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Position: Home > Articles > Deacidification of high-acid rice bran oil by esterification for the raw material of biodiesel Transactions of the Chinese Society of Agricultural Engineering 2009,25 (8) 215-219

高酸值米糠油酯化脱酸成生物柴油原料

作  者:
曾庆梅;韩抒;张冬冬;李志强;司文攻
单  位:
合肥工业大学农产品生物化工教育部研究中心
关键词:
酯化;催化剂;生物柴油;米糠油;氧化锌
摘  要:
为充分利用高酸值米糠毛油,将其脱酸成生物柴油原料。采用酯化脱酸方法,通过对多种酯化脱酸催化剂的比较,结果表明氧化锌具有较强的催化活性。氧化锌作为米糠油酯化脱酸的催化剂,分别考察了甘油添加量、催化剂添加量、反应温度、反应时间对酯化脱酸的影响。得到了以下较优工艺参数:真空度为0.1MPa,甘油添加量为理论甘油量1.044g,催化剂添加量为油质量的0.1%,反应温度200℃,反应时间6h。在此优化条件下,米糠油的酸值从38.14mg/g降至5.17mg/g,满足了作为生物柴油生产原料的要求。
译  名:
Deacidification of high-acid rice bran oil by esterification for the raw material of biodiesel
作  者:
Zeng Qingmei,Han Shu,Zhang Dongdong,Li Zhiqiang,Si Wengong (Engineering Research Center of Bio-process,Ministry of Education,Hefei University of Technology,Hefei 230009,China)
关键词:
esterification,catalysts,biodiesel,rice bran oil,ZnO
摘  要:
To take full advantage of the high-acid rice bran crude oil,the authors carried out experiments to deacidify high-acid rice bran crude oil by esterification for the raw material of biodiesel.In this paper,the esterifying catalytic activity of several catalysts and the influence of glycerol dosage,catalyst dosage,reaction temperature and reaction time on deacidification were investigated.The results showed that ZnO had a strong catalytic activity.The optimum conditions of esterification with ZnO were the theoretical amount of glycerol dosage(1.044 g),the 0.1%(m/m) ZnO dosage,the reaction temperature 200℃ and the reaction time 6 h.The acid value of the rice bran oil after esterification drops from 38.14 mg/g to 5.17 mg/g under above optimum conditions.This low-acid rice bran oil is suitable as the raw material of biodiesel.

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