Kinetics and equilibriums for adsorption of poly(vinyl alcohol) from aqueous solution onto natural bentonite

被引：52

作者：

Wang, Weishan ^{[1
]}

Zheng, Baicun ^{[1
]}

Deng, Zuiliang ^{[2
]}

Feng, Zhongjun ^{[2
]}

Fu, Lefeng ^{[2
]}

机构：

[1] E China Univ Sci & Technol, Res & Dev Ctr Sports Mat, Shanghai 200237, Peoples R China

[2] Shanghai Sunrise Polymer Co Ltd, Shanghai 200232, Peoples R China

来源：

CHEMICAL ENGINEERING JOURNAL | 2013年 / 214卷

关键词：

PVA; Bentonite; Adsorption; kinetics; Isotherm; Zeta potential; WATER-PURIFICATION; WASTE-WATER; MONTMORILLONITE; REMOVAL; CLAY; DYE; POLYMERS; STABILIZATION; SUSPENSIONS; SURFACTANT;

D O I：

10.1016/j.cej.2012.10.070

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Kinetics and isotherms for the adsorption of poly(vinyl alcohol) (PVA) from aqueous solution onto natural bentonite were investigated systematically with respect to initial concentration, contact time and temperature. The kinetics of the adsorption process were discussed using three kinetic models, viz., pseudo-first-order, pseudo-second-order, and intraparticle diffusion kinetic model. The experimental data fitted well with pseudo-second-order kinetic model. The adsorption isotherms were also described by Langmuir, Freundlich and Dubinin-Radushkevich (D-R) isotherm model, respectively. It was found that the isotherms obeyed Langmuir model. FTIR results indicated the presence of PVA on the surface of bentonite/PVA complexes. XRD measurements showed that PVA molecules intercalated into the inter-layers of bentonite. Zeta potential of bentonite particles decreased with increasing PVA concentration. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：343 / 354

页数：12

共 41 条

[1] Characterization and adsorption properties of tetrabutylammonium montmorillonite (TBAM) clay:: Thermodynamic and kinetic calculations [J].

Akçay, M .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2006, 296 (01) :16-21

[2] Effect of pH on rheological properties of purified sodium bentonite suspensions [J].

Benna, M ;

Kbir-Ariguib, N ;

Magnin, A ;

Bergaya, F .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1999, 218 (02) :442-455

[3]

Bergaya F, 2006, DEV CLAY SCI, V1, P1

[4] THE ADSORPTION OF WATER-SOLUBLE POLYMERS ON MICA, TALC LIMESTONE, AND VARIOUS CLAY-MINERALS [J].

CHANG, SH ;

RYAN, ME ;

GUPTA, RK ;

SWIATKIEWICZ, B .

COLLOIDS AND SURFACES, 1991, 59 :59-70

[5] Adsorption/desorption of polyvinyl alcohol on solid substrates and relevant biodegradation [J].

Chiellini, E ;

Corti, A ;

Politi, B ;

Solaro, R .

JOURNAL OF POLYMERS AND THE ENVIRONMENT, 2000, 8 (02) :67-79

[6] Removal of CI Basic Green 4 (Malachite Green) from aqueous solutions by adsorption using cyclodextrin-based adsorbent: Kinetic and equilibrium studies [J].

Crini, Gregorio ;

Peindy, Harmel Ndongo ;

Gimbert, Frederic ;

Robert, Capucine .

SEPARATION AND PURIFICATION TECHNOLOGY, 2007, 53 (01) :97-110

[7] Water Stability of Microporous Coordination Polymers and the Adsorption of Pharmaceuticals from Water [J].

Cychosz, Katie A. ;

Matzger, Adam J. .

LANGMUIR, 2010, 26 (22) :17198-17202

[8] A study of the factors affecting the removal of humic acid by activated carbon prepared from biomass material [J].

Daifullah, AAM ;

Girgis, BS ;

Gad, HMH .

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2004, 235 (1-3) :1-10

[9] Adsorption of poly(vinyl alcohol) on montmorillonite [J].

De Bussetti, SG ;

Ferreiro, EA .

CLAYS AND CLAY MINERALS, 2004, 52 (03) :334-340

[10] Adsorption of Myrj 45 on copper phthalocyanine pigment nanoparticles and effect on their dispersion stability in aqueous solution [J].

Dong, Jiannan ;

Corti, David S. ;

Franses, Elias I. ;

Zhao, Yan ;

Ng, Hou T. ;

Hanson, Eric .

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2011, 390 (1-3) :74-85

← 1 2 3 4 5 →