Asenic removal from groundwater using granular chitosan-titanium adsorbent
文献类型：期刊论文
| 作者 | Xu, Zuben; Yu, Yaqin; Yan, Li ; Yan, Wei; Jing, Chuanyong
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| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES
 |
| 出版日期 | 2022-02 |
| 卷号 | 112期号:0页码:202-209 |
| 关键词 | ARSENIC ADSORPTION ACTIVATED CARBON TIO2 SURFACE IONS TEMPLATE FLUORIDE PROGRESS |
| ISSN号 | 1001-0742 |
| 英文摘要 | Arsenic (As) contamination poses an urgent environmental risk, and its removal from groundwater remains a challenge due to the lack of efficient adsorbents. Herein, a novel granular chitosan-titanium (CS-Ti) adsorbent was fabricated by the sol-gel method. Batch experiments show that As(V) adsorption on CS-Ti followed the pseudo-second-order kinetic model, and the adsorption isotherm conformed to the Freundlich model with the correlation coefficient of 0.99. In situ FTIR spectra revealed that the CS-Ti adsorbent was composed of amorphous TiOx and chitosan by forming C-O-Ti and N-Ti bonds, and the amorphous TiOx was responsible for As(V) adsorption. Rapid small-scale column tests show that 165.6 mu g/L of As in groundwater were effectively removed in approximately 126-bed volumes, and the spent adsorbents were regenerated with 0.01 mol/L NaOH and maintained the adsorption efficiency after four cycles. This study provides a simple and practical route to fabricate adsorbents for water treatment. (C) 2021 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47472]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 通讯作者 | Jing, Chuanyong |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Shandong Univ, Sch Environm Sci & Engn, Qingdao 266237, Peoples R China 3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Zuben,Yu, Yaqin,Yan, Li,et al. Asenic removal from groundwater using granular chitosan-titanium adsorbent[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2022,112(0):202-209. |
| APA | Xu, Zuben,Yu, Yaqin,Yan, Li,Yan, Wei,&Jing, Chuanyong.(2022).Asenic removal from groundwater using granular chitosan-titanium adsorbent.JOURNAL OF ENVIRONMENTAL SCIENCES,112(0),202-209. |
| MLA | Xu, Zuben,et al."Asenic removal from groundwater using granular chitosan-titanium adsorbent".JOURNAL OF ENVIRONMENTAL SCIENCES 112.0(2022):202-209. |
入库方式： OAI收割
来源：生态环境研究中心
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