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Effect of biochar on antibiotic resistance genes in the anaerobic digestion system of antibiotic mycelial dreg

文献类型：外文期刊

第一作者： Li, Yue

作者： Li, Yue;Zhong, Weizhang;Ning, Zhifang;Niu, Jianrui;Li, Zaixing;Li, Yue;Zhong, Weizhang;Ning, Zhifang;Niu, Jianrui;Li, Zaixing;Feng, Jing

作者机构：

关键词： Modified biochar; Reinforcement; Resistance mechanism; Microbial community structure

期刊名称：BIORESOURCE TECHNOLOGY （影响因子：11.889；五年影响因子：11.139 ）

ISSN： 0960-8524

年卷期： 2022 年 364 卷

页码：

收录情况： SCI

摘要： To address the problem of antibiotic mycelial dreg (AMD) treatment and removal of antibiotic resistance genes (ARGs), this study adopted anaerobic digestion (AD) technology, and added biochar (BC) and biochar loaded with nanosized zero-valent iron (nZVI-BC) to promote the AD of AMD and enhance the removal of ARGs. Results showed that nZVI-BC was better than BC in promoting AD due to the hydrogen evolution corrosion and the synergistic effect of nZVI and BC. In addition, BC and nZVI-BC can enhance the oxidative stress response and reduce ammonia stress phenomenon, which significantly reduces the abundance of aadA, ant(2 '')-I, qacEdelta1 and sul1. In conclusion, the enhance effect of nZVI-BC is greater than BC. The removal efficiency rates of nZVI-BC on the above-mentioned four ARGs were improved by 33%, 9%, 24% and 11%.

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