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Reznicek J, Bednarik V, Filip J. PERCHLORATE SENSING – CAN ELECTROCHEMISTRY MEET THE SENSITIVITY OF STANDARD METHODS? Electrochim Acta 2023. [DOI: 10.1016/j.electacta.2023.142027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
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2
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Alkhadra M, Su X, Suss ME, Tian H, Guyes EN, Shocron AN, Conforti KM, de Souza JP, Kim N, Tedesco M, Khoiruddin K, Wenten IG, Santiago JG, Hatton TA, Bazant MZ. Electrochemical Methods for Water Purification, Ion Separations, and Energy Conversion. Chem Rev 2022; 122:13547-13635. [PMID: 35904408 PMCID: PMC9413246 DOI: 10.1021/acs.chemrev.1c00396] [Citation(s) in RCA: 59] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Agricultural development, extensive industrialization, and rapid growth of the global population have inadvertently been accompanied by environmental pollution. Water pollution is exacerbated by the decreasing ability of traditional treatment methods to comply with tightening environmental standards. This review provides a comprehensive description of the principles and applications of electrochemical methods for water purification, ion separations, and energy conversion. Electrochemical methods have attractive features such as compact size, chemical selectivity, broad applicability, and reduced generation of secondary waste. Perhaps the greatest advantage of electrochemical methods, however, is that they remove contaminants directly from the water, while other technologies extract the water from the contaminants, which enables efficient removal of trace pollutants. The review begins with an overview of conventional electrochemical methods, which drive chemical or physical transformations via Faradaic reactions at electrodes, and proceeds to a detailed examination of the two primary mechanisms by which contaminants are separated in nondestructive electrochemical processes, namely electrokinetics and electrosorption. In these sections, special attention is given to emerging methods, such as shock electrodialysis and Faradaic electrosorption. Given the importance of generating clean, renewable energy, which may sometimes be combined with water purification, the review also discusses inverse methods of electrochemical energy conversion based on reverse electrosorption, electrowetting, and electrokinetic phenomena. The review concludes with a discussion of technology comparisons, remaining challenges, and potential innovations for the field such as process intensification and technoeconomic optimization.
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Affiliation(s)
- Mohammad
A. Alkhadra
- Department
of Chemical Engineering, Massachusetts Institute
of Technology, Cambridge, Massachusetts 02139, United States
| | - Xiao Su
- Department
of Chemical and Biomolecular Engineering, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Matthew E. Suss
- Faculty
of Mechanical Engineering, Technion—Israel
Institute of Technology, Haifa 3200003, Israel,Wolfson
Department of Chemical Engineering, Technion—Israel
Institute of Technology, Haifa 3200003, Israel,Nancy
and Stephen Grand Technion Energy Program, Technion—Israel Institute of Technology, Haifa 3200003, Israel
| | - Huanhuan Tian
- Department
of Chemical Engineering, Massachusetts Institute
of Technology, Cambridge, Massachusetts 02139, United States
| | - Eric N. Guyes
- Faculty
of Mechanical Engineering, Technion—Israel
Institute of Technology, Haifa 3200003, Israel
| | - Amit N. Shocron
- Faculty
of Mechanical Engineering, Technion—Israel
Institute of Technology, Haifa 3200003, Israel
| | - Kameron M. Conforti
- Department
of Chemical Engineering, Massachusetts Institute
of Technology, Cambridge, Massachusetts 02139, United States
| | - J. Pedro de Souza
- Department
of Chemical Engineering, Massachusetts Institute
of Technology, Cambridge, Massachusetts 02139, United States
| | - Nayeong Kim
- Department
of Chemical and Biomolecular Engineering, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Michele Tedesco
- European
Centre of Excellence for Sustainable Water Technology, Wetsus, Oostergoweg 9, 8911 MA Leeuwarden, The Netherlands
| | - Khoiruddin Khoiruddin
- Department
of Chemical Engineering, Institut Teknologi
Bandung, Jl. Ganesha no. 10, Bandung, 40132, Indonesia,Research
Center for Nanosciences and Nanotechnology, Institut Teknologi Bandung, Jl. Ganesha no. 10, Bandung 40132, Indonesia
| | - I Gede Wenten
- Department
of Chemical Engineering, Institut Teknologi
Bandung, Jl. Ganesha no. 10, Bandung, 40132, Indonesia,Research
Center for Nanosciences and Nanotechnology, Institut Teknologi Bandung, Jl. Ganesha no. 10, Bandung 40132, Indonesia
| | - Juan G. Santiago
- Department
of Mechanical Engineering, Stanford University, Stanford, California 94305, United States
| | - T. Alan Hatton
- Department
of Chemical Engineering, Massachusetts Institute
of Technology, Cambridge, Massachusetts 02139, United States
| | - Martin Z. Bazant
- Department
of Chemical Engineering, Massachusetts Institute
of Technology, Cambridge, Massachusetts 02139, United States,Department
of Mathematics, Massachusetts Institute
of Technology, Cambridge, Massachusetts 02139, United States,
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3
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Shen Y, Chen N, Feng Z, Feng C, Deng Y. Treatment of nitrate containing wastewater by adsorption process using polypyrrole-modified plastic-carbon: Characteristic and mechanism. CHEMOSPHERE 2022; 297:134107. [PMID: 35271890 DOI: 10.1016/j.chemosphere.2022.134107] [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: 11/20/2021] [Revised: 02/15/2022] [Accepted: 02/23/2022] [Indexed: 06/14/2023]
Abstract
Polypyrrole-modified plastic-carbon (PET-PPy) composite was prepared by using high porosity plastic-carbon materials and a special doping mechanism of polypyrrole to remove nitrate from water to achieve waste recycling. As a result, PET-PPy-500 showed remarkable nitrate adsorption in both acidic and alkaline wastewater. The pseudo-second-order kinetic and Langmuir isotherm models were fit for the nitrate adsorption by PET-PPy-500, and the maximum adsorption capacity predicted by the Langmuir model was 10.04 mg NO3-N/g (45.18 mg NO3-/g) at 30 °C. The ion exchange and electrostatic attraction were the main mechanisms of removing NO3- by PET-PPy-500, which was demonstrated by the interface characterization and theoretical calculation. The doped ions (Cl-) and/or other anions produced by charge transfer interaction were the main exchange ions in the process of NO3- adsorption. The main binding sites in the electrostatic adsorption process were nitrogen-containing functional groups, which can be confirmed by the results of XPS and density functional theory (DFT). Furthermore, DFT results also showed that the adsorption of nitrate by PET-PPy was a spontaneous exothermic process, and the adsorption energy at the nitrogen site was the lowest. The findings of this study provide a feasible strategy for the advanced treatment of nitrate containing wastewater.
