Studying the Adsorption Behavior of Copper (II) Ions from Industrial Waste Water Solutions Using Corncob Particles

Subject Areas : journal of New Materials

S. Vafakhah ¹ , M.E. Bahrololoom ² , R. Bazargan Lari ³ , M. Saeedikhani ⁴

1 - دانشجوی کارشناسی ارشد مهندسی مواد، دانشکده مهندسی دانشگاه شیراز، شیراز، ایران.
2 - استاد بخش مهندسی مواد، دانشکده مهندسی دانشگاه شیراز، شیراز، ایران.
3 - استادیار بخش مهندسی مواد، دانشگاه آزاد اسلامی واحد مرودشت، مرودشت، ایران
4 - دانشجوی کارشناسی ارشد مهندسی مواد، دانشکده مهندسی دانشگاه شیراز، شیراز، ایران.

Received: 2013-09-16 Accepted : 2013-09-16 Published : 2013-09-23

Keywords: Natural Corncob, Adsorption, Copper Ions Removal,

Abstract :

The objective of this work was to investigate the effect of initial pH, the adsorbent size and the contact time on the efficiency of adsorption of copper ions from copper sulfate solution with corncob particles. The surface morphology of adsorbent was observed using a scanning electron microscope, both before and after the adsorption. The porous and tubular structure of the corncob indicated the capability of corncob in adsorption of metal ions of the solution. In order to study the equilibrium sorption extent, Langmuir model and Freundlich model were used. The maximum Cu (II) binding capacity, q_max, calculated from Langmuir isotherm model was increased with increasing the initial pH and decreasing the adsorbent size. In addition, the results revealed that contact time is another important factor in sorption, the maximum adsorption occurred at the first 20 minutes and after that the sorption rate decreased and finally it reached a constant value after 2 hours.

References:

1- M. Nasiruddin Khan, and M. Farooq

Wahab, "Characterization of Chemically

Modified Corncobs and Its Application in

the Removal of Metal Ions from Aqueous

Solution.", Hazardous Materials, Vol. 141,

2007. 237-244, 2007.

2- R. Leyva-Ramos, L.A. Bernal-Jacome,

and I. Acosta-Rodriguez, "Adsorption of

Cadmium(II) from Aqueous Solution on

Natural and Oxidized Corncob.",

Separation and Purification Technology,

Vol. 45, pp. 41-49, 2005.

3- A. Demirbas, "Heavy Metal Adsorption

Onto Agro-Based Waste Materials :A

Review.", Hazardous Materials, Vol. 157,

2008. 220-229, 2008.

4- J. Wang, C. Chen, "Biosorbents for

Heavy Metals Removal and Their Future.",

Biotechnology Advances, Vol. 27, pp.

195-226, 2009.

5 -م.ا. بحرالعلوم، ز. صالحی، "مقایسه میزان جذب فلز

مس توسط هیدروکسی اپاتیت تری کلسیم فسفات با

تغییر pH محیط"، ششمین کنگره ملی مهندسی عمران،

سمنان، 1390 .

6- R. Bazargan Lari, M.E. Bahrololoom,

and A. Nemati, "Sorption Behavior of Zn

Ions by Low Cost and Biological Natural

Hydroxyapatite Chitosan Composite from

Industrial Waste Water", Food, Agriculture

and Environment, Vol. 9, pp. 892-899,

2011.

7- M.O. Bagby, N.M. Widstrom, Corn:

Chemistry and Technology, p. 575,

American Association of Cereal Chemists

Inc., St Paul, MN, U.S.A, 1987.

8- A.L. Camre, F.M. Clydesdale, "Effect

of pH and Heat Treatment on the Binding

of Calcium, Magnesium, Zinc, Iron to

Wheat Bran and Fractions of Dietary

Fibers.", Food Science, Vol.46, pp. 548-

551, 1981.

9- M.S. Nasr, D.G. MacDonald, "Colour

Removal from Kraft Mil Caustic

Extraction Effluent Using Aluminum and

Iron", Chemical Engineering, Vol. 56, pp.

87-93, 1978.

10- T. Vaughan, W.S. Chung, W.E.

Marshall, "Removal of Selected Metal Ions

from Aqueous Solution Using Modified

Corncobs", Bioresource Technology, Vol.

78, pp. 131-139, 2001.

11- S. Chen, Q. Yue, B. Gao, Q. Li, X. Xu,

"Removal of Cr(VI) from Aqueous

Solution Using Modified Corn Stalks :

Characteristic, Equilibrium, Kinetic and

Thermodynamic Study.", Chemical

Engineering, Vol. 168, pp. 909-917, 2011.

12- R. Bazargan Lari, "Preparation of

Chitosan from Shrimp Shell and

Adsorption of Heavy Metal Ions from

Aqueos Solutions by Chitosan Hydroxy

Apatite", Ph. D., Thesis Shiraz University,

Shiraz, Iran, 2011.