Document Detail


Production of biodiesel from waste frying oils.
MedLine Citation:
PMID:  15964752     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Waste frying oils transesterification was studied with the purpose of achieving the best conditions for biodiesel production. Transesterification reactions were carried out for 1 h using waste frying oils (WFOs), methanol, and sodium hydroxide as catalyst. In order to determine the best conditions for biodiesel production, a series of experiments were carried out, using methanol/WFO molar ratios between 3.6 and 5.4 and catalyst/WFO weight ratios between 0.2% and 1.0%. For oils with an acid value of 0.42 mg KOH/g, results show that a methanol/WFO ratio of 4.8 and a catalyst/WFO ratio of 0.6% gives the highest yield of methyl esters. Furthermore, an increase in the amount of methanol or catalyst quantity seems to simplify the separation/purification of the methyl esters phase, as showed by a viscosity reduction and an increasing purity to values higher than 98% for methyl esters phase.
Authors:
Pedro Felizardo; M Joana Neiva Correia; Idalina Raposo; João F Mendes; Rui Berkemeier; João Moura Bordado
Publication Detail:
Type:  Journal Article     Date:  2005-06-17
Journal Detail:
Title:  Waste management (New York, N.Y.)     Volume:  26     ISSN:  0956-053X     ISO Abbreviation:  Waste Manag     Publication Date:  2006  
Date Detail:
Created Date:  2006-03-20     Completed Date:  2006-09-29     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9884362     Medline TA:  Waste Manag     Country:  United States    
Other Details:
Languages:  eng     Pagination:  487-94     Citation Subset:  IM    
Affiliation:
Department of Chemical Engineering, Instituto Superior Técnico, Lisboa, Portugal.
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MeSH Terms
Descriptor/Qualifier:
Conservation of Natural Resources
Energy-Generating Resources*
Esterification
Fatty Acids / chemistry
Methanol / chemistry
Plant Oils*
Refuse Disposal / methods*
Sodium Hydroxide / chemistry
Waste Products*
Chemical
Reg. No./Substance:
0/Fatty Acids; 0/Plant Oils; 0/Waste Products; 1310-73-2/Sodium Hydroxide; 67-56-1/Methanol

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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