Application of orange peel waste in the production of solid biofuels and biosorbents.
This work aimed to study the potential use of pyrolyzed orange peels as solid biofuels and biosorption of heavy metals. The dry biomass and the biofuel showed moderate levels of carbon (44-62%), high levels of oxygen (30-47%), lower levels of hydrogen (3-6%), nitrogen (1-2.6%), sulfur (0.4-0.8%) and ash with a maximum of 7.8%. The activation energy was calculated using Kissinger method, involving a 3 step process: volatilization of water, biomass degradation and volatilization of the degradation products. The calorific value obtained was 19.3MJ/kg. The studies of metal biosorption based on the Langmuir model obtained the best possible data fits. The results obtained in this work indicated that the potential use of waste orange peel as a biosorbent and as a solid biofuel are feasible, this product could be used in industrial processes, favoring the world economy.
Department of Environmental Engineering, São Paulo State University (UNESP) "Júlio de Mesquita Filho", Avenue Três de Março, 511, Alto da Boa Vista, 18087-180 Sorocaba, São Paulo, Brazil.
Carolina Monteiro
CM
Santos
School of Chemistry, Federal University of Rio de Janeiro, Bloco E of CT, Cidade Universitária, Rio de Janeiro, RJ 212949-900, Brazil.
Jo
J
Dweck
Department of Environmental Engineering, São Paulo State University (UNESP) "Júlio de Mesquita Filho", Avenue Três de Março, 511, Alto da Boa Vista, 18087-180 Sorocaba, São Paulo, Brazil.
Renata Silva
RS
Viotto
Department of Environmental Engineering, São Paulo State University (UNESP) "Júlio de Mesquita Filho", Avenue Três de Março, 511, Alto da Boa Vista, 18087-180 Sorocaba, São Paulo, Brazil.
André Henrique
AH
Rosa
Department of Environmental Engineering, São Paulo State University (UNESP) "Júlio de Mesquita Filho", Avenue Três de Março, 511, Alto da Boa Vista, 18087-180 Sorocaba, São Paulo, Brazil. Electronic address: leandro@sorocaba.unesp.br.
Leandro Cardoso
LC
de Morais
D000327:Adsorption; D056804:Biofuels; D018533:Biomass; D002244:Carbon / Q000032:analysis; D032084:Citrus sinensis; D005525:Food-Processing Industry; D006859:Hydrogen / Q000032:analysis; D007220:Industrial Waste; D019216:Metals, Heavy / Q000737:chemistry / Q000302:isolation & purification*; D009584:Nitrogen / Q000032:analysis; D014867:Water / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000302:isolation & purification
D056804:Biofuels; D007220:Industrial Waste; D019216:Metals, Heavy; D014874:Water Pollutants, Chemical; D014867:Water; D002244:Carbon; D006859:Hydrogen; D009584:Nitrogen
Biomass; Biosorption; Fruit residue; Pyrolysis; Solid biofuel