Novozym 435-catalysed transesterification of crude soya bean oils for biodiesel production in a solvent-free medium

2004 ◽  
Vol 40 (2) ◽  
pp. 187 ◽  
Author(s):  
Yuan-yuan Xu ◽  
Wei Du ◽  
Jing Zeng ◽  
De-hua Liu
Keyword(s):  
Soya Bean ◽  
Solvent Free ◽  
Biodiesel Production ◽  
Novozym 435 ◽  
Free Medium ◽  
Crude Soya

Optimization of batch Novozym435-catalyzed transesterification of waste cooking oil with methanol for biodiesel production in a solvent-free medium

2017 ◽  
Vol 39 (9) ◽  
pp. 911-925 ◽  
Author(s):  
Abdallah R. Ismail ◽  
Samy B. El-Henawy ◽  
Mohamed A. Betiha ◽  
Salem S. Abu Amr ◽  
Nour Sh. El-Gendy ◽  
...  
Keyword(s):  
Waste Cooking Oil ◽  
Solvent Free ◽  
Biodiesel Production ◽  
Free Medium ◽  
Cooking Oil

Optimisation of Novozym-435-catalysed esterification of fatty acid mixture for the preparation of medium- and long-chain triglycerides (MLCT) in solvent-free medium

2013 ◽  
Vol 49 (4) ◽  
pp. 1001-1011 ◽  
Author(s):  
Kaizhou Yang ◽  
Yanlan Bi ◽  
Shangde Sun ◽  
Guolong Yang ◽  
Sumin Ma ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Fatty Acid Mixture ◽  
Solvent Free ◽  
Novozym 435 ◽  
Acid Mixture ◽  
Free Medium ◽  
Long Chain Triglycerides ◽  
Long Chain

scholarly journals Solvent-Free Benzylation of Glycerol by Benzyl Alcohol Using Heteropoly Acid Impregnated on K-10 Clay as Catalyst

Catalysts ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 34
Author(s):  
Devendra P. Tekale ◽  
Ganapati D. Yadav ◽  
Ajay K. Dalai
Keyword(s):  
Heterogeneous Catalysis ◽  
Benzyl Alcohol ◽  
Batch Reactor ◽  
Value Added ◽  
Solvent Free ◽  
Biodiesel Production ◽  
Area Measurement ◽  
Solid Catalyst ◽  
Glycerol Ether ◽  
Insight Into

Value addition to glycerol, the sole co-product in biodiesel production, will lead to reform of the overall biodiesel economy. Different valuable chemicals can be produced from glycerol using heterogeneous catalysis and these valuable chemicals are useful in industries such as cosmetics, pharmaceuticals, fuels, soap, paints, and fine chemicals. Therefore, the conversion of glycerol to valuable chemicals using heterogeneous catalysis is a noteworthy area of research. Etherification of glycerol with alkenes or alcohols is an important reaction in converting glycerol to various value-added chemicals. This article describes reaction of glycerol with benzyl alcohol in solvent-free medium by using a clay supported modified heteropolyacid (HPA), Cs2.5H0.5PW12O40/K-10 (Cs-DTP/K-10) as solid catalyst and its comparison with other catalysts in a batch reactor. Mono-Benzyl glycerol ether (MBGE) was the major product formed in the reaction along with formation of di-benzyl glycerol ether (DBGE). The effects of different parameters were studied to optimize the reaction parameters. This work provides an insight into characterization of Cs2.5H0.5PW12O40/K-10 catalyst by advanced techniques such as surface area measurement, X-ray analysis, ICP-MS, FT-IR, and SEM. Reaction products were characterized and confirmed by using the GCMS method. The kinetic model was developed from an insight into the reaction mechanism. The apparent energy of activation was found to be 18.84 kcal/mol.

Synthesis of (Z)-3-hexen-1-yl butyrate in hexane and solvent-free medium usingMucor mieheiandCandida antarcticalipases

1997 ◽  
Vol 74 (11) ◽  
pp. 1471-1475 ◽  
Author(s):  
S. Bourg-Garros ◽  
N. Razafindramboa ◽  
A. A. Pavia
Keyword(s):  
Solvent Free ◽  
Free Medium

Novozym 435-catalyzed synthesis of fatty acid ethyl esters from soybean oil for biodiesel production

