地沟油中盐分的检测及脱除方法探讨

Study on Detection and Desalination Method in Waste Oil Salinity

采用ICP-MS方法对地沟油试样进行了检测,结果表明,其中铬、铅、铁、铜、钠等金属含量均远高于食用油正常标准范围。还采用活性炭、凹凸棒土作为吸附剂,炼油企业的原油脱盐剂对地沟油中的金属元素的脱除进行了探讨研究,实验结果表明,这三种物质均能达到理想的脱盐效果,但若选择性脱除地沟油中的金属含量时需优化操作温度及试剂用量比以取得更好的效果。

The waste oil samples were detected by ICP- MS method. The result showed that the metal content of Cr,Pb,Fe,Cu,and Na,were much higher than those in edible oil. It took the activated carbon,concave and convex clay,and the crude oil desalting agent as the desalination absorbent to remove the metal. If the temperature and dose had been optimized,it would make the selective removal of some metal.