摘要

       煤气化渣（GS）是一种具有高度发达孔隙结构的工业固体废物，由于其结构可用于厌氧消化（AD）以去除抗生素抗性基因（ARGs），从而利用这种废物资源。 本研究评估了三种 GS 水平（0、5 和 10g/L）对 ARG 丰度、可移动遗传元件和细菌群落的影响。 添加 10g/L 的 GS，AD 后 ARG（dfrA7、sul2、tetW、ermF 和 ermQ）的去除率为 24.81-90.48%，ISCR1 的去除率为 95.4%。 此外，10g/L GS 在降低潜在人类病原体的丰度方面更有效。 ARGs 的变化可能受到微生物群落演替的影响。 该研究的结果表明，补充 10g/L GS 对降低 AD 期间的 ARG 更有用。 

       Coal gasification slag (GS) is an industrial solid waste with a highly developed pore structure, which can be used in anaerobic digestion (AD) to remove antibiotic resistance genes (ARGs) due to its structure, thereby utilizing this waste resource. This study evaluated the effects of three GS levels (0, 5, and 10 g/L) on the abundances of ARGs, mobile genetic elements, and the bacterial community. With GS added at 10 g/L, the removal rates for ARGs (dfrA7, sul2, tetW, ermF, and ermQ) were 24.81–90.48% after AD, and the removal rate for ISCR1 was 95.4%. In addition, 10 g/L GS was more effective at reducing the abundances of potential human pathogens. The variations in ARGs may have been affected by the succession of the microbial community. The results of this study demonstrate that supplementation with 10 g/L GS is more useful for reducing ARGs during AD.

https://www.sciencedirect.com/science/article/abs/pii/S0960852418311556