A Novel Fluoride Removal Adsorbent of a Zr4+-Doped Mg–Al-Layered Double Hydroxide: Synthesis and Fluoride Removal Performance

IF 3.9 3区工程技术 Q2 ENGINEERING, CHEMICAL

Industrial & Engineering Chemistry Research Pub Date : 2025-03-06 DOI:10.1021/acs.iecr.4c0497910.1021/acs.iecr.4c04979

Wei Wang, Xiaoyi Shen*, Yan Liu, Mingyu Han and Yuchun Zhai,

{"title":"A Novel Fluoride Removal Adsorbent of a Zr4+-Doped Mg–Al-Layered Double Hydroxide: Synthesis and Fluoride Removal Performance","authors":"Wei Wang, Xiaoyi Shen*, Yan Liu, Mingyu Han and Yuchun Zhai, ","doi":"10.1021/acs.iecr.4c0497910.1021/acs.iecr.4c04979","DOIUrl":null,"url":null,"abstract":"In this study, a novel fluoride removal adsorbent of the Zr4+-doped Mg–Al-layered double hydroxide (MgAlZr-LDH) was synthesized by a facile hydrothermal method, and the adsorbents before and after adsorption were characterized by SEM, XRD, FTIR, and XPS. The results of the adsorption experiments showed that adsorption reached equilibrium within 10 min. The adsorption kinetics and thermodynamics fitting indicated that the adsorption process followed the pseudo-second-order kinetic model and the Langmuir isotherm model. Its capacity for fluoride could reach up to 51.92 mg·g–1 at room temperature. Additionally, the adsorbent is effective across a wide pH range and exhibits good selectivity for fluoride. Its adsorption capacity still remained above 75% after 5 reusability cycles. Additionally, the defluorination mechanism is proposed, including electrostatic attraction, ion exchange, and ligand exchange. MgAlZr-LDH can be used as an effective adsorbent for removing fluoride from wastewater and has promising application prospects.","PeriodicalId":39,"journal":{"name":"Industrial & Engineering Chemistry Research","volume":"64 11","pages":"5949–5961 5949–5961"},"PeriodicalIF":3.9000,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Industrial & Engineering Chemistry Research","FirstCategoryId":"5","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acs.iecr.4c04979","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}

引用次数: 0

Abstract

In this study, a novel fluoride removal adsorbent of the Zr⁴⁺-doped Mg–Al-layered double hydroxide (MgAlZr-LDH) was synthesized by a facile hydrothermal method, and the adsorbents before and after adsorption were characterized by SEM, XRD, FTIR, and XPS. The results of the adsorption experiments showed that adsorption reached equilibrium within 10 min. The adsorption kinetics and thermodynamics fitting indicated that the adsorption process followed the pseudo-second-order kinetic model and the Langmuir isotherm model. Its capacity for fluoride could reach up to 51.92 mg·g^–1 at room temperature. Additionally, the adsorbent is effective across a wide pH range and exhibits good selectivity for fluoride. Its adsorption capacity still remained above 75% after 5 reusability cycles. Additionally, the defluorination mechanism is proposed, including electrostatic attraction, ion exchange, and ligand exchange. MgAlZr-LDH can be used as an effective adsorbent for removing fluoride from wastewater and has promising application prospects.

Abstract Image

查看原文本刊更多论文

新型Zr4+掺杂mg - al层状双氢氧化物除氟吸附剂的合成及除氟性能

本研究采用水热法合成了一种新型的Zr4+掺杂mg - al层状双氢氧化物（MgAlZr-LDH）除氟吸附剂，并通过SEM、XRD、FTIR和XPS对吸附前后的吸附剂进行了表征。吸附实验结果表明，吸附在10 min内达到平衡。吸附动力学和热力学拟合表明，吸附过程符合拟二级动力学模型和Langmuir等温线模型。在室温下，其氟容量可达51.92 mg·g-1。此外，吸附剂在很宽的pH范围内有效，对氟化物具有良好的选择性。重复使用5次后，其吸附容量仍保持在75%以上。并提出了除氟机理，包括静电吸引、离子交换和配体交换。MgAlZr-LDH可作为一种有效的废水除氟吸附剂，具有广阔的应用前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Industrial & Engineering Chemistry Research 工程技术-工程：化工

CiteScore

7.40

自引率

7.10%

发文量

1467

审稿时长

2.8 months

期刊介绍： ndustrial & Engineering Chemistry, with variations in title and format, has been published since 1909 by the American Chemical Society. Industrial & Engineering Chemistry Research is a weekly publication that reports industrial and academic research in the broad fields of applied chemistry and chemical engineering with special focus on fundamentals, processes, and products.