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Analysis of the Efficiency of the Electrocoagulation Process in the Removal of Microplastics

Revista de Gestão Social e Ambiental 2023 8 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count.
Francisco Javier Cuba Terán, Vinicius Augusto Amaral Mosque, Layane de Fátima da Silva Pereira Oliveira, Renata Medici Frayne Cuba

Summary

Researchers demonstrated that electrocoagulation using aluminum electrodes can remove up to 90% of microplastic glitter particles from water, with efficiency increasing as electrical conductivity and current intensity rise. This low-cost, chemical-free approach shows strong potential as a practical treatment step for removing microplastics from water without adding secondary contaminants.

Purpose: The purpose of this study was to apply electrocoagulation with aluminum electrodes to evaluate the removal efficiency of microplastic in the form of Glitter. Method: This study consisted of an experimental system, composed of a benchtop scale reactor, with aluminum electrodes inside, connected to a direct current source, responsible for performing the water electrolysis process, forming microbubbles and the chemical coagulation process, contributing to the formation of microplastic aggregates Results and conclusion: The results showed high efficiency of microplastic removal in the form of glitter that increased proportionally with the increase in conductivity and current intensity. The maximum efficiency achieved was equal to 90.3%. Implications of the research: As demonstrated by the results of the experimental assays, the electrocoagulation technique proved to be very efficient to make the removal of microplastic in the form of glitter. Originality/value: It has been shown that it is possible to remove microplastic in an efficient way, without the need for the introduction of an external coagulant because it was generated within the system itself.

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