Molecules (Oct 2023)

Coffee Pulp Gasification for Syngas Obtention and Methane Production Simulation Using Ni Catalysts Supported on Al<sub>2</sub>O<sub>3</sub> and ZrO<sub>2</sub> in a Packed Bed Reactor

  • Carlos Esteban Aristizábal-Alzate,
  • Ana Belén Dongil,
  • Manuel Romero-Sáez

DOI
https://doi.org/10.3390/molecules28207026
Journal volume & issue
Vol. 28, no. 20
p. 7026

Abstract

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The methanation of CO2 is of great interest in power-to-gas systems and contributes to the mitigation of climate change through carbon dioxide capture and the subsequent production of high-added-value products. This study investigated CO2 methanation with three Ni catalysts supported on Al2O3 and ZrO2, which were simulated using a mathematical model of a packed bed reactor designed based on their chemical kinetics reported in the literature. The simulated reactive system was fed with syngas obtained from residual coffee pulp obtained after a solvent phytochemical extraction process under several gasification conditions. The results reflect a high degree of influence of the catalyst support, preparation method, and syngas composition on CO2 and H2 conversions and CH4 selectivity. For all the syngas compositions, the Ni/ZrO2 catalysts showed the best values for CO2 conversion and H2 conversion for the Ni/Al2O3 catalyst except in gasification at 700 °C and using the Ni/ZrO2p catalyst.

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