Enhanced lipid extraction from algae using free nitrous acid pretreatment

Bai, Xue, Naghdi, Forough Ghasemi, Ye, Liu, Lant, Paul and Pratt, Steven (2014) Enhanced lipid extraction from algae using free nitrous acid pretreatment. Bioresource Technology, 159 36-40. doi:10.1016/j.biortech.2014.01.133


Author Bai, Xue
Naghdi, Forough Ghasemi
Ye, Liu
Lant, Paul
Pratt, Steven
Title Enhanced lipid extraction from algae using free nitrous acid pretreatment
Journal name Bioresource Technology   Check publisher's open access policy
ISSN 0960-8524
1873-2976
Publication date 2014-05-01
Sub-type Article (original research)
DOI 10.1016/j.biortech.2014.01.133
Volume 159
Start page 36
End page 40
Total pages 5
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Language eng
Abstract Lipid extraction has been identified as a major bottleneck for large-scale algal biodiesel production. In this work free nitrous acid (FNA) is presented as an effective and low cost pretreatment to enhance lipid recovery from algae. Two batch tests, with a range of FNA additions, were conducted to disrupt algal cells prior to lipid extraction by organic solvents. Total accessible lipid content was quantified by the Bligh and Dyer method, and was found to increase with pretreatment time (up to 48h) and FNA concentration (up to 2.19mg HNO2-N/L). Hexane extraction was used to study industrially accessible lipids. The mass transfer coefficient (k) for lipid extraction using hexane from algae treated with 2.19mg HNO2-N/L FNA was found to be dramatically higher than for extraction from untreated algae. Consistent with extraction results, cell disruption analysis indicated the disruption of the cell membrane barrier.
Keyword Free nitrous acid
Lipid extraction
Algae
Biodiesel
Cell disruption
Microalgae
Biodiesel
Culture
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
School of Agriculture and Food Sciences
Official 2015 Collection
 
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