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Feng J, Wang Z, Zhang W, Zhao X, Zhang J, Liu Y, Yan W. Insight into the ion exchange in the adsorptive removal of fluoride by doped polypyrrole from water. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:67267-67279. [PMID: 34247346 DOI: 10.1007/s11356-021-15027-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 06/16/2021] [Indexed: 06/13/2023]
Abstract
In this study, the polypyrrole (PPy) samples doped with Cl- (PPy-Cl), SO42- (PPy-SO4) and SO42-+Cl- (PPy-SO4+Cl) were synthesized by chemical polymerization for the adsorptive removal of fluoride ion from water. The structure and morphology of the as-prepared PPy samples were characterized by FT-IR, BET, SEM, XPS, and zeta potential. The adsorption experiments revealed that the PPy-Cl exhibited faster kinetics and higher adsorption capacity (13.98 mg/g), more than 4 times that of PPy-SO4 (3.08 mg/g) and PPy-SO4+Cl (3.17 mg/g). The kinetics of the adsorption followed the pseudo-second-order model and the adsorption isotherm data fitted well to the Langmuir model. FT-IR, EDX, and XPS tests for PPy samples before and after fluoride adsorption demonstrated that anion exchange between F- and Cl- or SO42- was the prior mechanism for fluoride ion removal from water. Cl- was more favorable than SO42- in the ion exchange with F-. Meanwhile, the Cl- or SO42- exchanged with F- was mainly bound to the active nitrogen that accounts for 6% of the total nitrogen in PPy molecular matrix. Further study of zeta potential and pH influence experiment demonstrated the electrostatic interaction is auxiliary interaction for the fluoride removal by doped PPy samples.
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Affiliation(s)
- Jiangtao Feng
- Department of Environmental Science and Engineering, State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, 710049, China.
| | - Zhenyu Wang
- Department of Environmental Science and Engineering, State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Wenlong Zhang
- Department of Environmental Science and Engineering, State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Xuyang Zhao
- Department of Environmental Science and Engineering, State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Juantao Zhang
- Department of Environmental Science and Engineering, State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, 710049, China
- CNPC Tubular Goods Research Institute, State Key Laboratory for Performance and Structure Safety of Petroleum Tubular Goods and Equipment Materials, Xi'an, 710077, Shaanxi, China
| | - Yunpeng Liu
- Department of Environmental Science and Engineering, State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Wei Yan
- Department of Environmental Science and Engineering, State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, 710049, China
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Acharya R, Lenka A, Parida K. Magnetite modified amino group based polymer nanocomposites towards efficient adsorptive detoxification of aqueous Cr (VI): A review. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116487] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Ethylenediamine and Pentaethylene Hexamine Modified Bamboo Sawdust by Radiation Grafting and Their Adsorption Behavior for Phosphate. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11177854] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Phosphate is an important component for the growth of plants and microorganisms; however, excess phosphate causes serious eutrophication in natural waters. New potential low-loss adsorbents from natural biomass for phosphate removal are desired. Bamboo is one of the most abundant renewable cellulose resources; however, the pure bamboo cellulose is poor to adsorb phosphate. To enhance the adsorption capacity, in this work, bamboo sawdust (BS) was chemically modified by two kinds of amines. First, glycidyl methacrylate (GMA) was grafted on BS using radiation induced graft polymerization. Then, the GMA-grafted BS was further modified by a ring-opening reaction with amines, including ethylenediamine (EDA) and pentaethylene hexamine (PEHA). The amine groups were then quaternized to prepare the BS-GMA-EDA-Q and BS-GMA-PEHA-Q adsorbents. The adsorbents were characterized by FTIR, SEM, TG, and XPS analysis. The adsorption performances of the adsorbents for phosphate were evaluated through batch experiments. The adsorption by BS-GMA-EDA-Q and BS-GMA-PEHA-Q both well obeyed the pseudo-second-order kinetic model and the Langmuir isotherm model, indicating that the adsorption process was chemical monomolecular layer adsorption. The maximum adsorption capacities for BS-GMA-EDA-Q and BS-GMA-PEHA-Q calculated by the Langmuir model were 85.25 and 152.21 mg/g, respectively. A total of 1 mol/L HCl was used to elute the saturated adsorbents. A negligible decrease in adsorption capacity was found after five adsorption–desorption cycles.
