Notice of Retraction: Fuel gas production from catalytic steam gasification of municipal solid wastes

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The catalytic steam gasification of municipal solid wastes (MSW) for fuel gas production was experimentally investigated in a combined fixed bed reactor using the newly developed nano-NiO/γ-Al2O3 catalyst. A series of experiments have been performed to explore the effects of catalyst presence, catalytic temperature, steam to MSW ratio (S/M) and MSW particle size on the composition and yield of gasification gases. The experiments results indicated that the supported NiO/γ-Al2O3 catalyst had a high activity of cracking tar and hydrocarbons as well as upgrading the gas quality in catalytic steam gasification of municipal solid wastes. Catalytic temperature was crucial for the overall gasifiation process, a higher temperature contributed to more hydrogen production and gas yield. Comparing with MSW catalytic gasification, the introduction of steam improved gas quality and yield, the S/M ratio of 1.33 was found as the optimum operating condition in the catalytic steam gasification of municipal solid wastes. It was also shown that a smaller particle was more favorable for gas quality and yield.