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Affiliation(s)
- Yuanyuan Shen
- School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, China
| | - Nan Chen
- School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, China.
| | - Zhengyuan Feng
- School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, China
| | - Chuanping Feng
- School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, China
| | - Yang Deng
- School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, China
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4
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Song X, Niu J, Yan W, Li X, Hao X, Guan G, Wang Z. An electroactive BiOBr@PPy hybrid film with synergistic effect for electrochemically switched capture of bromine ions from aqueous solutions. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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5
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Huyan C, Ding S, Lyu Z, Engelhard MH, Tian Y, Du D, Liu D, Lin Y. Selective Removal of Perfluorobutyric Acid Using an Electroactive Ion Exchanger Based on Polypyrrole@Iron Oxide on Carbon Cloth. ACS APPLIED MATERIALS & INTERFACES 2021; 13:48500-48507. [PMID: 34617724 DOI: 10.1021/acsami.1c09374] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Perfluorobutyric acid (PFBA) is one type of perfluoroalkyl and polyfluoroalkyl substances (PFASs) and is widely used as an industrial compound. The removal of PFBA has attracted considerable scientific interests in recent decades because it causes environmental pollution and human diseases. Currently, the adsorption method has been used commonly to remove PFASs from wastewater. However, it is usually limited by the inevitable "secondary waste" produced in this treatment process. In this work, PFBA can be effectively removed by synergistic electrical switching ion exchange (ESIX) and a new type of nanostructured ion exchanger. Herein, the nanostructured ion exchanger has been designed and synthesized by coating a polypyrrole (PPy)@Fe2O3 nanoneedle on carbon cloth (PPy@Fe2O3 NN-CC). Results show that the PPy@Fe2O3 NN-CC nanocomposite enhances ion exchange speed and efficiency, which ensures its high adsorption capacity and rapid regeneration property, thereby reducing secondary waste. Moreover, ESIX based on the PPy@Fe2O3 NN-CC nanocomposite has high selectivity for adsorption of PFBA over other common anions in water, such as Cl-, SO42-, and NO3-.
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Affiliation(s)
- Chenxi Huyan
- School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States
| | - Shichao Ding
- School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States
| | - Zhaoyuan Lyu
- School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States
| | - Mark H Engelhard
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Yuhao Tian
- Department of Civil and Environmental Engineering, Washington State University, Pullman, Washington 99164, United States
| | - Dan Du
- School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States
| | - Dong Liu
- School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States
| | - Yuehe Lin
- School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States
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7
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Performance of ion intercalation materials in capacitive deionization/electrochemical deionization: A review. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.114588] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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8
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Li Q, Zheng Y, Xiao D, Or T, Gao R, Li Z, Feng M, Shui L, Zhou G, Wang X, Chen Z. Faradaic Electrodes Open a New Era for Capacitive Deionization. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 7:2002213. [PMID: 33240769 PMCID: PMC7675053 DOI: 10.1002/advs.202002213] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 07/30/2020] [Indexed: 05/02/2023]
Abstract
Capacitive deionization (CDI) is an emerging desalination technology for effective removal of ionic species from aqueous solutions. Compared to conventional CDI, which is based on carbon electrodes and struggles with high salinity streams due to a limited salt removal capacity by ion electrosorption and excessive co-ion expulsion, the emerging Faradaic electrodes provide unique opportunities to upgrade the CDI performance, i.e., achieving much higher salt removal capacities and energy-efficient desalination for high salinity streams, due to the Faradaic reaction for ion capture. This article presents a comprehensive overview on the current developments of Faradaic electrode materials for CDI. Here, the fundamentals of Faradaic electrode-based CDI are first introduced in detail, including novel CDI cell architectures, key CDI performance metrics, ion capture mechanisms, and the design principles of Faradaic electrode materials. Three main categories of Faradaic electrode materials are summarized and discussed regarding their crystal structure, physicochemical characteristics, and desalination performance. In particular, the ion capture mechanisms in Faradaic electrode materials are highlighted to obtain a better understanding of the CDI process. Moreover, novel tailored applications, including selective ion removal and contaminant removal, are specifically introduced. Finally, the remaining challenges and research directions are also outlined to provide guidelines for future research.
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Affiliation(s)
- Qian Li
- South China Academy of Advanced Optoelectronics and International Academy of Optoelectronics at ZhaoqingSouth China Normal UniversityGuangdong510631P. R. China
- Department of Chemical EngineeringWaterloo Institute of NanotechnologyUniversity of Waterloo200 University Ave WestWaterlooOntarioN2L 3G1Canada
| | - Yun Zheng
- Department of Chemical EngineeringWaterloo Institute of NanotechnologyUniversity of Waterloo200 University Ave WestWaterlooOntarioN2L 3G1Canada
| | - Dengji Xiao
- Department of Chemical EngineeringWaterloo Institute of NanotechnologyUniversity of Waterloo200 University Ave WestWaterlooOntarioN2L 3G1Canada
| | - Tyler Or
- Department of Chemical EngineeringWaterloo Institute of NanotechnologyUniversity of Waterloo200 University Ave WestWaterlooOntarioN2L 3G1Canada
| | - Rui Gao
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of EducationJilin Normal UniversityChangchun130103P. R. China
| | - Zhaoqiang Li
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of EducationJilin Normal UniversityChangchun130103P. R. China
| | - Ming Feng
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of EducationJilin Normal UniversityChangchun130103P. R. China
| | - Lingling Shui
- South China Academy of Advanced Optoelectronics and International Academy of Optoelectronics at ZhaoqingSouth China Normal UniversityGuangdong510631P. R. China
| | - Guofu Zhou
- South China Academy of Advanced Optoelectronics and International Academy of Optoelectronics at ZhaoqingSouth China Normal UniversityGuangdong510631P. R. China
| | - Xin Wang
- South China Academy of Advanced Optoelectronics and International Academy of Optoelectronics at ZhaoqingSouth China Normal UniversityGuangdong510631P. R. China
| | - Zhongwei Chen
- Department of Chemical EngineeringWaterloo Institute of NanotechnologyUniversity of Waterloo200 University Ave WestWaterlooOntarioN2L 3G1Canada
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9
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Opportunities for coupled electrochemical and ion-exchange technologies to remove recalcitrant micropollutants in water. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.116522] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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10
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Zhou Y, Hu C, Liu H, Qu J. Potassium-Ion Recovery with a Polypyrrole Membrane Electrode in Novel Redox Transistor Electrodialysis. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:4592-4600. [PMID: 32129612 DOI: 10.1021/acs.est.9b06665] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Conductive polymers are potential selective ion-exchange membrane materials. In this study, a novel redox transistor electrodialyzer consisting of two chambers separated by a polypyrrole (PPy) membrane electrode was designed for potassium ion (K+) recovery from water. The PPy membrane electrode was fabricated by depositing PPy on a stainless-steel wire mesh through the electrochemical method. Based on ion-exchange results, the PPy membrane exhibited electrodialysis selectivity for K+ in the presence of Na+, with a K+/Na+ separation factor of 2.10. Adding modified active carbon to PPy provided a larger electroactive area and better conductivity, resulting in higher ion-exchange capacity (1.04 mmol/L) compared with the original PPy membrane. Even for seawater containing a very low concentration of K+ (16.18 mmol/L), the PPy membrane still demonstrated K+ selectivity (separation factor of 2.18). Energy consumption in the electrodialyzer was 3.80 kW h/kg K, which was 37% lower than that in traditional electrodialysis. Furthermore, the PPy membrane exhibited antiscaling/fouling ability with the help of a pulse voltage. These findings highlight a novel redox transistor electrodialysis process with great potential application in K+ recovery from wastewater with relatively low energy consumption.
