Title:
Biomass Fly Ash as a Catalyst in Biomass Gasification Reactions for H2 Production
Author(s):
Gomes, H.G.M.F., Ribeiro, J.P., Cruz, N.C., Matos, M.A.A., Tarelho, L.A.C.
Document(s):
Paper
Poster
Abstract:
In this work, the potential of industrial biomass fly ash (BFA) granules as a waste-derived catalyst for gasification reactions, namely the water-gas-shift (WGS) reaction for H2 production, was evaluated. Response Surface Methodology was used to assess the effect of the temperature (T) and water steam to Carbon monoxide molar ratio (S/CO) on the H2 concentration. The experimental work was planned according to the central composite experimental design. The experimental results show that temperature plays a key role in the WGS reaction. Increasing T from 550 to 750 °C positively affected the H2 concentration, reaching values up to 40 vol.%. However, for the range analysed (1 to 2 molH2O·mol-1CO), the S/CO molar ratio had no evident impact on the H2 concentration. The effect of the catalyst on the WGS reaction was characterised by a relevant increase in H2 concentration, from 1.5 vol.% (inert material) to 35 vol.% (BFA granules), demonstrating the catalytic activity of the BFA to promote the WGS reaction in the forward direction. This work showed that BFA has high potential as a catalyst in gasification processes to increase the H2 concentration in the producer gas, closing the cycle for biomass to energy, in the context of circular economy.
Keywords:
biomass, catalysis, gasification, hydrogen, ashes
Topic:
Biomass Conversion to Intermediate Bioenergy Carriers and Sustainable Biofuels
Subtopic:
Synthetic fuels from biomass and hydrogen
Event:
32nd European Biomass Conference and Exhibition
Session:
5BV.4.14
Pages:
736 - 742
ISBN:
978-88-89407-24-0
Paper DOI:
10.5071/32ndEUBCE2024-5BV.4.14
Price:
FREE
