无患子油脂的提取_理化性质及其制备生物柴油的研究_刘光斌 . Study on Extraction and Physiochemical Properties of Sapindus Mukorossi Seed Oil and Preparation of Biodiesel

Abstract

In this paper,we studied the extraction conditions,physiochemical Properties and the biodiesel preparation technique of sapindus mklorossi seed oil.The results showed that the optimal extraction conditions of oil:petroleum ether volume and seed mass ratio of 5:1,extraction time of 2 h,extraction temperature of 70 ℃,and extraction yield of 42.0%.The oil mainly contained many fatty acids such as palmitic acid,stearic acid,oleic acid,linoleic acid,linolenic acid,arachidic acid,eicosenoic acid,docosanoic acid and sinapinic acid and.among these fatty acids unsaturated fatty acid content was mass fraction of 91.85%.And main physicochemical properties of the oil were acid value of 4.1 mg KOH/g,saponification value of 184.83 mg KOH/g,iodine value of 110.16 gI2/100 g and refractive index of 1.480 8,and its fatty acid composition,mass fraction and physicochemical properties meet biodiesel standards.Obtained from EMBED Equation.3(3 EMBED Equation.3(MERGEFORMAT) orthogonal tests,the optimal conditions of the biodiesel preparation of sapindus mklorossi oil transesterification were as follows:oleyl alcohol molar ratio of 1:6,catalyst dosage of 1.2 % of the oil mass,reaction time of 2 h,reaction temperature of 60 ℃ and conversion ratio of 93.6%.And the detection found,that the sapindus mklorossi biodiesel performance indices were close to those of 0# diesel and GB/T 20828—2007 Diesel Engine Fuels Blended Use of Biodiesel,So it is a sort of ideal substitute for 0# diesel.