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通过在不同生物膜结构内的微藻-细菌相互作用诱导的增强协同减少污染和碳固定的机制

Chao Li¹, Kang Liu¹, Xinming Wu¹

¹Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing 210098, China; College of Environment, Hohai University, Nanjing 210098, China.

Journal of environmental management

|December 26, 2025

概括

将细菌添加到微藻生物膜中,通过增强碳固定和污染物去除,显著提高了废水处理. 分层微藻-细菌生物膜 (SMBB) 在生物质和二氧化碳捕获方面表现最好.

科学领域:

环境生物技术环境生物技术
微生物学微生物学
生物修复是一种生物修复.

背景情况:

微藻可以在废水处理中同时去除污染物和固定碳.
非微生物藻类系统在性能和生物膜粘附方面表现出局限性.
细菌可以充当调解者,以提高微藻系统的效率.

研究的目的:

研究微藻-细菌生物膜不同空间结构背后的机制.
评估细菌引入对污水处理中的微藻性能的影响.
为了比较混合 (HMBB) 和分层 (SMBB) 微藻-细菌生物膜的有效性.

主要方法:

无微生物微藻生物膜 (UMB) 与混合 (HMBB) 和分层 (SMBB) 微藻-细菌生物膜的比较.
对二氧化碳固定速率,生物质积累和细胞外聚合物质 (EPS) 组成 (蛋白质和多糖) 的分析.
研究微藻-细菌相互作用,包括与碳固定和代谢相关的基因表达.

主要成果:

与UMB相比,SMBB和HMBB显著增强了CO2固定 (分别为35.30%和31.50%) 和生物质 (分别为93.0 mg/g和77.6 mg/g).
SMBB显示微藻光合作用活性和EPS的最大增加,蛋白质和多糖度分别比HMBB高43.27%和17.45%.
细菌注射改善了生物膜粘附性,碳捕集和污染物去除效率,SMBB显示出最显著的好处.

结论:

细菌的引入增强了微藻生物膜的附着性,碳捕集和废水处理中的污染物去除.
与混合生物膜和非微生物系统相比,分层微藻-细菌生物膜 (SMBB) 的性能优越.
微藻-细菌相互作用涉及细菌丰富,调节藻类代谢,改善营养循环.

关键词:

碳固化是一种碳固化的方法.相互作用的机制.微藻-细菌系统微藻-细菌系统分层生物膜是分层生物膜.对转录组进行分析.

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