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Zhou T, Liang Q, Zhou X, Luo H, Chen W. Enhanced removal of toxic hexavalent chromium from aqueous solution by magnetic Zr-MOF@polypyrrole: performance and mechanism. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:13084-13096. [PMID: 33496945 DOI: 10.1007/s11356-021-12341-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 01/02/2021] [Indexed: 06/12/2023]
Abstract
Magnetic Zr-based metal organic framework (UiO-66) @Polypyrrole (magnetic UiO-66@Ppy) was prepared to eliminate Cr(VI) from water. SEM and TEM results clearly revealed that the magnetic UiO-66@Ppy was a core-double-shell structure with the core of Fe3O4, inner shell UiO-66, and outer shell Ppy. The introduction of zirconium MOFs UiO-66 effectively prevented the agglomeration of polypyrrole and provided more available adsorption sites, the surface area increased from 9.57 m2/g (Ppy) to 10.57 m2/g (Fe3O4@Ppy) and 52.49 m2/g (magnetic UiO-66@Ppy). The magnetic UiO-66@Ppy possessed a high adsorption capacity of 259.1 mg/g in removing Cr(VI) from water. Adsorption kinetics followed the pseudo-second-order model. The removal of Cr(VI) involved the following mechanisms: (1) electrostatic attraction and ions exchange, the HCrO4- was adsorbed on the surface of magnetic UiO-66@Ppy by the protonated N(PpyN+) and Cl-; (2) reduction, Cr(VI) was reduced to Cr(III) by the reductive functional group(-NH-); (3) chelation, Cr(III) was immobilized on adsorbent by amine groups.
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Affiliation(s)
- Tingting Zhou
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, People's Republic of China
- The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters of Ministry of Education, Guangzhou, 510006, People's Republic of China
| | - Qianwei Liang
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, People's Republic of China
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510641, People's Republic of China
| | - Xin Zhou
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, People's Republic of China
- The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters of Ministry of Education, Guangzhou, 510006, People's Republic of China
| | - HanJin Luo
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, People's Republic of China.
- The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters of Ministry of Education, Guangzhou, 510006, People's Republic of China.
- Guangdong Engineering and Technology Research Center for Environmental Nanomaterials, Guangzhou, 510006, People's Republic of China.
| | - Wei Chen
- Chongqing Key Laboratory of Environmental Materials & Remediation Technologies, Chongqing University of Art and Science, Chongqing, 402160, People's Republic of China
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Yang Y, Chen N, Feng C, Li M, Gao Y. Chromium removal using a magnetic corncob biochar/polypyrrole composite by adsorption combined with reduction: Reaction pathway and contribution degree. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.08.035] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Hong S, Cannon FS, Hou P, Byrne T, Nieto-Delgado C. Adsorptive removal of sulfate from acid mine drainage by polypyrrole modified activated carbons: Effects of polypyrrole deposition protocols and activated carbon source. CHEMOSPHERE 2017; 184:429-437. [PMID: 28618275 DOI: 10.1016/j.chemosphere.2017.06.019] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Revised: 04/25/2017] [Accepted: 06/06/2017] [Indexed: 06/07/2023]
Abstract
Polypyrrole modified activated carbon was used to remove sulfate from acid mine drainage water. The polypyrrole modified activated carbon created positively charged functionality that offered elevated sorption capacity for sulfate. The effects of the activated carbon type, approach of polymerization, preparation temperature, solvent, and concentration of oxidant solution over the sulfate adsorption capacity were studied at an array of initial sulfate concentrations. A hardwood based activated carbon was the more favorable activated carbon template, and this offered better sulfate removal than when using bituminous based activated carbon or oak wood activated carbon as the template. The hardwood-based activated carbon modified with polypyrrole removed 44.7 mg/g sulfate, and this was five times higher than for the pristine hardwood-based activated carbon. Various protocols for depositing the polypyrrole onto the activated carbon were investigated. When ferric chloride was used as an oxidant, the deposition protocol that achieved the most N+ atomic percent (3.35%) while also maintaining the least oxygen atomic percent (6.22%) offered the most favorable sulfate removal. For the rapid small scale column tests, when processing the AMD water, hardwood-based activated carbon modified with poly pyrrole exhibited 33 bed volume compared to the 5 bed volume of pristine activated carbons.
