摘要

       研究了活性炭 (AC) 添加对食物垃圾厌氧消化 (AD) 过程中沼气产生、细菌病原体去除和抗生素抗性基因 (ARG) 的影响。 结果表明，添加 AC (R1) 的厌氧消化器在 4.38 g VSFW/L/d 的高有机负载率下保持稳定运行，甲烷产量为 0.35 L CH4/L/g VS，而对照消化器稳定性较差并导致酸化。 一些特定的优势细菌在 R1 中富集，导致微生物生物多样性较低。 在污泥样品中共检测到 11 种细菌病原体和 12 种 ARG。 与对照相比，添加 AC 通过将细菌病原体的相对丰度降低 18% 来增强 AD 过程。 此外，补充 AC 还有助于减少丰富的 ARG，包括 tetA、tetM、tetW、tetO、tetQ、sul2 和 tetX。 该研究可能为添加AC的AD提供一种生态治疗方法。

       Effects of activated carbon (AC) addition on biogas production, bacterial pathogens removal and antibiotic resistance genes (ARGs) during anaerobic digestion (AD) for food waste were investigated. Results indicate that anaerobic digesters with AC addition (R1) maintained stable operation with methane yield of 0.35 L CH4/L/g VS at high organic loading rate of 4.38 g VSFW/L/d while the control digesters displayed less stability and caused acidification. Some specific dominant bacteria were enriched in R1, resulting in a lower microbial biodiversity. A total of 11 bacterial pathogens and 12 ARGs was detected in the sludge samples. Compared to the control, adding AC enhanced the AD process by decreasing the relative abundance of bacterial pathogens by 18%. Moreover, AC supplementation also facilitated reduction of abundant ARGs, including tetA, tetM, tetW, tetO, tetQ, sul2 and tetX. This study may provide an ecological treatment method for AD with the addition of AC.

https://www.sciencedirect.com/science/article/abs/pii/S1369703X17302243