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Information × Registration Number 0222U001199, 0119U100034 , R & D reports Title Justification and development of technologies of activation of waste of aluminum production for receiving new reagents and materials in water purification processes popup.stage_title Head Mieshkova-Klymenko Nataliia A., Доктор хімічних наук Registration Date 24-01-2022 Organization A.V Dumansky Institute of Colloid Chemistry and Water Chemistry popup.description2 Object of research-red sludge (RS) of Mykolayiv and Zaporizhia alumina productions and products of their activation.The aim of the research is to obtain complex sorbents (CS) and composite coagulants (CC) of different composition by varying the conditions of acid and thermal activation of the RS for purposeful regulation of physicochemical properties of the obtained materials.Research methods - acid and thermal activation processes, X-ray fluorescence and atomic absorption spectrometry, sorption and coagulation processes. The elemental composition of the samples of the RS and the products of its acid and thermal activation was estimated, the technological conditions of activation were determined. New CC with different Fe2O3/Al2O3 ratios were obtained from the liquid activation product. The optimal composition of the CC in a wide range of hydraulic parameters and indicators of water clarification in the treatment of high-turbidity wastewater and natural waters has been determined. Samples of sorbents were obtained from the solid residue of acid activation of RS under different conditions. Sorbents obtained by two-stage activation at a processing temperature 710 0C show increased adsorption properties with respect to phosphate ions and Fe (III) ions. The efficiency of joint extraction of a mixture of aromatic substances and inorganic cations and anions by CS obtained from the products of RS activation and activated carbon (AC) in a ratio of 1: 1 was studied. Samples of AC which are modified by solution after acid activation of RS were obtained. Modification of AC by metal oxides affects the characteristics of AC and increases the sorption of organic matter on modified AC more than (10-30)%. Significant increase in the rate of desorption and the efficiency of abiotic and biotic desorption of nitro and chlorine derivatives of phenol is achieved. Application: water supply and water treatment. Product Description popup.authors Yezlovetska Inna S. Bezpoiasko Viktor O. Vrubel Tetiana L. Gvozdyak Petro I. Hrechanyk Serhii V. Zheldak Oleksandr M. Zabnieva Olha V. Kulishenko Oleksii Yu. Nevynna Liudmyla V. Patiuk Leonid K. Reshetniak Liudmyla Rasulivna Savchyna Liudmyla A. Sapura Olena V. Synelnikova Anna V. Smolin Serhii K. Tytarenko Nadiia Z. Topkin Yurii V. Shvydenko Olha H. popup.nrat_date 2022-03-09 Close