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《China Oils and Fats》 2004-10
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Comprehensive utilization of spent bleaching earth produced in oil refining

WU Li-rong (Xi'an Oil & Fats Research & Design Institute, State Administration of Grain Reserve of P.R.C.,710082Xi'an,China)  
In the refining process of oils,2%~5% activated bleaching earth usually is used.If the spent bleaching earth can not be treated in time,it will pollute the environment.In order to promote the utilization of spent bleaching earth,the utilization ways were summarized.The oil can be recovered from spent bleaching earth by pressing,solvent or water extraction.The spent bleaching earth can be as the material of household cleanser,washing paste,feed,reboflavin production and fertilizer.Furthermore,the spent bleaching earth treated by acid can be as the sorbent of Cr,pesticide and so on.Through these ways,the spent bleaching earth can be made good use of.
【Key Words】: oils refining spent bleaching earth utilization summary
【CateGory Index】: TQ644
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