Journal ArticleDOI
Biodiesel Preparation by Lipase-Catalyzed Transesterification of Jatropha Oil
TLDR
Immobilization of lipase (Chromobacterium viscosum) on Celite-545 enhanced the biodiesel yield to 71% from 62% yield obtained by using free tuned enzyme preparation with a process time of 8 h at 40 °C.Abstract:
Alkyl esters of long chain fatty acid are called biodiesel. These esters can be obtained from vegetable oils by transesterification with methanol/ethanol. The transesterification can be carried out chemically or enzymatically. In the present work three different lipases (Chromobacterium viscosum, Candida rugosa, and Porcine pancreas) were screened for a transesterification reaction of Jatropha oil in a solvent-free system to produce biodiesel; only lipase from Chromobacterium viscosum was found to give appreciable yield. Immobilization of lipase (Chromobacterium viscosum) on Celite-545 enhanced the biodiesel yield to 71% from 62% yield obtained by using free tuned enzyme preparation with a process time of 8 h at 40 °C. Further addition of water to the free (1%, w v-1) and immobilized (0.5%, w v-1) enzyme preparations enhanced the yields to 73 and 92%, respectively. Immobilized Chromobacterium viscosum lipase can be used for ethanolysis of oil. It was seen that immobilization of lipases and optimization of...read more
Citations
More filters
Journal ArticleDOI
Progress and recent trends in biodiesel fuels
TL;DR: The most important variables affecting methyl ester yield during the transesterification reaction are the molar ratio of alcohol to vegetable oil and the reaction temperature as discussed by the authors, which is the commonly used alcohol in this process, due to its low cost.
Journal ArticleDOI
Industrial applications of microbial lipases
TL;DR: Various industrial applications of microbial lipases in the detergent, food, flavour industry, biocatalytic resolution of pharmaceuticals, esters and amino acid derivatives, making of fine chemicals, agrochemicals, use as biosensor, bioremediation and cosmetics and perfumery are described.
Journal ArticleDOI
Biodiesel production through the use of different sources and characterization of oils and their esters as the substitute of diesel: A review
S. P. Singh,Dipti Singh +1 more
TL;DR: In this paper, the authors reviewed the source of production and characterization of vegetable oils and their methyl ester as the substitute of the petroleum fuel and future possibilities of Biodiesel production.
Journal ArticleDOI
Biodiesel production--current state of the art and challenges.
TL;DR: Different biodiesel sources (edible and nonedible), virgin oil versus waste oil, algae-based biodiesel that is gaining increasing importance, role of different catalysts including enzyme catalysts, and the current state-of-the-art in biodiesel production are examined.
Book
Biodiesel: A Realistic Fuel Alternative for Diesel Engines
TL;DR: In this paper, the authors present an overview of the current technologies in Biodiesel production engine performance tests and future renewable energy and biofuel scenarios, as well as a discussion of biofuel economy and policies.
References
More filters
Journal ArticleDOI
Biodiesel production : a review
Fangrui Ma,Milford A. Hanna +1 more
TL;DR: In this article, the transesterification reaction is aected by molar ratio of glycerides to alcohol, catalysts, reaction temperature, reaction time and free fatty acids and water content of oils or fats.
Journal ArticleDOI
Biodiesel fuel production by transesterification of oils.
TL;DR: Biodiesel (fatty acid methyl esters), which is derived from triglycerides by transesterification with methanol, has attracted considerable attention during the past decade as a renewable, biodegradable, and nontoxic fuel.
Journal ArticleDOI
Variables affecting the yields of fatty esters from transesterified vegetable oils
TL;DR: In this paper, the authors showed that the conversion to methyl, ethyl and butyl esters from cottonseed, peanut, soybean and sunflower oils can be done in 1 hr with an alkaline catalyst.
Journal ArticleDOI
Properties and use of jatropha curcas oil and diesel fuel blends in compression ignition engine
TL;DR: In this paper, the effect of temperature on the viscosity of biodiesel and jatropha oil was studied and the performance of a single cylinder C.I. engine using blends of varying proportions of Jatropha curcas oil and diesel was evaluated.
Journal ArticleDOI
Exploitation of the tropical oil seed plant Jatropha curcas L.
TL;DR: Newly developed biotechnological processes related to the exploitation of J. curcas include the genetic improvement of the plant, biological pest control, enzyme-supported oil extraction, anaerobic fermentation of the press cake and the isolation of anti-inflammatory substances and wound-healing enzymes.