PDF(Pubmed)
Abstract：
UNASSIGNED: This work explores the dynamics of spatiotemporal changes in the taxonomic structure of biofilms and the degradation kinetics of three imidazole group compounds: carbendazim (CBZ), methyl thiophanate (MT), and benomyl (BN) by a multispecies microbial community attached to a fixed bed horizontal tubular reactor (HTR). This bioreactor mimics a permeable reactive biobarrier, which helps prevent the contamination of water bodies by pesticides in agricultural wastewater.
UNASSIGNED: To rapidly quantify the microbial response to crescent loading rates of benzimidazole compounds, a gradient system was used to transiently raise the fungicide volumetric loading rates, measuring the structural and functional dynamics response of a microbial community in terms of the volumetric removal rates of the HTR entering pollutants.
UNASSIGNED: The loading rate gradient of benzimidazole compounds severely impacts the spatiotemporal taxonomic structure of the HTR biofilm-forming microbial community. Notable differences with the original structure in HTR stable conditions can be noted after three historical contingencies (CBZ, MT, and BN gradient loading rates). It was evidenced that the microbial community did not return to the composition prior to environmental disturbances; however, the functional similarity of microbial communities after steady state reestablishment was observed.
UNASSIGNED: The usefulness of the method of gradual delivery of potentially toxic agents for a microbial community immobilized in a tubular biofilm reactor was shown since its functional and structural dynamics were quickly evaluated in response to fungicide composition and concentration changes. The rapid adjustment of the contaminants\' removal rates indicates that even with changes in the taxonomic structure of a microbial community, its functional redundancy favors its adjustment to gradual environmental disturbances.
UNASSIGNED: To rapidly quantify the microbial response to crescent loading rates of benzimidazole compounds, a gradient system was used to transiently raise the fungicide volumetric loading rates, measuring the structural and functional dynamics response of a microbial community in terms of the volumetric removal rates of the HTR entering pollutants.
UNASSIGNED: The loading rate gradient of benzimidazole compounds severely impacts the spatiotemporal taxonomic structure of the HTR biofilm-forming microbial community. Notable differences with the original structure in HTR stable conditions can be noted after three historical contingencies (CBZ, MT, and BN gradient loading rates). It was evidenced that the microbial community did not return to the composition prior to environmental disturbances; however, the functional similarity of microbial communities after steady state reestablishment was observed.
UNASSIGNED: The usefulness of the method of gradual delivery of potentially toxic agents for a microbial community immobilized in a tubular biofilm reactor was shown since its functional and structural dynamics were quickly evaluated in response to fungicide composition and concentration changes. The rapid adjustment of the contaminants\' removal rates indicates that even with changes in the taxonomic structure of a microbial community, its functional redundancy favors its adjustment to gradual environmental disturbances.
摘要：
■这项工作探索了生物膜分类学结构的时空变化动力学以及三种咪唑基团化合物的降解动力学：多菌灵（CBZ），甲基托布津（MT），和苯菌灵（BN）通过附着在固定床水平管式反应器（HTR）上的多物种微生物群落。这种生物反应器模拟了一种可渗透的反应性生物载体，这有助于防止农业废水中的农药污染水体。
■为了快速量化苯并咪唑化合物对新月加载率的微生物反应，梯度系统用于瞬时提高杀菌剂的体积负载率，根据HTR进入污染物的体积去除率，测量微生物群落的结构和功能动力学响应。
■苯并咪唑化合物的加载速率梯度严重影响了HTR生物膜形成微生物群落的时空分类结构。在经历了三个历史事件(CBZ，MT,和BN梯度加载率)。有证据表明，微生物群落没有回到环境干扰之前的组成;然而，观察到稳态重建后微生物群落的功能相似性。
■显示了对于固定在管状生物膜反应器中的微生物群落逐渐递送潜在毒性试剂的方法的有用性,因为其功能和结构动力学响应于杀真菌剂组成和浓度变化而被快速评估。污染物去除率的快速调整表明，即使微生物群落的分类结构发生变化，它的功能冗余有利于它对逐渐的环境干扰进行调整。
■为了快速量化苯并咪唑化合物对新月加载率的微生物反应，梯度系统用于瞬时提高杀菌剂的体积负载率，根据HTR进入污染物的体积去除率，测量微生物群落的结构和功能动力学响应。
■苯并咪唑化合物的加载速率梯度严重影响了HTR生物膜形成微生物群落的时空分类结构。在经历了三个历史事件(CBZ，MT,和BN梯度加载率)。有证据表明，微生物群落没有回到环境干扰之前的组成;然而，观察到稳态重建后微生物群落的功能相似性。
■显示了对于固定在管状生物膜反应器中的微生物群落逐渐递送潜在毒性试剂的方法的有用性,因为其功能和结构动力学响应于杀真菌剂组成和浓度变化而被快速评估。污染物去除率的快速调整表明，即使微生物群落的分类结构发生变化，它的功能冗余有利于它对逐渐的环境干扰进行调整。