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Affiliation(s)
- Yi Zhou
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chengzhi Hu
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Huijuan Liu
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Jiuhui Qu
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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11
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Zhang E, Liu W, Liu X, Zhao Z, Yang Y. Pulse electrochemical synthesis of polypyrrole/graphene oxide@graphene aerogel for high-performance supercapacitor. RSC Adv 2020; 10:11966-11970. [PMID: 35496620 PMCID: PMC9050804 DOI: 10.1039/d0ra01181a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Accepted: 03/10/2020] [Indexed: 11/21/2022] Open
Abstract
A novel electroactive polypyrrole/graphene oxide@graphene aerogel (PGO@GA) was synthesized for the first time by pulse electropolymerization. The off-time in this technique allows polypyrrole (PPy) to go through a more stable structural arrangement, meanwhile its electronic transmission performance is enhanced by immobilizing graphene oxide between PPy chains. Moreover, graphene aerogel provides a three-dimensional structure with high conductivity to protect PPy from swelling and shrinking during the capacitive testing. Under these synergistic effects, PGO@GA presents exceptional capacitive performances including high specific capacitance (625 F g−1 at 1 A g−1), excellent rate capability (keeping 478 F g−1 at 15 A g−1 with retention rate of 76.5%), and excellent cycling life (retaining 85.7% of its initial value when cycling 5000 times at 10 A g−1). Therefore, the strategy adopted by this research provides a good reference for preparing other PPy-based electrode materials applied in the fields of catalysis, sensing, adsorption and energy storage. The as-prepared polypyrrole/graphene oxide@graphene aerogel by pulse electropolymerization technique presents excellent capacitive performance.![]()
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Affiliation(s)
- Erhui Zhang
- Key Lab of Interface Science and Engineering in Advanced Materials (Taiyuan University of Technology), Ministry of Education Taiyuan 030024 China .,College of Chemistry and Chemical Engineering, Taiyuan University of Technology Taiyuan 030024 China
| | - Weifeng Liu
- Key Lab of Interface Science and Engineering in Advanced Materials (Taiyuan University of Technology), Ministry of Education Taiyuan 030024 China .,Institute of New Carbon Materials, Taiyuan University of Technology Taiyuan 030024 China
| | - Xuguang Liu
- Key Lab of Interface Science and Engineering in Advanced Materials (Taiyuan University of Technology), Ministry of Education Taiyuan 030024 China .,Institute of New Carbon Materials, Taiyuan University of Technology Taiyuan 030024 China
| | - Zongbin Zhao
- Carbon Research Laboratory, Liaoning Key Lab for Energy Materials and Chemical Engineering, State Key Lab of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology Dalian 116023 China
| | - Yongzhen Yang
- Key Lab of Interface Science and Engineering in Advanced Materials (Taiyuan University of Technology), Ministry of Education Taiyuan 030024 China
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12
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Highly efficient defluoridation using a porous MWCNT@NiMn-LDH composites based on ion transport of EDL coupled with ligand exchange mechanism. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.04.052] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Shen Q, Du X, Gao F, Chang L, Zhang Z, Ma X, Hao X, Tang K. BiOCl-Coated Electroactive Film for Potential-Triggered Selective Removal of Cesium Ions from Simulated Wastewater. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b01732] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Qianyao Shen
- Department of Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Xiao Du
- Department of Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Fengfeng Gao
- Department of Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Lutong Chang
- Department of Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Zhonglin Zhang
- Department of Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Xuli Ma
- Department of Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Xiaogang Hao
- Department of Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Keyong Tang
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, P. R. China
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Guo Z, Shams M, Zhu C, Shi Q, Tian Y, Engelhard MH, Du D, Chowdhury I, Lin Y. Electrically Switched Ion Exchange Based on Carbon-Polypyrrole Composite Smart Materials for the Removal of ReO 4- from Aqueous Solutions. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:2612-2617. [PMID: 30672699 DOI: 10.1021/acs.est.8b04789] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
A simple and rapid process of ReO4- (as a surrogate of TcO4-) removal from aqueous solutions based on the electrically switched ion exchange (ESIX) method has been demonstrated in this work. Activated carbon-Polypyrrole (AC-PPy) was synthesized from activated carbon and pyrrole by electrodeposition method which was served as an electrically switched ion exchanger for ReO4- removal. The characterization results show that the AC-PPy composite exhibited an excellent loading capacity and a high stability for ions uptake and release. Chronoamperometric studies show that the ESIX treatment could be completed within 60 s, demonstrating the rapid uptake and release of ions. Uptake and release of ReO4- was verified by electrochemical quartz crystal microbalance with dissipation shift (EQCMD) studies. By modulating the electrochemical potential of the AC-PPy, the uptake and release of ReO4- ions can be controlled. Similar trends of uptake and release of ReO4- were observed in cyclic voltammetry (-0.4 to 0.8 V) for five cycles with the EQCMD. X-ray photoelectron spectroscopy (XPS) confirmed the process of ReO4- removal in the AC-PPy composite. Conclusively, the smart material shows excellent efficiency and selectivity for the removal of ReO4- from aqueous solutions.
