TY - JOUR
T1 - Reactions of different food classes during subcritical water gasification for hydrogen gas production
AU - Muangrat, Rattana
AU - Onwudili, Jude A.
AU - Williams, Paul T.
PY - 2012/2/1
Y1 - 2012/2/1
N2 - The reactions of different food classes during alkaline subcritical water gasification have been investigated with a view on hydrogen gas production. Experiments were conducted with sub-stoichiometric amounts of H 2O2 for partial oxidation. NaOH was added to aid sample decomposition, reduce char/tar formation and to promote water-gas shift reaction. In general, hydrogen gas production depended on the class of food wastes including their chemical structure. Carbohydrate-rich food waste (glucose, molasses, tropical fruit mixture, whey powder) produced higher H 2 gas yields than others (proteins and lipids). Lipid-rich samples were the most difficult to decompose into gasifiable intermediates and therefore produced the lowest H2 yield. Generally, the addition of NaOH led to higher H2 generation from all sample types. However, two separate side reactions namely, neutralization and saponification involving NaOH with protein- and lipid-rich samples, respectively were significant. Hydrogen production from carbohydrate-rich samples was most suited for the reaction conditions applied.
AB - The reactions of different food classes during alkaline subcritical water gasification have been investigated with a view on hydrogen gas production. Experiments were conducted with sub-stoichiometric amounts of H 2O2 for partial oxidation. NaOH was added to aid sample decomposition, reduce char/tar formation and to promote water-gas shift reaction. In general, hydrogen gas production depended on the class of food wastes including their chemical structure. Carbohydrate-rich food waste (glucose, molasses, tropical fruit mixture, whey powder) produced higher H 2 gas yields than others (proteins and lipids). Lipid-rich samples were the most difficult to decompose into gasifiable intermediates and therefore produced the lowest H2 yield. Generally, the addition of NaOH led to higher H2 generation from all sample types. However, two separate side reactions namely, neutralization and saponification involving NaOH with protein- and lipid-rich samples, respectively were significant. Hydrogen production from carbohydrate-rich samples was most suited for the reaction conditions applied.
KW - Biomass
KW - Food
KW - Gasification
KW - Hydrogen
KW - Supercritical
KW - Wastes
UR - http://www.scopus.com/inward/record.url?scp=84855857460&partnerID=8YFLogxK
UR - https://www.sciencedirect.com/science/article/abs/pii/S0360319911024748?via%3Dihub
U2 - 10.1016/j.ijhydene.2011.10.100
DO - 10.1016/j.ijhydene.2011.10.100
M3 - Article
AN - SCOPUS:84855857460
SN - 0360-3199
VL - 37
SP - 2248
EP - 2259
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 3
ER -