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Energy Use of Biogas Through Chemical Looping Technologies with Low-cost Oxygen Carriers by Arturo Cabello; Teresa Mendiara; M. Teresa Izquierdo; Francisco García-Labiano; Alberto Abad is a Engineering article available to read on EtoBox.

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Biogas is a renewable fuel generated in the anaerobic digestion of organic material. The expansion of biogas as a bioenergy source in the next decades leads to find new ways for its energy exploitation such as the Chemical Looping technologies. In this work, a low-cost Fe-based residue was used as oxygen carrier in two processes with biogas, namely Chemical Looping Combustion (CLC) and Chemical Looping Reforming (CLR). CLC process is focused on the energy production with CO2 capture. CLC experiments showed higher methane combustion efficiency (∼86%) than those referred in literature with other low-cost Fe-based materials. CLR process is dedicated to the production of syngas or hydrogen without CO2 emissions. Ni- or Cu-based oxygen carrier had been successfully used in order to catalyse the methane reforming. Here, the Fe-based material was also used for CLR. The biogas composition facilitated dry reforming of biogas to obtain syngas. In the dry-CLR of biogas, it was possible to reach about 55% methane conversion with a yield to syngas of 1.3 mol (CO + H2)/mol CH4. A suitable management of the effluent gas is proposed to maximize CH4 conversion and syngas yield, which includes CO2 s

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Author

Arturo Cabello; Teresa Mendiara; M. Teresa Izquierdo; Francisco García-Labiano; Alberto Abad

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Engineering (Physical Sciences)