Document Detail


Recovery of different waste vegetable oils for biodiesel production: A pilot experience in Bahia State, Brazil.
MedLine Citation:
PMID:  23993759     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
In Brazil, and mainly in the State of Bahia, crude vegetable oils are widely used in the preparation of food. Street stalls, restaurants and canteens make a great use of palm oil and soybean oil. There is also some use of castor oil, which is widely cultivated in the Sertão Region (within the State of Bahia), and widely applied in industry. This massive use in food preparation leads to a huge amount of waste oil of different types, which needs either to be properly disposed of, or recovered. At the Laboratorio Energia e Gas-LEN (Energy & Gas lab.) of the Universidade Federal da Bahia, a cycle of experiments were carried out to evaluate the recovery of waste oils for biodiesel production. The experiences were carried out on a laboratory scale and, in a semi-industrial pilot plant using waste oils of different qualities. In the transesterification process, applied waste vegetable oils were reacted with methanol with the support of a basic catalyst, such as NaOH or KOH. The conversion rate settled at between 81% and 85% (in weight). The most suitable molar ratio of waste oils to alcohol was 1:6, and the amount of catalyst required was 0.5% (of the weight of the incoming oil), in the case of NaOH, and 1%, in case of KOH. The quality of the biodiesel produced was tested to determine the final product quality. The parameters analyzed were the acid value, kinematic viscosity, monoglycerides, diglycerides, triglycerides, free glycerine, total glycerine, clearness; the conversion yield of the process was also evaluated.
Authors:
Ednildo Andrade Torres; Gilberto S Cerqueira; Tiago M Ferrer; Cristina M Quintella; Massimo Raboni; Vincenzo Torretta; Giordano Urbini
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-8-27
Journal Detail:
Title:  Waste management (New York, N.Y.)     Volume:  -     ISSN:  1879-2456     ISO Abbreviation:  Waste Manag     Publication Date:  2013 Aug 
Date Detail:
Created Date:  2013-9-2     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9884362     Medline TA:  Waste Manag     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2013 Elsevier Ltd. All rights reserved.
Affiliation:
Escola Politecnica, UFBA-Universidade Federal da Bahia, Salvador, Bahia, Brazil.
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