Feasibility of biological hydrogen production from organic fraction of municipal solid waste

Bio-hydrogen production from thin stillage using conventional and acclimatized anaerobic digester sludge

“…Hafez et al [10] observed the same pattern of a maximum SHPR followed by a sharp decline at high S 0 /X 0 ratio using the authors' data as well as seven other literature studies. The findings of this study contradicts the observations of Jiunn et al [34] who studied hydrogen production using organic fraction of municipal solid waste (OFMSW) as the substrate and two types of sludges at different mixing ratios; i n t e r n a t i o n a l j o u r n a l o f h y d r o g e n e n e r g y 3 6 ( 2 0 1 1 ) 1 2 7 6 1 e1 2 7 6 9 pre-treated anaerobic digester sludge and acclimatized sludge from a hydrogen producing chemostat reactor with an HRT of 10 h and sucrose as the substrate, and reported no trend for the SHPR with increasing the acclimated sludge percentage. Table 5 shows the kinetics from the Gompertz model [34] for both batches using ADS and AADS.…”

Reverse osmosis processing of organic model compounds and fermentation broths

“…The fermentation broth resulting from the biohydrogen process contains a variety of suspended and dissolved organic and inorganic compounds that must be removed for water recovery and reuse. The dissolved organic species typically include C1 to C6 mono-or dicarboxylic acids (in both salt and acid forms) and alcohols (Lay et al, 1999;Chen and Lin, 2003;Valdez-Vazquez et al, 2005). In biohydrogen production experiments conducted in the batch mode, total organic carbon (TOC) of the fermentation broth was typically as high as 20,000 mg/ L. Of this TOC total, the volatile acids and alcohols contribute about 30% and 10%, respectively.…”

Performance of an Innovative Two-Stage Process Converting Food Waste to Hydrogen and Methane

“…In addition, H 2 can be directly used to produce electricity through fuel cells. 2,3 H 2 can be generated in a number of ways, such as electrochemical processes, thermochemical processes, photochemical processes, photocatalytic processes, or photoelectrochemical processes. 4,5 However, these processes require electricity derived from fossil-fuel combustion; thus, they are energy-intensive and expensive.…”