Solubilities of six cottonseed oil fatty acid methyl esters in methanol

1983 ◽  
Vol 60 (12) ◽  
pp. 2007-2008 ◽  
Author(s):  
Z. M. Zarins ◽  
R. K. Willich ◽  
R. O. Feuge
Keyword(s):  
Fatty Acid ◽  
Fatty Acid Methyl Esters ◽  
Methyl Esters ◽  
Cottonseed Oil ◽  
Acid Methyl

Evaluation of Dominant Parameters in Lipase Transesterification of Cottonseed Oil

2019 ◽  
Vol 62 (2) ◽  
pp. 467-474 ◽  
Author(s):  
Stanley Anderson ◽  
Terry Walker ◽  
Bryan Moser ◽  
Caye Drapcho ◽  
Yi Zheng ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Oxidative Stability ◽  
Fatty Acid Methyl Esters ◽  
Methyl Esters ◽  
Cottonseed Oil ◽  
Molar Ratio ◽  
Chromatography Method ◽  
Induction Periods ◽  
Acid Methyl ◽  
The Difference

Abstract. Eversa Transform was used as an enzymatic catalyst to transform glandless and crude (heavy pigment) cottonseed oils into biodiesel. The oils were reacted with methanol at a 6:1 molar ratio with modified amounts of water, lipase, and temperature. Reactions were conducted in the presence of lipase and water at doses of 2, 5, and 8 wt% and 1, 3, and 6 wt%, respectively. Product composition and conversion were determined using the gas chromatography method of ASTM D6584. Oxidative stability was determined following EN 15751. The conversion to fatty acid methyl esters averaged 98.5% across all samples. Temperature had the most significant effect on conversion (p < 0.0035). Lipase and water dosages did not affect conversion, while each had an effect with temperature that was significant across the difference between 3 and 1 wt% water content and between 8 and 5 wt% enzyme content between the two temperatures (p = 0.0018 and 0.0153), respectively. Induction periods (oxidative stability) of the glandless and crude cottonseed oils were significantly different, but there was no difference between the two oil conversions based on oil type. Keywords: Biodiesel, Cottonseed oil, Fatty acid methyl esters, Lipase, Oxidative stability, Transesterification.

Enhancing Cold Flow Property of Biodiesel Derived from Cottonseed Oil

2013 ◽  
Vol 781-784 ◽  
pp. 2373-2377
Author(s):  
Xiao Ling Chen ◽  
Xiu Chen ◽  
Ling Ling Cai ◽  
Yong Bin Lai ◽  
Ya Li Sun ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Fatty Acid Methyl Esters ◽  
Methyl Esters ◽  
Flow Property ◽  
Cottonseed Oil ◽  
Chemical Compositions ◽  
Flow Properties ◽  
Cold Flow ◽  
Cold Flow Properties ◽  
Acid Methyl

The chemical compositions of cottonseed oil biodiesel (CSME) are analyzed by using the gas chromatograph-mass spectrometer (GC-MS). The cold flow properties of CSME is studied by cold filer plugging point (CFPP) tester and crystallization mechanism of biodiesel, three approaches for enhancing cold flow properties of CSME are put forward: crystallization fractionation; blending with winter petrodiesel; and treating with cold flow improver (CFI) additives. A significant correlation model is proposed for predicting CFPP by CSME blending ratio. The study shows that the CSME is mainly composed of saturated fatty acid methyl esters (SFSMEs): C14:0~C24:0 and unsaturated fatty acid methyl esters (UFAMEs): C16:1~C22:1, C18:2 and C18:3. The mass fraction of SFAME and UFAME is 32.12 and 66.19%, respectively. The CFPP of CSME is 6 °C. Crystallization fractionation and blending with-10PD decrease the CFPP of CSME to-1 °C and-12 °C, respectively. Adding Flow Fit, Flow Fit K and T818 additives 1.5 v% decreases the CFPP of CME and CME/-10PD to 0 and-26 °C, respectively. This study has effectively enhanced cold flow properties of CSME and provides technical support for using CSME.

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