数字农科院2.0

Tetracycline removal by immobilized indigenous bacterial consortium using biochar and biomass: Removal performance and mechanisms

文献类型： 外文期刊

作者： Xinping Yu;Mohan Bai;Xiaojing Li;Pinpin Yang;Qiuzhen Wang;Zhennan Wang;Liping Weng;Huike Ye

作者机构：

关键词： Antibiotics;Biodegradation;Catalase;Immobilized microbial consortia;Microbial community composition

期刊名称： Bioresource Technology

ISSN： 0960-8524

年卷期： 2024 年 413 卷

页码：

收录情况： SCIE（2024版） ; ; EI（2024版）

摘要： The significant influx of antibiotics into the environment represents ecological risks and threatens human health. Microbial degradation stands as a highly effective method for reducing antibiotic pollution. This study explored the potential of immobilized microbial consortia to efficiently degrade tetracycline. Concurrently, the suitability of different immobilization materials were assessed, with reed charcoal-immobilized consortia exhibiting the highest efficiency in removing tetracycline (92%). Similarly, wheat-bran-loaded bacterial consortia displayed a remarkable 11.43-fold increase in tetracycline removal compared with free consortia. Moreover, adding the carriers increased the nutrients, while the activities of both intracellular and extracellular catalases increased significantly post-immobilization, thus highlighting this enzyme's crucial role in tetracycline degradation. Finally, analysis of the microbial communities revealed the prevalence of Achromobacter and Parapedobacter, signifying their potential as key degraders. Overall, the immobilized consortia not only hold promise for application in the bioremediation of tetracycline-contaminated environment but also provide theoretical underpinnings for environmental remediation by microorganisms.

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