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Li Y, Zhang Z, Zhao Y, Han Y, Ren L, Sun Y. A comparison of micro-flocculation and ozonation as pretreatments for ultrafiltration: organic removal and membrane fouling. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:112267-112276. [PMID: 37831270 DOI: 10.1007/s11356-023-30322-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Accepted: 10/03/2023] [Indexed: 10/14/2023]
Abstract
Micro-flocculation and ozone were applied as pretreatments of ultrafiltration to treat sodium alginate (SA) and humic acid (HA) simulated water, respectively, to investigate the effects of different pretreatments of ultrafiltration (UF) on filtration flux and removal of organic matters. Regarding the SA simulated water, micro-flocculation helped to improve the dissolved organic carbon (DOC) removal efficiency highly, maximum DOC removal efficiency reached to 79.77%, due to the rejection of gel layer introduced by the alginate-aluminum complexes, but the gel layer had a negative impact on membrane flux. Compared with micro-flocculation, ozone as pretreatments had better ability to enhance the membrane specific flux, the maximum final specific flux remained as 0.786, larger than that of MF-UF process (0.574). Ozonation oxidizing SA into small organic molecules significantly reduced membrane fouling and filtration resistance, but also produced some dissolved organic matters hindering DOC removal of effluent. As for HA simulated water, both the micro-flocculation and ozone could effectively improve the specific flux, the final specific flux of MF-UF and ozone-UF were about 0.930, but MF-UF exhibited better DOC removal than ozone-UF, which avoided the introduction of additional dissolved organic matters.
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Affiliation(s)
- Yujiao Li
- School of Ecology and Environment, Beijing Technology and Business University, Beijing, 100048, China
- State Environmental Protection Key Laboratory of Food Chain Pollution Control, Beijing Technology and Business University, Beijing, 100048, China
| | - Zhaoheng Zhang
- School of Ecology and Environment, Beijing Technology and Business University, Beijing, 100048, China
| | - Yikan Zhao
- School of Ecology and Environment, Beijing Technology and Business University, Beijing, 100048, China
| | - Yuting Han
- School of Ecology and Environment, Beijing Technology and Business University, Beijing, 100048, China
| | - Lanxin Ren
- School of Ecology and Environment, Beijing Technology and Business University, Beijing, 100048, China
| | - Yingxue Sun
- School of Ecology and Environment, Beijing Technology and Business University, Beijing, 100048, China.
- State Environmental Protection Key Laboratory of Food Chain Pollution Control, Beijing Technology and Business University, Beijing, 100048, China.
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2
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Du J, Waite TD, Biesheuvel PM, Tang W. Recent advances and prospects in electrochemical coupling technologies for metal recovery from water. JOURNAL OF HAZARDOUS MATERIALS 2023; 442:130023. [PMID: 36155294 DOI: 10.1016/j.jhazmat.2022.130023] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Revised: 08/22/2022] [Accepted: 09/16/2022] [Indexed: 05/27/2023]
Abstract
With the development of our society, the desire to recover valuable metal resources from metal-containing wastewaters or natural water bodies is becoming increasingly stronger nowadays. To overcome the limitations of single techniques, coupling technologies with synergistic effects are attracting increasing attention regarding metal resource recovery from water with particular interest in electrochemical coupling technologies in view of the advantages of electrochemical methods. This state-of-the-art review comprehensively presented the mechanisms and performance of electrochemical coupling systems for metal recovery from water. To give a clear overview of current research trends, technologies coupled with electrochemical processes can be categorized into six main types: electrochemical techniques, membrane modules, adsorption/extraction techniques, sonication technologies, energy supply techniques and others. The electrochemical coupling system has shown synergistic advantages (e.g., improving metal recovery efficiency, reducing energy consumption) over single technologies. We then discuss the remaining challenges, present corresponding solutions, and put forward future directions for current electrochemical coupled systems towards metal recovery. This review is conducive to broadening the potential applications of electrochemical coupling processes for metal recovery and sustainable water treatment.
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Affiliation(s)
- Jiaxin Du
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
| | - T David Waite
- School of Civil and Environmental Engineering, University of New South Wales, Sydney, NSW 2052, Australia
| | - P M Biesheuvel
- Wetsus, European Centre of Excellence for Sustainable Water Technology, 8911 MA Leeuwarden, the Netherlands
| | - Wangwang Tang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China.
