B. Srinivasa Reddy, V. Krishna
Abstract
Leaves, stems and their ashes of Annona Squamosa, and Azdirachta Indica have been probed for their sorption abilities towards Methylene Blue using simulated waste waters. The physicochemical parameters such as pH, time of equilibration and sorbent concentrations are optimized for the maximum removal of Methylene Blue. These sorbents are found to be effective at pH 8. Sorbent dosage and time needed for the maximum removal of Methylene Blue are found to be less for the ashes than with the raw powders of the plant materials Methodologies have been developed for the extraction of good quantities of Methylene Blue dye from waste water samples. Fivefold excess of common anions ions, have not interfered the extraction while Cation like Ca2+, Mg2 and Cu2+ have shown some interference but Fe2+ and Zn2+ have synergistically maintained the maximum extraction of the dye. The procedures developed are successfully applied for the samples collected from dyeing industries.