Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
BIOENERGY VALORIZATION OF THE BLENDS (FOOD WASTE AND URBAN PRUNINGS) AS A POSSIBLE CANDIDATE FOR SOLID BIOFUELS PRODUCTION
Submission Author:
Maurício Santos da Silva , MA , Brazil
Co-Authors:
Maurício Santos da Silva, Mariana Melo, Julie Brenda Santos da Silva, Arthur Sousa Silva, Glauber Cruz
Presenter: Glauber Cruz
doi://10.26678/ABCM.COBEM2023.COB2023-0897
Abstract
The exacerbated consumption of natural resources directly impacts food waste - in Brazil this fact is a serious socioenvironmental issue. Another problem faced by large cities is urban afforestation. Although it is a common practice and beneficial, their pruning service results in a significant amount of organic solid waste. The present study evaluated food waste (FW) and urban prunings (UP), regarding the potential for bioenergy production. Physicochemical and morphological properties were employed for the pure samples (100%UP and 100%FW), and their blends in the ratios (75%UP:25%FW; 50%UP:50%FW; 25%UP:75%FW). It was observed by XRD, that the pure samples and blends showed an amorphous and reactive biomass for the thermoconversion process. SEM images detected structures with high levels of disorder for all samples. From FTIR, a predominance of compounds formed by carbon, hydrogen, and oxygen were detected, elements these of extreme importance for the biofuels generation. The proximate analysis identified the contents of moisture (W < 6.0%), volatile materials (VM > 79.0%), fixed carbon (FC > 7.0%), and ash (ASH ≈ 8.0%), reflecting optimal operating conditions in thermochemical systems (combustion, pyrolysis, and/or gasification). By calorimetry, it was found average values for Higher Heating Value (16.96±0.69 MJ kg-1) and Lower Heating Value (15.53±0.06 MJ kg-1). Samples with higher percentages of UP (100%UP and 75%UP) presented higher HHV (≈ 17.69±0.25 MJ kg-1).
Keywords
Biomass, green energy, natural resources, thermoconversion, thermal systems
