Imangazy Aldan, Jumadilov Talkybek, Khimersen Khuangul, Bayshibekov Arman
Laboratory of Synthesis and Physicochemistry of Polymers, Bekturov Institute of Chemical Sciences, 106 Sh. Ualikhanov Str., Almaty 050010, Kazakhstan.
School of Chemical Engineering, Kazakh-British Technical University, 59 Tole bi Street., Almaty 050000, Kazakhstan.
Polymers (Basel). 2023 Feb 27;15(5):1194. doi: 10.3390/polym15051194.
The escalating demand for rare earth metals (REM) in situations of limited availability has spurred scientists to seek alternative sources of REM, such as industrial waste solutions. This paper investigates the potential for improving the sorption activity of readily available and inexpensive ion exchangers, specifically the interpolymer systems "Lewatit CNP LF and AV-17-8", towards europium and scandium ions, in comparison to the unactivated ion exchangers. The sorption properties of the improved sorbents (interpolymer systems) were evaluated using conductometry, gravimetry, and atomic emission analysis. The results demonstrate that the "Lewatit CNP LF:AV-17-8" (5:1) interpolymer system exhibits a 25% increase in europium ion sorption compared to the raw Lewatit CNP LF (6:0), and a 57% increase in europium ion sorption compared to the raw AV-17-8 (0:6) ion exchanger after 48 h of the sorption process. In contrast, the "Lewatit CNP LF:AV-17-8" (2:4) interpolymer system exhibits a 310% increase in scandium ion sorption compared to the raw Lewatit CNP LF (6:0), and a 240% increase in scandium ion sorption compared to the raw AV-17-8 (0:6) after 48 h of interaction. The improvement in europium and scandium ion sorption levels by the interpolymer systems, compared to the raw ion exchangers, may be attributed to the high ionization degree resulting from the remote interaction effect of the polymer sorbents as the interpolymer system in aqueous media.
在稀土金属（REM）供应有限的情况下，对其需求不断升级，这促使科学家们寻找REM的替代来源，如工业废料解决方案。本文研究了与未活化离子交换剂相比，现有易得且廉价的离子交换剂，特别是互聚物体系“Lewatit CNP LF和AV - 17 - 8”对铕离子和钪离子吸附活性的提升潜力。使用电导测定法、重量分析法和原子发射分析法对改良吸附剂（互聚物体系）的吸附性能进行了评估。结果表明，在吸附过程48小时后，“Lewatit CNP LF:AV - 17 - 8”（5:1）互聚物体系对铕离子的吸附量相较于未处理的Lewatit CNP LF（6:0）增加了25%，相较于未处理的AV - 17 - 8（0:6）离子交换剂增加了57%。相比之下，“Lewatit CNP LF:AV - 17 - 8”（2:4）互聚物体系在相互作用48小时后，对钪离子的吸附量相较于未处理的Lewatit CNP LF（6:0）增加了310%，相较于未处理的AV - 17 - 8（0:6）增加了240%。与未处理的离子交换剂相比，互聚物体系对铕离子和钪离子吸附水平的提高可能归因于聚合物吸附剂在水性介质中作为互聚物体系的远程相互作用效应导致的高电离度。
