油脂中邻苯二甲酸酯类塑化剂的吸附脱除研究

摘要

The effects of adsorbent type (10 types of adsorbents),adsorbent dosage,adsorption tempera-ture and adsorption time on the removal of 5 plasticizers in camellia oil were investigated.The results showed that the optimal adsorbent was H -2 activated carbon,followed by 55F -A activated carbon, 55JN -C activated carbon,attapulgite and activated clay,when the adsorption temperature was 110 ℃, the adsorption time was 30 min and the dosage of adsorbent was 2.0%.Under the optimal condition (the adsorption temperature was 130 ℃,the adsorption time was 50 min and the dosage of the H -2 activated carbon was 2.0%),the removal rates of DMP,DEP,DIBP,DBP and DEHP were 76.7%,50.7%, 52.4%,22.2% and 6.1%,respectively.Removing DMP,DEP and DIBP from camellia oil by adsorp-tion was efficient,while inefficient for high molecular weight DBP and DEHP.%采用10种不同的吸附剂对冷榨茶籽油中邻苯二甲酸酯类塑化剂进行吸附脱除，考察了吸附剂种类、吸附剂用量、吸附温度及吸附时间对受试油样中5种塑化剂组分脱除效果的影响。结果表明：在吸附温度110℃、吸附时间30 min、吸附剂用量为油重的2％时，H －2型活性炭的脱除效果较好，其次为55F －A 型活性炭、55JN －C 型活性炭、凹凸棒土和活性白土。采用 H －2型活性炭用量为2．0％、吸附温度130℃、吸附时间50 min 的优化条件，DMP、DEP、DIBP、DBP 及 DEHP 的脱除率分别为76．7％、50．7％、52．4％、22．2％、6．1％。吸附法对茶籽油中 DMP、DEP、DIBP 的脱除效果较好，但对较大分子量塑化剂组分 DBP 和 DEHP 的脱除效果较差。