Synergy between Electrocoagulation (EC) and Magnetic Separation for the Treatment of Oily Wastewater

IF 4.3 Q1 ENVIRONMENTAL SCIENCES

ACS ES&T water Pub Date : 2025-07-19 DOI:10.1021/acsestwater.5c00635

Dâmaris Vieira, Marcelo Silveira Bacelos, Flavio Duarte Couto Oliveira, Eduardo Perini Muniz and Paulo Sérgio da Silva Porto*,

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Abstract

Produced water, a byproduct of oil extraction, contains highly emulsified oils that offer serious environmental risks if discharged untreated. Efficient treatment of such oily wastewater is crucial for sustainability in oil-producing industries facing the upcoming challenges of offshore scale production. Therefore, the novelty of this research lies in its application of cobalt ferrite to the electrocoagulation (EC) process, where it not only aids in oil and turbidity removal but also increases electrode stability through electrophoretic deposition. Experimental results reveal that the ferrite-enhanced EC achieves high removal efficiencies, reaching 94% for oil and 98 ± 2% for turbidity under the tested operating conditions. Moreover, cobalt ferrite integration allowed for stable pH and low energy consumption (3.5–5.5 kWh·m^–3), demonstrating the cost-effectiveness of treatment. These findings highlight cobalt ferrite-enhanced EC as a promising technology for managing oily wastewater, offering a viable solution for industrial applications demanding compact and efficient wastewater treatment.

An innovative treatment of oily wastewater involving cobalt ferrite to improve the quality of makeup water for industrial reuse is described.

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电絮凝与磁分离协同处理含油废水

采出水是采油的副产品，其中含有高度乳化油，如果未经处理就排放，会给环境带来严重风险。面对即将到来的海上规模生产挑战，有效处理这些含油废水对于石油生产行业的可持续性至关重要。因此，本研究的新颖之处在于将钴铁氧体应用于电混凝（EC）工艺，不仅有助于除油和除浊，而且通过电泳沉积提高了电极的稳定性。实验结果表明，在实验条件下，铁素体增强EC对油的去除率达到94%，对浊度的去除率达到98±2%。此外，钴铁氧体集成可以实现稳定的pH值和低能耗（3.5-5.5 kWh·m-3），证明了处理的成本效益。这些发现强调了钴铁素体增强EC作为一种有前途的含油废水管理技术，为要求紧凑高效的废水处理的工业应用提供了可行的解决方案。介绍了一种含钴铁氧体的创新性含油废水处理方法，以提高工业回用补给水的质量。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

ACS ES&T water

CiteScore

5.40

自引率

0.00%

发文量