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Acylhydrazone-modified guar gum material for the highly effective removal of oily sewage. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.104532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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2
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Nidheesh PV, Khan FM, Kadier A, Akansha J, Bote ME, Mousazadeh M. Removal of nutrients and other emerging inorganic contaminants from water and wastewater by electrocoagulation process. CHEMOSPHERE 2022; 307:135756. [PMID: 35917977 DOI: 10.1016/j.chemosphere.2022.135756] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 07/01/2022] [Accepted: 07/14/2022] [Indexed: 06/15/2023]
Abstract
The continual discharge of emerging inorganic pollutants into natural aquatic systems and their negative effects on the environment have motivated the researchers to explore and develop clean and efficient water treatment strategies. Electrocoagulation (EC) is a rapid and promising pollutant removal approach that does not require any chemical additives or complicated process management. Therefore, inorganic pollutant treatment via the EC process is considered one of the most feasible processes. The potential developments of EC process may make the process a wise choice for water treatment in the future. Thus, the present study mainly focuses on the use of EC technology to remove nutrients and other emerging inorganic pollutants from water medium. The operating factors that influence EC process efficiency are explained. The major advancement of the EC technique as well as field-implemented units are also discussed. Overall, this study mainly focuses on emerging issues, present advancements, and techno-economic considerations in EC process.
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Affiliation(s)
- P V Nidheesh
- CSIR-National Environmental Engineering Research Institute, Nagpur, Maharashtra, 440020, India.
| | - Farhan M Khan
- CSIR-National Environmental Engineering Research Institute, Nagpur, Maharashtra, 440020, India
| | - Abudukeremu Kadier
- Laboratory of Environmental Science and Technology, The Xinjiang Technical Institute of Physics and Chemistry, Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi, 830011, China; Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - J Akansha
- School of Civil Engineering, Vellore Institute of Technology, Katpadi, Vellore, Tamil Nadu, 632 014, India
| | - Million Ebba Bote
- Department of Water Supply and Environmental Engineering, Faculty of Civil and Environmental Engineering, Jimma Institute of Technology, Jimma University, Jimma, PoBox - 378, Ethiopia
| | - Milad Mousazadeh
- Department of Environmental Health Engineering, School of Health, Qazvin University of Medical Sciences, Qazvin, Iran; Social Determinants of Health Research Center, Research Institute for Prevention of Non-Communicable Diseases, Qazvin University of Medical Sciences, Qazvin, Iran
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Shen X, Liu Q, Li H, Kuang X. Membrane-free electrodeionization using graphene composite electrode to purify copper-containing wastewater. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2022; 86:1733-1744. [PMID: 36240308 DOI: 10.2166/wst.2022.298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Membrane-free electrodeionization (MFEDI) technology involves in situ electric regeneration of ion exchange resin, and is used to efficiently purify copper-containing wastewater, so that both the wastewater and copper may be reused. The electrode is the core functional component of a MFEDI system. Electrode-selection greatly influences the electric regeneration efficiency, water recovery and energy consumption of MFEDI processes. In this study, a graphene composite electrode was developed to improve MFEDI-system performance. A graphene composite electrode and conventional platinum-plated titanium electrode were both characterized by scanning electron microscopy (SEM) and electrochemical testing. Furthermore, the treatment and electrical regeneration properties of MFEDI systems with these two electrodes were investigated. The specific surface area of the electrode increased after graphene loading, while the oxygen evolution potential decreased. Wastewater treatment experiments demonstrated that MFEDI systems with graphene composite electrodes effectively removed copper from wastewater. The study also highlighted that the electroregeneration efficiency of the MFEDI system was improved by loading with graphene; the average copper concentration in the regeneration solution increased by 1.4 times to 50.4 mg/L, while the energy consumption decreased from 1.55 to 1.48 kWh/m3, and the water recovery rate increased from 85 to 90%.
