguo Zhang
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China; Guangzhou University-Linköping University Research Center on Urban Sustainable Development, Guangzhou University, Guangzhou, 510006, China.
| | - Shaojian Xie
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Wenghong Sio
- Institute of Applied Physics and Materials Engineering, University of Macau, Macao SAR, 999078, China
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15
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Su Q, Wei X, Yang G, Ou Z, Zhou Z, Huang R, Shi C. In-situ conversion of geopolymer into novel floral magnetic sodalite microspheres for efficient removal of Cd(II) from water. JOURNAL OF HAZARDOUS MATERIALS 2023; 453:131363. [PMID: 37043850 DOI: 10.1016/j.jhazmat.2023.131363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Revised: 03/24/2023] [Accepted: 04/03/2023] [Indexed: 06/19/2023]
Abstract
In the present work, a novel, floral-like, magnetic sodalite microsphere (SODM) was synthesized in situ by using fly ash (FA) and metakaolin (MK) as raw materials and was used to remove Cd(II) from water. Its magnetism can solve the problems of adsorbent recovery and possible secondary pollution. During the static adsorption, SODM shows a maximum adsorption capacity of 245.17 mg/g. The adsorption of Cd(II) on the SODM surface is spontaneous, exothermic, and physicochemical adsorption, which was evaluated by thermodynamics, kinetics, and isotherm studies. During dynamic adsorption, SODM shows a maximum adsorption capacity of 342.74 mg/g in the simulated solution prepared by the deionized water, compared to 215.88 mg/g in the simulated solution prepared using Xiangsi Lake water from Guangxi Minzu University. At 0.5 g SODM dosage in the dynamic adsorption, the adsorption capacity could rise to 632.81 mg/g. These results demonstrated the excellent Cd (II) adsorption performance of the SODM. The adsorption of cadmium on the SODM surface includes the synergistic effects of electrostatic attraction, ion exchange, and surface coordination reaction. Besides, the SODM shows good regeneration performance in both the deionized water and Xiangsi Lake water. The present study explores SODM as an adsorbent for the Cd (II) removal from wastewater and unbolts the industrial applicability of the SODM in the field of wastewater purification.
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Affiliation(s)
- Qiaoqiao Su
- Key Laboratory of Disaster Prevention and Structural Safety of China Ministry of Education, School of Civil Engineering and Architecture, Guangxi University, Nanning, PR China; Guangxi Key Laboratory for Polysaccharide Materials and their Modification of Guangxi Minzu Univerisity, Key Laboratory of New Technology for Chemical and Biological Transformation Process of Guangxi Higher Education Institutes, College of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning, Guangxi, PR China
| | - Xiang Wei
- Guangxi Key Laboratory for Polysaccharide Materials and their Modification of Guangxi Minzu Univerisity, Key Laboratory of New Technology for Chemical and Biological Transformation Process of Guangxi Higher Education Institutes, College of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning, Guangxi, PR China
| | - Guangyao Yang
- Guangxi Key Laboratory for Polysaccharide Materials and their Modification of Guangxi Minzu Univerisity, Key Laboratory of New Technology for Chemical and Biological Transformation Process of Guangxi Higher Education Institutes, College of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning, Guangxi, PR China
| | - Zhaohui Ou
- Guangxi Key Laboratory for Polysaccharide Materials and their Modification of Guangxi Minzu Univerisity, Key Laboratory of New Technology for Chemical and Biological Transformation Process of Guangxi Higher Education Institutes, College of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning, Guangxi, PR China
| | - Zhicheng Zhou
- Power Dispatching and Control Center, China Southern Power Grid Guangxi Power Grid Co Ltd, Guangxi, Nanning 530023, PR China
| | - Ronghua Huang
- Guangxi Key Laboratory for Polysaccharide Materials and their Modification of Guangxi Minzu Univerisity, Key Laboratory of New Technology for Chemical and Biological Transformation Process of Guangxi Higher Education Institutes, College of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning, Guangxi, PR China
| | - Caijun Shi
- Key Laboratory of Building Safety and Energy Efficiency (Ministry of Education), College of Civil Engineering, Hunan University, Changsha, PR China.
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Geopolymer Composites—In Environmentally Friendly Aspects. Gels 2023; 9:gels9030196. [PMID: 36975645 PMCID: PMC10048174 DOI: 10.3390/gels9030196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 02/28/2023] [Accepted: 03/02/2023] [Indexed: 03/08/2023] Open
Abstract
In the present work, a new, low energy consumption sol–gel synthesis route has been developed for geopolymer composites. Instead of the typically published 0.1–1.0 Al/Si molar ratios, the efforts of this study concentrated on the realization of >2.5 Al/Si molar ratios in the composite systems. The higher Al molar ratio significantly improves the mechanical properties. A very important aim was also the recycling of industrial waste materials with attention to environmentally friendly requirements. The very dangerous, toxic red mud as a waste product of aluminum industrial fabrication was selected for reclamation. The structural investigation was carried out by 27Al MAS NMR, XRD, and thermal analysis. The structural examination has unambiguously proven the composite phases in both gel and solid systems. The characterization of composites was performed with mechanical strength and water solubility measurements.
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Poly(styrene-co-4-hydroxystyrene) nanofiber membrane for highly selective and efficient Rb+ capture from high salinity solution. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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Wei H, Yi M, Li X, Shao L, Gao F, Cui X, Wang K. Preparation of Metakaolin-Based Geopolymer Microspheres (MK@GMs) and Efficient Adsorption of F- from Acidic Wastewater. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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