Decolorization of dye wastewater before discharge is pivotal because of its immense color and toxicities. In this study, a granular activated carbon based microbial fuel cell (GACB-MFC) was used without using any expensive materials like Nafion membrane and platinum catalyst for simultaneous decolorization of real dye wastewater and bioelectricity generation. After 48 hours of GACB-MFC operation, 73% color was removed at anode and 77% color was removed at cathode. COD removal was 71% at the anode and 76% at the cathode after 48 hours. Toxicity measurements showed that cathode effluent was almost nontoxic after 24 hours. The anode effluent was threefold less toxic compared to original dye wastewater after 48 hours. The GACB-MFC produced a power density of 1.7 W/m(3) with an open circuit voltage 0.45 V. One of the advantages of the GACB-MFC system is that pH was automatically adjusted from 12.4 to 7.2 and 8.0 at the anode and cathode during 48 hours operation.

中文翻译：

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基于颗粒活性炭的微生物燃料电池用于染料废水和发电同时脱色

染料废水在排放前脱色是关键，因为它具有巨大的颜色和毒性。在这项研究中，使用颗粒活性炭基微生物燃料电池 (GACB-MFC)，不使用任何昂贵的材料，如 Nafion 膜和铂催化剂，用于同时脱色真正染料废水和生物发电。GACB-MFC 运行 48 小时后，阳极去除了 73% 的颜色，阴极去除了 77% 的颜色。48 小时后，阳极的 COD 去除率为 71%，阴极的 COD 去除率为 76%。毒性测量表明阴极流出物在 24 小时后几乎无毒。48 小时后，阳极流出液的毒性是原始染料废水的三倍。GACB-MFC 产生的功率密度为 1.7 W/m(3)，开路电压为 0.45 V。