TREATMENT AND UTILISATION OF COFFEE HUSK FOR PREPARING ION EXCHANGE MATERIAL.

T RAMAKRISHNAN, S BALASUNDARAM, R RAJAGOPALAN, S C PILLAI

Abstract


The characteristics and composition of five types of coffee husk have been studied. An ion exchange material has been prepared from coffee husk by suitable treatment with sulphuric acid, sodium chloride and alum. The ion exchange material thus prepared has been found considerably efficient in removing calcium from 0.1% calcium chloride solution and fluorine from tap water to which sodium fluoride was added (about 2.5 p.p.m. as fluorine).

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