酸碱改性木质活性炭对棕榈油中3-MCPD酯的吸附脱除效果  

Adsorptive removal efficiency of 3-MCPD esters from palm oilby acid-base modified wood-activated carbon

作　　者：侯杰 纪俊敏[1] 孙尚德[1,2] HOU Jie;JI Junmin;SUN Shangde(College of Food Science and Technology,Henan University of Technology,Zhengzhou 450001,China;Food Laboratory of Zhongyuan,Luohe 462300,China)

机构地区：[1]河南工业大学粮油食品学院,河南郑州450001 [2]中原食品实验室,河南漯河462300

出　　处：《轻工学报》2024年第1期48-56,共9页Journal of Light Industry

基　　金：国家“十四五”重点研发课题项目(2021YFD2100302);河南工业大学高层次人才科研启动基金项目(2021BS042);河南工业大学自科创新基金项目(2021ZKCJ02)。

摘　　要：以精炼棕榈油为研究对象,研究4种碳纳米吸附剂(木质活性炭粉末、椰壳活性炭粉末、煤质活性炭粉末和多壁碳纳米管)对3-氯丙醇(3-MCPD)酯的吸附脱除效果,并对最佳吸附剂进行酸碱改性,探究改性后吸附剂添加量、吸附时间和吸附温度对棕榈油中3-MCPD酯吸附脱除效果的影响。结果表明:对3-MCPD酯的脱除效果为木质活性炭粉末>多壁碳纳米管>椰壳活性炭粉末>煤质活性炭粉末,整体脱除效果欠佳;经4 mol/L H_(3)PO_(4)改性后的木质活性炭粉末,吸附性能增强,在吸附剂添加量为5.85%、吸附时间为47 min、吸附温度为103℃的最佳吸附条件下,对棕榈油中3-MCPD酯的脱除率可达71.82%。使用H_(3)PO_(4)改性木质活性炭可作为脱除食用油中3-MCPD酯的一个有效方法。The adsorptive removal effects of four adsorbents(wood-activated carbon powder,coconut shellactivated carbon powder,coal-activated carbon powder,and multi-walled carbon nanotubes)on 3-monochloropropane-1,2-diol(3-MCPD)esters were probed using refined palm oil as the research object.And acid-base modification was carried out on the optimum adsorbent to investigate the effects of adsorbent addition amount,adsorption time,and adsorption temperature on the adsorptive removal efficiency of 3-MCPD esters in palm oil.The results showed that the removal efficiency of 3-MCPD esters was as follows:wood-activated carbon powder>multi-walled carbon nanotubes>coconut shell-activated carbon powder>coal-activated carbon powder,but the overall removal effects were poor.The adsorption performance of the wood-activated carbon powder modified with 4 mol/L H_(3)PO_(4) was improved.Under the optimal adsorption conditions of 5.85%addition,47 min,and 103℃,the removal efficiency of 3-MCPD esters from palm oil could reach 71.82%.Wood-activated carbon modified by H_(3)PO_(4) could be an effective strategy for the removal of 3-MCPD esters from edible oil.

关 键 词：木质活性炭 酸碱改性 棕榈油 3-MCPD酯 吸附脱除 

分 类 号：TS221[轻工技术与工程—粮食、油脂及植物蛋白工程]