Kinetic Models of Hydrogen Production Process by Batch Anaerobic Fermentation from Contained Sugar Wastewater

Abstract

The processes of biomass growth, hydrogen production and sucrose degradation were systemically investigated about batch anaerobic fermentation which is based on activated sludge for a basic strain and the simulating sucrose wastewater for a substrate. The kinetics of microbial growth, hydrogen production and sucrose degradation were proposed according to the Compertz equation and the Luedeking-Piret equation. The relationship between the biomass, hydrogen and substrate were also evaluated. The results shown that the hydrogen is a main produce of the formation process which is a growth-associated, a high biomass is favorable to increasing the hydrogen yield and shortening lag time. The three kinetic models equation have a good coincidence with the experimental data, and can really reflect the hydrogen production process from wastewater contained sucrose. The results will provide helpful reference for the large-scale production and theory study of hydrogen production.