Abstract
Partial oxidation was applied to enhance the gasification efficiency of the supercritical water gasification of biomass. Hydrogen peroxide was employed as oxygen source and effect of partial oxidation on supercritical water gasification of 0.6M glucose, a model compound of biomass, and cabbage slurry was experimentally investigated using a bench-scale continuous reactor. For gasification at 873K, gasification efficiency close to unity was obtained, but at a lower temperature, the value decreased. The effect of partial oxidation was thus investigated at lower temperatures. Partial oxidation was effective in improving gasification efficiency for both glucose solution and cabbage slurry. The improvement of gasification efficiency was accompanied with higher yield of both hydrogen and carbon monoxide. The effect is clear at higher temperature. Proper amount of oxidant addition needs to be decided.
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