Macroporous glycidyl dimethacrylate and ethylene glycol dimethacrylate
copolymer functionalized with diethylene triamine, PGME-deta, was tested as
adsorbent for removal of Acid Orange 10 (AO10) and Reactive Black 5 (RB5)
from aqueous solutions. Diffusion-based kinetic models (intraparticle diffusion,
Bangham and Boyd model) were used for interpretation of experimental data.Physical chemistry 2012 : 11th international conference on fundamental and applied aspects of physical chemistry; Belgrade (Serbia); 24-28 September 201

Ekmeščić, Bojana

Jović-Jovičić, N.

Maksin, Danijela D.

Nastasović, Aleksandra B.

Onjia, Antonije E.

Popović, A.

Sandić, Zvijezdana

Repository of the Vinča Nuclear Institute (VinaR)

        Pon HYSICAL11th InterFundamentPhyUnder UnivePThe ConfProfesSeptemBe CHEMISnational Coal and Appsical Chem the auspicersity of Beroceeding      erence is desor  Ivan Dr        ber 24-28lgrade, Ser  TRY 2012nference lied Aspectistry s of the lgrade s dicated to aganić , 2012  bia   s of       ISBN 978-86-82475-27-9 Volume 1 ISBN 978-86-82475-28-6 Volume II  Title: PHYSICAL CHEMISTRY 2012 (Proceedings) Editors: S. Anić and Ž. Čupić Published by: Society of Physical Chemists of Serbia, Studenski trg 12-16, 11158, Belgrade, Serbia Publisher: Society of Physical Chemists of Serbia For Publisher: S. Anić, President of Society of Physical Chemists of Serbia Printed by: “Jovan” Priting and Publishing Company; 200 Copies; Number of pages: 6+ 497; Format: B5; Printing finished in September 2012.  Text and Layout: “Jovan”  200- Coppy printing  III CONTENTS  Volume 1 Organizers V Committees VI Sponsors VIII Professor Ivan Draganić IX Plenary lectures 1 Chemical Thermodynamics 35 Spectroscopy, Molecular Structure,  Physical Chemistry of Plasma 65 Kinetics, Catalysis  137 Nonlinear Dynamics  225 Electrochemistry  301 Biophysical Chemistry, Photochemistry,  Radiation Chemistry  337 Radiochemistry, Nuclear Chemistry  Material Science 415  Volume II Solid State Physical Chemistry 505 Macromolecular Physical Chemistry  515 Environmental Protection  Forensic Sciences Pharmaceutical Physical Chemistry 557 Phase Boundaries 667 Complex Compounds 681 General Physical Chemistry 707 Geophysical Chemistry 719 Education, History 731 Food Physical Chemistry 743 Free Topic 783 Index 791  C-19-P 209 DIFFUSION-BASED KINETIC MODELING OF TEXTILE DYE ADSORPTION BY POROUS COPOLYMER  Z. Sandić1, D. Maksin2, N. Jović-Jovičić3, B. Ekmeščić3, A. Nastasović3, A. Onjia2, A. Popović4  1University of Banja Luka, Faculty of Science, 78000 Banja Luka, Mladena Stojanovića 2, Bosnia and Herzegovina 2University of Belgrade, Vinča Institute of Nuclear Sciences, P.O. Box 522, 11001 Belgrade, Republic of Serbia 3University of Belgrade, ICTM, Njegoševa 12, 11000 Belgrade, Republic of Serbia 4Faculty of Chemistry, University of Belgrade, Studentski trg 12-16,  11000 Belgrade, Republic of Serbia  Abstract Macroporous glycidyl dimethacrylate and ethylene glycol dimethacrylate copolymer functionalized with diethylene triamine, PGME-deta, was tested as adsorbent for removal of Acid Orange 10 (AO10) and Reactive Black 5 (RB5) from aqueous solutions. Diffusion-based kinetic models (intraparticle diffusion, Bangham and Boyd model) were used for interpretation of experimental data.  Introduction The removal of synthetic dyes from the industrial effluents becomes a critical issue. Over 7 x 105 t of nearly 100,000 commercially available dyes are produced annually worldwide while 2% of dyes are discharged directly into the environment [1]. Among the most attractive polymeric adsorbents for textile dyes removal from aqueous media are amino-functionalized glycidyl methacrylate (GMA) copolymers [2]. In this paper, kinetic data of textile dyes adsorption onto PGME-deta were interpreted with intraparticle diffusion, Bangham and Boyd model.  