Biofilm regulation based on quorum sensing is an effective bioaugmentation method for air purification; however, it has uncertain stability and obscure deuterogenic mechanisms. A biological autocrine signaling molecule (SMH13) with a C6-HSL component was prepared based on a dichloromethane (DCM) degrader— H13—that enhanced DCM removal by 16% and maximally shortened the startup time by 39% in labscale biotrickling filters with substantially robust responses to shock loads and starvation resistance. Bioaugmentation closely correlated with increased microbial viability and activated metabolism, especially the enhanced degradation of a metabolic intermediate—HCOOH. Thus, the deuterogenic benefits of initial SMH13 addition on performance improvement was uncovered via the regulation of the microbial community and enrichment of functional genes, including the ones related to DCM removal, such as . These findings offer an innovative approach for the efficient and economical treatment of chlorinated volatile organic compounds.

中文翻译：

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通过生物自分泌信号分子进行生物膜调节及其对气态二氯甲烷降解的二次益处


基于群体感应的生物膜调节是一种有效的空气净化生物强化方法；然而，它具有不确定的稳定性和模糊的次生机制。基于二氯甲烷 (DCM) 降解剂 H13 制备了具有 C6-HSL 成分的生物自分泌信号分子 (SMH13)，该降解剂在实验室规模的生物滴滤器中将 DCM 去除率提高了 16%，并将启动时间最大缩短了 39%，并且具有相当稳健的性能。对冲击载荷和饥饿抵抗的反应。生物强化与微生物活力的增加和新陈代谢的激活密切相关，特别是代谢中间体 HCOOH 的降解增强。因此，通过微生物群落的调节和功能基因的富集，包括与 DCM 去除相关的基因，例如 .这些发现为高效、经济地处理氯化挥发性有机化合物提供了一种创新方法。