摘要
[目的]对花椒籽油的2种降酸方法进行了研究,考察不同因素对花椒籽油降酸的影响。[方法]以高酸值花椒籽油为原料,采用萃取和酯化2种方法对其进行降酸处理。采用单因素试验,研究了醇油摩尔比、反应时间、反应温度、催化剂等因素对降酸效果的影响。[结果]对于花椒籽毛油的降酸,酯化降酸的效果明显优于萃取降酸,通过一次降酸可使花椒籽油的酸值低于2 mgKOH/g。[结论]对于合成生物柴油的要求而言,萃取作为花椒籽油的降酸方法效果还不够理想;采用酯化反应降酸,醇油比越大,酸值降低越多,同时,催化剂浓度、反应温度和反应时间对酯化效果影响较为显著。
[Objective]The aim was to study two de-acidification methods for Z.bungeanum seed oil（ZSO） and investigate the effect of different factors on de-acidification of Z.bungeanum.[Methods]Taking ZSO with high-acid value as raw material,and it was deacidified by extraction and esterification.Using single factor experiment,the effects of molar ratio of methanol/oil,reaction time,reaction temperature and catalyst on de-acidification effects were studied.[Result]The esterification on de-acidification was better than extraction for ZSO,and the acid value can be reduced to 2 mgKOH/g by one time.[Conclusion]For the demand of biodiesel synthesis,the extraction effect for ZSO is not ideal;and using esterification on de-acidification,the higher the ratio of methanol/oil,the more reduction the acid value,at the same time,the effect of catalyst concentration,reaction temperature and reaction time on esterification is more remarkable.
出处
《安徽农业科学》
CAS
2012年第11期6488-6489,6528,共3页
Journal of Anhui Agricultural Sciences
基金
国家自然科学基金项目(50976125)
第二炮兵工程大学创新性研究项目(ZDXKBQB17)
关键词
花椒籽油
萃取
酯化
酸值
Zanthoxylum bungeanum seed oil
Extraction
Esterification
Acid value
作者简介
张剑（1977-，男，陕西渭南人，讲师，从事新型生物柴油研究，E-mail：zzjj1206163．com