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Vasconcelos VM, Santos GOS, Eguiluz KIB, Salazar-Banda GR, de Fatima Gimenez I. Recent advances on modified reticulated vitreous carbon for water and wastewater treatment - A mini-review. CHEMOSPHERE 2022; 286:131573. [PMID: 34303050 DOI: 10.1016/j.chemosphere.2021.131573] [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: 11/28/2020] [Revised: 07/09/2021] [Accepted: 07/14/2021] [Indexed: 06/13/2023]
Abstract
Recently, modifications on reticulated vitreous carbon (RVC) have attracted attention as a promising strategy to produce low-cost, stable, and highly active electrodes leading to significant advances in the water/wastewater treatment field compared with raw RVC. Modified RVC materials have been used as cathode, anode, and membrane. Improvements on physical and electrocatalytic properties are achieved by RVC modification via diverse strategies, including the deposition of metal oxides, the introduction of surface functional groups, and the formation of composites, which were used to remove organic contaminants and pathogens from water matrices, as summarized in this mini-review. This mini-review mainly focused on papers published from 2015 to 2020 that reported modified RVC electrodes to eliminate pollutants and pathogens from water matrices by electrochemical advanced oxidation processes. Likewise, news challenges and opportunities are discussed, and perspectives for the ongoing and future studies in this research field are also given.
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Affiliation(s)
- Vanessa M Vasconcelos
- Programa de Pós-Graduação em Química, Universidade Federal de Sergipe, 49100-000, São Cristóvão, SE, Brazil
| | - Géssica O S Santos
- Laboratório de Eletroquímica e Nanotecnologia - LEN, Instituto de Tecnologia e Pesquisa - ITP, 49032-490, Aracaju, Sergipe, Brazil
| | - Katlin I B Eguiluz
- Laboratório de Eletroquímica e Nanotecnologia - LEN, Instituto de Tecnologia e Pesquisa - ITP, 49032-490, Aracaju, Sergipe, Brazil; Programa de Pós-graduação em Engenharia de Processos, Universidade Tiradentes - UNIT, 49032-490, Aracaju, Sergipe, Brazil.
| | - Giancarlo R Salazar-Banda
- Laboratório de Eletroquímica e Nanotecnologia - LEN, Instituto de Tecnologia e Pesquisa - ITP, 49032-490, Aracaju, Sergipe, Brazil; Programa de Pós-graduação em Engenharia de Processos, Universidade Tiradentes - UNIT, 49032-490, Aracaju, Sergipe, Brazil
| | - Iara de Fatima Gimenez
- Programa de Pós-Graduação em Química, Universidade Federal de Sergipe, 49100-000, São Cristóvão, SE, Brazil.
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Salmerón I, Oller I, Malato S. Solar photo-assisted electrochemical processes applied to actual industrial and urban wastewaters: A practical approach based on recent literature. CHEMOSPHERE 2021; 279:130560. [PMID: 34134406 DOI: 10.1016/j.chemosphere.2021.130560] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 03/21/2021] [Accepted: 04/08/2021] [Indexed: 06/12/2023]
Abstract
The application of electrochemical processes for wastewater treatment has increase significantly in the last two decades. However, most of the works are focused on lab-scale systems testing in saline simulated solutions spiked with a reference organic compound, evidencing the scarcity of studies on actual wastewaters through a more realistic practical approach. The aim of the present work is assessing the performance of electrochemical treatments in actual matrices, considering the formation of different oxidants species, apart from hydroxyl radicals, from dissolved ions contained in target effluents as well as both, the regeneration of Fe2+ and their combination with a light irradiation source. The degradation of a mix of microcontaminants in water matrices with different complexity by solar photoelectron-Fenton at natural pH and at pilot scale has been carried out at Plataforma Solar de Almería. Higher degradation rates were obtained when focusing on the more complex and saline matrices. In addition, complex industrial wastewaters mineralization was also studied by means of solar assisted electro-oxidation, showing the crucial role of ammonium concentration in the effluent, since it acts as a competitor for active chlorine species and so reducing the mineralization rate.
