Electrocoagulation with aluminum screen mesh electrodes for oil removal from oil-in-water emulsion

IF 3.8 3区工程技术 Q3 ENERGY & FUELS

Chemical Engineering and Processing - Process Intensification Pub Date : 2025-01-21 DOI:10.1016/j.cep.2025.110188

Marcelly da Conceição Thomes , Igor Gomes da Silva , André Lucas Ribeiro da Silva Loures , José Rafael Capua Proveti , Cleocir José Dalmaschio , Edson C. Passamani , Paulo Sérgio da Silva Porto , Eduardo Perini Muniz

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引用次数: 0

Abstract

Concentric cylindrical mesh screen electrodes were effectively used in the electrocoagulation (EC) method to treat machine oil effluents in a static batch system. A 3² experimental design was used with electric voltage (V_a) and polarity inversion time (t_pi) as input variables. Therefore, this work focused on the optimization of power consumption, electrode mass loss, oil content, and turbidity, maintaining pH within international standards. Monitoring pH evolution provided insights into the EC kinetics. This innovative geometry achieved a low energy consumption of about (2.5 ± 0.4) W, a specific energy requirement of (2.2 ± 0.2) kWh/kg for an oil content reduction of (91 ± 4) % and (97 ± 2) % turbidity reduction. These results stemmed from factors like the fast kinetics described by a Boltzmann sigmoidal function and the lack of a passivation layer to increase power consumption. Therefore, our results bring a strong contribution to treatments in static batch processes of oil emulsions in effluents.

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来源期刊

Chemical Engineering and Processing - Process Intensification 工程技术-工程：化工

CiteScore

7.80

自引率

9.30%

发文量

408

审稿时长

49 days

期刊介绍： Chemical Engineering and Processing: Process Intensification is intended for practicing researchers in industry and academia, working in the field of Process Engineering and related to the subject of Process Intensification.Articles published in the Journal demonstrate how novel discoveries, developments and theories in the field of Process Engineering and in particular Process Intensification may be used for analysis and design of innovative equipment and processing methods with substantially improved sustainability, efficiency and environmental performance.