A systematic diagnosis of state of the art in the use of electrocoagulation as a sustainable technology for pollutant treatment: An updated review

Article

Mousazadeh, Milad, Naghdali, Zohreh, Al-Qodah, Zakaria, Alizadeh, S. M., Karamati Niaragh, Elnaz, Malekmohammadi, Sima, Nidheesh, P. V., Roberts, Edward P. L., Sillanpää, Mika and Mahdi Emamjomeh, Mahdi. 2021. "A systematic diagnosis of state of the art in the use of electrocoagulation as a sustainable technology for pollutant treatment: An updated review." Sustainable Energy Technologies and Assessments. 47. https://doi.org/10.1016/j.seta.2021.101353
Article Title

A systematic diagnosis of state of the art in the use of electrocoagulation as a sustainable technology for pollutant treatment: An updated review

ERA Journal ID211399
Article CategoryArticle
AuthorsMousazadeh, Milad, Naghdali, Zohreh, Al-Qodah, Zakaria, Alizadeh, S. M., Karamati Niaragh, Elnaz, Malekmohammadi, Sima, Nidheesh, P. V., Roberts, Edward P. L., Sillanpää, Mika and Mahdi Emamjomeh, Mahdi
Journal TitleSustainable Energy Technologies and Assessments
Journal Citation47
Article Number101353
Number of Pages24
Year2021
Place of PublicationNetherlands
ISSN2213-1388
2213-1396
Digital Object Identifier (DOI)https://doi.org/10.1016/j.seta.2021.101353
Web Address (URL)https://www.sciencedirect.com/science/article/pii/S2213138821003635
Abstract

Electrocoagulation (EC) and electrocoagulation-flotation (ECF) are of widespread interest owing to their effectiveness for the simultaneous abatement of a broad range of pollutants in drinking and waste waters, but their capability can vary significantly depending on the operating conditions. The effect of operating conditions on the performance of EC has been the subject of much debate over the last few decades. This review aims to focus on the application of EC/ECF processes for pollutants removal under different operating conditions, emphasizing the principal issues that compose the foundation of EC/ECF. It has been found that the current density (typically 1–20 mA/cm2), type of electrode (Al or Fe), and electrolysis time are the key process parameters that influence performance. Although some key mechanisms of pollutant abatement in EC/ECF processes have been identified, recent studies have begun to reveal how the underlying removal mechanisms using the EC/ECF processes depend on the nature of pollutant. Key mechanisms of pollutant abatement include charge neutralization, reduction–oxidation, and precipitation/co-precipitation. The development of improved or innovative cell designs, as well as systematic modeling of EC reactors, are needed. Future research focused on hybrid technologies with cost-effective energy supply may lead to innovative treatment options for wastewater treatment.

KeywordsElectrocoagulation; Electrocoagulation-flotation; Contaminant removal; Operating conditions; Drinking and waste waters treatment
Contains Sensitive ContentDoes not contain sensitive content
ANZSRC Field of Research 2020370799. Hydrology not elsewhere classified
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Byline AffiliationsQazvin University of Medical Sciences, Iran
Al-Balqa Applied University, Jordan
Australian College of Kuwait, Kuwait
Amirkabir University of Technology, Iran
K. N. Toosi University of Technology, Iran
National Environmental Engineering Research Institute (NEERI), India
University of Calgary, Canada
Duy Tan University, Vietnam
School of Engineering
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