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Affiliation(s)
- Zizhang Guo
- School of Mechanical and Materials Engineering , Washington State University , Pullman , Washington 99164-2920 , United States
- School of Environmental Science and Engineering, Shandong Key Laboratory of Water Pollution Control and Resource Reuse , Shandong University , Jinan 250100 , China
| | - Mehnaz Shams
- Department of Civil and Environmental Engineering , Washington State University , Pullman , Washington 99164 , United States
| | - Chengzhou Zhu
- School of Mechanical and Materials Engineering , Washington State University , Pullman , Washington 99164-2920 , United States
| | - Qiurong Shi
- School of Mechanical and Materials Engineering , Washington State University , Pullman , Washington 99164-2920 , United States
| | - Yuhao Tian
- Department of Civil and Environmental Engineering , Washington State University , Pullman , Washington 99164 , United States
| | - Mark H Engelhard
- Environmental Molecular Sciences Laboratory , Pacific Northwest National Laboratory , Richland , Washington 99352 , United States
| | - Dan Du
- School of Mechanical and Materials Engineering , Washington State University , Pullman , Washington 99164-2920 , United States
| | - Indranil Chowdhury
- Department of Civil and Environmental Engineering , Washington State University , Pullman , Washington 99164 , United States
| | - Yuehe Lin
- School of Mechanical and Materials Engineering , Washington State University , Pullman , Washington 99164-2920 , United States
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15
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Chen J, Yu M, Wang C, Feng J, Yan W. Insight into the Synergistic Effect on Selective Adsorption for Heavy Metal Ions by a Polypyrrole/TiO 2 Composite. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:10187-10196. [PMID: 30074798 DOI: 10.1021/acs.langmuir.8b01987] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Polymer/metal oxide composites are promising candidates for the treatment of water pollution. Adsorption selectivity as well as a large adsorption capacity are two key factors for treating wastewater containing multiple ions. Herein, a PPy+/TiO2(O-) composite with a heterojunction structure was first discovered to have novel selectivity toward heavy metal ions. An interesting self-doping nature of TiO2(O-) together with SO42- for PPy+ was reported. This interesting structure contributed to an impressive selective adsorption capability with an ascending order of Zn2+ > Pb2+ ≫ Cu2+ in a ternary ion system, where the adsorption for Cu2+ could be almost suppressed. Through the designed adsorption experiments and characterization techniques including Fourier transform infrared, thermogravimetric analysis, and X-ray photoelectron spectroscopy, a universal synergistic mechanism for PPy+/TiO2(O-) composite was first proposed and confirmed. The doping and dedoping of metal oxide (dopant) from the polymer dictates the adsorption selectivity, where the selectivity is determined by the interaction between TiO2 and heavy metal ions. This work may provide some useful guidelines for designing adsorbents with selectivity toward specific heavy metal ions.
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Affiliation(s)
- Jie Chen
- Department of Environmental Science and Engineering, State Key Laboratory of Multiphase Flow in Power Engineering , Xi'an Jiaotong University , Xi'an 710049 , P. R. China
| | - Mengting Yu
- Department of Environmental Science and Engineering, State Key Laboratory of Multiphase Flow in Power Engineering , Xi'an Jiaotong University , Xi'an 710049 , P. R. China
| | - Caiyun Wang
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, AIIM Facility , University of Wollongong , North Wollongong , NSW 2500 , Australia
| | - Jiangtao Feng
- Department of Environmental Science and Engineering, State Key Laboratory of Multiphase Flow in Power Engineering , Xi'an Jiaotong University , Xi'an 710049 , P. R. China
| | - Wei Yan
- Department of Environmental Science and Engineering, State Key Laboratory of Multiphase Flow in Power Engineering , Xi'an Jiaotong University , Xi'an 710049 , P. R. China
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16
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Yang Y, Du X, An X, Ding S, Liu F, Zhang Z, Ma X, Hao X, Guan G, Zhang H. Potential-induced reversible uptake/release of perchlorate from wastewater by polypyrrole@CoNi-layered double hydroxide modified electrode with proton-ligand effect. J Colloid Interface Sci 2018; 523:159-168. [DOI: 10.1016/j.jcis.2018.03.098] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 03/26/2018] [Accepted: 03/28/2018] [Indexed: 11/27/2022]
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17
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Du X, Zhang D, Ma X, Qiao W, Wang Z, Hao X, Guan G. Electrochemical redox induced rapid uptake/release of Pb(II) ions with high selectivity using a novel porous electroactive HZSM-5@PANI/PSS composite film. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.06.025] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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18
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Nezakati T, Seifalian A, Tan A, Seifalian AM. Conductive Polymers: Opportunities and Challenges in Biomedical Applications. Chem Rev 2018; 118:6766-6843. [DOI: 10.1021/acs.chemrev.6b00275] [Citation(s) in RCA: 354] [Impact Index Per Article: 59.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Toktam Nezakati
- Google Inc.., Mountain View, California 94043, United States
- Centre for Nanotechnology and Regenerative Medicine, Division of Surgery and Interventional Science, University College London, London NW3 2QG, United Kingdom
| | - Amelia Seifalian
- UCL Medical School, University College London, London WC1E 6BT, United Kingdom
| | - Aaron Tan
- UCL Medical School, University College London, London WC1E 6BT, United Kingdom
| | - Alexander M. Seifalian
- NanoRegMed Ltd. (Nanotechnology and Regenerative Medicine Commercialization Centre), The London Innovation BioScience Centre, London NW1 0NH, United Kingdom
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19
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Polypyrrole-Protected Magnetic Nanoparticles as an Excellent Sorbent for Effective Removal of Cr(VI) and Ni(II) from Effluent Water: Kinetic Studies and Error Analysis. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2018. [DOI: 10.1007/s13369-018-3421-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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20
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Zhang B, Du X, Hao X, Gao F, Zhang D, Liu C, Guan G. A novel potential-triggered SBA-15/PANI/PSS composite film for selective removal of lead ions from wastewater. J Solid State Electrochem 2018. [DOI: 10.1007/s10008-018-3966-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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21
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Ibanez JG, Rincón ME, Gutierrez-Granados S, Chahma M, Jaramillo-Quintero OA, Frontana-Uribe BA. Conducting Polymers in the Fields of Energy, Environmental Remediation, and Chemical–Chiral Sensors. Chem Rev 2018; 118:4731-4816. [DOI: 10.1021/acs.chemrev.7b00482] [Citation(s) in RCA: 264] [Impact Index Per Article: 44.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Jorge G. Ibanez
