Metagenomic characterization of the enhanced performance of anaerobic fermentation of waste activated sludge with CaO2 addition at ambient temperature: Fatty acid biosynthesis metabolic pathway and CAZymes

This study investigated the chemical and genetic mechanisms of anaerobic fermentation of waste activated sludge (WAS) with CaO2 addition at ambient temperature. The microbial community structures, key microorganisms, functional profiles and related carbohydrate-active enzymes were further revealed according to metagenomic sequencing combining with 16S rRNA gene amplicon sequencing. Results showed that the prolonged period of alkaline condition...