Studies on removal of chloride from soak liquor

Sekaran, G. ; Krishnamurthy, V. ; Madhurakrishna, W. ; Santappa, M. (1981) Studies on removal of chloride from soak liquor Leather Science, 28 . pp. 257-264. ISSN 0023-9771

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Rice bran is converted into activated charcoal by treating wilh conc. H2S04 and is used as an adsorbent for the removal of chloride present in the tannery soak liquor upto a concentration of 35,000 mgm/litre. It was found to be effetive at the pH. Efrect of the constituents of rice bran on adsorption has also been studied. Infra-red spectra of the samples and the T. L. C. showed that the adsorption is only a physical phenomenon. The rate of adsorption of chloride over the charcoal was determined as 9.150 × 10-3/min. The adsorption passes through triple layer formation as shown by adsorption isotherm. The charcoal removes chloride to the extent of 0.9800 m ep/gm. of the charcoal. The soluble proteins present in the soak liquor are also removed with 100% efficiency. The B. O.D, C.O.D and colour of the soak liquor Were seen to be reduced reduced after passing throuh the charcoal.

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