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Pyrolytic characteristics of biodiesel prepared from lipids accumulated in diatom cells with growth regulation

Paper ID Volume ID Publish Year Pages File Format Full-Text
20247 43165 2015 6 PDF Available
Title
Pyrolytic characteristics of biodiesel prepared from lipids accumulated in diatom cells with growth regulation
Abstract

Dynamic compositions of lipids accumulated in two diatoms Chaetoceros gracilis and Nitzschia closterium cultured with nitrogen and silicon deprivation were studied. It was found that short-chain fatty acids (C14–C16) content was much higher than long-chain fatty acids (C18–C20) content in lipids of two diatoms. The pyrolytic characteristics of biodiesel made from two diatoms and two plant seeds were compared by thermogravimetric analysis. The highest activation energy of 46.68 kJ mol−1 and the minimum solid residue of 25.18% were obtained in the pyrolysis of biodiesel made from C. gracilis cells, which were cultured with 0.5 mmol L−1 of nitrogen (no silicon) and accumulated the minimum polyunsaturated fatty acid (C20:5). The pyrolysis residue percentage of C. gracilis biodiesel was lower than that of N. closterium biodiesel and higher than those of plant (Cormus wilsoniana and Pistacia chinensis) biodiesels.

Keywords
Biodiesel; Diatom; Fatty acids; Pyrolysis; Thermogravimetric analysis
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Pyrolytic characteristics of biodiesel prepared from lipids accumulated in diatom cells with growth regulation
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Bioscience and Bioengineering - Volume 120, Issue 2, August 2015, Pages 161–166
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us