State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Key Laboratory of Vegetation Ecology of Ministry of Education, Institute of Grassland Science, Jingyue Street 2555, Changchun 130017, China.
State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Key Laboratory of Vegetation Ecology of Ministry of Education, Institute of Grassland Science, Jingyue Street 2555, Changchun 130017, China; Laboratory for Coastal Marine Eco-Environment Process and Carbon, Sink of Hainan Province/Yazhou Bay Innovation Institute/College of Ecology and Environment, Hainan Tropical Ocean University, Sanya, 572022, China; Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, China; JiLin Agricultural Science and Technology University, No. 77 Hanlin Road, Jilin Economic and Technological Development Zone, Jilin 132101, China.
Bioresour Technol. 2024 Oct;410:131274. doi: 10.1016/j.biortech.2024.131274. Epub 2024 Aug 14.
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, NH-N, TN, and DO had a stronger influence. The dominant bacteria in the constructed wetland system were mainly affected by antibiotic concentration, DO, NH-N and NO-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.
本研究考察了用 NaOH 改性玉米秸秆生物炭的人工湿地基质对磺胺类抗生素（SAs）的去除效果，并评估了环境条件对 SAs 去除效果的影响。研究表明，NaOH 改性生物炭人工湿地基质能有效去除 8 种磺胺类抗生素，去除率超过 94%。在去除过程中，低 DO 浓度下的中间体会发生母体化合物的再生。这是基于线性逐步回归分析和地理探测器模型得出的结论。结果表明，SA 类型 COD、NH-N、TN 和 DO 的影响更强。人工湿地系统中的优势菌主要受抗生素浓度、DO、NH-N 和 NO-N 的影响，这些因素影响抗生素的去除。总的来说，用 NaOH 改性玉米秸秆生物炭的人工湿地基质可以作为一种有效的生态方法，用于从环境中去除磺胺类抗生素。
