From illite/smectite clay to mesoporous silicate adsorbent for efficient removal of chlortetracycline from water | |
Department | 环境材料与生态化学研究发展中心 |
Wang WB (王文波)1,3; Tian GY (田光燕)1,2; Zong L (宗莉)1,3; Zhou Yanmin4; Kang YR (康玉茹)1,3; Wang Q (汪琴)1,3; Wang AQ (王爱勤)1,3; Wang AQ(王爱勤) | |
2017 | |
Source Publication | Journal of Environmental Sciences |
ISSN | 1001-0742 |
Volume | 51Pages:31-43 |
Abstract | A series of mesoporous silicate adsorbents with superior adsorption performance for hazardous chlortetracycline (CTC) were sucessfully prepared via a facile one-pot hydrothermal reaction using low-cost illite/smectite (IS) clay, sodium silicate and magnesium sulfate as the starting materials. In this process, IS clay was “teared up” and then “rebuilt” as new porous silicate adsorbent with high specific surface area of 363.52 m2/g (about 8.7 folds higher than that of IS clay) and very negative Zeta potential (− 34.5 mV). The inert Si-O-Si (Mg, Al) bonds in crystal framework of IS were broken to form Si(Al) -O− groups with good adsorption activity, which greatly increased the adsorption sites served for holding much CTC molecules. Systematic evaluation on adsorption properties reveals the optimal silicate adsorbent can adsorb 408.81 mg/g of CTC (only 159.7 mg/g for raw IS clay) and remove 99.3% (only 46.5% for raw IS clay) of CTC from 100 mg/L initial solution (pH 3.51; adsorption temperature 30°C; adsorbent dosage, 3 g/L). The adsorption behaviors of CTC onto the adsorbent follows the Langmuir isotherm model, Temkin equation and pseudo second-order kinetic model. The mesopore adsorption, electrostatic attraction and chemical association mainly contribute to the enhanced adsorption properties. As a whole, the high-efficient silicate adsorbent could be candidates to remove CTC from the wastewater with high amounts of CTC. |
Keyword | Illite/smectite Clay Hybrid Silicate Adsorbent Chlortetracycline Removal |
Subject Area | 环境材料与生态化学 |
DOI | 10.1016/j.jes.2016.09.008 |
Funding Organization | the National Natural Science Foundation of China (Nos. 51403221;21377135);the Jiangsu Provincial Joint Innovation and Research Funding of Enterprises, Colleges and Institutes (No. BY2015056-01);the Huai'an Cooperative Research Project of the Enterprises, Colleges and Institutes (No. HAC2015005);the Youth Innovation Promotion Association CAS (No. 2016370) |
Indexed By | SCI |
If | 2.937 |
Language | 英语 |
Funding Project | 功能复合材料组 |
compositor | 第一作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/21123 |
Collection | 环境材料与生态化学研究发展中心 |
Corresponding Author | Wang AQ(王爱勤) |
Affiliation | 1.Center of Eco-materials and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China 2.University of the Chinese Academy of Sciences, Beijing 100049, China 3.Key Laboratory of Clay Mineral Applied Research of Gansu Province, Lanzhou 730000, China 4.College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China |
Recommended Citation GB/T 7714 | Wang WB ,Tian GY ,Zong L ,et al. From illite/smectite clay to mesoporous silicate adsorbent for efficient removal of chlortetracycline from water[J]. Journal of Environmental Sciences,2017,51:31-43. |
APA | Wang WB .,Tian GY .,Zong L .,Zhou Yanmin.,Kang YR .,...&王爱勤.(2017).From illite/smectite clay to mesoporous silicate adsorbent for efficient removal of chlortetracycline from water.Journal of Environmental Sciences,51,31-43. |
MLA | Wang WB ,et al."From illite/smectite clay to mesoporous silicate adsorbent for efficient removal of chlortetracycline from water".Journal of Environmental Sciences 51(2017):31-43. |
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