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Affiliation(s)
- Xiaolan Shen
- Zhejiang Collaborative Innovation Center for High Value Utilization of Byproducts from Ethylene Project, Ningbo Polytechnic, 388 Lushandong Road, Ningbo 315800, China E-mail: ; Chemical Engineering Department, Ningbo Polytechnic, 388 Lushandong Road, Ningbo 315800, China
| | - Qi Liu
- Suzhou Industrial Park Qingyuan Hongkong&China Water Co., LTD., 33 Xinggang Street, Suzhou 215000, China
| | - Hao Li
- Zhejiang Collaborative Innovation Center for High Value Utilization of Byproducts from Ethylene Project, Ningbo Polytechnic, 388 Lushandong Road, Ningbo 315800, China E-mail: ; Chemical Engineering Department, Ningbo Polytechnic, 388 Lushandong Road, Ningbo 315800, China
| | - Xinmou Kuang
- Zhejiang Collaborative Innovation Center for High Value Utilization of Byproducts from Ethylene Project, Ningbo Polytechnic, 388 Lushandong Road, Ningbo 315800, China E-mail: ; Chemical Engineering Department, Ningbo Polytechnic, 388 Lushandong Road, Ningbo 315800, China
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Vedula SS, Yadav GD. Synthesis and application of environment friendly membranes of chitosan and chitosan-PTA for removal of copper (II) from wastewater. Chem Ind 2022. [DOI: 10.1080/00194506.2022.2093636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Shivani S. Vedula
- Department of Chemical Engineering, Institute of Chemical Technology, Mumbai, India
| | - Ganapati D. Yadav
- Department of Chemical Engineering, Institute of Chemical Technology, Mumbai, India
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Amin NK, Nosier SA, Abdel-Aziz MH, Hassan MS, Sedahmed GH, El-Naggar MA. Electrochemical regeneration of hexavalent chromium from aqueous solutions in a gas sparged parallel plate reactor. ENVIRONMENTAL TECHNOLOGY 2022; 43:2405-2417. [PMID: 33494654 DOI: 10.1080/09593330.2021.1881827] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 01/18/2021] [Indexed: 06/12/2023]
Abstract
In this study anodic oxidation of Cr2(SO4)3 was carried out in an air-sparged divided parallel plate cell. Variables studied were current density, Cr2(SO4)3 concentration, and superficial air velocity. The rate constant of Cr2(SO4)3 oxidation was found to increase with increasing current density and Cr2(SO4)3 concentration. The effect of air sparging was found to depend on Cr2(SO4)3 concentrations, at high Cr2(SO4)3 concentration (> 0.1 M) air sparging does not affect the rate constant of the reaction denoting that the reaction is charge transfer controlled. As Cr2(SO4)3 concentration decreases below 0.1 M the reaction becomes under mixed diffusion and chemical control and the rate constant increases with increasing air superficial velocity, the lower Cr2(SO4)3 concentration the higher the contribution of diffusion to the reaction rate. The current efficiency of the process ranged from 20 to 85% depending on current density and Cr2(SO4)3 concentration. Electrical energy consumption which ranged from 1.8 to 14.4 kW h/kg of Cr6+ was found to increase with increasing current density and decreases with increasing Cr2(SO4)3 concentration. Air sparging was found to decrease electrical energy consumption in the case of dilute solutions << 0.1 M Cr2(SO4)3.
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Affiliation(s)
- N K Amin
- Chemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, Egypt
| | - S A Nosier
- Chemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, Egypt
| | - M H Abdel-Aziz
- Chemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, Egypt
- Chemical and Materials Engineering Department, King Abdulaziz University, Rabigh, Saudi Arabia
| | - M S Hassan
- Chemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, Egypt
| | - G H Sedahmed
- Chemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, Egypt
| | - M A El-Naggar
- Chemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, Egypt
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Mahesh S, Shivaprasad KS, Sanjana M. Ayurvedic hospital wastewater degradation using electrochemical treatment. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2022; 85:1855-1877. [PMID: 35358076 DOI: 10.2166/wst.2022.079] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The goal of this research was to remove COD, oil and grease (O&G) and color from raw ayurvedic hospital wastewater (AHWW) using a novel electrochemical coagulation (ECC) process. Cell voltage was initially optimized using iron electrodes in bipolar mode for both raw AHWW and ayurvedic hospital therapy room wastewater (AH-TRWW) for a pre-optimized electrolysis time (ET) of 60 min. O&G, COD and color removals for AHWW at 8 V optimized cell voltage were 96, 61 and 96% respectively. Different electrode materials, copper, aluminum, graphite, were used to evaluate relative performances at 8 V. Iron electrodes showed maximum pollutant removal from raw AHWW. The sludge obtained after the ECC process showed good settling and filterability properties compared to graphite and aluminum electrodes. The low SVI value of 146 mL/g was obtained exercising absolute control on sludge volume. Solids flux values showed assurances of compact settling tank design with least spatial footprint. EDX analysis for ECC sludge of AHWW using iron showed gross elements 40.19% C, 48.63% O and 7.92% Fe redefining the fate of sludge. The XRD pattern of the ECC sludge showed an amorphous nature. Post-ECC filtration effluent showed clear water reclamation of 80-82%, proving the effectiveness of the novel ECC treatment process.
