摘要
用溶剂萃取苦楝籽油中的游离脂肪酸,以降低其酸值。通过试验得到的最佳工艺条件为:以甲醇为溶剂,油与甲醇的料液比为1∶2.0(W/V),萃取温度35℃,萃取次数5次,每次萃取时间10 min。在最佳工艺条件下可将溶剂提取的苦楝籽毛油的酸值(KOH)从5.08 mg.g-1降低到0.55 mg.g-1,能够达到制备生物柴油对油品质的要求。该工艺与常规的碱炼降酸相比,操作简单,毛油炼耗大大降低,且萃取后的甲醇可回收再利用。
Solvent extraction was used to extract free fatty acid in Melia azedarach seed oil to reduce the acid -value of the oil to make biodies. By the single factor and orthogonal experiment, the optimum extraction conditions were established： the seed oil was extracted by absolute methanol at the ratio of oil to methanol 1 ： 2.0 under the temperature 35℃ for 5 times with the extraction time 10 min each time. The acid value of the oil reduce to 0.55 mg · g^-1 from 5.08 mg ·g^-1 after the extraction, which could meet the demand of the oil quality to convert biodiesel.
出处
《西北林学院学报》
CSCD
北大核心
2009年第2期112-114,共3页
Journal of Northwest Forestry University
基金
中日(NEDO)合作项目(160109)
陕西省林业厅重点科研项目(2003-16)
关键词
苦楝籽油
游离脂肪酸
溶剂萃取
酸值
生物柴油
Melia azedarach seed oil
free fatty acid
solvent extraction
acid value
biodiesel