Experimental PGME-deta (surface area 53 m2g-1, pore diameter 50 nm, particle size 150-500 μm, amino groups concentration 5.01 mmolg-1) was obtained as described elsewhere [2]. AO10 [CAS: 1936-15-8], and RB5 [CAS: 17095-24-8] were purchased from Alfa-Aesar and used as received. The experiments were carried out at 25 °C, with the initial dye concentration of 30; 50 and 70 mg L-1, madsorb of 25.0 mg and V=50.0 mL, at unadjusted pH values of 5.1 for RB5 and 7.4 for AO10. The solution aliquots were withdrawn and the absorbance of supernatant solution was measured using Thermo Electron Nicolet Evolution 500 UV-VIS spectrophotometer (absorption peaks of AO10 and RB5 were at 478 and 597 nm, respectively).  Results And Discussion The prediction of the rate-limiting step in the adsorption process is essential for understanding the adsorption mechanism. Our previous studies showed that the adsorption of AO10 and RB5 by PGME-deta obeyed the pseudo-second-order kinetic model, suggesting that the adsorption rate is controlled by both adsorbent C-19-P 210 capacity and adsorbate concentration. For further analysis and the assessment of the influence of diffusion on adsorption, kinetic data were analyzed using diffusion-based models given in Table 1.  Table 1. Kinetic models. Kinetic model  Equation Reference Intraparticle diffusion 5.0tkCQ ididt ⋅+= [3]  Bangham tVCkQCCC sbtsii log303.2logloglog α+⎥⎦⎤⎢⎣⎡=⎥⎦⎤⎢⎣⎡−[4] Boyd )1ln(4977.0 FBt −−−= [5]  Where: Qt is the amount of adsorbate at time t (mg g-1), Cid- intercept proportional to the boundary layer thickness (mg g-1), kid -intraparticle diffusion rate constant (mg g-1 min-0.5), t-time (min), Ci-initial adsorbate concentration in solution (mg L-1), Cs -weight of adsorbent per L of solution (g L-1), V-solution volume (mL), α (< 1) and kb are constants of the systems, Bt - time constant (min–1), F - fractional attainment of equilibrium at t (min).   a)  b)  c)  d)  Figure 1. Intraparticle diffusion plots for RB5 (a) and AO10 (b); Boyd plots for RB5 (c) and AO10 (d) using PGME-deta as sorbent.  The intraparticle diffusion model plots did not pass through the origin suggesting that even though the adsorption process involved intraparticle diffusion, it was not the only rate-controlling step. Also, the positive (RB5) and negative (AO10) value of intercept Cid  is indicative of some degree of boundary layer control. Bangham’s C-19-P 211 parameters also confirmed that these sorption processes were at least partly pore diffusion controlled. In a Boyd plot, if a straight line passes through the origin, it indicates that particle-diffusion mechanisms govern sorption processes. If not, they are controlled by film-diffusion. It is evident from the presented data, that under the same conditions, the contribution of intraparticle diffusion in sorption of RB5 in comparison with AO10 on PGME-deta is more notable. Eventhough the Boyd plots for RB5 do not pass through origin, they are approching straight-line dependance, while for AO10 these plots were neither linear nor passed through the origin, indicating the film diffusion-controlled mechanism is dominant in overall adsorption regardless of initial concentration.  Table 2. Kinetic parameters for A10 and RB5 using PGME-deta as adsorbent (pH=unadjusted, t=25 °C).  