通过水溶性聚合物增强超滤去除水样中的三价锑和五价锑。
Removal of Antimony(III) and Antimony(V) from water samples through water-soluble polymer-enhanced ultrafiltration.
机构信息
Chemistry Department, Faculty of Science, Ege University, Izmir, Türkiye.
Tire-Kutsan Vocational Training School, Ege University, Izmir, Türkiye.
出版信息
Environ Res. 2022 Dec;215(Pt 2):114324. doi: 10.1016/j.envres.2022.114324. Epub 2022 Sep 12.
Addressing antimony (Sb) contamination, which is caused by the use of Sb compounds in various industries, is crucial. This study aims to compare two different Sb removal mechanisms: ion exchange and chelation. Therefore, two different water-soluble polymers-glycidyl methacrylate-N-methyl-D-glucamine and poly 2-(acryloyloxy)ethyl trimethylammonium chloride-were synthesized and used to remove Sb(III) and Sb(V) using the polymer-enhanced ultrafiltration (PEUF) method. The removal of Sb(III) was pH-dependent and extremely difficult at a pH of 1.2. However, when the pH of the solution was increased to 11, the Sb(III) removal rate increased to 77%. The Sb(III) removal rate was 28% at an Sb(III):polymer mole ratio of 1:5, which increased to 77% at a mole ratio of 1:20. Sb(III) removal was discovered to be unaffected by the low concentrations of Na, K, Ca, and Mg ions in the solution, maintaining a Sb(III) removal rate of 77%. The test parameters showed different characteristics for Sb(V) removal. Increasing the pH of the solution from 1 to 9 correspondingly increased the removal rate from 0% to 45%, but increasing it further to 11 decreased the removal rate to 14%. The removal rate of Sb(V) was 67% at a Sb(V):polymer mole ratio of 1:60. Sb(V) removal was discovered to be unaffected by low concentrations of SO, NO, and PO anions in the solution. However, notably, the Sb(V) removal rate decreased from 67% to 58% in the presence of Cl ions. The results demonstrate that Sb removal via chelation was more effective than by ion exchange, and it remained unaffected by the presence of interfering ions.
解决由于在各种工业中使用锑化合物而导致的锑污染至关重要。本研究旨在比较两种不同的锑去除机制：离子交换和螯合作用。因此，合成了两种不同的水溶性聚合物-甲基丙烯酰氧乙基-N-甲基-D-葡糖胺和 2-（丙烯酰氧基）乙基三甲基氯化铵-聚，并使用聚合物增强超滤（PEUF）方法去除 Sb(III) 和 Sb(V)。Sb(III) 的去除受 pH 值影响，在 pH 值为 1.2 时非常困难。然而，当溶液的 pH 值增加到 11 时，Sb(III) 的去除率增加到 77%。当 Sb(III)：聚合物摩尔比为 1:5 时，Sb(III)的去除率为 28%，当摩尔比为 1:20 时，去除率增加到 77%。在溶液中存在低浓度的 Na、K、Ca 和 Mg 离子的情况下，Sb(III)的去除不受影响，保持 77%的 Sb(III)去除率。测试参数显示 Sb(V)去除的不同特征。将溶液的 pH 值从 1 增加到 9 相应地将去除率从 0%增加到 45%，但进一步增加到 11 时将去除率降低到 14%。当 Sb(V)：聚合物摩尔比为 1:60 时，Sb(V)的去除率为 67%。在溶液中存在低浓度的 SO、NO 和 PO 阴离子的情况下，Sb(V)的去除不受影响。然而，值得注意的是，在存在 Cl 离子的情况下，Sb(V)的去除率从 67%降低到 58%。结果表明，通过螯合作用去除 Sb 比通过离子交换更有效，并且不受干扰离子的存在的影响。
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