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| 脱色工艺对菜籽油中多环芳烃脱除效果的影响 |
| Effect of bleaching process on removal of polycyclic aromatic hydrocarbons from rapeseed oil |
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| DOI： |
| 中文关键词: 脱色 吸附剂 菜籽油 多环芳烃 |
| 英文关键词:bleaching adsorbent rapeseed oil PAHs |
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| 中文摘要: |
| 研究了脱色工艺对菜籽油中多环芳烃（PAHs）的脱除作用。通过单因素实验分别考察了吸附剂种类及添加量、脱色温度和脱色时间对菜籽油中PAHs的脱除效果，并采用正交实验对吸附脱除菜籽油中PAHs的工艺条件进行优化。结果表明：在1#活性炭和活性白土复合吸附剂的添加量（占油质量）为0.25%+1%、脱色时间30 min、脱色温度110?℃时，BaP和PAH4的残留量分别为023、117 μg/kg，均达到欧盟No 835/2011的限量值要求，且PAH4脱除率达到94.7%。 |
| 英文摘要: |
| The effect of bleaching process on the removal of polycylic aromatic hydrocarbons(PAHs) from rapeseed oil was investigated. The effects of adsorbent type, adsorbent dosage, bleaching temperature and bleaching time on removal of PAHs were investigated by single factor experiment, and the optimal conditions of simultaneous removing PAHs were obtained by orthogonal experiment as follows:dosage (based on the mass of rapeseed oil) of mixed adsorbents of 1# activated carbon and activated clay 025%+1%, bleaching time 30 min and bleaching temperature 110?℃．Under the optimal conditions, the residual contents of BaP and PAH4 in rapeseed oil were 0.23 μg/kg and 1.17 μg/kg respectively, meeting the limits set by EU No 835/2011,and the removal rate of PAH4 reached 94.7%． |
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