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Affiliation(s)
- Siqi Hong
- Department of Civil and Environmental Engineering, The Pennsylvania State University, University Park, PA 16802, United States; School of Environment, Beijing Key Laboratory for Emerging Organic Contaminants Control, Tsinghua University, Beijing 100084, China.
| | - Fred S Cannon
- Department of Civil and Environmental Engineering, The Pennsylvania State University, University Park, PA 16802, United States
| | - Pin Hou
- School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing 100083, China
| | - Tim Byrne
- Ingevity, 5255 Virginia Ave, North Charleston, SC 29406, United States
| | - Cesar Nieto-Delgado
- Environmental Science Division, Instituto Potosino de Investigación Científica y Tecnológica, IPICyT, Camino a la Presa San Jose 2055, San Luis Potosí, SLP 78216, Mexico
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Li C, Chen N, Zhao Y, Li R, Feng C. Polypyrrole-grafted peanut shell biological carbon as a potential sorbent for fluoride removal: Sorption capability and mechanism. CHEMOSPHERE 2016; 163:81-89. [PMID: 27521642 DOI: 10.1016/j.chemosphere.2016.08.016] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Revised: 07/22/2016] [Accepted: 08/02/2016] [Indexed: 06/06/2023]
Abstract
In this study, an effective defluoridation adsorbent was developed by depositing polypyrrole (PPy) on granular peanut shell biological carbon (BC) via in situ chemical oxidative polymerization. The variables of defluoridation process (i.e., adsorbent dosage, fluoride solution pH, and anionic interference) were tested. The mechanism was determined by isotherm and kinetic studies, Brunauer-Emmett-Teller (BET) method, scanning electronic microscopy (SEM), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared (FTIR) spectroscopy and automatic titration. The PPy-grafted BC (PPy/BC) composite performed commendably from pH 2.0 to 10.0, and exhibited high selectivity for fluoride in the presence of several co-existing anions. The experimental data were described well by a Langmuir isotherm curve, and the maximum adsorption capacity was 17.15 mg g(-1). Kinetic studies illustrated the adsorption process was accomplished via surface adsorption as well as by intraparticle diffusion. In addition, mesoporous diffusion was the rate-controlling step in intraparticle diffusion process. BET and SEM analysis revealed the sponge-like polymer adhered to the BC and plugged the pores. XPS, FTIR, and SEM confirmed that fluoride removal was accomplished via the replacement of doped ionizable chloride ions (Cl(-)) coupled with positively charged nitrogen (N(+)), computation of XPS data enabled the formulation of a three-layer-deep hypothesis for PPy.
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Affiliation(s)
- Chunlu Li
- School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing, 100083, China
| | - Nan Chen
- School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing, 100083, China; Key Laboratory of Groundwater Cycle and Environment Evolution (China University of Geosciences (Beijing)), Ministry of Education, Beijing, 100083, China.
