排序方式: 共有4条查询结果,搜索用时 140 毫秒
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B. Bharathiraja J. Jayamuthunagai R. Praveenkumar M. Jayakumar S. Palani 《International Journal of Green Energy》2015,12(10):1012-1017
Recent research and technology have provided promising outcomes to rely on biodiesel as the alternative and conventional source of fuel. The use of renewable sources constitutes the main stream of research. Waste Cooking Oil (WCO) was used for biodiesel production in this study. Lipase enzyme producing fungi Rhizopus oryzae 262 and commercially available pure lipase enzyme were used for comparative study in the production of FAAE. The whole cell biocatalyst and pure enzyme were immobilized using calcium alginate beads. It was prepared by optimizing with different molar ratios of calcium chloride and different percent sodium alginate. Entrapment immobilization was done for whole cell biocatalyst. PE was also immobilized by entrapment for the transesterification reaction. Four different solvents methanol, ethanol, n-propanol, n-butanol were used as the acyl acceptors. The reaction parameters like temperature, molar ratio, reaction time, and amount of enzyme to be used were also optimized for methanol alone. The same parameters were adopted for the other acyl acceptors too. Among the different acyl acceptors, methanol whose reaction parameters were optimized showed maximum conversion of triglycerides to FAAE - 94% with PE and 84% with WCB. On the whole, PE showed better catalytic converting ability with all the acyl acceptor compared to WCB, further study, it was observed that three consecutive and reversible reactions occurred in the interesterification of triglycerides. So, a kinetic model based on Michaelis-Menten equation with competitive substrate inhibition was used to find the maximum reaction rate Vi for the four solvents using pure enzyme and WCB. 相似文献
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Balasubramaniam B Sudalaiyadum Perumal A Jayaraman J Mani J Ramanujam P 《Waste management (New York, N.Y.)》2012,32(8):1539-1547
The petroleum fuel is nearing the line of extinction. Recent research and technology have provided promising outcomes to rely on biodiesel as the alternative and conventional source of fuel. The use of renewable source - vegetable oil constitutes the main stream of research. In this preliminary study, Waste Cooking Oil (WCO) was used as the substrate for biodiesel production. Lipase enzyme producing fungi Rhizopus oryzae 262 and commercially available pure lipase enzyme were used for comparative study in the production of Fatty Acid Alkyl Esters (FAAE). The whole cell (RO 262) and pure lipase enzyme (PE) were immobilized using calcium alginate beads. Calcium alginate was prepared by optimizing with different molar ratios of calcium chloride and different per cent sodium alginate. Entrapment immobilization was done for whole cell biocatalyst (WCB). PE was also immobilized by entrapment for the transesterification reaction. Seven different solvents - methanol, ethanol, n-propanol, n-butanol, iso-propanol, iso-butanol and iso-amyl alcohol were used as the acyl acceptors. The reaction parameters like temperature (30°C), molar ratio (1:3 - oil:solvent), reaction time (24 h), and amount of enzyme (10% mass ratio to oil) were also optimized for methanol alone. The same parameters were adopted for the other acyl acceptors too. Among the different acyl acceptors - methanol, whose reaction parameters were optimized showed maximum conversion of triglycerides to FAAE-94% with PE and 84% with WCB. On the whole, PE showed better catalytic converting ability with all the acyl acceptor compared to WCB. Gas chromatography analysis (GC) was done to determine the fatty acid composition of WCO (sunflower oil) and FAAE production with different acyl acceptors. 相似文献
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Tamilvanan Ayyasamy Balamurugan Kulendran Ashok Bragadeshwaran Selvakumar Pandiaraj Dhamotharan Subbaiyan Bharathiraja Moorthy Karthickeyan Viswanathan 《Environmental science and pollution research international》2021,28(26):33880-33898
Environmental Science and Pollution Research - The present experimental investigation is conducted to examine the working characteristics of compression ignition (CI) engine using oxygenated... 相似文献
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Padmavathy Saji Raveendran Chockalingam Murugan Paradesi Kamaraj Nithyanandhan Glivin Godwin Thangaraj Venkatesh Moorthy Bharathiraja 《Environmental science and pollution research international》2022,29(57):85945-85954
Environmental Science and Pollution Research - Climate change is an important environmental issue that is causing global temperatures to rise. The primary environmental targets are to reduce carbon... 相似文献
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