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Affiliation(s)
- S Mahesh
- Department of Environmental Engineering, Sri Jayachamarajendra College of Engineering, Constituent College of JSS Science and Technology University (Formerly SJCE), JSSTI Campus, Mysuru, Karnataka State 570006, India E-mail:
| | - K S Shivaprasad
- Department of Environmental Engineering, Sri Jayachamarajendra College of Engineering, Constituent College of JSS Science and Technology University, JSSTI Campus, Mysuru, Karnataka State 570006, India
| | - Mahesh Sanjana
- JSS Ayurveda Medical College, Lalitadripura Road, Alanahalli, Mysuru, Karnataka State 570028, India
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Lam SM, Sin JC, Zeng H, Lin H, Li H, Mohamed AR, Lim JW. Ameliorating Cu 2+ reduction in microbial fuel cell with Z-scheme BiFeO 3 decorated on flower-like ZnO composite photocathode. CHEMOSPHERE 2022; 287:132384. [PMID: 34597645 DOI: 10.1016/j.chemosphere.2021.132384] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 07/25/2021] [Accepted: 09/26/2021] [Indexed: 06/13/2023]
Abstract
BiFeO3 nanoparticle decorated on flower-like ZnO (BiFeO3/ZnO) was fabricated through a facile hydrothermal-reflux combined method. This material was utilized as a composite photocathode for the first time in microbial fuel cell (MFC) to reduce the copper ion (Cu2+) and power generation concomitantly. The resultant BiFeO3/ZnO-based MFC displayed distinct photoelectrocatalytic activities when different weight percentages (wt%) BiFeO3 were used. The 3 wt% BiFeO3/ZnO MFC achieved the maximum power density of 1.301 W m-2 in the catholyte contained 200 mg L-1 of Cu2+ and the power density was greatly higher than those pure ZnO and pure BiFeO3 photocathodes. Meanwhile, the MFC exhibited 90.7% removal of Cu2+ within 6 h under sunlight exposure at catholyte pH 4. The addition of BiFeO3 nanoparticles not only manifested outstanding capability in harvesting visible light, but also facilitated the formation of Z-scheme BiFeO3/ZnO heterojunction structure to induce the charge carrier transfer along with enhanced redox abilities for the cathodic reduction. The pronounced electrical output and Cu2+ reduction efficiencies can be realized through the synergistic cooperation between the bioanode and BiFeO3/ZnO photocathode in the MFC. Furthermore, the developed BiFeO3/ZnO composite presented a good stability and reusability of photoelectrocatalytic activity up to five cyclic runs.
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Affiliation(s)
- Sze-Mun Lam
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin, 541004, China; Guangxi Key Laboratory of Theory and Technology for Environmental Pollution Control, Guilin University of Technology, Guilin, 541004, China; Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area, Guilin University of Technology, Guilin, 541004, China; Department of Environmental Engineering, Faculty of Engineering and Green Technology, Universiti Tunku Abdul Rahman, 31900, Kampar, Perak, Malaysia.
| | - Jin-Chung Sin
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin, 541004, China; Guangxi Key Laboratory of Theory and Technology for Environmental Pollution Control, Guilin University of Technology, Guilin, 541004, China; Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area, Guilin University of Technology, Guilin, 541004, China; Department of Petrochemical Engineering, Faculty of Engineering and Green Technology, Universiti Tunku Abdul Rahman, 31900, Kampar, Perak, Malaysia
| | - Honghu Zeng
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin, 541004, China; Guangxi Key Laboratory of Theory and Technology for Environmental Pollution Control, Guilin University of Technology, Guilin, 541004, China; Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area, Guilin University of Technology, Guilin, 541004, China.
