Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/320140
Type: Artigo de Periódico
Title: Characterization And Productivity Of Cassava Waste And Its Use As An Energy Source
Author: Veiga
JPS; Valle
TL; Feltran
JC; Bizzo
WA
Abstract: This study sought to quantify and characterize cassava waste as fuel. The wastes from three cultivars were collected to study and were divided into three distinct parts of the cassava plant: seed stem, thick stalks, and thin stalks. Physical and chemical analyzes were carried out to determine the elemental composition of the waste: volatile matter; fixed carbon; ash; moisture; lignin; cellulose; hemicellulose; ash composition and higher heating value were determined. We conducted a thermogravimetric analysis in oxidizing and inert atmospheres to study the behavior of the waste as fuel. The root productivity obtained ranged from 7.7 to 13.0 t ha(-1) yr(-1) on a dry basis (db), and the ratio between waste and roots varied from 0.36 to 0.91. The physical and chemical properties of cassava waste are analogous to those of woody biomass regarding the elemental composition, the higher heating value, and thermogravimetric analysis. Ash content varied from 2.5% to 3.5%, reaching around 6.0% in samples unwashed. Approximately 60% of the ashes are alkali oxides, especially P2O5, K2O and CaO, which have low melting points. The alkali index calculated suggests that there is a strong tendency that the combustion process leads to ash fouling and the formation of ash deposits. (C) 2016 Elsevier Ltd. All rights reserved.
Subject: Cassava
Agricultural Waste
Energy
Biomass
Biofuels
Editor: PERGAMON-ELSEVIER SCIENCE LTD
Rights: fechado
Identifier DOI: 10.1016/j.renene.2016.02.078
Address: http://www-sciencedirect-com.ez88.periodicos.capes.gov.br/science/article/pii/S0960148116301793
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

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