Electrochemical processes for the treatment of contaminant-rich wastewater: A comprehensive review.

Autor: Brião GV; Center of Research on Science and Technology of BioResources, São Carlos Institute of Chemistry, University of São Paulo, Trabalhador São Carlense Ave, 400, São Carlos 13566-590, SP, Brazil., da Costa TB; CQC-IMS, Department of Chemistry, University of Coimbra, Coimbra, 3004-535, Portugal., Antonelli R; Department of Chemical Engineering, University of São Paulo, Prof. Luciano Gualberto Ave, tr. 3, 380, São Paulo 05508-010, SP, Brazil., Costa JM; Department of Chemical Engineering, Imperial College London, London, SW7 2AZ, United Kingdom. Electronic address: josiel.martins.costa@gmail.com.
Jazyk: angličtina
Zdroj: Chemosphere [Chemosphere] 2024 May; Vol. 355, pp. 141884. Date of Electronic Publication: 2024 Apr 02.
DOI: 10.1016/j.chemosphere.2024.141884
Abstrakt: Global water demand and environmental concerns related to climate change require industries to develop high-efficiency wastewater treatment methods to remove pollutants. Likewise, toxic pollutants present in wastewater negatively affect the environment and human health, requiring effective treatment. Although conventional treatment processes remove carbon and nutrients, they are insufficient to remove pharmaceuticals, pesticides, and plasticizers. Electrochemical processes effectively remove pollutants from wastewater through the mineralization of non-biodegradable pollutants with consequent conversion into biodegradable compounds. Its advantages include easy operation, versatility, and short reaction time. In this way, this review initially provides a global water scenario with a view to the future. It comprises global demand, treatment methods, and pollution of water resources, addressing various contaminants such as heavy metals, nutrients, organic compounds, and emerging contaminants. Subsequently, the fundamentals of electrochemical treatments are presented as well as electrochemical treatments, highlighting the latest studies involving electrocoagulation, electroflocculation, electroflotation, capacitive deionization and its derivatives, eletrodeionization, and electrochemical advanced oxidation process. Finally, the challenges and perspectives were discussed. In this context, electrochemical processes have proven promising and effective for the treatment of water and wastewater, allowing safe reuse practices and purification with high contaminant removal.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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