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Highly Efficient Uptake of TcO4– by Imidazolium-Functionalized Wood Sawdust
ACS Omega ( IF 3.7 ) Pub Date : 2021-09-23 , DOI: 10.1021/acsomega.1c03784 Fangfei Dong 1 , Xiaomin Li 1 , Yiwei Huang 1 , Xupeng Zhi 1 , Suliang Yang 2 , Yinglin Shen 1
ACS Omega ( IF 3.7 ) Pub Date : 2021-09-23 , DOI: 10.1021/acsomega.1c03784 Fangfei Dong 1 , Xiaomin Li 1 , Yiwei Huang 1 , Xupeng Zhi 1 , Suliang Yang 2 , Yinglin Shen 1
Affiliation
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99Tc is a radioactive fission product, mainly in the form of TcO4–, with good solubility and mobility in the environment. The development of effective and inexpensive materials to remove TcO4– from nuclear industry wastewater or contaminated water is significant. Wood sawdust is a byproduct of the wood processing industry and is an abundant, low-cost, and sustainable material. The mesostructure of wood consists of numerous hollow cells that are joined endwise to form an interconnected channel matrix capable of rapid transfer of ions. Imidazolium-functionalized wood sawdust (IM-WS) was synthesized using natural wood sawdust by a two-step reaction. It has excellent properties of TcO4–/ReO4– adsorption including rapid adsorption dynamics (30 s to equilibrium), good adsorption stability (pH 3–9), high selectivity (adsorption of 45.4 Re % in 1000 times excess of NO3– ions, 76.6 Re % in 6000 times excess of SO42– ions, and 92.2 Tc % in a simulated mixed solution; after adsorption, the concentration of TcO4– decreased to 0.056 ppb from the initial concentration of 12.09 ppb in 1000 times excess of SO42−), and in particular low production costs. These characteristics give it great prospects for low-level radioactive wastewater treatment and environmental remediation.
中文翻译：
咪唑鎓功能化木锯末高效吸收 TcO4
99 Tc是一种放射性裂变产物，主要以TcO 4 –形式存在，在环境中具有良好的溶解性和迁移性。开发有效且廉价的材料来去除核工业废水或污染水中的 TcO 4 –具有重要意义。木锯末是木材加工业的副产品，是一种丰富、低成本且可持续的材料。木材的介观结构由许多中空细胞组成，这些中空细胞纵向连接形成互连的通道矩阵，能够快速传输离子。以天然木锯末为原料，通过两步反应合成咪唑功能化木锯末（IM-WS）。它具有优异的 TcO 4 – /ReO 4 –吸附性能，包括快速吸附动力学（30 s 达到平衡）、良好的吸附稳定性（pH 3–9）、高选择性（在 1000 倍过量的 NO 3 –中吸附 45.4 Re %）离子，6000倍过量的SO 4 2–离子中Re为76.6%，模拟混合溶液中92.2Tc%；吸附后，TcO 4 –浓度从初始浓度12.09 ppb下降到1000倍过量的0.056 ppb SO 4 2− )，特别是生产成本低。这些特点使其在低放射性废水处理和环境修复方面具有广阔的前景。
更新日期：2021-10-06
中文翻译：
咪唑鎓功能化木锯末高效吸收 TcO4
99 Tc是一种放射性裂变产物，主要以TcO 4 –形式存在，在环境中具有良好的溶解性和迁移性。开发有效且廉价的材料来去除核工业废水或污染水中的 TcO 4 –具有重要意义。木锯末是木材加工业的副产品，是一种丰富、低成本且可持续的材料。木材的介观结构由许多中空细胞组成，这些中空细胞纵向连接形成互连的通道矩阵，能够快速传输离子。以天然木锯末为原料，通过两步反应合成咪唑功能化木锯末（IM-WS）。它具有优异的 TcO 4 – /ReO 4 –吸附性能，包括快速吸附动力学（30 s 达到平衡）、良好的吸附稳定性（pH 3–9）、高选择性（在 1000 倍过量的 NO 3 –中吸附 45.4 Re %）离子，6000倍过量的SO 4 2–离子中Re为76.6%，模拟混合溶液中92.2Tc%；吸附后，TcO 4 –浓度从初始浓度12.09 ppb下降到1000倍过量的0.056 ppb SO 4 2− )，特别是生产成本低。这些特点使其在低放射性废水处理和环境修复方面具有广阔的前景。
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