Study on the adsorption properties of iodine by nitrogen-rich polycatecholamines and sodium lignosulfonate-modified polycatecholamines

IF 5.5 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers Pub Date : 2025-06-06 DOI:10.1016/j.jtice.2025.106212

Chenkun Yu , Ze Liang , Ruoyao Zhou , Tingting Gao , Fangzhi Zhang , Congde Qiao , Jinshui Yao , Qinze Liu

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Abstract

Background

Nuclear energy as a kind of clean energy has been vigorously developed. The possibility of nuclear leakage may discharge harmful substances, among which radioactive iodine is one of them. The iodine may be discharged into the environment in the form of vapor and solution, and the effective removal of them has obviously become an important and arduous task.

Methods

In this paper, two nitrogen-rich polymers, PY-PEI (poly(polyethyleneimine-pyrogallic)) and LS-PY-PEI (poly(Sodium lignosulfonate-polyethyleneimine-pyrogallic)) were successfully synthesized for iodine adsorption. 3) 3) Significant Findings: The experimental data showed that the capacities of the two for iodine capture in vapor were 3.57 g g^-1 (PY-PEI) and 3.25 g g^-1 (LS-PY-PEI), 1054 mg g^-1 (PY-PEI) and 1035 mg g^-1(LS-PY-PEI) in iodine n-hexane organic solvent. Besides, both of them possessed rapid adsorption. Therefore, two efficient iodine adsorbent materials were successfully synthesized by designing nitrogen-rich sites and electron-rich groups in the molecules.

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富氮多儿茶酚胺和木质素磺酸钠改性多儿茶酚胺对碘的吸附性能研究

核能作为一种清洁能源得到了大力发展。核泄漏可能会排放有害物质，放射性碘就是其中一种。碘可能以蒸汽和溶液的形式排放到环境中，有效地去除它们显然已成为一项重要而艰巨的任务。方法成功合成了两种富氮聚合物：聚聚聚乙烯亚胺-焦性没食子（PY-PEI）和聚木质素磺酸钠-聚聚聚乙烯亚胺-焦性没食子（LS-PY-PEI）。3) 3)显著发现：实验数据表明，两者在碘正己烷有机溶剂中对碘的捕集量分别为3.57 g g-1（PY-PEI）和3.25 g g-1(LS-PY-PEI)，分别为1054 mg g-1（PY-PEI）和1035 mg g-1（LS-PY-PEI）。此外，它们都具有快速的吸附作用。因此，通过在分子中设计富氮位点和富电子基团，成功合成了两种高效的碘吸附材料。

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来源期刊

Journal of the Taiwan Institute of Chemical Engineers 工程技术-工程：化工

CiteScore

9.10

自引率

14.00%

发文量

362

审稿时长

35 days

期刊介绍： Journal of the Taiwan Institute of Chemical Engineers (formerly known as Journal of the Chinese Institute of Chemical Engineers) publishes original works, from fundamental principles to practical applications, in the broad field of chemical engineering with special focus on three aspects: Chemical and Biomolecular Science and Technology, Energy and Environmental Science and Technology, and Materials Science and Technology. Authors should choose for their manuscript an appropriate aspect section and a few related classifications when submitting to the journal online.