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| 1 | 微生物降解磺胺甲恶唑的研究进展显示文摘抗生素是一类难降解、低浓度就有高生态毒性效应的化合物,近年来被归为新型环境污染物,其环境残留与去除备受关注。作为广泛使用的抗生素之一,磺胺甲恶唑在水土环境中的残留量不断增加,检出率也越来越高。研究表明,磺胺甲恶唑是少数几种可被微生物降解的抗生素之一,微生物降解法是最具潜力的残留磺胺甲恶唑去除手段。本文总结了磺胺甲恶唑在土壤、沉积物、活性污泥、混合菌群、酶等条件下的降解及已分离的具有降解能力的单菌株对磺胺甲恶唑的降解情况,包括其降解效率、降解条件等,归纳了目前磺胺甲恶唑微生物降解的主要分类,并讨论了影响磺胺甲恶唑降解的两个特有因素。指出从分子生物学及生物信息学角度研究其降解途径,降解菌、降解菌群的人工构建及其在含磺胺甲恶唑污水处理中的应用与效果评价等应为今后磺胺甲恶唑生物降解与应用研究的重点。 | 闫雷 梁斌 王爱杰 刘双江 刘志培 | 2020 | 微生物学报2020，60，12： | 6 |
| 2 | Biofilm response and removal via the coupling of visible-light-driven photocatalysis and biodegradation in an environment of sulfamethoxazole and Cr(Ⅵ)显示文摘The widespread contamination of water systems with antibiotics and heavy metals has gained much attention.Intimately coupled visible-light-responsive photocatalysis and biodegradation(ICPB)provides a novel approach for removing such mixed pollutants.In ICPB,the photocatalysis products are biodegraded by a protected biofilm,leading to the mineralization of refractory organics.In the present study,the ICPB approach exhibited excellent photocatalytic activity and biodegradation,providing up to~1.27 times the degradation rate of sulfamethoxazole(SMX)and 1.16 times the Cr(Ⅵ)reduction rate of visiblelight-induced photocatalysis.Three-dimensional fluorescence analysis demonstrated the synergistic ICPB effects of photocatalysis and biodegradation for removing SMX and reducing Cr(Ⅵ).In addition,the toxicity of the SMX intermediates and Cr(Ⅵ)in the ICPB process significantly decreased.The use of MoS_(2)/CoS_(2)photocatalyst accelerated the separation of electrons and holes,with·O_(2)^(–)and h+attacking SMX and ereducing Cr(Ⅵ),providing an effective means for enhancing the removal and mineralization of these mixed pollutants via the ICPB technique.The microbial community results demonstrate that bacteria that are conducive to pollutant removal are were enriched by the acclimation and ICPB operation processes,thus significantly improving the performance of the ICPB system. | Liushu Pan ZhouWan Qilin Feng Jue Wang Jianhua Xiong Shuangfei Wang Hongxiang Zhu Guoning Chen | 2022 | Journal of Environmental Sciences2022，34，12： | 2 |
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