Electrocoagulation/Electroflotation Process for Removal of Organics and Microplastics in Laundry Wastewater,Clean - Soil Air Water

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Electrocoagulation/Electroflotation Process for Removal of Organics and Microplastics in Laundry Wastewater
Clean - Soil Air Water ( IF 1.5 ) Pub Date : 2020-11-19 , DOI: 10.1002/clen.202000146
Ceyhun Akarsu ₁ , Fatma Deniz ₁

Affiliation

In the present research, laundry wastewater treatment is studied using the electrocoagulation/electroflotation process. For the optimization of treatment conditions such as electrode type (Al–Al, Al–Fe, Fe–Fe, and Fe–Al), initial pH (5–9), current (0.54–2.16 A), and application time (15–60 min), response surface methodology is used. Removal efficiencies of chemical oxygen demand (COD), color, anionic surfactant, microplastic, and phosphate are studied. It is determined that the most effective removal is obtained with 2.16 A current, pH 9, and 60 min reaction time using Fe–Al electrode. Here, 91%, 94%, 100%, and 98% removal efficiencies are achieved for COD, surfactant, color, and microplastic, respectively. The operating cost of the combined process is calculated as $1.32 m⁻³ for the optimum removal parameters. The adsorption kinetics study shows that the removal follows second‐order kinetics. The laboratory‐scale test results indicate that the electrocoagulation/electroflotation process is feasible for the treatment of laundry wastewater.

中文翻译：

电凝/电浮选工艺去除洗衣废水中的有机物和微塑料

在本研究中，使用电凝/电浮法研究了洗衣废水的处理方法。为了优化处理条件，例如电极类型（Al–Al，Al–Fe，Fe–Fe和Fe–Al），初始pH（5–9），电流（0.54–2.16 A）和施加时间（15 –60分钟），使用响应面方法。研究了化学需氧量（COD），颜色，阴离子表面活性剂，微塑料和磷酸盐的去除效率。确定使用Fe-Al电极在2.16 A电流，pH 9和60分钟的反应时间下可获得最有效的去除效果。此处，COD，表面活性剂，颜色和微塑性分别达到91％，94％，100％和98％的去除效率。合并过程的运营成本计算为132万美元^-3以获得最佳去除参数。吸附动力学研究表明，去除遵循二级动力学。实验室规模的测试结果表明，电凝/电浮选工艺可用于处理洗衣废水。

更新日期：2021-01-05

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