Sustainable hydrogen production options from food wastes
Makaleler > Tam Makale · 2018
Yazarlar: Gözde DUMAN TAÇ, Koray AKARSU, Alper YILMAZER, TUĞBA KESKİN GÜNDOĞDU, Nuri AZBAR, Jale YANIK
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, SCI Expanded İndekslerine Giren Dergi, Uluslararası, 2018, cilt 43, ss 10595-10604
DOI: 10.1016/j.ijhydene.2017.12.146
Özet
In this study, two thermochemical processes, namely steam gasification and supercritical water gasification (SCWG), were comparatively studied to produce hydrogen from food wastes containing about 90% water. The SCWG experiments were performed at 400 and 450 degrees C in presence of catalyst (Trona, K2CO3 and seaweed ash). The maximum hydrogen yield was obtained at 450 degrees C in presence of K2CO3 catalyst. In second process, hydrothermal carbonization was used to convert food wastes into a high-quality solid fuel (hydrochar) that was further gasified in a dual-bed reactor in presence of steam. The steam gasification of hydrochar was carried out with and without catalysts (iron-ceria catalyst and dolomite). The maximum hydrogen yield obtained from steam gasification process was 28.08 mmol/g dry waste, about 7.7 times of that from SCWG. This study proposed a new concept for hydrogen production from wet biomass, combination of hydrothermal carbonization following steam gasification. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.