DECONTAMINATION OF TOLUENE POLLUTION IN WATER USING RAW WALNUTS SHELLS

Igor WINKLER, Ivan KUVILA

Abstract

Raw untreated walnut shells were tested as an adsorbent for the extraction of toluene pollution from water systems, and high cleaning efficiency (up to 28 % of the specific toluene extraction) was determined by the direct UV-photometry measurement of the residue toluene concentration. The adsorption efficiency of the shells is higher than that of some widely distributed carbon-based adsorbents. Extended use of shells is recommended since this material is very cheap and easily available as waste in some food processing factories. Further utilization of the used shells through burning is proposed as an environment friendly solution.

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