期刊
BIORESOURCE TECHNOLOGY
卷 372, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2023.128649
关键词
Hydrothermal carbonization; Pyrolysis; Clay catalyst; Biochar; Bio-oil
Agro-industrial wastes can be converted to sustainable fuels and carbon products using a cascaded HTC-pyrolysis process with clay catalysts. The addition of clay catalysts affects the hydrocarbon content of the bio-oil, depending on the insertion point in the process.
Agro-industrial wastes can be thermochemically converted to sustainable fuels and upcycled carbon products. However, processing such feedstocks through pyrolysis or hydrothermal carbonization (HTC) alone yields fuels that require significant downstream upgrading. In this work, apple pomace was treated via a cascaded HTCpyrolysis process using inexpensive and abundant clay catalysts, montmorillonite and attapulgite. Clays were added pre-HTC to raw biomass or to hydrochar pre-pyrolysis to examine the effect of addition as a function of process insertion point. Both clays produce similar bio-oils when they are added at the same process point. However, bio-oil was affected by the point in which clay was added to the process (before or after HTC). When clay was added pre-HTC, the bio-oil had an average hydrocarbon content twice that when clay was added to the hydrochar after HTC, prior to pyrolysis.
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