Semivolatile and Volatile Compound Evolution during Pyrolysis and Combustion of Colombian Coffee Husk

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Title: Semivolatile and Volatile Compound Evolution during Pyrolysis and Combustion of Colombian Coffee Husk
Authors: Conesa, Juan A. | Sánchez, Nazly E. | Garrido, María A. | Casas, Juan C.
Research Group/s: Residuos, Energía, Medio Ambiente y Nanotecnología (REMAN)
Center, Department or Service: Universidad de Alicante. Departamento de Ingeniería Química | Universidad de Alicante. Instituto Universitario de Ingeniería de los Procesos Químicos
Keywords: Coffee Husk | Polycyclic Aromatic Hydrocarbons (PAHs) | Toxic Equivalence Factor (TEF) | Pyrolysis | Combustion
Knowledge Area: Ingeniería Química
Issue Date: 18-May-2016
Publisher: American Chemical Society
Citation: Energy & Fuels. 2016. doi:10.1021/acs.energyfuels.6b00791
Abstract: Thermal characterization of coffee husk (Coffea arabica) from Colombian coffee has been studied. Different products, mostly volatile and semivolatile compounds, were analyzed, paying special attention to 16 polycyclic aromatic hydrocarbons (PAHs) classified by the United States Environmental Protection Agency (U.S. EPA) as priority pollutants, frequently used for checking toxicity in environmental samples. A fixed amount of raw material was exposed to different excess air ratios (λ = 0–2.33) and nominal temperature of 1123 K in a horizontal quartz reactor. The results show that coffee husk is a promising biomass for energetic exploitation with reduced formation of PAHs in a low air excess ratio. This implies reduction of carcinogenic potential in the limited presence of oxygen, demonstrated by calculating the carcinogenic potential (KE) for each experimental condition. Most volatile and semivolatile compounds followed different trends, with the oxygen presence prevailing their decomposition with increasing the air excess ratio.
Sponsor: Nazly E. Sánchez acknowledges the Colombian Government, Project InnovAcción Cauca, and Corporación Universitaria Autónoma del Cauca for her financial support of the research stay in Alicante, Spain. Financial support for this experimental work was provided by the CTQ2013-41006-R Project from the Ministry of Economy and Competitiveness (Spain) and the PROMETEOII/2014/007 Project from the Valencian Community Government (Spain).
ISSN: 0887-0624 (Print) | 1520-5029 (Online)
DOI: 10.1021/acs.energyfuels.6b00791
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2016 American Chemical Society
Peer Review: si
Publisher version:
Appears in Collections:INV - REMAN - Artículos de Revistas

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