Temperature dependent (37-15 °C) anaerobic digestion of a trichloroethylene-contaminated wastewater

► Successful treatment of TCE at 15 °C at influent TCE concentrations of 50 mg l−1. ► Reductive dechlorination of TCE favours the production of cis-1,2 DCE. ► Temperature is a more significant driver of microbial community dynamics than the presence of TCE. ► Clones related to cold adaptation of granular biomass were only detected at 15 °C.