414442 Biogas Production from Three Lignocellulosic Residues: Coffe Cut-Stems (CCS), Sugarcane Bagasse and Pinus Patula

Wednesday, November 11, 2015
Exhibit Hall 1 (Salt Palace Convention Center)
Julio C. Sánchez Rendón1, Carlos A. García2 and Carlos A. Cardona2, (1)Instituto de Biotecnología y Agroindustria, Departamento de ingeniería quimica, Universidad Nacional de Colombia, Manizales, Colombia, (2)Instituto de Biotecnología y Agroindustria, Departamento de Ingeniería Química, Universidad Nacional de Colombia, Manizales, Colombia

Biogas Production from three Lignocellulosic Residues: Coffe Cut-Stems (CCS), Sugarcane Bagasse and Pinus patula

Sanchez Julio C, Garcia Carlos, Cardona Carlos A

1Universidad Nacional de Colombia sede Manizales, Instituto de Biotenologia y Agroindustria, (+57) (6) 879400 ext 55354.


Biogas is a mixture of methane (CH4), carbon dioxide (CO2) and hydrogen (H2) among others. It can be considered a form of green energy is gaining popularity worldwide, due to politic, economic and environmental reasons. Some countries in Europe have already applied biogas for its energy supply, as for example Germany that at the end of 2008 had approximately 4.000 agricultural biogas production units on its farms.  

Biogas is produced in anaerobic digestion process which is carried out in four steps: hydrolysis, acidogenesis, acetogenesis/dehydrogenation and methanation. Each one of these steps is performed by different classes of microorganisms: acetogenic bacteria (hydrolyses substrates and synthetizes volatile fatty acids (VFA) mostly acetic acid), H2-producing bacteria and methanogenic bacteria       (break acetic acid into CH4 and CO2 or take hydrogen and carbon to form methane) [1].

Multiple sources of organic material can be useful for biogas production as they are residues of others  processes  such as municipal solid waste (MSW), crop residues, animal manure, forest residues or dedicated energy crops, which are mostly composed by lignocellulosic material (cellulose, hemicellulose, lignin and other substances) [2]. In Colombia case  some available sources of lignocellulose considered as agriculture residues are coffee cut-stems (CCS) [3], Pinus patula residues and sugarcane bagasse [4].

The aim of this work is to present an approach for the sustainability assessment of biogas production from common agroindustrial residues for bioenergy production, specifically the biogas production from coffee cut-stems, Pinus patula residues and sugarcane bagasse. Residues were experimentally characterized by measuring klason lignin content, acid-soluble lignin content, holocellulose content, cellulose content and ash content. Pretreatment of lignocellulosic residues was done with particle size reduction and basic hydrolysis, fermentation was carried out in strict anaerobic conditions and constant temperature, biogas production rate was measure by volume displacement.  Energy, economic and environmental simulations with experimental results were evaluated with Aspen Plus V8.4®, Aspen Economic Evaluator® and WAR® respectively [5],[6].

The obtained results lead to conclude that the studied lignocellulosic resources are a profitable option for bioenergy production, but these results dramatically depend of the scale of production.



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