Production of pellets for combustion and physisorption of CO2 from hydrothermal carbonization of food waste - Part I: High-performance solid biofuels

Author(s)

Moreira, Bruno Rafael de Almeida ^[1] ; Cruz, Victor Hugo ^[2] ; Perez, Juan Fernando ^[3] ; Viana, Ronaldo da Silva ^[2]

Affiliation

^[1] Sao Paulo State Univ Unesp, Sch Agr & Veterinarian Sci, Dept Engn & Exact Sci, Jaboticabal, SP - Brazil

^[2] Sao Paulo State Univ Unesp, Coll Agr & Technol Sci, Dept Plant Prod, Sao Paulo - Brazil

^[3] Univ Antioquia, Fac Engn, Dept Mech Engn, Grp Efficient Management Energy GIMEL, Medellin - Colombia

• Document type: Journal article
• Source: JOURNAL OF CLEANER PRODUCTION; v. 319, OCT 15 2021.
• Web of Science Citations: 0

Abstract

Our study analyzed if it could be possible for converting hydrochar from food waste and its ash into solid biofuels and adsorbents of CO2. The pilot-scale manufacturing of pellets consisted of carbonizing food waste at 200.00 degrees C and 1.50 MPa for 1.00-2.00 h then pressing its hydrochar and ash with spent coffee ground on an automatic pelletizer at 75.00-100.00 MPa and 150.00 degrees C for 90.00 s. Products with co-addition were highly durable (97.95-98.05%), burned themselves out stably with 2.75-3.25 W g(-1) heat flow and tended to have low slagging, despite their significant amount of ash of 2.80-2.90%. Hypothetically, they replaced approximately 10.00% of generation of electricity and saved 112.20 x 10(6) Mg yr(-1) emission of CO2 from coal. Our insights are timely and absolutely will assist with tackling social and environmental impacts of generation of hazardous (bio)waste and emission of CO2 from coal-like fossil fuels. (AU)

• FAPESP's process: 17/24234-1 - Energy efficiency of biomass from first-generation and second-generation bioethanol production with glycerin added during pellets production
• Grantee: Ronaldo da Silva Viana
• Support Opportunities: Program for Research on Bioenergy (BIOEN) - Regular Program Grants