Evaluation of Anaerobically Digested Biomass in Catalytic Supercritical Water Gasification for Biofuel Production

Authors : Tülay GÜNGÖREN MADENOĞLU

Pages : 407-421

Doi:10.18038/aubtda.376890

View : 16 | Download : 9

Publication Date : 2018-06-30

Article Type : Research Paper

Abstract :Digested water hyacinth with activated sludge as inoculum were obtained after anaerobic digestion at 35 and 45 ° C. High organic content of digested biomass were evaluated through gasification at supercritical conditions of water in the absence and presence of catalysts insert ignore into journalissuearticles values(KOH, NaOH, LiOH and K 2 CO 3 ); with 10 wt.% of volatile solid in feed. Supercritical water gasification of digested biomass was performed in batch reactor system at temperature and pressure ranges of 500 – 600 ° C and 350 –450 bar, respectively. The highest carbon gasification efficiency, hydrogen and methane yields were reached at 600 ° C insert ignore into journalissuearticles values(with samples digested at 45 ° C ); in the absence of catalyst as 84.6 insert ignore into journalissuearticles values( g C in gaseous/g C in digestate); , 53.0 insert ignore into journalissuearticles values(mol H 2 %); and 12.5 insert ignore into journalissuearticles values(mol CH 4 %);, respectively. High organic content of digested biomass was converted by supercritical water gasification to hydrogen and methane rich gas, and aqueous products insert ignore into journalissuearticles values(aliphatic hydrocarbons, phenol, substituted phenols, N-heterocyclic, substituted N-heterocyclics, and substituted benzene); that can be evaluated as platform chemicals.
Keywords : Water Hyacinth, Supercritical Water Gasification, Hydrogen, Methane