Laboratoire Ampère, École Centrale de Lyon, 36 Avenue Guy de Collongue, 69134 Ecully, France.
Laboratory of Environmental Engineering, Process Engineering Department, Faculty of Engineering, Badji Mokhtar-Annaba University, P.O. Box 12, Annaba 23000, Algeria.
Molecules. 2021 Jun 30;26(13):4013. doi: 10.3390/molecules26134013.
A novel approach allowing the production of electrical energy by an advanced oxidation process is proposed to eliminate organic micropollutants (MPs) in wastewaters. This approach is based on associating the Galvano-Fenton process to the generation of electrical power. In the previous studies describing the Galvano-Fenton (GF) process, iron was directly coupled to a metal of more positive potential to ensure degradation of organic pollutants without any possibility of producing electrical energy. In this new approach, the Galvano-Fenton process is constructed as an electrochemical cell with an external circuit allowing recovering electrons exchanged during the process. In this study, Malachite Green (MG) dye was used as a model of organic pollutant. Simultaneous MG degradation and electrical energy production with the GF method were investigated in batch process. The investigation of various design parameters emphasis that utilization of copper as a low-cost cathode material in the galvanic couple, provides the best treatment and electrical production performances. Moreover, these performances are improved by increasing the surface area of the cathode. The present work reveals that the GF process has a potential to provide an electrical power density of about 200 W m. These interesting performances indicate that this novel Energy-from-Waste strategy of the GF process could serve as an ecological solution for wastewater treatment.
一种通过先进氧化工艺生产电能以去除废水中有机微量污染物 (MPs) 的新方法被提出。该方法基于将电芬顿 (Galvano-Fenton) 工艺与电能生成相结合。在描述电芬顿 (GF) 工艺的先前研究中，铁直接与具有更高正电位的金属偶联，以确保有机污染物的降解，而不会产生任何电能的可能性。在这种新方法中，电芬顿工艺构建为一个带有外部电路的电化学电池，允许回收过程中交换的电子。在这项研究中，孔雀石绿 (MG) 染料被用作有机污染物的模型。在批处理过程中，用 GF 法同时研究了 MG 的降解和电能的产生。对各种设计参数的研究强调，在原电池中使用铜作为低成本阴极材料，可提供最佳的处理和电力生产性能。此外，通过增加阴极的表面积可以提高这些性能。本工作表明，GF 工艺具有提供约 200 W m 电能密度的潜力。这些有趣的性能表明，GF 工艺的这种新型从废水中获取能源的策略可以作为废水处理的生态解决方案。