RB5 AO10 Ci, mg L-1 30 50 70 30 50 70 Qe, mg g-1 60.00 96.2 133.7 57.5 93.74 116.5 Intraparticle       kid, mg g-1 min-0.5 4.99 9.08 9.18 5.57 6.99 8.11 Cid, mg g-1 14.4 10.3 29.2 -2.14 -11.4 -21.2 R2 0.982 0.988 0.978 0.957 0.962 0.974 Bangham       kb·103,g-1 16.3 8.63 10.2 3.99 2.4 0.68 α 0.61 0.72 0.65 0.84 0.79 0.95 R2 0.991 0.998 0.997 0.952 0.932 0.977     Conclusion Kinetic data of textile dyes adsorption onto PGME-deta were interpreted with three diffusion-based models: intraparticle diffusion, Bangham and Boyd model. The results suggest that involved intraparticle and film diffusion both play important part in the adsorption process, besides the previously established influence of adsorbent capacity and adsorbate concentration.  Acknowledgements This work was supported by the Ministry of Education and Science of the Republic of Serbia (Projects III 43009 and III 45001).  References [1]  K. Z. Elwakeel, M. Rekaby, J. Hazard. Mater., 2011, 188, 10-18. [2]  Z. P. Sandić, A. B. Nastasović,  N. P. Jović-Jovičić, A. D. Milutinović-Nikolić, D. M. Jovanović, J. Appl. Polym. Sci., 2011, 121, 234-242. [3]  G. E. Boyd,  A. M. Adamson, L. S. Myers, J. Am. Chem. Soc., 1947, 69, 2836-2848. [4]  N.Y. Mezenner, A. Bensmaili, Chem. Eng. J. 2009, 147,  87–96. [5]  Y. Qu, C. Zhang, F. Li, X. Bo, G. Liu, Q. Zhou, J. Hazard. Mater., 2009, 169, 146–152. CIP Volume I  CIP - Каталогизација у публикацији Народна библиотека Србије, Београд  544(082) 621.35(082) 66.017/.018(082)  MEĐUNARODNA konferencija iz fundamentalne i  primenjene fizičke hemije (11 ; 2012 ;        Beograd)    Physical Chemistry 2012 : proceedings.     #Vol. #1 / 11th International Conference on   Fundamental and Applied Aspects of Physical   Chemistry, September 24-28, 2012, Belgrade ;  [editors S.[Slobodan] Anić and Ž.[Željko]     Čupić ; organized by Society of Physical      Chemists of Serbia ... et al.]. - Belgrade :  Society of Physical Chemists of Serbia, 2012  (Belgrade : Jovan). - VI, 498 str. : ilustr.  ; 24 cm  "The Conference is dedicated to Professor     Ivan Draganić" --> nasl. str. - Tiraž 200. - Bibliografija uz svaki rad.  ISBN 978-86-82475-27-9 1. Društvo fizikohemičara Srbije (Beograd) a) Физичка хемија - Зборници b)             Електрохемијско инжењерство - Зборници c)  Наука о материјалима - Зборници COBISS.SR-ID 193432332            CIP Volime II  CIP - Каталогизација у публикацији Народна библиотека Србије, Београд  544(082) 621.35(082) 66.017/.018(082)  MEĐUNARODNA konferencija iz fundamentalne i  primenjene fizičke hemije (11 ; 2012 ;        Beograd)    Physical Chemistry 2012 : proceedings.     #Vol. #2 / 11th International Conference on   Fundamental and Applied Aspects of Physical   Chemistry, September 24-28, 2012, Belgrade ;  [editors S.[Slobodan] Anić and Ž.[Željko]     Čupić ; organized by Society of Physical      Chemists of Serbia ... et al.]. - Belgrade :  Society of Physical Chemists of Serbia, 2012  (Belgrade : Jovan). - VI str., 499-782 str. : ilustr. ; 24 cm  "The Conference is dedicated to Professor     Ivan Draganić" --> nasl. str. - Tiraž 200. - Bibliografija uz svaki rad. - Registar.  ISBN 978-86-82475-28-6 1. Društvo fizikohemičara Srbije (Beograd) a) Физичка хемија - Зборници b)             Електрохемијско инжењерство - Зборници c)  Наука о материјалима - Зборници COBISS.SR-ID 193433356 

Diffusion-based kinetic modeling of textile dye adsorption by porous copolymer

Macroporous glycidyl dimethacrylate and ethylene glycol dimethacrylate
copolymer functionalized with diethylene triamine, PGME-deta, was tested as
adsorbent for removal of Acid Orange 10 (AO10) and Reactive Black 5 (RB5)
from aqueous solutions. Diffusion-based kinetic models (intraparticle diffusion,
Bangham and Boyd model) were used for interpretation of experimental data

Diffusion-based kinetic modeling of textile dye adsorption by porous copolymer

Abstract

Similar works

Full text

Available Versions

Repository of the Vinča Nuclear Institute (VinaR)

TechnoRep