- Departamento de Ingeniería y Ciencias Químicas, Universidad Iberoamericana, Prolongación Paseo de la Reforma 880, 01219 Ciudad de México, Mexico
| | - Marina. E. Rincón
- Instituto de Energías Renovables, Universidad Nacional Autónoma de México, Apartado Postal 34, 62580, Temixco, MOR, Mexico
| | - Silvia Gutierrez-Granados
- Departamento de Química, DCNyE, Campus Guanajuato, Universidad de Guanajuato, Cerro de la Venada S/N, Pueblito
de Rocha, 36080 Guanajuato, GTO Mexico
| | - M’hamed Chahma
- Laurentian University, Department of Chemistry & Biochemistry, Sudbury, ON P3E2C6, Canada
| | - Oscar A. Jaramillo-Quintero
- CONACYT-Instituto de Energías Renovables, Universidad Nacional Autónoma de México, Apartado Postal 34, 62580 Temixco, MOR, Mexico
| | - Bernardo A. Frontana-Uribe
- Centro Conjunto de Investigación en Química Sustentable, UAEM-UNAM, Km 14.5 Carretera Toluca-Ixtlahuaca, Toluca 50200, Estado de México Mexico
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito
exterior Ciudad Universitaria, 04510 Ciudad de México, Mexico
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22
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Xing J, Zhu C, Chowdhury I, Tian Y, Du D, Lin Y. Electrically Switched Ion Exchange Based on Polypyrrole and Carbon Nanotube Nanocomposite for the Removal of Chromium(VI) from Aqueous Solution. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.7b03520] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Jianyu Xing
- School
of Mechanical and Material Engineering, Washington State University, Pullman, Washington 99164, United States
- School
of Environmental Science and Engineering, Chang’an University, Xi’an, Shaanxi 710054, China
| | - Chengzhou Zhu
- School
of Mechanical and Material Engineering, Washington State University, Pullman, Washington 99164, United States
| | - Indranil Chowdhury
- Department
of Civil and Environmental Engineering, Washington State University, Pullman, Washington 99164, United States
| | - Yuhao Tian
- Department
of Civil and Environmental Engineering, Washington State University, Pullman, Washington 99164, United States
| | - Dan Du
- School
of Mechanical and Material Engineering, Washington State University, Pullman, Washington 99164, United States
| | - Yuehe Lin
- School
of Mechanical and Material Engineering, Washington State University, Pullman, Washington 99164, United States
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23
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Du X, Ma X, Zhang P, Zheng J, Wang Z, Gao F, Hao X, Liu S, Guan G. A novel electric-field-accelerated ion-sieve membrane system coupling potential-oscillation for alkali metal ions separation. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.11.118] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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24
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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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25
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Hillman AR, Ryder KS, Ismail HK, Unal A, Voorhaar A. Fundamental aspects of electrochemically controlled wetting of nanoscale composite materials. Faraday Discuss 2017; 199:75-99. [PMID: 28540379 DOI: 10.1039/c7fd00060j] [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]
Abstract
Electroactive films based on conducting polymers have numerous potential applications, but practical devices frequently require a combination of properties not met by a single component. This has prompted an extension to composite materials, notably those in which particulates are immobilised within a polymer film. Irrespective of the polymer and the intended application, film wetting is important: by various means, it facilitates transport processes - of electronic charge, charge-balancing counter ions ("dopant") and analyte/reactant molecules - and motion of polymer segments. While film solvent content and transfer have been widely studied for pristine polymer films exposed to molecular solvents, extension to non-conventional solvents (such as ionic liquids) or to composite films has been given much less attention. Here we consider such cases based on polyaniline films. We explore two factors, the nature of the electrolyte (solvent and film-permeating ions) and the effect of introducing particulate species into the film. In the first instance, we compare film behaviours when exposed to a conventional protic solvent (water) with an aprotic ionic liquid (Ethaline) and the intermediate case of a protic ionic liquid (Oxaline). Secondly, we explore the effect of inclusion of physically diverse particulates: multi-walled carbon nanotubes, graphite or molybdenum dioxide. We use electrochemistry to control and monitor the film redox state and change therein, and acoustic wave measurements to diagnose rheologically vs. gravimetrically determined response. The outcomes provide insights of relevance to future practical applications, including charge/discharge rates and cycle life for energy storage devices, "salt" transfer in water purification technologies, and the extent of film "memory" of previous environments when sequentially exposed to different media.
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Affiliation(s)
- A Robert Hillman
- Materials Centre, Department of Chemistry, University of Leicester, Leicester LE1 7RH, UK.
| | - Karl S Ryder
- Materials Centre, Department of Chemistry, University of Leicester, Leicester LE1 7RH, UK.
| | - Hani K Ismail
- Materials Centre, Department of Chemistry, University of Leicester, Leicester LE1 7RH, UK. and Chemistry Department, University of Koya, Erbil, Iraq
| | - Asuman Unal
- Materials Centre, Department of Chemistry, University of Leicester, Leicester LE1 7RH, UK.
| | - Annelies Voorhaar
- Materials Centre, Department of Chemistry, University of Leicester, Leicester LE1 7RH, UK.
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26
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Su X, Hatton TA. Redox-electrodes for selective electrochemical separations. Adv Colloid Interface Sci 2017; 244:6-20. [PMID: 27712721 DOI: 10.1016/j.cis.2016.09.001] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Revised: 09/01/2016] [Accepted: 09/05/2016] [Indexed: 11/18/2022]
Abstract
Redox-active materials hold great promise as platforms for selective liquid-phase separations. In contrast to capacitive electrodes that rely purely on double-layer charge for deionization, redox-modified electrodes can be used to control Faradaic reactions at the interface to selectively bind various charged and uncharged molecules, thus modulating surface interactions through electrochemical potential solely. These electrodes can be composed of a range of functional materials, from organic and organometallic polymers to inorganic crystalline compounds, each relying on its own distinct ion-exchange process. Often, redox electrochemical systems can serve as pseudocapacitors or batteries, thus offering an advantageous combination of adsorption selectivity and energy storage/recovery. This review summarizes redox-interfaces for electrosorption and release, outlines methods for preparation and synthesis, discusses the diverse mechanisms for interaction, and gives a perspective on the future of redox-mediated separations.
