Endogenous quorum sensing orchestrates microbial social behaviors for anaerobic digestion adaptation to temperature reduction.
AI summary
75% confidenceThis MES study investigates Anaerobic digestion, Microbial community, Microbial social behavior. The research focuses on system optimization and characterization.
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Abstract
Anaerobic digestion (AD) offers a cost-effective and efficient approach for wastewater treatment, but the mesophilic anaerobic digestion only well performed within a narrow temperature range, typically between 30 and 40 °C. However, lower temperatures affected the performance of AD, microbial community and granular sludge properties. Recent studies mainly focused on adding exogenous quorum sensing (QS) signal molecules to accelerate the recovery of anaerobic digestion performance under pressure conditions, while few studies on endogenous QS molecules. To investigate microbial stress adaptation mediated by endogenous QS system under stepwise temperature reduction, an Upflow Anaerobic Sludge Blanket (UASB) reactor with gradual temperature reduction from 35 to 20 °C was constructed.