| | - Hua Lin
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin, 541004, China; Guangxi Key Laboratory of Theory and Technology for Environmental Pollution Control, Guilin University of Technology, Guilin, 541004, China; Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area, Guilin University of Technology, Guilin, 541004, China
| | - Haixiang Li
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin, 541004, China; Guangxi Key Laboratory of Theory and Technology for Environmental Pollution Control, Guilin University of Technology, Guilin, 541004, China; Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area, Guilin University of Technology, Guilin, 541004, China
| | - Abdul Rahman Mohamed
- School of Chemical Engineering, Universiti Sains Malaysia, Engineering Campus, 14300, Nibong Tebal, Pulau Pinang, Malaysia
| | - Jun Wei Lim
- Department of Fundamental and Applied Sciences, HICoE-Centre for Biofuel and Biochemical Research, Institute of Self-Sustainable Building, Universiti Teknologi PETRONAS, 32610, Seri Iskandar, Perak Darul Ridzuan, Malaysia
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Hu J, Chen J, Liu F, An S, Shi Y, Luan Z, Xiao J, Zhang B. Enhancing oil removal from wastewater by combining inclined plate settler and electrocoagulation. SEP SCI TECHNOL 2021. [DOI: 10.1080/01496395.2021.1993258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Jianlong Hu
- School of Mechanical Engineering, Beijing Institute of Petrochemical Technology, Beijing, P. R. China
| | - Jiaqing Chen
- School of Mechanical Engineering, Beijing Institute of Petrochemical Technology, Beijing, P. R. China
| | - Fan Liu
- School of Mechanical Engineering, Beijing Institute of Petrochemical Technology, Beijing, P. R. China
| | - Shenfa An
- Petroleum Engineering Technology Research Institute of Shengli Oilfield Branch, SINOPEC Group, Dongying, P. R. China
| | - Yi Shi
- School of Mechanical Engineering, Beijing Institute of Petrochemical Technology, Beijing, P. R. China
| | - Zhiyong Luan
- Petroleum Engineering Technology Research Institute of Shengli Oilfield Branch, SINOPEC Group, Dongying, P. R. China
| | - Jianhong Xiao
- Petroleum Engineering Technology Research Institute of Shengli Oilfield Branch, SINOPEC Group, Dongying, P. R. China
| | - Baosheng Zhang
- School of Mechanical Engineering, Beijing Institute of Petrochemical Technology, Beijing, P. R. China
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Chen P, Xu J, Meng G, Zhao W, Wang H, Zhang L. Influence of oil droplet behavior in electrochemical micromembrane cells on treating oil/water emulsions with low-salt concentrations. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 781:146633. [PMID: 33798875 DOI: 10.1016/j.scitotenv.2021.146633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 03/04/2021] [Accepted: 03/16/2021] [Indexed: 06/12/2023]
Abstract
Although flow-through electrode has demonstrated its potential in treating oily wastewater, few studies noted influence of oil droplet behavior on treating oil/water emulsions. In order to explore the influence of oil droplet behavior in a flow-through electrode cell on treating oil/water emulsions with low-salt concentrations, an electrochemical micromembrane cell was applied to treat oil/water emulsions with 0-0.8 g/L NaCl. High chemical oxygen demand (COD) reduction (80-90%) was obtained in treating Sodium dodecylbenzene sulfonate (SDBS) or Tween 80 emulsion by flow-through electrode, while the later had the higher permeate flux (900 mL/min around). The low salt concentration (0.5 g/L NaCl) achieved high COD reduction (87%) and good permeate flux (600 mL/min). Observations using optical microscopy revealed severe deformation of the shape of the charged oil droplet at the flow-through electrode interface. The wetting of oil droplets at the electrode interface occurred when the membrane acted as an anode, which resulted in flow-through electrode fouling, and subsequently, the reduction in permeate flux and treatment efficiency. The results of this study offer an attractive option when using flow-through electrode to treat oil-in-water emulsions under low-salinity conditions.
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Affiliation(s)
- Peng Chen
- National Engineering Laboratory for Industrial Wastewater Treatment, East China University of Science and Technology, Shanghai 200237, China
| | - Jiali Xu
- National Engineering Laboratory for Industrial Wastewater Treatment, East China University of Science and Technology, Shanghai 200237, China
| | - Guangyuan Meng
- National Engineering Laboratory for Industrial Wastewater Treatment, East China University of Science and Technology, Shanghai 200237, China
| | - Wei Zhao
- National Engineering Laboratory for Industrial Wastewater Treatment, East China University of Science and Technology, Shanghai 200237, China
| | - Hualin Wang
- National Engineering Laboratory for Industrial Wastewater Treatment, East China University of Science and Technology, Shanghai 200237, China; State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, China
| | - Lehua Zhang
- National Engineering Laboratory for Industrial Wastewater Treatment, East China University of Science and Technology, Shanghai 200237, China; State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China.
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Lam SM, Sin JC, Zeng H, Lin H, Li H, Qin Z, Lim JW, Mohamed AR. Z-scheme MoO3 anchored-hexagonal rod like ZnO/Zn photoanode for effective wastewater treatment, copper reduction accompanied with electricity production in sunlight-powered photocatalytic fuel cell. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118495] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Electrochemical removal of sulfide ions and recovery of sulfur from sulfide ions containing wastes. J IND ENG CHEM 2021. [DOI: 10.1016/j.jiec.2020.11.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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