2014 ◽  
Vol 61 ◽  
pp. 131-137 ◽  
Author(s):  
J.M. Cerveró ◽  
J.R. Álvarez ◽  
S. Luque
Keyword(s):  
Fatty Acid ◽  
Soybean Oil ◽  
Fatty Acid Ethyl Esters ◽  
Ethyl Esters ◽  
Biodiesel Production ◽  
Novozym 435

scholarly journals Ultrasound affects the selectivity and activity of immobilized lipases applied to fatty acid ethyl ester synthesis

2019 ◽  
Vol 42 ◽  
pp. e46582 ◽  
Author(s):  
José Carlos Quilles Junior ◽  
Ana Lucia Ferrarezi ◽  
Janaina Pires Borges ◽  
Jessika Souza Rossi ◽  
Daniela Alonso Bocchini ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Ethyl Ester ◽  
Acid Ethyl Ester ◽  
Fatty Acid Ethyl Ester ◽  
Ethyl Linoleate ◽  
Biodiesel Production ◽  
Novozym 435 ◽  
Thermomyces Lanuginosus ◽  
Ethyl Palmitate ◽  
Immobilized Lipases

Hydrophobic carriers can be used to improve the activity, stability and other properties of enzymes. Physical agents, like ultrasound, may also contribute to improving the dispersion and collision of the reagent molecules, decreasing the reaction time and intensifying the catalytic process. However, its effect on the enzyme activity and reaction selectivity is still not entirely understood. Here, enzyme modulation of immobilized lipases was studied under pulsed ultrasound irradiation in fatty acid ethyl ester (FAEE) synthesis for biodiesel production. Novozym 435® and two commercial lipases from Thermomyces lanuginosus and Rhizomucor miehei, immobilized on Octadecyl-Sepabeads were used as a biocatalyst in the transesterification reaction of vegetable oils and ethanol. The use of ultrasound associated with catalysis by the Novozym 435 increased the production of FAEE by about three times (from 8.9 to 26.4%) using soybean oil and changes were observed in the profile of the products. From the sonicated reaction, ethyl-palmitate production decreased from 23.4 to 11.7%, while the ethyl-linoleate content rose from 47.5 to 59.2%. On the other hand, the T. lanuginosus lipase was less affected by sonication with the overall production of FAEE increasing from 17.2 to 24.1%, with ethyl-palmitate and ethyl-linoleate content changing from 16.2 to 17.5% and 55.0 to 47.8%, respectively. Although the changes in the production yield are not too high, the main idea here was to show that ultrasound modulates the lipase activity as well as its respective selectivity. Thus, ultrasound, is responsible for changing the ethyl ester production, which can be applied to many other biochemical processes to improve or modulate their synthesis yield.

scholarly journals The use of calcium sulphate dihydrate (CaSO4.2H2O) as a bleaching agent for crude soya bean vegetable oil

2019 ◽  
Vol 35 ◽  
pp. 802-807 ◽  
Author(s):  
D.P. Chakawa ◽  
M. Nkala ◽  
N. Hlabangana ◽  
E. Muzenda
Keyword(s):  
Vegetable Oil ◽  
Calcium Sulphate ◽  
Soya Bean ◽  
Bleaching Agent ◽  
Crude Soya

ChemInform Abstract: ALDOL CONDENSATIONS ON BASIC ALUMINA: THE FACILE SYNTHESES OF CHALCONES AND ENONES IN A SOLVENT-FREE MEDIUM

1985 ◽  
Vol 16 (43) ◽  
Author(s):  
R. S. VARMA ◽  
G. W. KABALKA ◽  
L. T. EVANS ◽  
R. M. PAGNI
Keyword(s):  
Solvent Free ◽  
Free Medium ◽  
Basic Alumina

Immobilized lipase-catalyzed ethanolysis of sunflower oil in a solvent-free medium

1998 ◽  
Vol 75 (6) ◽  
pp. 691-695 ◽  
Author(s):  
Boulbada Selmi ◽  
Daniel Thomas
Keyword(s):  
Sunflower Oil ◽  
Immobilized Lipase ◽  
Solvent Free ◽  
Free Medium

Improvement of enzymatic biodiesel production by controlled substrate feeding using silica gel in solvent free system

2011 ◽  
Vol 49 (4) ◽  
pp. 402-406 ◽  
Author(s):  
Myunggu Lee ◽  
Junhak Lee ◽  
Dohoon Lee ◽  
Jaehoon Cho ◽  
Sangyong Kim ◽  
...  
Keyword(s):  
Silica Gel ◽  
Solvent Free ◽  
Biodiesel Production ◽  
Free System ◽  
Solvent Free System ◽  
Substrate Feeding
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