Abstract：
This study examined the elimination of sulfonamide antibiotics (SAs) by constructed wetland substrates with NaOH-modified corn straw biochar and assessed the impact of environmental conditions on the effectiveness of SAs removal. The study demonstrated that the constructed wetland substrate with NaOH-modified biochar significantly eliminated eight SAs, with a removal rate of over 94 %. During the removal process, the intermediates will undergo regeneration of the parent compounds under low DO concentrations. This was based on the linear stepwise regression analysis and Geodetector models. The results showed that SA types COD, NH4+-N, TN, and DO had a stronger influence. The dominant bacteria in the constructed wetland system were mainly affected by antibiotic concentration, DO, NH4+-N and NO3--N, which affected the removal of antibiotics. Overall, the constructed wetland substrate with NaOH-modified corn straw biochar can be effectively employed as an ecological method for eliminating SAs from the environment.
摘要：
这项研究检查了使用NaOH改性的玉米秸秆生物炭的人工湿地基质消除磺胺类抗生素（SAs），并评估了环境条件对SAs去除效果的影响。研究表明，NaOH改性生物炭的人工湿地基质显著消除了8种SAs，去除率超过94%。在移除过程中,中间体将在低DO浓度下经历母体化合物的再生。这是基于线性逐步回归分析和地理检测器模型。结果表明,SA型COD,NH4+-N,TN,并产生了更大的影响。人工湿地系统中的优势菌主要受抗生素浓度的影响,DO,NH4+-N和NO3--N,这影响了抗生素的去除。总的来说,NaOH改性玉米秸秆生物炭的人工湿地基质可以有效地用作从环境中消除SAs的生态方法。
