Abstract

TEJEDA, Lesly; QUINTANA, Julio; PEREZ, Jairo  and  YOUNG, Harold. ETHANOL FROM WASTE OF PRUNING BY ACID HYDROLYSIS AND ENZYMATIC HYDROLYSIS. rev.udcaactual.divulg.cient. [online]. 2011, vol.14, n.1, pp.111-116. ISSN 0123-4226.

This research pretended to evaluate the use of yard pruning residues and to look for raw materials to produce bio-fuels. The hydrolysis of lignocellulosic biomass contained in the waste of the tree trimming at the Fundación Universitaria Tecnológico Comfenalco was carried out to produce glucose syrups to, potentially, be converted into bio-ethanol. Two methods were employed, the acid hydrolysis using dilute sulfuric acid and the enzymatic hydrolysis using cellulose enzymes. As a result, a higher conversion of all samples was obtained with the acid hydrolysis (between 10 to 30g/L of glucose) as with the enzymatic hydrolysis of mixed waste (8.83g/L of glucose), suggesting that bio-fuels can be obtained, beginning from this type of vegetal residues. It is necessary to optimize the process in order to improve the output in the glucose production.

Keywords : Ethanol; hydrolysis; glucose syrups; lignocellulosic wastes.

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