Biogas (methane) as a source of renewable energy, was produced in the anaerobic co-digestion of blackwater (BW, municipal toilet wastewater) and organic kitchen waste (KW). The impact on methane production of various BW to KW mixing ratios, with and without the addition of granular activated carbon (GAC), were studied under thermophilic (55 °C) temperatures. GAC is reported to enhance methane production in such digestions through direct interspecies electron transfer. The results showed that the co-digestion of BW and KW under the 1:2 VS ratio significantly improved the biomethane potential (BMP). In the absence of GAC, an optimal BW:KW ratio was found to be 1:2, achieving a BMP of 0.76 g CH₄-COD/g feed-COD. With GAC addition, the BMP increased to 0.81 g CH₄-COD/g feed-COD, the lag phase in the digestion was significantly reduced, and the methane production rate increased. Microbial communities in the BW-KW anaerobic digestion were analyzed with and without the addition of GAC. Methanothermobacter and Methanosarcina were predominant archaea in BW-KW digests, with and without GAC amendment, while a third methanogen, Methanomassiliicoccus, was enriched with the addition of GAC to the digest. Further, through SEM image, the enrichment of pili-like stucture was observed in GAC surface.

沼气（甲烷）作为一种可再生能源，是在黑水（BW，市政厕所废水）和有机厨余垃圾 (KW) 的厌氧共同消化过程中产生的。在嗜热 (55 °C) 温度下研究了添加和不添加颗粒活性炭 (GAC) 的各种 BW 与 KW 混合比对甲烷产量的影响。据报道，GAC 可通过直接的种间电子转移来提高此类消化中的甲烷产量。结果表明，在 1:2 VS 比例下，BW 和 KW 的共消化显着提高了生物甲烷潜力（BMP）。在没有 GAC 的情况下，发现最佳 BW:KW 比为 1:2，实现了 0.76 g CH ₄ -COD/g 进料-COD的 BMP 。添加 GAC 后，BMP 增加到 0.81 g CH ₄-COD/g进料-COD，消化滞后期明显减少，甲烷产率提高。在添加和不添加 GAC 的情况下分析 BW-KW 厌氧消化中的微生物群落。Methanothermobacter和Methanosarcina是 BW-KW 消化物中的主要古细菌，有和没有 GAC 修正，而第三种产甲烷菌Methanomassiliicoccus则通过在消化物中添加 GAC 来富集。此外，通过SEM图像，在GAC表面观察到菌毛状结构的富集。