Journal
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
Volume 4, Issue 1, Pages 818-824Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jece.2015.12.031
Keywords
Biodiesel; Waste cooking oil; Modified coal fly ash; Process strengthening; Ultrasound
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Funding
- Scientific Research Starting Foundation for high-level professionals in Yulin University of China [12GK04]
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This paper investigated the effects of modified coal fly ash as catalyst on the waste cooking oil (WCO) conversion into biodiesel under ultrasound strengthened action. Experimental results showed that the modified coal fly ash catalyst could improve biodiesel yields under ultrasound assisting system, and the maximum biodiesel yield from waste cooking oil reached 95.57% under a molar ratio of methanol to WCO of 10.71: 1, a 4.97 wt% modified CFA catalyst (based on oil weight), and a 1.41 min reaction time. The reusability of the modified coal fly ash catalyst was well, and the conversion yield was still higher than 90% after the catalyst was used for 8 times repeatedly. (C) 2015 Elsevier Ltd. All rights reserved.
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