Thermal degradation of açaí seeds and potential application in thermochemical processes

Keywords: açai seeds, added value, bioenergy, biomass characterization, thermal analysis

Abstract

Purpose: Thermal and Physicochemical evaluation of açaí seeds for its use in thermochemical conversion processes for clean energy generation. Methodology: Experimental and qualitative research, using analyzes such as: Thermal analysis (TG/DTG and DTA curves) and Calorimetry, Ultimate and Proximate analyzes, Scanning Electron Microscopy, Energy Dispersive Spectroscopy, X-Ray Diffraction, Fourier Transform Infrared Spectroscopy and Optical Emission Spectroscopy - Inductively Coupled Plasma. Findings: It was noted that the açaí seeds presented carbon, hydrogen, and oxygen contents as majority elements and a Higher Heating Value (HHV) of 19.8 MJ kg-1. Nitrogen and lead elements were found as trace elements. However, highly polluting elements, e.g., sulfur, cadmium and arsenic were not detected in the samples. Originality: The utilization of açaí seeds by means of thermoconversion processes for bioenergetic purposes can be an attractive socioenvironmental, reducing disposal in inappropriate places, adding considerable value to waste and still protecting the environment. 

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Author Biographies

Luciano dos Santos Oliveira, Federal University of Maranhão
Graduated in Mechanical Engineering (2020) from the Federal University of Maranhão (UFMA), working mainly on projects aimed at the development of a hydrothermal route for the synthesis of a nanoparticulate catalyst for use in the production of biodiesel and also in the reuse of solid waste biomass. urban areas in the municipality of São Luís (MA) and later use in thermo-chemical conversion systems for bioenergetic purposes, financed by Fapema and CNPq, respectively.
Arthur Vinicius Sousa Silva, Federal Institute of Maranhão
Graduated in Interdisciplinary Bachelor of Science and Technology (2017) and Mechanical Engineering (2019) from the Federal University of Maranhão (UFMA). He is studying for a Master's Degree in Mechanical Engineering at the Federal Institute of Education, Science and Technology of Maranhão (IFMA). He developed works in the field of linguistics through computational analysis. Currently works with the characterization of the physical-chemical and thermal properties of fish scales and use in thermo-conversion systems, with bioenergetic purposes; gaseous emissions and / or pollutant formation in different thermochemical processes (combustion and pyrolysis). He also develops work in the field of biomass in general for bioenergetic purposes.
Charles Correa Conconi, Mercedes-Benz Brazil
Graduated in Chemical Engineering from Faculdades Oswaldo Cruz, Master in Science and Materials Engineering from São Carlos School of Engineering - University of São Paulo (EESC-USP) and PhD in Mechanical Engineering from São Carlos School of Engineering - University of São Carlos Paulo (EESC-USP). He is currently an Engineer and Materials Research at Mercedes-Benz do Brasil Ltda. It develops engine lubricant, gearbox, differential, power steering, greases, brake fluid, anti-freeze / anti-corrosion fluids, among others, for use in Mercedes-Benz vehicles. It analyzes physicochemical of the lubricants, greases and fluids used for making warranty reports. Developments of new methods of physical-chemical analysis on bench or using analytical equipment (Gas Chromatography, Infrared by Furier transform, Mass Spectroscopy, Liquid Chromatography, Term analysis among others) Technical consultancy related to automotive and industrial lubricants, fuels, greases and others.
Edelvio de Barros Gomes, Federal Institute of Bahia
Biologist, PhD in Chemical and Biochemical Process Technology at UFRJ. Post-doctorate: School of Chemistry - UFRJ; Department of Food Technology - UFS; Post-graduation in Environment - Uniceuma. Performance in research with Biotreatment of residues and Treatment of lignocellulosic biomass. Professor of Cell Biology, Biology, Bioengineering, Microbiology and Bioprocesses.
Waldir Antônio Bizzo, University of Campinas
Free Lecturer at the State University of Campinas, at the Faculty of Mechanical Engineering. He holds a PhD in Mechanical Engineering from Unicamp (1997) and did a postdoctoral internship at CIRAD-Center de coopération internationale en recherche agronomique pour le développement (Montpellier-France) in the research group Biomasse-Energie. He has published more than 30 articles in specialized journals, 6 chapters in books and 46 works in the annals of events. He supervised 26 master's dissertations and 10 doctoral theses in the areas of Mechanical Engineering, Chemical Engineering and Environmental Engineering. He works in the areas of biomass combustion research, rapid pyrolysis, combustion aerodynamics and pollutant formation, biomass energy generation, fluidized bed.
Glauber Cruz, Federal University of Maranhão
Graduated in Industrial Mechanical Engineering (2004) by the Federal Institute of Technological Education of Maranhão (IFMA), Master in Aeronautical and Mechanical Engineering (2006) by the Technological Institute of Aeronautics (ITA) and PhD in Mechanical Engineering (2015) by the School of Engineering of São Carlos (EESC) - University of São Paulo (USP). He is currently an Adjunct Professor III and Researcher in the Mechanical Engineering Course (CCEM) at the Federal University of Maranhão (UFMA). Permanent Professor of the Master in Mechanical Engineering (IFMA) and Collaborating Professor of the Masters in Environment (UniCeuma) and Aerospace Engineering (UFMA). He has experience in Transport Phenomena (Fluid Mechanics, Heat and Mass Transfer, and Thermodynamics) and Numerical Simulation of Thermal Systems (CFD-Computational Fluids Dynamic). It also uses various lignocellulosic materials (biomass) or solid waste for the production of bioenergy / biofuels. Thermal and physico-chemical characterization of these materials by various analytical techniques; Chemical kinetics of thermal decomposition reactions of these residues to determine activation energies; Gaseous emissions and / or pollutant formation in different thermochemical processes (combustion, oxy-combustion, pyrolysis and gasification) of biomass for bioenergetic purposes.

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Published
2021-06-08
How to Cite
Oliveira, L. dos S., Silva, A. V. S., Conconi, C. C., Gomes, E. de B., Bizzo, W. A., & Cruz, G. (2021). Thermal degradation of açaí seeds and potential application in thermochemical processes. Revista Produção E Desenvolvimento, 7. https://doi.org/10.32358/rpd.2021.v7.531
Section
Markets and Production Management