摘要
      研究了生物炭在不同总固体（TS）条件下对猪粪和脱水污泥共消化的影响。生物炭可以加速甲烷生成的启动，缩短适应阶段。在TS5%时，生物炭组的甲烷日产量比对照组高60.6%；然而，当TS增加时，两组之间的差距逐渐缩小。此外，抗生素抗性基因（ARGs）的变化也受到TS和生物炭添加的影响。此外，生物炭有利于减少液相中的ARGs。在TS14%时，生物炭组液相中的总ARGs丰度比对照组低41.4%，其中etB（P）、sul1、rpoB2、macA、mupA和mupB的降低率更为显著。这些发现可以为在ARGs释放到环境中之前制定消除ARGs的战略提供有用的指导。
Abstract
Effects of biochar on co-digestion of pig manure and dewatered sewage sludge under different total solids (TS) were investigated. Biochar could accelerate the start-up of methanogenesis and shorten the adaptation phase. At TS5%, the methane daily production in biochar group was 60.6% higher than the control; nevertheless, when TS increased, the gap between two groups gradually narrowed. Additionally, the change on antibiotics resistance genes (ARGs) was also affected by TS and the biochar addition. Moreover, biochar was beneficial to reduce ARGs in liquid phase. At TS14%, the total ARGs abundance in the liquid phase of biochar group was 41.4% lower than the control, among which the reduction rates of etB(P), sul1, rpoB2, macA, mupA and mupB were more prominent. These findings could provide useful guidance for developing ARGs elimination strategy before their release into the environment.

https://www.sciencedirect.com/science/article/abs/pii/S0960852421017429