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Affiliation(s)
- Xiao Su
- Department of Chemical Engineering, Massachusetts Institute of Technology, MA, United States
| | - T Alan Hatton
- Department of Chemical Engineering, Massachusetts Institute of Technology, MA, United States.
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27
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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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28
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Choi D, Zhu C, Fu S, Du D, Engelhard MH, Lin Y. Electrochemically Controlled Ion‐exchange Property of Carbon Nanotubes/Polypyrrole Nanocomposite in Various Electrolyte Solutions. ELECTROANAL 2016. [DOI: 10.1002/elan.201600466] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Daiwon Choi
- Pacific Northwest National Laboratory 902 Battelle Boulevard P.O. Box 999 Richland WA 99352 USA
| | - Chengzhou Zhu
- School of Mechanical and Materials Engineering Washington State University, Pullman Washington 99164-2920 United States
| | - Shaofang Fu
- School of Mechanical and Materials Engineering Washington State University, Pullman Washington 99164-2920 United States
| | - Dan Du
- School of Mechanical and Materials Engineering Washington State University, Pullman Washington 99164-2920 United States
| | - Mark H. Engelhard
- Pacific Northwest National Laboratory 902 Battelle Boulevard P.O. Box 999 Richland WA 99352 USA
| | - Yuehe Lin
- Pacific Northwest National Laboratory 902 Battelle Boulevard P.O. Box 999 Richland WA 99352 USA
- School of Mechanical and Materials Engineering Washington State University, Pullman Washington 99164-2920 United States
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29
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Preparation and Characterization of Polymer-Grafted Montmorillonite-Lignocellulose Nanocomposites by In Situ Intercalative Polymerization. ACTA ACUST UNITED AC 2016. [DOI: 10.1155/2016/4137398] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Lignocellulose-clay nanocomposites were synthesized using an in situ intercalative polymerization method at 60°C and a pressure of 1 atm. The ratio of the montmorillonite clay to the lignocellulose ranged from 1 : 9 to 1 : 1 (MMT clay to lignocelluloses, wt%). The adsorbent materials were characterized by Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), transmission electron microscopy (TEM), and X-ray powder diffraction (XRD). FTIR results showed that the polymers were covalently attached to the nanoclay and the lignocellulose in the nanocomposites. Both TEM and XRD analysis showed that the morphology of the materials ranged from phase-separated to intercalated nanocomposite adsorbents. Improved thermal stability, attributable to the presence of nanoclay, was observed for all the nanocomposites. The nanocomposite materials prepared can potentially be used as adsorbents for the removal of pollutants in water treatment and purification.
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30
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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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31
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Bhaumik M, Agarwal S, Gupta VK, Maity A. Enhanced removal of Cr(VI) from aqueous solutions using polypyrrole wrapped oxidized MWCNTs nanocomposites adsorbent. J Colloid Interface Sci 2016; 470:257-267. [PMID: 26962976 DOI: 10.1016/j.jcis.2016.02.054] [Citation(s) in RCA: 110] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Revised: 02/22/2016] [Accepted: 02/22/2016] [Indexed: 10/22/2022]
Abstract
Polypyrrole wrapped oxidized multiwalled carbon nanotubes nanocomposites (PPy/OMWCNTs NCs) were prepared via in situ chemical polymerization of pyrrole (Py) monomer in the presence of OMWCNTs using FeCl3 as oxidant for the effective removal of hexavalent chromium [Cr(VI)]. The as-prepared PPy/OMWCNTs NCs were characterized by FE-SEM, HR-TEM, ATR-FTIR, XRD, XPS and BET method. Characterization results suggested that PPy was uniformly covered on the OMWCNTs surface and resulted in enhanced specific surface area. Adsorption experiments were carried out in batch sorption mode to investigate the effect of pH, dose of adsorbent, contact time, concentration of Cr(VI) and temperature. The adsorption of Cr(VI) on the nanocomposite surface was highly pH dependent and the kinetics of the adsorption followed the pseudo-second-order model. The adsorption isotherm data were in good conformity with the Langmuir isothermal model. The maximum adsorption capacity of the PPy/OMWCNTs NCs for Cr(VI) was 294mg/g at 25°C. The calculated values of the thermodynamic parameters such as ΔG(0) (-0.237kJ/mol), ΔH(0) (13.237kJ/mol) and ΔS(0) (0.0452kJ/mol/K) revealed that the adsorption process is spontaneous, endothermic and marked with an increase in randomness at the solid-liquid interface. The presence of co-existing ions slightly affected the Cr(VI) removal efficiency of the PPy/OMWCNTs.
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Affiliation(s)
- Madhumita Bhaumik
- Department of Applied Chemistry, University of Johannesburg, Johannesburg, South Africa
| | - Shilpi Agarwal
- Department of Applied Chemistry, University of Johannesburg, Johannesburg, South Africa
| | - Vinod Kumar Gupta
- Department of Applied Chemistry, University of Johannesburg, Johannesburg, South Africa.
| | - Arjun Maity
- Department of Applied Chemistry, University of Johannesburg, Johannesburg, South Africa; DST/CSIR National Centre for Nanostructured Materials, Materials Science and Manufacturing, Council for Scientific and Industrial Research (CSIR), Pretoria, South Africa.
