title: Cogeneration of biodiesel and nontoxic rapeseed meal from rapeseed through in-situ alkaline transesterification.
abstract: In-situ alkaline transesterification of rapeseed oil with methanol for the production of biodiesel and nontoxic rapeseed meal was carried out. Water removal from milled rapeseed by methanol washing was more effective than vacuum drying. The conversion rate of rapeseed oil into FAME was 92%, FAME mass was 8.81 g, glucosinolates content in remaining rapeseed meal was 0.12% by methanol washing, while by vacuum drying the values were 46%, 4.44 g, 0.58%, respectively. In the presence of 0.10 mol/L NaOH in methanol, with methanol/oil molar ratio of 180:1 and a 3h reaction at 40 °C, a conversion rate of 98% was achieved, and the glucosinolates content was reduce to 0.07%, a value which below the GB/T 22514-2008 standard in China. Thus the rapeseed meal can be used as a source of protein in animal feed. The FAME prepared through in-situ alkaline transesterification met the ASTM specifications for biodiesel.
authors.affiliation: School of Petrochemical Engineering, Changzhou University, Changzhou 213164, Jiangsu, PR China.
authors.forename: Junfeng
authors.initials: J
authors.lastname: Qian
authors.forename: Qiuhui
authors.initials: Q
authors.lastname: Yang
authors.forename: Fuan
authors.initials: F
authors.lastname: Sun
authors.forename: Mingyang
authors.initials: M
authors.lastname: He
authors.forename: Qun
authors.initials: Q
authors.lastname: Chen
authors.forename: Zhi
authors.initials: Z
authors.lastname: Yun
authors.forename: Lizhen
authors.initials: L
authors.lastname: Qin
mesh_terms: D000468:Alkalies / Q000737:chemistry*; D056804:Biofuels / Q000032:analysis*; D029741:Brassica rapa / Q000737:chemistry* / Q000633:toxicity; D004951:Esterification; D005229:Fatty Acids, Monounsaturated; D000432:Methanol / Q000737:chemistry*; D010936:Plant Extracts / Q000737:chemistry*; D010938:Plant Oils / Q000737:chemistry* / Q000302:isolation & purification*; D000074262:Rapeseed Oil; D014867:Water / Q000737:chemistry
chemical_list: D000468:Alkalies; D056804:Biofuels; D005229:Fatty Acids, Monounsaturated; D010936:Plant Extracts; D010938:Plant Oils; D000074262:Rapeseed Oil; D014867:Water; D000432:Methanol