Nanostructured Fe2O3/Al2O3 Adsorbent for removal of As (V) from water

Advances in environmental science and technology Pub Date : 2017-04-01 DOI:10.22104/AET.2017.2003.1099

F. Akhlaghian, B. Souri, Z. Mohamadi

{"title":"Nanostructured Fe2O3/Al2O3 Adsorbent for removal of As (V) from water","authors":"F. Akhlaghian, B. Souri, Z. Mohamadi","doi":"10.22104/AET.2017.2003.1099","DOIUrl":null,"url":null,"abstract":"The presence of arsenate in drinking water causes adverse health effects including skin lesions, diabetes, cancer, damage to the nervous system, and cardiovascular diseases. Therefore, the removal of As (V) from water is necessary. In this work, nanostructured adsorbent Fe2O3/Al2O3 was synthesized via the sol-gel method and applied to remove arsenate from polluted waters. First, the Fe2O3 load of the adsorbent was optimized. The Fe2O3/Al2O3 adsorbent was characterized by means of XRF, XRD, ASAP, and SEM techniques. The effects of the operating conditions of the batch process of As (V) adsorption such as pH, adsorbent dose, contact time, and initial concentration of As (V) solution were studied, and optimized. The thermodynamic study of the process showed that arsenate adsorption was endothermic. The kinetic model corresponded to the pseudo-second-order model. The Langmuir adsorption isotherm was better fitted to the experimental data. The Fe2O3/Al2O3 adsorbent was immobilized on leca granules and applied for As (V) adsorption. The results showed that the immobilization of Fe2O3/Al2O3 on leca particles improved the As (V) removal efficiency.","PeriodicalId":7295,"journal":{"name":"Advances in environmental science and technology","volume":"82 1","pages":"67-75"},"PeriodicalIF":0.0000,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advances in environmental science and technology","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.22104/AET.2017.2003.1099","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 2

Abstract

The presence of arsenate in drinking water causes adverse health effects including skin lesions, diabetes, cancer, damage to the nervous system, and cardiovascular diseases. Therefore, the removal of As (V) from water is necessary. In this work, nanostructured adsorbent Fe2O3/Al2O3 was synthesized via the sol-gel method and applied to remove arsenate from polluted waters. First, the Fe2O3 load of the adsorbent was optimized. The Fe2O3/Al2O3 adsorbent was characterized by means of XRF, XRD, ASAP, and SEM techniques. The effects of the operating conditions of the batch process of As (V) adsorption such as pH, adsorbent dose, contact time, and initial concentration of As (V) solution were studied, and optimized. The thermodynamic study of the process showed that arsenate adsorption was endothermic. The kinetic model corresponded to the pseudo-second-order model. The Langmuir adsorption isotherm was better fitted to the experimental data. The Fe2O3/Al2O3 adsorbent was immobilized on leca granules and applied for As (V) adsorption. The results showed that the immobilization of Fe2O3/Al2O3 on leca particles improved the As (V) removal efficiency.

查看原文本刊更多论文

纳米结构Fe2O3/Al2O3吸附剂去除水中砷(V)

饮用水中砷酸盐的存在会对健康造成不利影响，包括皮肤损伤、糖尿病、癌症、神经系统损伤和心血管疾病。因此，从水中去除As (V)是必要的。本文采用溶胶-凝胶法制备了Fe2O3/Al2O3纳米吸附剂，并将其应用于污染水体中砷酸盐的去除。首先，对吸附剂的Fe2O3负载进行了优化。采用XRF、XRD、ASAP、SEM等技术对Fe2O3/Al2O3吸附剂进行了表征。考察了pH、吸附剂用量、接触时间、As (V)溶液初始浓度等操作条件对As (V)间歇吸附工艺的影响，并对其进行了优化。热力学研究表明，该过程为吸热吸附。动力学模型符合伪二阶模型。Langmuir吸附等温线与实验数据吻合较好。将Fe2O3/Al2O3吸附剂固定在leca颗粒上，用于吸附As (V)。结果表明，Fe2O3/Al2O3固载在乳油颗粒上提高了As (V)的去除效率。

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

Advances in environmental science and technology

自引率

0.00%

发文量