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32
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Asiabi H, Yamini Y, Seidi S, Esrafili A, Rezaei F. Electroplating of nanostructured polyaniline–polypyrrole composite coating in a stainless-steel tube for on-line in-tube solid phase microextraction. J Chromatogr A 2015; 1397:19-26. [DOI: 10.1016/j.chroma.2015.04.015] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Revised: 04/03/2015] [Accepted: 04/07/2015] [Indexed: 10/23/2022]
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33
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Dai J, Tao Y, Gu X, Liu Z, Kong Y, Liu W, Ma J, Wei Y. Electrically controllable perchlorate removal based on poly(aniline-co-o
-aminophenol) doped with p
-toluene sulfonate. J Appl Polym Sci 2015. [DOI: 10.1002/app.41895] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jiangying Dai
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology; School of Petrochemical Engineering; Changzhou University; Changzhou 213164 China
| | - Yongxin Tao
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology; School of Petrochemical Engineering; Changzhou University; Changzhou 213164 China
| | - Xiaogang Gu
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology; School of Petrochemical Engineering; Changzhou University; Changzhou 213164 China
| | - Zhong Liu
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology; School of Petrochemical Engineering; Changzhou University; Changzhou 213164 China
| | - Yong Kong
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology; School of Petrochemical Engineering; Changzhou University; Changzhou 213164 China
| | - Wenjie Liu
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology; School of Petrochemical Engineering; Changzhou University; Changzhou 213164 China
| | - Jianfeng Ma
- School of Environmental and Safety Engineering; Changzhou University; Changzhou 213164 China
| | - Yong Wei
- School of Environmental and Safety Engineering; Changzhou University; Changzhou 213164 China
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34
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Feng J, Zhang Q, Wang J, Yang H, Xu H, Yan W. Application of chemically synthesized polypyrrole with hydro-sponge characteristic as electrode in water desalination. RSC Adv 2015. [DOI: 10.1039/c5ra09062h] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
The bulk polypyrrole samples with excellent sponge property were prepared by chemical approach and performed wonderful desalination effect when they were processed into electrodes and applied to remove sodium ions by the electrochemical approach.
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Affiliation(s)
- Jiangtao Feng
- Department of Environmental Science and Engineering
- Xi'an Jiaotong University
- Xi'an 710049
- China
| | - Qian Zhang
- Department of Environmental Science and Engineering
- Xi'an Jiaotong University
- Xi'an 710049
- China
| | - Jiajing Wang
- Department of Environmental Science and Engineering
- Xi'an Jiaotong University
- Xi'an 710049
- China
| | - Honghui Yang
- Department of Environmental Science and Engineering
- Xi'an Jiaotong University
- Xi'an 710049
- China
| | - Hao Xu
- Department of Environmental Science and Engineering
- Xi'an Jiaotong University
- Xi'an 710049
- China
| | - Wei Yan
- Department of Environmental Science and Engineering
- Xi'an Jiaotong University
- Xi'an 710049
- China
- The State Key Laboratory of Multiphase Flow in Power Engineering
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35
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Simultaneous separation of iodide and cesium ions from dilute wastewater based on PPy/PTCF and NiHCF/PTCF electrodes using electrochemically switched ion exchange method. Sep Purif Technol 2015. [DOI: 10.1016/j.seppur.2014.11.003] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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36
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Abstract
Since the complexity origin of biological samples, the research trends have been directed to the development of new miniaturized sample preparation techniques. This review provides a comprehensive survey of past and present microextraction methods followed by GC analysis for preconcentration and determination of various analytes in urine samples. These techniques have been classified in three general groups, including liquid-, solid- and membrane-based techniques. The principal of different microextraction methods that are located in each general group as well as their various extraction modes and the recent developments introduced for them has been presented. Subsequently, a comparison survey has been carried out among different microextraction techniques and finally a future perspective has been predicted based on the existing literature.
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37
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Du X, Zhang H, Hao X, Guan G, Abudula A. Facile preparation of ion-imprinted composite film for selective electrochemical removal of nickel(II) ions. ACS APPLIED MATERIALS & INTERFACES 2014; 6:9543-9549. [PMID: 24836301 DOI: 10.1021/am501926u] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A facile unipolar pulse electropolymerization (UPEP) technique is successfully applied for the preparation of ion-imprinted composite film composed of ferricyanide-embedded conductive polypyrrole (FCN/PPy) for the selective electrochemical removal of heavy metal ions from wastewater. The imprinted heavy metal ions are found to be easily removed in situ from the growing film only by tactfully applying potential oscillation due to the unstable coordination of FCN to the imprinted ions. The obtained Ni(2+) ion-imprinted FCN/PPy composite film shows fast uptake/release ability for the removal of Ni(2+) ions from aqueous solution, and the adsorption equilibrium time is less than 50 s. The ion exchange capacity reaches 1.298 mmol g(-1) and retains 93.5% of its initial value even after 1000 uptake/release cycles. Separation factors of 6.3, 5.6, and 6.2 for Ni(2+)/Ca(2+), Ni(2+)/K(+), and Ni(2+)/Na(+), respectively, are obtained. These characteristics are attributed to the high identification capability of the ion-imprinted composite film for the target ions and the dual driving forces resulting from both PPy and FCN during the redox process. It is expected that the present method can be used for simple preparation of other ion-imprinted composite films for the separation and recovery of target heavy metal ions as well.
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Affiliation(s)
- Xiao Du
- Department of Chemical Engineering, Taiyuan University of Technology , Taiyuan 030024, China
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38
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Wang Z, Ma Y, Hao X, Huang W, Guan G, Abudula A. Enhancement of heavy metals removal efficiency from liquid wastes by using potential-triggered proton self-exchange effects. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2014.02.151] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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39
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More conductive polypyrrole electrodeposited on substrates with close-packed gold nanoparticles. J Electroanal Chem (Lausanne) 2014. [DOI: 10.1016/j.jelechem.2014.03.036] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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40
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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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Cui H, Qian Y, An H, Sun C, Zhai J, Li Q. Electrochemical removal of fluoride from water by PAOA-modified carbon felt electrodes in a continuous flow reactor. WATER RESEARCH 2012; 46:3943-3950. [PMID: 22595483 DOI: 10.1016/j.watres.2012.04.039] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2011] [Revised: 04/21/2012] [Accepted: 04/23/2012] [Indexed: 05/31/2023]
Abstract
A novel poly(aniline-co-o-aminophenol) (PAOA) modified carbon felt electrode reactor was designed and investigated for fluoride removal from aqueous solutions. This reactor design is innovative because it operates under a wider pH range because of coating with a copolymer PAOA ion exchange film. In addition, contaminant mass transfer from bulk solution to the electrode surface is enhanced by the porous carbon felt as an electron-conducting carrier material compared to other reactors. The electrically controlled anion exchange mechanism was investigated by X-ray photoelectron spectroscopy and cyclic voltammetry. The applicability of the reactor in the field was tested through a series of continuous flow experiments. When the flow rate and initial fluoride concentration were increased, the breakthrough curve became sharper, which lead to a decrease in the breakthrough time and the defluoridation capacity of the reactor. The terminal potential values largely influenced fluoride removal by the reactor and the optimal defluoridation efficiency was observed at around 1.2V. The breakthrough capacities were all >10mg/g over a wide pH range (pH 5-9) with an initial fluoride concentration of 10mg/L. Consecutive treatment-regeneration studies over a week (once each day) revealed that the PAOA-modified carbon felt electrode could be effectively regenerated for reuse. The PAOA-modified carbon felt electrode reactor is a promising system that could be made commercially available for fluoride removal from aqueous solutions in field applications.
