Recovering hydrogen production performance of upflow anaerobic sludge blanket reactor (UASBR) fed with galactose via repeated heat treatment strategy

摘要

Graphical abstract Enhancement of hydrogen fermentation from galactose in a continuous upflow anaerobic sludge blanket reactor (UASBR) at 80°C for 30min (Day 33) during repeated heat treatment with a hydraulic retention time (HRT) of 6h. The heat-treatment resulted in the increased hydrogen production performance by 37% and the enrichment of hydrogen producing bacteria population. Display Omitted Highlights ? Repeated heat treatment improved hydrogen production performance by 37%. ? Proteobacteria and Bacteroidetes population were significantly affected. ?