The Adsorption Kinetics of Cethyltrimethylammonium Bromide (CTAB) onto Powdered Active Carbon

This study investigates the adsorption kinetics of CTAB (cethyltrimethylammonium bromide), a cationic surfactant, onto PAC from aqueous solution with respect to the initial CTAB concentration at 20∘C. The pseudo-first-order, second-order kinetic models and intraparticle diffusion model were used to describe the kinetic data and the rate constants were calculated. The rate parameter, ki, of intraparticle diffusion, the rate parameter, k2, of the pseudo-second-order and k1, the rate parameter for the pseudo-first-order mechanism were compared. It was found that the pseudo-second-order adsorption mechanism is predominant and the overall rate of the CTAB adsorption process appears to be controlled by more than one step, namely both the external mass transfer and intraparticle diffusion mechanisms.

[1]  S. Allen,et al.  The Adsorption of Pollutants by Peat, Lignite and Activated Chars , 1997 .

[2]  B. Rand,et al.  On the physical adsorption of vapors by microporous carbons , 1995 .

[3]  Gordon McKay,et al.  SORPTION OF DYE FROM AQUEOUS SOLUTION BY PEAT , 1998 .

[4]  Feng-Chin Wu,et al.  Liquid-phase adsorption of dyes and phenols using pinewood-based activated carbons , 2003 .

[5]  M. Sharma,et al.  Adsorption of Cadmium on Bed Sediments of River Hindon: Adsorption Models and Kinetics , 2002 .

[6]  Y. Ho,et al.  Sorption Studies of Acid Dye by Mixed Sorbents , 2001 .

[7]  J. Chen,et al.  Equilibrium and kinetics of metal ion adsorption onto a commercial H-type granular activated carbon: experimental and modeling studies. , 2001, Water research.

[8]  G. Newcombe,et al.  Microcystin-LR adsorption by powdered activated carbon , 1994 .

[9]  Tseng,et al.  Mechanism of Adsorption of Dyes and Phenols from Water Using Activated Carbons Prepared from Plum Kernels. , 2000, Journal of colloid and interface science.

[10]  J. Tsai,et al.  Diffusion of hydrogen sulfide and methyl mercaptan onto microporous alkaline activated carbon. , 2000, Chemosphere.

[11]  M. J. Rosen,et al.  Systematic analysis of surface-active agents , 1972 .

[12]  C. F. Forster,et al.  An examination of the adsorption characteristics of a basic dye (Maxilon Red BL-N) on to live activated sludge system , 2003 .

[13]  L. Rai,et al.  Ni (II) and Cr (VI) sorption kinetics by Microcystis in single and multimetallic system , 2001 .

[14]  Broze,et al.  Adsorption Kinetics of Ionic Surfactants with Detailed Account for the Electrostatic Interactions , 1997, Journal of colloid and interface science.

[15]  Feng-Chin Wu,et al.  Adsorption of dyes and humic acid from water using chitosan-encapsulated activated carbon , 2002 .

[16]  Y. Ho,et al.  Batch nickel removal from aqueous solution by sphagnum moss peat , 1995 .

[17]  G. Walker,et al.  Kinetics of acid dye adsorption on GAC , 1999 .

[18]  A. Rodrigues,et al.  Adsorption of basic dyes on granular activated carbon and natural zeolite. , 2001, Water research.

[19]  K. Kadirvelu,et al.  Orange peel as an adsorbent in the removal of acid violet 17 (acid dye) from aqueous solutions. , 2001, Waste management.

[20]  S. Venkata Mohan,et al.  Adsorptive removal of direct azo dye from aqueous phase onto coal based sorbents: a kinetic and mechanistic study. , 2002, Journal of hazardous materials.

[21]  Linzhang Yang,et al.  The adsorption of basic dyes from aqueous solution on modified peat-resin particle. , 2003, Water research.

[22]  Y. Ho,et al.  SORPTION OF DYES AND COPPER IONS ONTO BIOSORBENTS , 2003 .

[23]  Gordon McKay,et al.  A kinetic study of dye sorption by biosorbent waste product pith , 1999 .

[24]  Xiaoyan Yang,et al.  Application of branched pore diffusion model in the adsorption of reactive dyes on activated carbon , 2001 .

[25]  Feng-Chin Wu,et al.  Kinetic modeling of liquid-phase adsorption of reactive dyes and metal ions on chitosan. , 2001, Water research.

[26]  G. Annadurai,et al.  Adsorption and bio-degradation of phenol by chitosan-immobilized Pseudomonas putida (NICM 2174) , 2000 .

[27]  M S Chiou,et al.  Adsorption behavior of reactive dye in aqueous solution on chemical cross-linked chitosan beads. , 2003, Chemosphere.

[28]  Feng-Chin Wu,et al.  Effect of complexing agents on liquid-phase adsorption and desorption of copper(II) using chitosan , 1999 .

[29]  Y. Ho,et al.  Pseudo-second order model for sorption processes , 1999 .

[30]  E. Guibal,et al.  Cadmium sorption on chitosan sorbents : kinetic and equilibrium studies , 2001 .

[31]  Gordon McKay,et al.  The kinetics of sorption of divalent metal ions onto sphagnum moss peat , 2000 .