| | - Yanan Zhao
- School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing, 100083, China
| | - Rui Li
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - Chuanping Feng
- School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing, 100083, China; Key Laboratory of Groundwater Cycle and Environment Evolution (China University of Geosciences (Beijing)), Ministry of Education, Beijing, 100083, China
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Chen J, Feng J, Yan W. Influence of metal oxides on the adsorption characteristics of PPy/metal oxides for Methylene Blue. J Colloid Interface Sci 2016; 475:26-35. [DOI: 10.1016/j.jcis.2016.04.017] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Revised: 04/09/2016] [Accepted: 04/12/2016] [Indexed: 10/21/2022]
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Hong S, Deng S, Yao X, Wang B, Wang Y, Huang J, Yu G. Bromate removal from water by polypyrrole tailored activated carbon. J Colloid Interface Sci 2016; 467:10-16. [DOI: 10.1016/j.jcis.2016.01.001] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 01/03/2016] [Indexed: 12/01/2022]
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Morsi RE, Elsalamony RA. Superabsorbent enhanced-catalytic core/shell nanocomposites hydrogels for efficient water decolorization. NEW J CHEM 2016. [DOI: 10.1039/c5nj02823j] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In-situ inverse-emulsion polymerization and crosslinking of acrylamide in presence of metal oxides nanoparticles producing core/shell hydrogel nanocomposites for water decolorization.
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Liu Q, Zhu J, Tan L, Jing X, Liu J, Song D, Zhang H, Li R, Emelchenko GA, Wang J. Polypyrrole/cobalt ferrite/multiwalled carbon nanotubes as an adsorbent for removing uranium ions from aqueous solutions. Dalton Trans 2016; 45:9166-73. [DOI: 10.1039/c6dt00912c] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel rod-like, dual-shell structural adsorbent of polypyrrole/cobalt ferrite/multiwalled carbon nanotubes (PPy/CoFe2O4/MWCNTs) was successfully synthesized by a hydrothermal method, which could easily separate uranium(vi) ions with an external magnetic field.
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12
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Huang Y, Li J, Chen X, Wang X. Applications of conjugated polymer based composites in wastewater purification. RSC Adv 2014. [DOI: 10.1039/c4ra11496e] [Citation(s) in RCA: 100] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
This review describes the application of conjugated polymer (polyaniline, polypyrrole, and polythiophene) based composites in wastewater purification.
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Affiliation(s)
- Yongshun Huang
- School of Environment and Chemical Engineering
- North China Electric Power University
- Beijing, P. R. China
- Department of Chemistry
- The University of Cincinnati
| | - Jiaxing Li
- School of Environment and Chemical Engineering
- North China Electric Power University
- Beijing, P. R. China
- Institute of Plasma Physics
- Chinese Academy of Sciences
| | | | - Xiangke Wang
- School of Environment and Chemical Engineering
- North China Electric Power University
- Beijing, P. R. China
- Faculty of Engineering
- King Abdulaziz University
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Hao L, Liu Q, Li X, Du Z, Wang P. A potentially low-cost modified sawdust (MSD) effective for rapid Cr(vi) and As(v) removal from water. RSC Adv 2014. [DOI: 10.1039/c4ra07395a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A potentially low-cost modified sawdust (MSD) was effective for the rapid removal of Cr(vi) and As(v) from water.
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Affiliation(s)
- Linlin Hao
- State Key Laboratory of Urban Water Resource and Environment
- School of Municipal and Environmental Engineering
- Harbin Institute of Technology
- Harbin 150090, P. R. China
| | - Qin Liu
- State Key Laboratory of Urban Water Resource and Environment
- School of Municipal and Environmental Engineering
- Harbin Institute of Technology
- Harbin 150090, P. R. China
| | - Xilan Li
- State Key Laboratory of Physical Chemistry of Solid Surfaces
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen 361005, P. R. China
| | - Zhaolin Du
- State Key Laboratory of Urban Water Resource and Environment
- School of Municipal and Environmental Engineering
- Harbin Institute of Technology
- Harbin 150090, P. R. China
| | - Peng Wang
- State Key Laboratory of Urban Water Resource and Environment
- School of Municipal and Environmental Engineering
- Harbin Institute of Technology
- Harbin 150090, P. R. China
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Li J, Feng J, Yan W. Synthesis of polypyrrole-modified TiO2composite adsorbent and its adsorption performance on acid Red G. J Appl Polym Sci 2012. [DOI: 10.1002/app.38525] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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