Der Pharma Chemica
Journal for Medicinal Chemistry, Pharmaceutical Chemistry, Pharmaceutical Sciences and Computational Chemistry
ISSN: 0975-413X
Abstract
New bio-sorbents in the extraction of chromium (VI) from polluted waters
Author(s): Y. Hanumantha Rao and K. RavindhranathThe adsorption nature of sorbents derived from Anogeissus latifolia and Hardwickia binata have been probed for their affinity towards Chromium (VI) by changing various physicochemical parameters such as pH, time of equilibration and sorbent dosage using simulated waters and by adopting batch methods of extraction. The conditions of extraction have been optimized for the maximum removal of Chromium (VI). The extractions are found to be pH sensitive and % removal increases with decrease of pH and the optimum pH is found to 2. Equilibration time and sorbent dosage are less for sorbents pertaining to the ashes than respective powders of leaves or barks. Co-cations, univalent anions and carbonate are not interfering while Sulphate and Phosphate ions have affected the extraction of Chromium (VI) to certain extent. The methodologies developed in this work have been successfully applied to real industrial and polluted water samples.
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