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Journal ArticleDOI

Production of biodiesel from waste fryer grease using mixed methanol/ethanol system

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TLDR
In this article, a two-stage (acid and alkali catalyzed) method was used for biodiesel synthesis and more than 90% ester was obtained when two stage method is used compared to ∼ 50% esters in single stage alkaline catalyst.
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This article is published in Fuel Processing Technology.The article was published on 2007-05-01. It has received 286 citations till now. The article focuses on the topics: Transesterification & Biodiesel.

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Citations
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Journal ArticleDOI

Review of biodiesel composition, properties, and specifications

TL;DR: In this paper, the fatty acid (FA) profiles of 12 common biodiesel feedstocks were summarized, and it was shown that several fuel properties, including viscosity, specific gravity, cetane number, iodine value, and low temperature performance metrics are highly correlated with the average unsaturation of the FA profiles.
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Waste cooking oil – an economical source for biodiesel: a review

TL;DR: In this paper, a review of the methods for the transesterification of waste cooking oil and the performance of biodiesel obtained from waste cooking oils in a commercial diesel engine is presented, and the effects of the products formed in the frying process on biodiesel quality are examined.
Journal ArticleDOI

Biodiesel production, properties, and feedstocks

TL;DR: This review covers the process by which biodiesel is prepared, the types of catalysts that may be used for the production of biodiesel, the influence of free fatty acids on biodiesel production, the use of different monohydric alcohols in the preparation of biod diesel, the effects of blending biodiesel with other fuels on fuel properties, alternative uses for biod Diesel, and value-added uses of glycerol.
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A review on biodiesel production, combustion, emissions and performance

TL;DR: A literature review on biodiesel production, combustion, performance and emissions is presented in this article, where a vast majority of the scientists reported that short-term engine tests using vegetable oils as fuels were very promising but the longterm test results showed higher carbon built up and lubricating oil contamination resulting in engine failure.
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A review on novel processes of biodiesel production from waste cooking oil

TL;DR: In this paper, the effect of novel processes such as membrane reactor, reactive distillation column, reactive absorption, ultrasonic and microwave irradiation significantly influenced the final conversion, yield and in particular, the quality of product.
References
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Journal ArticleDOI

Biodiesel production from waste cooking oil: 1. Process design and technological assessment

TL;DR: The acid-catalyzed process using waste cooking oil proved to be technically feasible with less complexity than the alkali-catalystzed process, thereby making it a competitive alternative to commercial biodiesel production by the alkaline-catalyszed process.
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Biodiesel production from oils and fats with high free fatty acids

TL;DR: In this paper, a technique is described to reduce the free fatty acids content of these feedstocks using an acid catalyzed pretreatment to esterify the free acids before transesterifying the triglycerides with an alkaline catalyst to complete the reaction.
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Preparation and characterization of bio-diesels from various bio-oils.

TL;DR: For different esters from the same vegetable oil, methyl esters were the most volatile, and the volatility decreased as the alkyl group grew bulkier, however, the bio-diesels were considerably less volatile than the conventional diesel fuels.
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Catalytic production of biodiesel from soy-bean oil, used frying oil and tallow

TL;DR: In this article, three fatty materials, soy-bean oil, used frying oil and tallow, were transformed into two different types of biodiesel, by transesterification and amidation reactions with methanol and diethylamine respectively.
Journal ArticleDOI

Methanolysis of used frying oil

TL;DR: In this article, the authors investigated the effect of methanolysis of different oils at 25 °C with 0.5 − 1.5% potassium hydroxide or sodium hyroxide on ester yield and quality.
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