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 (KOH, NaOH, LiOH and K2CO3) 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 (with samples digested at 45°C) in the absence of catalyst as 84.6 (g C in gaseous/g C in digestate), 53.0 (mol H2%) and 12.5 (mol CH4%), respectively. High organic content of digested biomass was converted by supercritical water gasification to hydrogen and methane rich gas, and aqueous products (aliphatic hydrocarbons, phenol, substituted phenols, N-heterocyclic, substituted N-heterocyclics, and substituted benzene) that can be evaluated as platform chemicals.
Alan : Fen Bilimleri ve Matematik; Mühendislik; Sağlık Bilimleri
Dergi Türü : Uluslararası
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