Document Detail


Application of (R)-3-hydroxyalkanoate methyl esters derived from microbial polyhydroxyalkanoates as novel biofuels.
MedLine Citation:
PMID:  19249855     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Microbial polyhydroxyalkanoates (PHA) were proposed for the first time as a new type of biofuel. In this paper, poly-R-3-hydroxybutyrate (PHB) and medium chain length PHA (mcl PHA) were, respectively, esterified to become R-3-hydroxybutyrate methyl ester (3HBME) and medium chain length hydroxyalkanoate methyl ester (3HAME) via acid-catalyzed hydrolysis. The recovery percentages of 3HBME and 3HAME were 52 and 65%, respectively. The purities of 3HBME and 3HAME were 97 and 96%, respectively. Combustion heats of 3HBME, 3HAME, ethanol, n-propanol, n-butanol, 0(#) diesel, 90(#) gasoline, and 3HBME-based and 3HAME-based blended fuels were investigated and compared, respectively. It was found that 3HBME and 3HAME had combustion heats valuing 20 and 30 KJ/g, respectively. Ethanol has a combustion heat of 27 KJ/g, while addition of 10% 3HBME or 3HAME enhanced the combustion heat of ethanol to 30 and 35 KJ/g, respectively. The addition of 3HBME or 3HAME into n-propanol and n-butanol led to a slight reduction of their combustion heats. Combustion heats of blended fuels 3HBME/diesel or 3HBME/gasoline and of 3HAME/diesel or 3HAME/gasoline were lower than that of the pure diesel or gasoline. It was roughly estimated that the production cost of PHA-based biofuels should be around US$1200 per ton.
Authors:
Xiaojun Zhang; Rongcong Luo; Zhen Wang; Yuan Deng; Guo-Qiang Chen
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Biomacromolecules     Volume:  10     ISSN:  1526-4602     ISO Abbreviation:  Biomacromolecules     Publication Date:  2009 Apr 
Date Detail:
Created Date:  2009-04-13     Completed Date:  2010-02-01     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100892849     Medline TA:  Biomacromolecules     Country:  United States    
Other Details:
Languages:  eng     Pagination:  707-11     Citation Subset:  IM    
Affiliation:
Multidisciplinary Research Center, Shantou University, Shantou, Guangdong 515063, China.
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MeSH Terms
Descriptor/Qualifier:
1-Butanol / pharmacology
1-Propanol / pharmacology
3-Hydroxybutyric Acid / chemistry*
Energy-Generating Resources*
Esters / chemistry*
Ethanol / pharmacology
Fermentation
Gasoline
Hot Temperature
Polyhydroxyalkanoates / chemistry*
Pseudomonas putida / chemistry*,  growth & development
Chemical
Reg. No./Substance:
0/Esters; 0/Gasoline; 0/Polyhydroxyalkanoates; 300-85-6/3-Hydroxybutyric Acid; 64-17-5/Ethanol; 71-23-8/1-Propanol; 71-36-3/1-Butanol

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


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