改性凹凸棒土吸附剂的制备及对水中Cr(Ⅵ)的吸附机理

doi:10.11896/cldb.19030261

Abstract
Figure/Table
References
Related Citation (2)

Download:

Full Text ( PDF ) (3521KB)
Export: BibTeX | EndNote (RIS)

Abstract Tetraethylenepentamine modified attapulgite (TEPA-ATP) was prepared by grafting tetraethylenepentamine (TEPA) on the surface of attapulgite (ATP) by γ-(2,3-epoxypropylene oxide) propyltrimethoxysilane. The structure and surface properties of synthesized composites were characterized by Fourier-transformed infrared spectroscopy (FRIR), X-ray diffraction (XRD), scanning electron microscope (SEM), thermogravimetric analysis (TGA), Zeta potential (Zeta), X-ray photoelectron spectroscopy (XPS) and elemental analysis, and their adsorption capability for aqueous Cr(Ⅵ) was also conducted. Characterized results indicate that tetraethylenepentamine has been successfully loaded on the surface of attapulgite, and TEPA-ATP exhibits high adsorption capacity for aqueous Cr(Ⅵ). The adsorption isotherm can be fitted by Langmuir model, and the maximum adsorption capacity in tested range for TEPA-ATP was 270.8 mg/g. The adsorption kinetics can be well described by the pseudo-second-order kinetic model. Adsorption amount of Cr(Ⅵ) onto TEPA-ATP decreased with increasing pH. Cl^- has little effect on the adsorption of Cr(Ⅵ) by TEPA-ATP, and PO₄^3- can greatly reduce the Cr(Ⅵ) adsorption on TEPA-ATP. From the adsorption tests and XPS analysis, the adsorption coupled chemical reduction mechanism contributes to the enhanced Cr(Ⅵ) adsorption on TEPA-ATP.

Key words： tetraethylenepentamine modified attapulgite chromium VI adsorbents

Published: 13 May 2020

CLC number:

TQ424

Fund:This work was supported by the National Natural Science Foundation of China (21677092), and the Scientific Research Program Funded by Shaanxi Provincial Education Department (15JK1095).

About author:: Jiahong Wang received his Ph. D. degree in environmental engineering from Nanjing University. He is currently a professor and doctoral supervisor of Shaanxi University of Science and Technology. His research inte-rests are industrial wastewater treatment, and application of environmental functional materials. At present, he is chaired National Nature Science Foundation of China and other research projects.

	Service
	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	WANG Jiahong
	CHEN Yao
	SUN Tongtong

Cite this article:

WANG Jiahong,CHEN Yao,SUN Tongtong. Preparation of Modified Attapulgite Adsorbent and Its Adsorption Mechanism for Aqueous Cr(Ⅵ)[J]. Materials Reports, 2020, 34(11): 11003-11008.

URL:

http://www.mater-rep.com/EN/10.11896/cldb.19030261 OR http://www.mater-rep.com/EN/Y2020/V34/I11/11003

1 Thevenon F, Graham N D, Chiaradia M, et al. Science of the Total Environment, 2011, 412(61), 239.
2 Pen-Mouratov S, Shukurov N, Steinberger Y. Environmental Pollution, 2008, 152(1), 172.
3 Shams K M, Tichy G, Sager M, et al. Water Air & Soil Pollution, 2009, 199(1-4), 123.
4 Zhang J D, Li S. Journal of Occupational & Environmental Medicine, 1997, 39(4), 315.
5 Pugh C T, Palmer T T, Carr P A. Journal of Chemical Health & Safety, 2008, 15(3), 25.
6 Almaguer-Busso G, Velasco-Martínez G, Carreño-Aguilera G, et al. Electrochemistry Communications, 2009, 11(6), 1097.
7 Xu G R, Wang J N, Li C J. Chemical Engineering Journal, 2012, 198-199(2), 310.
8 Pradhan D, Sukla L B, Sawyer M, et al. Journal of Industrial & Engineering Chemistry, 2017, 55, 1.
9 Yanan C, Dong A, Sainan S, et al. Materials, 2018, 11(2), 269.
10 Liu W, Yang L, Xu S, et al. RSC Advances, 2018, 8(27), 15087.
11 Yi Y, Lv J, Liu Y, et al. Journal of Molecular Liquids, 2017, 225, 28.
12 Wu X, Xiong X, Brunetti G, et al. RSC Advances, 2017, 7(85), 53932.
13 Tarasevich Y I, Trifonov M Y, Ostapenko V T, et al. Journal of Water Chemistry & Technology, 2016, 38(6), 327.
14 Franguelli F P, Tannous K, Coppi C C. Chemical Engineering Communications, DOI:10.1080/00986445.2018.1557154.
15 Liu Y, Chen H, Zhang J, et al. Journal of Composite Materials, 2013, 47(8), 969.
16 Xu W B, He P S. Polymer Engineering & Science, 2010, 41(11), 1903.
17 Kaygun A K, Eral M, Erenturk S A. Journal of Radioanalytical & Nuc-lear Chemistry, 2017, 311(2), 1459.
18 Liu W, Yang T, Xu J, et al. Environmental Progress & Sustainable Energy, 2015, 34(2), 437.
19 Xie H L, Huang X X. Journal of Chongqing University of Technology (Natural Science), 2019, 33(4), 88 (in Chinese).
谢焕玲,黄小雪.重庆理工大学学报(自然科学),2019,33(4),88.
20 Mu B, Wang A Q. Journal of Materials Chemistry A, 2015, 3(1), 281.
21 Shi Y, Zhang Q, Feng L, et al. Korean Journal of Chemical Engineering, 2014, 31(5), 821.
22 Peng G W, Ding D X, Xiao F Z, et al. Journal of Radioanalytical & Nuclear Chemistry, 2014, 301(3), 781.
23 Xu Z, Wei L, Xiong Z, et al. Desalination & Water Treatment, 2016, 57(15), 7054.
24 Pan Y, Cai P, Farmahini-Farahani M, et al. Applied Surface Science, 2016, 385, 333.
25 Mansri A, Benabadji K I, Desbrières J, et al. Desalination, 2009, 245(1), 95.
26 Peng W, Xie Z, Cheng G, et al. Journal of Hazardous Materials, 2015, 294, 9.
27 Gupta A, Jain R, Gupta D C. Reactive & Functional Polymers, 2015, 93, 22.
28 Liu Y, Jin X, Chen Z. Science of the Total Environment, 2018, 627, 470.
29 Chen Y, Xu H, Wang S, et al. RSC Advances, 2014, 4(34), 17805.
30 Ghosh A, Basu T, Manna B, et al. Journal of Environmental Chemical Engineering, 2015, 3(1), 565.
31 Wang D, Zhang G, Zhou L, et al. Langmuir, 2017, 33(28), 7007.
32 Xing Y Q, Chen X M, Wang D H. Environmental Science & Technology, 2007, 41(4), 1439.