| A comparative study about adsorption of natural palygorskite for methylene blue | |
| Department | 环境材料与生态化学研究发展中心 |
Zhang Y (张媛)1,2; Wang WB (王文波)1 ; Zhang JP (张俊平)1; Liu P (刘鹏)3; Wang AQ(王爱勤)1; Wang AQ(王爱勤)
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| 2015 | |
| Source Publication | Chemical Engineering Journal
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| ISSN | 1385-8947 |
| Volume | 262Pages:390-398 |
| Abstract | Various methods including acid treatment, heat treatment and surface modification have been used to improve the adsorption properties of natural palygorskite. However, the comparative study about the effect of source of palygorskite on the adsorption properties remains a gap to be filled. Here we first studied the structure and chemical composition of three palygorskite samples from Jiangsu, Anhui and Gansu Provinces of China using scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET), and X-ray Fluorescence Spectrometry (XRF). Subsequently, the adsorption properties of the palygorskites for methylene blue (MB) were evaluated and compared. The palygorskite from Jiangsu (JSHS) is Mg-poor and has an analogous dioctahedral structure. The palygorskite from Anhui (AHGS) is Mg-rich, and has an intermediate structure of dioctahedron and trioctahedron. The palygorskite from Gansu (GSHN) also has an intermediate structure of dioctahedron and trioctahedron, but is associated with muscovite, clinochlore, dolomite and feldspar. The maximum adsorption capacity of the palygorskites from JSHS, GSHN, AHGS for MB at 303 K is 158.03, 98.34, 77.92 mg/g, respectively. It was found that a lower Mg content and the dioctahedral structure of palygorskite are favorable to its adsorption for MB. More negative value of Gibbs free energy (△G0) for JSHS further illustrates that JSHS has higher efficiency in removing the MB molecules than the others. The adsorption mechanism studies suggest that the zeolitic H2O plays a fundamental role in the interaction between MB and palygorskite. |
| Keyword | Palygorskite Methylene Blue Adsorption Capability Adsorption Mechanism |
| Subject Area | 环境材料与生态化学 |
| DOI | 10.1016/j.cej.2014.10.009 |
| Funding Organization | ‘‘863’’ Project of the Ministry of Science and Technology, P. R. China (No. 2013AA032003);the Science and Technology Support Project of Jiangsu Provincial Sci. & Tech. Department (No. BE2012113) |
| Indexed By | SCI |
| If | 5.310 |
| 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/362003/18124 |
| 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 Xuyi Attapulgite Applied Technology, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China 2.University of the Chinese Academy of Sciences, Beijing 100049, PR China 3.College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PR China |
| Recommended Citation GB/T 7714 | Zhang Y ,Wang WB ,Zhang JP ,et al. A comparative study about adsorption of natural palygorskite for methylene blue[J]. Chemical Engineering Journal,2015,262:390-398. |
| APA | Zhang Y ,Wang WB ,Zhang JP ,Liu P ,Wang AQ,&王爱勤.(2015).A comparative study about adsorption of natural palygorskite for methylene blue.Chemical Engineering Journal,262,390-398. |
| MLA | Zhang Y ,et al."A comparative study about adsorption of natural palygorskite for methylene blue".Chemical Engineering Journal 262(2015):390-398. |
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| 2015 张媛CEJ A compara（1932KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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