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Affiliation(s)
- Hao Cui
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210093, PR China
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Zhang Y, Liu X, Li Q. Effective electrochemically controlled process for perchlorate removal using poly(aniline-co-o-aminophenol)/multiwalled carbon nanotubes. J Appl Polym Sci 2012. [DOI: 10.1002/app.38058] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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Liu X, Wang X, Tan F, Zhao H, Quan X, Chen J, Li L. An electrochemically enhanced solid-phase microextraction approach based on molecularly imprinted polypyrrole/multi-walled carbon nanotubes composite coating for selective extraction of fluoroquinolones in aqueous samples. Anal Chim Acta 2012; 727:26-33. [DOI: 10.1016/j.aca.2012.03.054] [Citation(s) in RCA: 104] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2012] [Revised: 02/16/2012] [Accepted: 03/29/2012] [Indexed: 11/30/2022]
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Bunhu T, Tichagwa L. Adsorption of Methyl Orange, Pb2+ and Cd2+ from Aqueous Solution by Composites of Lignocellulose-Montmorillonite Modified with Methacryloxypropyl Trimethoxysilane. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/masy.201250316] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Cui H, Li Q, Qian Y, Tang R, An H, Zhai J. Defluoridation of water via electrically controlled anion exchange by polyaniline modified electrode reactor. WATER RESEARCH 2011; 45:5736-5744. [PMID: 21907382 DOI: 10.1016/j.watres.2011.08.049] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2011] [Revised: 08/24/2011] [Accepted: 08/25/2011] [Indexed: 05/31/2023]
Abstract
A polyaniline (PANI) modified electrode reactor was designed for fluoride removal from aqueous solutions. The innovative concept behind the reactor design is that the uptake and elute of fluoride could be well controlled by modulating the potential of the PANI film. The maximum fluoride removal capacity of PANI is more than 20 mg/g at a positive voltage based on the electrically controlled anion-exchange mechanism. The results of batch tests showed that terminal potential values had a major impact on fluoride removal by this PANI, with optimal removal occurring at 1.5 V. The fluoride removal capacity (q(e)) increased rapidly within 5 min and reached equilibrium within 10 min, which indicated a rapid removal velocity of fluoride by PANI under this condition. The applicability of defluoridation using the PANI reactor to treat fluoride-contaminated tap water was also tested through flow cell breakthrough studies. At initial fluoride concentrations of 5 mg/L and 10 mg/L, the breakthrough capacities were 20.08 mg/g and 19.24 mg/g, respectively. Moreover, during the first half of the period before the breakthrough point, the fluoride concentration of the treated solution was below the WHO's recommended levels (1.5 mg/L). The results of the five consecutive treatment-regeneration studies also showed that the PANI films could be reused. Taken together, these results implied that the electrically controlled anion exchange by the PANI-modified electrode reactor may be an effective technique for the removal of fluoride from water.
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Affiliation(s)
- Hao Cui
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, PR China
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Zhang S, Shao Y, Liu J, Aksay IA, Lin Y. Graphene-polypyrrole nanocomposite as a highly efficient and low cost electrically switched ion exchanger for removing ClO₄⁻ from wastewater. ACS APPLIED MATERIALS & INTERFACES 2011; 3:3633-3637. [PMID: 21815667 DOI: 10.1021/am200839m] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Perchlorate (ClO(4)(-)) contamination is a widespread concern affecting water utilities. In the present study, functionalized graphene sheets were employed as the scaffold to synthesize a novel graphene-polypyrrole (Ppy) nanocomposite, which served as an excellent electrically switched ion exchanger for perchlorate removal. Scanning electron microscopy and electrochemical measurements showed that the 3D nanostructured graphene-Ppy nanocomposite exhibited a significantly improved uptake capacity for ClO(4)(-) compared with Ppy film alone. X-ray photoelectron spectroscopy confirmed the uptake and release process of ClO(4)(-) in graphene-Ppy nanocomposite. In addition, the presence of graphene substrate resulted in high stability of graphene-Ppy nanocomposite during potential cycling. The present work provides a promising method for large scale water treatment.
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Affiliation(s)
- Sheng Zhang
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
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Gao M, Yang Y, Diao M, Wang SG, Wang XH, Zhang G, Zhang G. Exceptional ion-exchange selectivity for perchlorate based on polyaniline films. Electrochim Acta 2011. [DOI: 10.1016/j.electacta.2011.06.071] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Electrocatalytic reduction of bromate ion using a polyaniline-modified electrode: An efficient and green technology for the removal of BrO3− in aqueous solutions. Electrochim Acta 2010. [DOI: 10.1016/j.electacta.2010.07.062] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Abstract
As world water demand continues to grow there is a critical need to develop sustainable water treatment solutions. This chapter describes the potential for nanomaterials to improve the sustainability of water treatment. Nanomaterial-driven advances in disinfection, oxidation, membrane separation and groundwater remediation are discussed with a view towards their potential to improve existing technologies. Disinfection technologies include oligodynamic processes with silver nanoparticles to effectively inactivate microorganisms without disinfection byproducts being formed. Oxidation technologies include metal oxide semiconductors and fullerene-based sensitisers acting as light-driven catalysts. Membrane separation processes include the embedding of materials such as zeolites, carbon nanotubes and metal oxides to improve selectivity and reduce fouling. Remediation technologies include iron particles designed to target and transform waste compounds in situ. These and other emerging water treatment technologies must be assessed with life-cycle analysis to determine the full materials and embodied energy costs of acquiring raw materials, manufacturing, use and end of life for the materials contained within each process. These costs must be weighed against the potential benefits for water treatment to determine their sustainability.
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