TY - JOUR AU - N. C. Murzakassymova, AU - N. A. Bektenov, AU - M. A. Gavrilenko, PY - 2021/02/01 Y2 - 2024/03/28 TI - MODIFIED SORBENTS AND THEIR APPLICATION FOR EXTRACTION OF METAL IONS JF - Известия НАН РК. Серия химии и технологии JA - SCT VL - IS - 1 SE - Статьи DO - UR - https://journals.nauka-nanrk.kz/chemistry-technology/article/view/333 SP - 75-79 AB - <p>. The data on accumulated mining waste in the territory of Kazakhstan are presented. Their processing<br>has become very important in our time. The structure of surface-modified carbon materials with a grafted layer is<br>given. New modified carbon sorbents were obtained, oleum was used as a modifying agent. It was revealed that the<br>capacitive characteristics of the modified sorbent are significantly higher than that of the original one, which will<br>make it possible to more efficiently extract the metal ion from wastewater and technogenic formations. Sorption is an<br>effective method of extracting valuable components from wastewater and man-made formations. This method allows<br>you to recover valuable substances with a high degree of wastewater treatment, which can be purified to the<br>maximum permissible concentration of pollutants and then used in technological processes or in recycling water<br>supply systems. Processing involves ores characterized by a low content of valuable components, fine dissemination<br>and similar technological properties of minerals. The existing technologies for the development of minerals make it<br>possible to use only a small part of the valuable mineral mass extracted from the subsoil, and the rest forms waste,<br>which, as it accumulates and is stored, becomes one of the most significant factors of anthropogenic changes in the<br>environmen</p> ER -