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Synergistic improvements in energy recovery and bio-oil quality through integrated thermochemical valorization of agro-industrial waste of varying moisture content.
Karod, Madeline; Rubin, Samantha F; Goldfarb, Jillian L.
Affiliation
  • Karod M; Department of Biological & Environmental Engineering, Cornell University 111 Wing Drive, Ithaca, NY 14853, USA.
  • Rubin SF; Department of Biological & Environmental Engineering, Cornell University 111 Wing Drive, Ithaca, NY 14853, USA.
  • Goldfarb JL; Department of Biological & Environmental Engineering, Cornell University 111 Wing Drive, Ithaca, NY 14853, USA; Smith School of Chemical & Biomolecular Engineering, Cornell University, Ho Plaza, Ithaca, NY 14853, USA. Electronic address: jlg459@cornell.edu.
Bioresour Technol ; 394: 130173, 2024 Feb.
Article in En | MEDLINE | ID: mdl-38096998
ABSTRACT
Two thermochemical valorization schemes were investigated for co-upgrading dry and wet agricultural wastes through integrated hydrothermal carbonization (HTC) and pyrolysis. In the first pathway, dry and wet wastes were co-carbonized. The resulting hydrochar was pyrolyzed to yield an energy dense biochar (26-32 MJ/kg) high in fixed carbon (41-86 wt%) and low in volatile matter (6-12 wt%). The resulting bio-oil was lower in carboxylic acids and higher in phenols than predicted based on an additive scheme. In pathway two, wet waste (only) underwent HTC and the resulting hydrochar was mixed with dry waste and the mixture pyrolyzed. This pathway showed a lower biochar yield (32-67 wt%) and lower HHV values (24-31 MJ/kg) but higher fixed carbon content (65-84 wt%). The bio-oil contained more carboxylic acids than pathway 1 bio-oil. Pathway 1 biochars were more thermally reactive than pathway 2 biochars, reflecting a synergistic deoxygenation that occurs when incorporating dry waste in HTC prior to pyrolysis.
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Full text: 1 Database: MEDLINE Main subject: Plant Oils / Carbon / Charcoal / Polyphenols / Industrial Waste Language: En Journal: Bioresour Technol Year: 2024 Type: Article Affiliation country: United States

Full text: 1 Database: MEDLINE Main subject: Plant Oils / Carbon / Charcoal / Polyphenols / Industrial Waste Language: En Journal: Bioresour Technol Year: 2024 Type: Article Affiliation country: United States