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| Removal effect of adsorbent on 3-monochloropropane-1,2-diol esters, glycidyl esters and polycyclic aromatic hydrocarbons in vegetable oil |
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| DOI：10.19902/j.cnki.zgyz.1003-7969.240730 |
| KeyWord:adsorbent vegetable oil 3-monochloropropane-1,2-diol esters glycidyl esters polycyclic aromatic hydrocarbons |
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| Abstract: |
| To investigate the efficacy of adsorption in removing 3-monochloropropane-1,2-diol esters (3-MCPDE), glycidyl esters (GEs), and polycyclic aromatic hydrocarbons (PAHs) from vegetable oils, activated carbon, activated clay, and diatomaceous earth were employed as adsorbents to remove 3-MCPDE, GEs and PAHs from vegetable oil. The results showed that at a 0.1% adsorbent dosage(based on oil mass), there was a significant difference in the removal efficiency of GEs in corn oil by three adsorbents, with performance ranking as activated clay > activated carbon > diatomaceous earth. However, the removal rates for 3-MCPDE remained below 10% for all adsorbents. Increasing activated clay dosage, GEs and 3-MCPDE removal rates in corn oil increased, achieving complete elimination (100%) for GEs at 1% dosage while attaining 27.78% removal rate for 3-MCPDE. Notably, activated clay displayed variations in adsorption capacity for 3-MCPDE and GEs across different vegetable oils. Compared with activated clay, the combination of activated clay and activated carbon had a better removal effect on PAHs in corn oil, and achieved maximum removal rate of 81.57% for PAH4. In summary, different adsorbents present different adsorption and removal capabilities for harmful substances in vegetable oil, and suitable adsorbents need to be selected in practical applications. |
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