Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
Energetic characterization of lignocellulosic biomass: macauba (Acrocomia aculeata)
Submission Author:
Laura Sousa , DF
Co-Authors:
Laura Sousa, Fábio Lisboa, Geraldo Tiago Filho
Presenter: Laura Sousa
doi://10.26678/ABCM.COBEM2021.COB2021-1111
Abstract
The consequences of GHG emissions go through the increase in the average global surface temperature, changes in natural systems, rising sea levels, and losses in biodiversity. Thus, biomass presents itself as an alternative energy source to the use of current fossil fuels. Macauba is a brazilian native palm tree with a high yield of coconuts that have many applications as biofuels. The high-density coconut endocarp has great potential as solid biofuel both in raw and charcoal conditions. The present study compares the energy parameters of macauba coconut endocarp charcoal in two cultivation treatments: irrigation and fertilization, from two locations: Federal District (DF) and Sao Paulo (SP). The energy parameters were structure composition analysis, thermogravimetric analysis, gross calorific value and proximate analysis. The results for GCV of fruits provided by Embrapa did not vary with the values in the literature, being 21.0413 MJ / kg for fruits CI / DF and 20.9409 CI / SP. CA / DF endocarps showed 20.8996 MJ / kg and mean CA / SP of 20.8657 MJ / kg. The TGA Analysis showed a degradation temperature of cellulose, hemicellulose and lignin at 390ºC, which is higher than cupuaçu bark and tucumã, for example. Holocellulose and lignin, together, represented 80,35% of the total energy content of macauba, and with GCV value as 20.86 MJ/kg it can represent the total energy potential of this biomass.
Keywords
Biomass, Gross Calorific Value, Thermogravimetric analysis, pyrolysis
