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Information × Registration Number 0203U006596, 0100U004526 , R & D reports Title Development of the technology for the preparation of complex-forming adsorbent based on natural kaolinite for removal of non-ferrous metal ionis from industrial halvanic wastewater. popup.stage_title Head Tarasеvich Y.I., Registration Date 19-06-2003 Organization A.V Dumansky Institute of Colloid Chemistry and Water Chemistry popup.description2 The object of the study - complex-forming sorbents based on the kaolinite from Gluchiv deposit (Sspec = 70 m2/g), the kaolinite from Prosiany deposit (Sspec = 15 m2/g) and on the metakaolinite (Sspec = 16 m2/g).The aim of the study is to develop the technology for the preparation of the selective chelate sorbent based on the kaolinite from domestic deposits and polyphosphates; to develop the technology for the cleaning of galvanic industry waste waters from the non-ferrous metal ions using the complex-forming sorbent based on kaolinite.The methods of the study were the photocolorimetry, pH?metry, atom absorption spectroscopy. The technology is developed for the preparation of the chelate sorbent based on the domestic raw materials, which retains its selectivity in a wide pH range (5 to 15). The developed sorbent is shown to be efficient for the extraction of the non-ferrous metal ions from industrial galvanic waste waters, with the cleaning depth increase by 10 or more times (Kp = 104?105 cm3/g) as compared with the value Kp = 103 cm3/g characteristic for ion-exchange resins. The method for the regeneration of complex-forming sorbents is proposed relying on the decrease of the solution pH value to 2, with simultaneous utilisation of non-ferrous metals. The testing of the chelate sorbent was performed using the electrochemical industrial waste waters at the galvanic coverings production site of the "Kyivprylad" plant and Darnitsky tank-repairing plant in Kyiv. Product Description popup.authors popup.nrat_date 2020-04-02 Close