|
| Continuously removal of PAH4 from natural tocopherol oil |
| |
| DOI： |
| KeyWord:natural tocopherol oil PAH4 removal |
| FundProject: |
|
| Hits: 1337 |
| Download times: 1083 |
| Abstract: |
| A method of continuously removing PAH4 from natural tocopherol oil through a fixed bed with granular activated carbon was established.The effects of ratio of material to solvent, system temperature and adsorption time on the removal effect of PAH4 were studied by single factor experiment and orthogonal experiment, and the effect of removal process on the content of natural tocopherol was investigated. The results showed that when 95% ethanol was used as solvent, the ratio of natural tocopherol oil to solvent was 1∶ 3, system temperature was 40 ℃ and stayed in a fixed bed filled with granular activated carbon for 4 h, the content of PAH4 in natural tocopherol oil was 7.3 μg/kg (benzo(a)-pyrene content 1.8 μg/kg), which could meet the EU limit standard(benzo(a)-pyrene content less than and equal to 2 μg/kg, PAH4 content less than and equal to 10 μg/kg), and the content of tocopherol was not significantly affected by the removal process. |
| View full text View/Add Comment Download reader |
| Close |
|
|
|
