One-Step Calcination of the Spent Bleaching Earth for the Efficient Removal of Heavy Metal Ions | |
Department | 环境材料与生态化学研究发展中心 |
Tang J(唐洁)1,2; Mu B(牟斌)1; Zheng MS(郑茂松)1; Wang AQ(王爱勤)1; Wang AQ(王爱勤) | |
The second department | 固体润滑国家重点实验室 |
2015 | |
Source Publication | ACS Sustainable Chemistry and Engineering |
ISSN | 2168-0485 |
Volume | 3Issue:6Pages:1125-1135 |
Abstract | Attapulgite/carbon nanocomposites were fabricated via one-step calcination of the spent bleaching earth served as adsorbents for the efficient removal of heavy metal ions (Cu(II), Pb(II) and Cd(II)). The as-prepared nanocomposites were characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, X-ray diffraction, thermogravimetric analysis and Brunauer–Emmett–Teller techniques. The process parameters affecting the adsorption behaviors such as initial pH, calcination temperature, contact time and initial concentration of heavy metal ions were systematically investigated. The results indicated that the attapulgite/carbon nanocomposites derived from the low-cost available carbon precursors exhibited high adsorption capacity within a wide pH range, and the faster equilibrium was achieved at lower concentration. In addition, the adsorbed Cu(II), Pb(II) and Cd(II) can be partially desorbed using 0.1 mol/L HCl as the desorbing agent, rendering the as-prepared adsorbent good readsorption ability, especially for the removal of Cu(II). Using the adsorption of Cd(II) as an example, it has been confirmed that the electrostatic interaction, cation exchange and surface complexation between Cd(II) and functional groups on the attapulgite/carbon nanocomposites were the dominant mechanisms according to the results of the adsorption studies and XPS analysis. Furthermore, this research develops a feasible route for the application of the spent bleaching earth in the wastewater treatment. |
Keyword | Spent Bleaching Earth Attapulgite Carbonization Adsorption Heavy Metal Ions |
Subject Area | 环境材料与生态化学 |
DOI | 10.1021/acssuschemeng.5b00040 |
Funding Organization | "863" Project of the Ministry of Science and Technology, P. R. China (No. 2013AA032003);the National Natural Science Foundation of China (No. 21377135) |
Indexed By | SCI |
If | 4.642 |
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/362003/18478 |
Collection | 环境材料与生态化学研究发展中心 固体润滑国家重点实验室(LSL) |
Corresponding Author | Wang AQ(王爱勤) |
Affiliation | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Ctr Ecomat & Green Chem, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
Recommended Citation GB/T 7714 | Tang J,Mu B,Zheng MS,et al. One-Step Calcination of the Spent Bleaching Earth for the Efficient Removal of Heavy Metal Ions[J]. ACS Sustainable Chemistry and Engineering,2015,3(6):1125-1135. |
APA | Tang J,Mu B,Zheng MS,Wang AQ,&王爱勤.(2015).One-Step Calcination of the Spent Bleaching Earth for the Efficient Removal of Heavy Metal Ions.ACS Sustainable Chemistry and Engineering,3(6),1125-1135. |
MLA | Tang J,et al."One-Step Calcination of the Spent Bleaching Earth for the Efficient Removal of Heavy Metal Ions".ACS Sustainable Chemistry and Engineering 3.6(2015):1125-1135. |
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