Ammonium sulfide-assisted hydrothermal activation of palygorskite for enhanced adsorption of methyl violet | |
Tian GY(田光燕)1,2; Wang WB(王文波)1,3![]() ![]() ![]() | |
刊名 | Journal of Environmental Sciences
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2016 | |
卷号 | 41页码:33-43 |
关键词 | Palygorskite Hydrothermal Adsorption Methyl violet |
ISSN号 | 1001-0742 |
通讯作者 | 田光燕 ; 王爱勤 |
英文摘要 | Herein, palygorskite (PAL) was activated via a simple hydrothermal process in the presence of ammonium sulfide, and the effects of activation on the microstructure, physico-chemical feature and adsorption behaviors of PAL were intensively investigated. The hydrothermal process evidently improved the dispersion of PAL crystal bundles, increased surface negative charges and built more active –Si–O− groups served as the new “adsorption sites”. The adsorption property of the activated PAL for Methyl Violet (MV) was systematically investigated by optimizing the adsorption variables, including pH, ionic strength, contact time and initial MV concentration. The activated PAL exhibited a superior adsorption capability to the raw PAL for the removal of MV (from 156.05 to 218.11 mg/g). The kinetics for MV adsorption followed pseudo second-order kinetic models, while the isotherm and thermodynamics results showed that the adsorption pattern well followed the Langmuir model. The structure analysis of PAL before and after adsorption demonstrated that electrostatic interaction and chemical association of –X–O− are the prominent driving forces for the adsorption process. |
学科主题 | 环境材料与生态化学 |
收录类别 | SCI |
资助信息 | the “863” Project of the Ministry of Science and Technology, People's Republic of China (No. 2013AA032003);the National Natural Science Foundation of China (No. 51403221) |
语种 | 英语 |
WOS记录号 | WOS:000373231400005 |
内容类型 | 期刊论文 |
源URL | [http://210.77.64.217/handle/362003/19426] ![]() |
专题 | 兰州化学物理研究所_环境材料与生态化学研究发展中心 |
作者单位 | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, Ctr Ecomat & Green Chem, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Lanzhou Inst Chem Phys, R&D Ctr Xuyi Palygorskite Appl Technol, Xuyi 211700, Peoples R China |
推荐引用方式 GB/T 7714 | Tian GY,Wang WB,Kang YR,et al. Ammonium sulfide-assisted hydrothermal activation of palygorskite for enhanced adsorption of methyl violet[J]. Journal of Environmental Sciences,2016,41:33-43. |
APA | Tian GY,Wang WB,Kang YR,&Wang AQ.(2016).Ammonium sulfide-assisted hydrothermal activation of palygorskite for enhanced adsorption of methyl violet.Journal of Environmental Sciences,41,33-43. |
MLA | Tian GY,et al."Ammonium sulfide-assisted hydrothermal activation of palygorskite for enhanced adsorption of methyl violet".Journal of Environmental Sciences 41(2016):33-43. |
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