{"title":"大孔弱碱性阴离子交换树脂对水溶液中天然有机物的高效吸附:性能、机理和固定床柱。","authors":"Xingdi Ma, Yangxue Liu, Zhonglin Chen, Yingxu Gong, Binyuan Wang, Jimin Shen, Jing Kang, Pengwei Yan, Shengxin Zhao","doi":"10.1080/10934529.2024.2433361","DOIUrl":null,"url":null,"abstract":"<p><p>In this study, humic acid was used as a model pollutant to investigate the removal effect of a macroporous weakly alkaline anion exchange resin D301 on natural organic matter (NOM) in water. 3D fluorescence spectroscopy, UV - visible spectrophotometry and Fourier transform infrared (FTIR) spectroscopy were employed to analyze changes in the physical and chemical properties of humic acid solution and natural water samples before and after resin adsorption. The results showed that using humic acid as a model pollutant to simulate NOM in water is feasible. Through kinetic and thermodynamic analysis, ion exchange was identified as the dominant mechanism for the adsorption of organic matter by D301 resin. According to the Langmuir adsorption isotherm, the maximum adsorption capacity of the resin was 37.78 mg/g. The adsorption of NOM by the exchange resin effectively conformed to the Thomas, Yoon - Nelson, and BDST models, offering a reliable basis for practical application prediction. Using sodium chloride solution as the regeneration solution for D301 resin column, after several regenerations, the adsorption efficiency of the resin did not change significantly, which indicated that the anion - exchange resin can be used as an efficient and reusable adsorbent for the removal of NOM from water.</p>","PeriodicalId":15671,"journal":{"name":"Journal of Environmental Science and Health Part A-toxic\\/hazardous Substances & Environmental Engineering","volume":" ","pages":"1-13"},"PeriodicalIF":1.9000,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Highly efficient adsorption of natural organic matter from aqueous solutions by macroporous weakly basic anion exchange resin: performance, mechanism, and fixed - bed column.\",\"authors\":\"Xingdi Ma, Yangxue Liu, Zhonglin Chen, Yingxu Gong, Binyuan Wang, Jimin Shen, Jing Kang, Pengwei Yan, Shengxin Zhao\",\"doi\":\"10.1080/10934529.2024.2433361\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>In this study, humic acid was used as a model pollutant to investigate the removal effect of a macroporous weakly alkaline anion exchange resin D301 on natural organic matter (NOM) in water. 3D fluorescence spectroscopy, UV - visible spectrophotometry and Fourier transform infrared (FTIR) spectroscopy were employed to analyze changes in the physical and chemical properties of humic acid solution and natural water samples before and after resin adsorption. The results showed that using humic acid as a model pollutant to simulate NOM in water is feasible. Through kinetic and thermodynamic analysis, ion exchange was identified as the dominant mechanism for the adsorption of organic matter by D301 resin. According to the Langmuir adsorption isotherm, the maximum adsorption capacity of the resin was 37.78 mg/g. The adsorption of NOM by the exchange resin effectively conformed to the Thomas, Yoon - Nelson, and BDST models, offering a reliable basis for practical application prediction. Using sodium chloride solution as the regeneration solution for D301 resin column, after several regenerations, the adsorption efficiency of the resin did not change significantly, which indicated that the anion - exchange resin can be used as an efficient and reusable adsorbent for the removal of NOM from water.</p>\",\"PeriodicalId\":15671,\"journal\":{\"name\":\"Journal of Environmental Science and Health Part A-toxic\\\\/hazardous Substances & Environmental Engineering\",\"volume\":\" \",\"pages\":\"1-13\"},\"PeriodicalIF\":1.9000,\"publicationDate\":\"2024-12-13\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Environmental Science and Health Part A-toxic\\\\/hazardous Substances & Environmental Engineering\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://doi.org/10.1080/10934529.2024.2433361\",\"RegionNum\":4,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"ENGINEERING, ENVIRONMENTAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Environmental Science and Health Part A-toxic\\/hazardous Substances & Environmental Engineering","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.1080/10934529.2024.2433361","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, ENVIRONMENTAL","Score":null,"Total":0}
引用次数: 0
摘要
本研究以腐植酸为模型污染物,研究大孔弱碱性阴离子交换树脂 D301 对水中天然有机物(NOM)的去除效果。采用三维荧光光谱法、紫外可见分光光度法和傅立叶变换红外光谱法分析了腐植酸溶液和天然水样在树脂吸附前后的理化性质变化。结果表明,以腐植酸为模型污染物来模拟水中的 NOM 是可行的。通过动力学和热力学分析,确定离子交换是 D301 树脂吸附有机物的主要机制。根据 Langmuir 吸附等温线,该树脂的最大吸附容量为 37.78 毫克/克。交换树脂对 NOM 的吸附有效地符合 Thomas、Yoon - Nelson 和 BDST 模型,为实际应用预测提供了可靠的依据。以氯化钠溶液作为 D301 树脂柱的再生液,经过多次再生后,树脂的吸附效率没有明显变化,这表明阴离子交换树脂可作为一种高效、可重复使用的吸附剂用于去除水中的 NOM。
Highly efficient adsorption of natural organic matter from aqueous solutions by macroporous weakly basic anion exchange resin: performance, mechanism, and fixed - bed column.
In this study, humic acid was used as a model pollutant to investigate the removal effect of a macroporous weakly alkaline anion exchange resin D301 on natural organic matter (NOM) in water. 3D fluorescence spectroscopy, UV - visible spectrophotometry and Fourier transform infrared (FTIR) spectroscopy were employed to analyze changes in the physical and chemical properties of humic acid solution and natural water samples before and after resin adsorption. The results showed that using humic acid as a model pollutant to simulate NOM in water is feasible. Through kinetic and thermodynamic analysis, ion exchange was identified as the dominant mechanism for the adsorption of organic matter by D301 resin. According to the Langmuir adsorption isotherm, the maximum adsorption capacity of the resin was 37.78 mg/g. The adsorption of NOM by the exchange resin effectively conformed to the Thomas, Yoon - Nelson, and BDST models, offering a reliable basis for practical application prediction. Using sodium chloride solution as the regeneration solution for D301 resin column, after several regenerations, the adsorption efficiency of the resin did not change significantly, which indicated that the anion - exchange resin can be used as an efficient and reusable adsorbent for the removal of NOM from water.
期刊介绍:
14 issues per year
Abstracted/indexed in: BioSciences Information Service of Biological Abstracts (BIOSIS), CAB ABSTRACTS, CEABA, Chemical Abstracts & Chemical Safety NewsBase, Current Contents/Agriculture, Biology, and Environmental Sciences, Elsevier BIOBASE/Current Awareness in Biological Sciences, EMBASE/Excerpta Medica, Engineering Index/COMPENDEX PLUS, Environment Abstracts, Environmental Periodicals Bibliography & INIST-Pascal/CNRS, National Agriculture Library-AGRICOLA, NIOSHTIC & Pollution Abstracts, PubSCIENCE, Reference Update, Research Alert & Science Citation Index Expanded (SCIE), Water Resources Abstracts and Index Medicus/MEDLINE.