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Affiliation(s)
- I Salmerón
- Plataforma Solar de Almería, Ctra Senés Km 4, 04200, Tabernas, Almería, Spain
| | - I Oller
- Plataforma Solar de Almería, Ctra Senés Km 4, 04200, Tabernas, Almería, Spain
| | - S Malato
- Plataforma Solar de Almería, Ctra Senés Km 4, 04200, Tabernas, Almería, Spain
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Dória AR, Santos GOS, Pelegrinelli MMS, Silva DC, de Matos DB, Cavalcanti EB, Silva RS, Salazar-Banda GR, Eguiluz KIB. Improved 4-nitrophenol removal at Ti/RuO 2-Sb 2O 4-TiO 2 laser-made anodes. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:23634-23646. [PMID: 32812159 DOI: 10.1007/s11356-020-10451-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Accepted: 08/09/2020] [Indexed: 06/11/2023]
Abstract
In this study, binary and ternary mixed metal oxide anodes of Ti/RuO2-Sb2O4 and Ti/RuO2-Sb2O4-TiO2 were prepared using two different heating methods: conventional furnace and alternative CO2 laser heating. The produced anodes were physically and electrochemically characterized by using different techniques. The main difference found in the laser-made anodes was their more compact morphology, without the common deep cracks found in anodes made by typical thermal decomposition, which showed an important correlation with the prolonged accelerated service life. The correlation between the physicochemical properties of the anodes with their performance towards the 4-nitrophenol oxidations is discussed. The results demonstrated that the ternary anode (Ti/RuO2-Sb2O4-TiO2) is very promising, presenting a kinetic 5.7 times faster than the respective binary anode and the highest removal efficiency when compared with conventionally made anodes. Also, the lowest energy consumption per unit of mass of contaminant removed is seen for the laser-made Ti/RuO2-Sb2O4-TiO2 anode, which evidences the excellent cost-benefit of this anode material. Finally, some by-products were identified, and a degradation route is proposed. Graphical abstract.
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Affiliation(s)
- Aline R Dória
- Electrochemistry and Nanotechnology Laboratory, Institute of Technology and Research (ITP), Aracaju, SE, Brazil
- Postgraduate Program in Process Engineering (PEP), Tiradentes University, Aracaju, SE, Brazil
| | - Géssica O S Santos
- Electrochemistry and Nanotechnology Laboratory, Institute of Technology and Research (ITP), Aracaju, SE, Brazil.
- Postgraduate Program in Process Engineering (PEP), Tiradentes University, Aracaju, SE, Brazil.
| | - Mariane M S Pelegrinelli
- Electrochemistry and Nanotechnology Laboratory, Institute of Technology and Research (ITP), Aracaju, SE, Brazil
| | - Deyvid C Silva
- Functional Nanomaterials Group, Department of Physics, Federal University of Sergipe, São Cristóvão, SE, Brazil
| | - Danielle B de Matos
- Postgraduate Program in Process Engineering (PEP), Tiradentes University, Aracaju, SE, Brazil
- Waste and Sewage Treatment Laboratory, Institute of Technology and Research (ITP), Aracaju, SE, Brazil
| | - Eliane Bezerra Cavalcanti
- Postgraduate Program in Process Engineering (PEP), Tiradentes University, Aracaju, SE, Brazil
- Waste and Sewage Treatment Laboratory, Institute of Technology and Research (ITP), Aracaju, SE, Brazil
| | - Ronaldo S Silva
- Functional Nanomaterials Group, Department of Physics, Federal University of Sergipe, São Cristóvão, SE, Brazil
| | - Giancarlo R Salazar-Banda
- Electrochemistry and Nanotechnology Laboratory, Institute of Technology and Research (ITP), Aracaju, SE, Brazil
- Postgraduate Program in Process Engineering (PEP), Tiradentes University, Aracaju, SE, Brazil
| | - Katlin I B Eguiluz
- Electrochemistry and Nanotechnology Laboratory, Institute of Technology and Research (ITP), Aracaju, SE, Brazil
- Postgraduate Program in Process Engineering (PEP), Tiradentes University, Aracaju, SE, Brazil
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Menon P, Anantha Singh TS, Pani N, Nidheesh PV. Electro-Fenton assisted sonication for removal of ammoniacal nitrogen and organic matter from dye intermediate industrial wastewater. CHEMOSPHERE 2021; 269:128739. [PMID: 33131740 DOI: 10.1016/j.chemosphere.2020.128739] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 10/19/2020] [Accepted: 10/22/2020] [Indexed: 06/11/2023]
Abstract
