Zhang Yangkai, Cao Liu, Fu Haibin, Zhang Min, Meng Jun, Althakafy Jalal T, Abo-Dief Hala M, El-Bahy Salah M, Zhang Yushun, Wei Huanhuan, Xu Ben Bin, Guo Zhanhu
College of Engineering, Shenyang Agricultural University, Shenyang, 110866, China.
Department of Animal Science, University of Tennessee, Knoxville, 37996, USA.
Chemosphere. 2022 Nov;306:135567. doi: 10.1016/j.chemosphere.2022.135567. Epub 2022 Jul 2.
Antibiotic contamination from animal production and wastewater treatment process will release antibiotic resistant genes to the environment and potentially threaten human health. Meanwhile, the residual antibiotic in manure could have inactive impacts on anaerobic digestion (AD). This study explores the effect of sulfamethazine on manure AD mediated by biochar. The results show that biochar weakens the adverse effects of sulfamethazine on AD by adsorption sulfamethazine during the initial stage (0-3 days) of AD and promoting the growth of hydrolytic bacteria (especially Firmicutes and Bacteroidetes) and methanogens (especially Methanothrix and Methanosarcina). Besides, the presence of biochar improves the biogas production capacity of AD and promotes microbial diversity and community richness. Thus, the addition of biochar greatly reduces sulfamethazine and is testified to be a desirable strategy to mitigate the inhibition of sulfamethazine on AD.
来自动物养殖和废水处理过程的抗生素污染会将抗生素抗性基因释放到环境中，并可能威胁人类健康。同时，粪便中的残留抗生素可能对厌氧消化（AD）产生负面影响。本研究探讨了磺胺二甲嘧啶对生物炭介导的粪便厌氧消化的影响。结果表明，生物炭在厌氧消化的初始阶段（0-3天）通过吸附磺胺二甲嘧啶以及促进水解细菌（特别是厚壁菌门和拟杆菌门）和产甲烷菌（特别是甲烷丝状菌属和甲烷八叠球菌属）的生长，减弱了磺胺二甲嘧啶对厌氧消化的不利影响。此外，生物炭的存在提高了厌氧消化的沼气生产能力，并促进了微生物多样性和群落丰富度。因此，添加生物炭能大幅降低磺胺二甲嘧啶的含量，被证明是减轻磺胺二甲嘧啶对厌氧消化抑制作用的理想策略。
