Jumadilov Talkybek, Utesheva Ainamgul, Grazulevicius Juozas, Imangazy Aldan
Laboratory of Synthesis and Physicochemistry of Polymers, Bekturov Institute of Chemical Sciences, 106 Sh. Ualikhanov Street, Almaty 050010, Kazakhstan.
School of Chemical Engineering, Kazakh-British Technical University, 59 Tole bi Street, Almaty 050000, Kazakhstan.
Polymers (Basel). 2023 Feb 6;15(4):816. doi: 10.3390/polym15040816.
This study investigated the effect of the remote activation of the ion exchangers Amberlite IR120 (H form) and AV-17-8 (OH form) in aqueous media to increase the sorption activity of the interpolymer system "Amberlite IR120H:AV-17-8" (X:Y, molar ratio of ionic groups) towards cerium ions from uranium-containing solutions. The sorption properties of the above-mentioned interpolymer system with molar ratios X:Y of 6:0, 5:1, 4:2, 3:3, 2:4, 1:5, and 0:6 were studied using the methods of conductometry, gravimetry, and inductively coupled plasma-optical emission spectrometry. The presented research revealed the dependence of the sorption activity of the interpolymer system "Amberlite IR120H:AV-17-8" (X:Y) on the acidity of the solution. At pH 2.0, the highest cerium ion sorption degree from the model solution (containing both cerium and uranium ions) by the interpolymer system "Amberlite IR120H:AV-17-8" (4:2) was 56% after 48 h of interaction, whereas the cerium ion sorption degrees by raw Amberlite IR120H (6:0) and raw AV-17-8 (0:6) were 30% and 0%, respectively. The increased sorption ability of the interpolymer system "Amberlite IR120H:AV-17-8" (4:2) might be associated with the achievement of the highest ionization degree by this system remotely activated in an aqueous medium. Moreover, the cerium ion desorption study demonstrated a 60% degree of desorption using 2M nitric acid as a desorbing agent (eluent). The obtained results demonstrate the potential of using the remote interaction effect for the activation of the ion exchangers in aqueous media as an interpolymer system for increased cerium ion sorption from uranium-containing solutions.
本研究考察了在水介质中远程激活离子交换剂Amberlite IR120（H型）和AV - 17 - 8（OH型）对提高互聚物体系“Amberlite IR120H:AV - 17 - 8”（X:Y，离子基团摩尔比）从含铀溶液中吸附铈离子的吸附活性的影响。采用电导法、重量法和电感耦合等离子体发射光谱法研究了上述离子基团摩尔比X:Y为6:0、5:1、4:2、3:3、2:4、1:5和0:6的互聚物体系的吸附性能。所呈现的研究揭示了互聚物体系“Amberlite IR120H:AV - 17 - 8”（X:Y）的吸附活性对溶液酸度的依赖性。在pH 2.0时，互聚物体系“Amberlite IR120H:AV - 17 - 8”（4:2）与模型溶液（含有铈离子和铀离子）相互作用48小时后，对铈离子的最高吸附度为56%，而原始的Amberlite IR120H（6:0）和原始的AV - 17 - 8（0:6）对铈离子的吸附度分别为30%和0%。互聚物体系“Amberlite IR120H:AV - 17 - 8”（4:2）吸附能力的提高可能与该体系在水介质中远程激活后达到的最高电离度有关。此外，铈离子解吸研究表明，使用2M硝酸作为解吸剂（洗脱剂）时解吸度为60%。所得结果证明了利用远程相互作用效应在水介质中激活离子交换剂作为互聚物体系以提高从含铀溶液中吸附铈离子的潜力。
