Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/44000
Title: One-step production of biodiesel through simultaneous esterification and transesterification from highly acidic unrefined feedstock over efficient and recyclable ZnO nanostar catalyst
Authors: Kwong, TL
Yung, KF 
Keywords: Biodiesel
Free fatty acid
Simultaneous esterification and transesterification
Zinc oxide
Issue Date: 2016
Publisher: Pergamon Press
Source: Renewable energy, 2016, v. 90, p. 450-457 How to cite?
Journal: Renewable energy 
Abstract: Zinc oxide (ZnO) nanostar synthesized by simple and up-scalable microwave-assisted surfactant free hydrolysis method was applied as catalyst for biodiesel synthesis through one-step simultaneous esterification and transesterification from high free fatty acid (FFA) contaminated unrefined feedstock. It was found that ZnO nanostar catalyst was reacted with FFA to yield zinc oleate (ZnOl) as intermediate and finally became zinc glycerolate (ZnGly). With the re-deposition of ZnGly back to the ZnO nanostar catalyst at the end of the reaction, the catalyst can be easily recovered and stay active for five cycles. Furthermore, the rate of transesterification is highly promoted by the presence of FFA (6 wt.%) which makes it an efficient catalyst for low grade feedstock like waste cooking oil and crude plant oils.
URI: http://hdl.handle.net/10397/44000
ISSN: 0960-1481
EISSN: 1879-0682
DOI: 10.1016/j.renene.2016.01.028
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

4
Last Week
0
Last month
Citations as of Aug 18, 2017

WEB OF SCIENCETM
Citations

3
Last Week
0
Last month
Citations as of Aug 1, 2017

Page view(s)

55
Last Week
1
Last month
Checked on Aug 21, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.