The intricacy in the treatment of effluents from the textile sector attracts the researchers since 20th century. Dye intermediate manufacturing industries are responsible for producing the toxic pollutants such as nitro-aromatics, benzene, toluene, phenol, heavy metals etc. with intense colour. The present study focuses on the performance of combined Electro-Fenton (EF) and sonication for the removal of ammoniacal nitrogen and COD from dye intermediate manufacturing wastewater. Batch experiments of EF were performed using graphite electrodes and sonication was applied to the EF treated wastewater to enhance the treatment performance. A number of experiments were executed to discover the influence of pH, applied voltage, Fenton catalyst dosage and time of electrolysis on the removal efficiency of EF batch process was scrutinized. The pH was varied between 2 and 4, applied voltage from 1 to 4V, Fenton catalyst dosage between 50 and 200 mg L-1 and time between 15 and 180 min. At optimum condition i.e. pH 3, applied voltage 3V, Fenton catalyst dosage of 100 mg L-1and 120 min electrolysis time, the percentage removal obtained for ammoniacal nitrogen and COD were 59.4% and 79.2% respectively. The removal efficiency was increased to 65.5% for ammoniacal nitrogen and 85.4% for COD after applying sonication to the EF treated wastewater. The removal of ammoniacal nitrogen and COD can be achieved in a scientific and feasible way by combining EF process with sonication.
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Affiliation(s)
- Poornima Menon
- Department of Civil Engineering, School of Technology, Pandit Deendayal Petroleum University, Gandhinagar, 382007, India
| | - T S Anantha Singh
- Department of Civil Engineering, School of Technology, Pandit Deendayal Petroleum University, Gandhinagar, 382007, India; Department of Civil Engineering, National Institute of Technology Calicut, India.
| | - Nibedita Pani
- Department of Science, School of Technology, Pandit Deendayal Petroleum University, Gandhinagar, 382007, India
| | - P V Nidheesh
- CSIR, National Environmental Engineering Research Institute, Nagpur, Maharashtra, India
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Application of sodium alginate as a coagulant aid for mitigating membrane fouling induced by humic acid in dead-end ultrafiltration process. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.117421] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Wei K, Cui T, Huang F, Zhang Y, Han W. Membrane Separation Coupled with Electrochemical Advanced Oxidation Processes for Organic Wastewater Treatment: A Short Review. MEMBRANES 2020; 10:membranes10110337. [PMID: 33198324 PMCID: PMC7697808 DOI: 10.3390/membranes10110337] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 11/10/2020] [Accepted: 11/10/2020] [Indexed: 11/25/2022]
Abstract
Research on the coupling of membrane separation (MS) and electrochemical advanced oxidation processes (EAOPs) has been a hot area in water pollution control for decades. This coupling aims to greatly improve water quality and focuses on the challenges in practical application to provide a promising solution to water shortage problems. This article provides a summary of the coupling configurations of MS and EAOPs, including two-stage and one-pot processes. The two-stage process is a combination of MS and EAOPs where one process acts as a pretreatment for the other. Membrane fouling is reduced when setting EAOPs before MS, while mass transfer is promoted when placing EAOPs after MS. A one-pot process is a kind of integration of two technologies. The anode or cathode of the EAOPs is fabricated from porous materials to function as a membrane electrode; thus, pollutants are concurrently separated and degraded. The advantages of enhanced mass transfer and the enlarged electroactive area suggest that this process has excellent performance at a low current input, leading to much lower energy consumption. The reported conclusions illustrate that the coupling of MS and EAOPs is highly applicable and may be widely employed in wastewater treatment in the future.
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Affiliation(s)
- Kajia Wei
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environment and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China; (K.W.); (T.C.); (F.H.)
| | - Tao Cui
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environment and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China; (K.W.); (T.C.); (F.H.)
- Nanjing Research Institute of Electronic Engineering, Nanjing 210007, China
| | - Fang Huang
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environment and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China; (K.W.); (T.C.); (F.H.)
| | - Yonghao Zhang
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environment and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China; (K.W.); (T.C.); (F.H.)
- School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, China
- Correspondence: (Y.Z.); (W.H.)
| | - Weiqing Han
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environment and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China; (K.W.); (T.C.); (F.H.)
- Correspondence: (Y.Z.); (W.H.)
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