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Yang Y, Qiao S, Zheng M, Han Q, Wang R, Zhou J, Quan X. Polyaniline derived carbon membrane and its in-situ membrane fouling mitigation performance in MBR based on metal-free electro-Fenton. WATER RESEARCH 2022; 219:118564. [PMID: 35605394 DOI: 10.1016/j.watres.2022.118564] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 04/27/2022] [Accepted: 05/05/2022] [Indexed: 06/15/2023]
Abstract
An electro-enhanced membrane bioreactor (EMBR) was constructed with polyaniline-based carbon (PAC) separation membrane as the membrane-electrode, which could realize the in-situ electro-generation and activation of H2O2 to ·OH depending on the graphitic and pyridinic N as active sites without metal catalyst. After the continuous operation of the bioreactor for 74 days, approximately 77.41% irreversible membrane fouling occurred on the electrochemically enhanced membrane, which was less than that on the control membrane (85.96%). The ·OH oxidation combined with electrostatic barrier formed by -1.0 V enhanced PAC membrane suppressed the extracellular polymeric substances deposition on membrane. After operation, the strength of total cell, proteins, β-polysaccharides and α-polysaccharides on the membrane without bias were 5.17, 4.32, 9.65 and 16.31, respectively. In EMBR, the corresponding strength were 2.03, 3.35, 2.15 and 6.73. After calculation, the unblocked pores accounted for 35.3% and 78.5% of the total membrane surface in MBR and EMBR, respectively, indicating the fouling was alleviated obviously. Meanwhile, the EMBR owned a satisfactory wastewater treatment effect with average effluent chemical oxygen demand and NH4+-N around 18.98 mg/L and 0.68 mg/L. The successful implementation of this strategy achieved a green and metal-free method for ·OH production with electrochemical effect for membrane fouling control in MBR.
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Affiliation(s)
- Yue Yang
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, PR China
| | - Sen Qiao
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, PR China.
| | - Mingmei Zheng
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, PR China
| | - Qinqin Han
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, PR China
| | - Ruiyu Wang
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, PR China
| | - Jiti Zhou
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, PR China
| | - Xie Quan
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, PR China.
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Rakesh K, Antony R. Controlled drug release and efficient COD removal using copper immobilized zeolite 4A nanocomposite. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2021. [DOI: 10.1016/j.bcab.2021.101987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Slatni I, Elberrichi FZ, Duplay J, Fardjaoui NEH, Guendouzi A, Guendouzi O, Gasmi B, Akbal F, Rekkab I. Mesoporous silica synthesized from natural local kaolin as an effective adsorbent for removing of Acid Red 337 and its application in the treatment of real industrial textile effluent. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:38422-38433. [PMID: 32385816 DOI: 10.1007/s11356-020-08615-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 03/26/2020] [Indexed: 06/11/2023]
Abstract
This paper presents a synthesis of mesoporous silica (MS) from natural clay as a silica source using Pluronic L35 (EO11PO16EO11) as a structure-directing agent. The prepared material was characterized by XRD, X-ray fluorescence, thermogravimetric analysis, SEM, TEM, and N2 adsorption-desorption analyses. Then, mesoporous material was used for the removal of Acid Red 337 (AR337) from aqueous solution, and the treatment of real textile effluent. The effect of pH, contact time, weight of adsorbent, and initial concentration was studied in batch adsorption. The synthesized mesoporous material showed good discoloration efficiency with a 62% percentage. Experiment with real textile wastewater showed that 39%, 40%, and 31.5% of the color, TOC, and chemical oxygen demand respectively were eliminated by using 1 g of MS per liter of wastewater.
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Affiliation(s)
- Ibtissem Slatni
- Laboratoire de Chimie Physique, Université 8 Mai 1945, BP 401, Guelma, Algeria.
| | | | - Joëlle Duplay
- Laboratoire d'Hydrologie et de Géochimie de Strasbourg, EOST, 1 Rue Blessig, 67084, Strasbourg Cedex, France
| | | | - Abdelkrim Guendouzi
- Département de Chimie, Faculté des Sciences, Dr Moulay Tahar Université de Saida, Saida, Algeria
| | - Oukacha Guendouzi
- Département de Chimie, Faculté des Sciences, Dr Moulay Tahar Université de Saida, Saida, Algeria
| | - Brahim Gasmi
- Laboratoire de Physique des couches Minces et Applications, Université Mohamed Khider, Biskra, Algeria
| | - Feryal Akbal
- Department of Environmental Engineering, Ondokuz Mayıs Üniversitesi, Samsun, Turkey
| | - Ilhem Rekkab
- Laboratoire de Catalyse et Synthèse en Chimie Organique, Faculté des Sciences, Université de Tlemcen, Tlemcen, Algeria
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Makgabutlane B, Nthunya LN, Musyoka N, Dladla BS, Nxumalo EN, Mhlanga SD. Microwave-assisted synthesis of coal fly ash-based zeolites for removal of ammonium from urine. RSC Adv 2020; 10:2416-2427. [PMID: 35494557 PMCID: PMC9048987 DOI: 10.1039/c9ra10114d] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Accepted: 12/26/2019] [Indexed: 11/21/2022] Open
Abstract
Zeolites synthesized from biomass waste materials offer a great opportunity in the sustainable utilization of the waste.
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Affiliation(s)
- Boitumelo Makgabutlane
- Nanotechnology and Water Sustainability Research Unit
- College of Science, Engineering and Technology
- University of South Africa
- Florida
- South Africa
| | - Lebea N. Nthunya
- Department of Chemical
- Metallurgical and Material Engineering
- Tshwane University of Technology
- Pretoria
- South Africa
| | - Nicholas Musyoka
- HySA Infrastructure Centre of Competence, Energy Centre
- Council for Scientific and Industrial Research (CSIR)
- Pretoria
- South Africa
| | - Bongumusa S. Dladla
- Department of Chemistry
- College of Science, Engineering and Technology
- University of South Africa
- Florida
- South Africa
| | - Edward N. Nxumalo
- Nanotechnology and Water Sustainability Research Unit
- College of Science, Engineering and Technology
- University of South Africa
- Florida
- South Africa
| | - Sabelo D. Mhlanga
- Nanotechnology and Water Sustainability Research Unit
- College of Science, Engineering and Technology
- University of South Africa
- Florida
- South Africa
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