Adsorption Equilibria of an Insecticide Diazinon onto Natural Clay


  • Mohammad S El-Geundi Chemical Engineering Department, Faculty of Engineering, Omar Al-Mukhtar University
  • Assanousi A. Abufares Chemical Engineering Department, Faculty of Engineering, Omar Al-Mukhtar University,



Natural clay, diazinon, Adsorption isotherm, Adsorption isotherm models


Adsorption isotherm has been investigated for the adsorption of diazinon onto natural clay. The influence of particle size range of natural clay on the adsorption capacity has been studied with three different ranges. The results showed that the adsorption capacity of the natural clay increased from 4.9 mg/g (65.5% removal) to 6.1 mg/g (81.0% removal) for decreasing the particle diameter from 500-710 μm to 250-355 μm. The experimental results have been fitted with the Langmuir, Freundlich and Redlich-Peterson models. It is clear from the results that the Freundlich model fits the experimental data significantly better than the Langmuir and Redlich-Peterson models.


Download data is not yet available.


Alam, J.B. (1996) Risk assessment and management of selected pesticides generally used in Bangladesh, M. Tech. Thesis, Bangladesh University of Engineering and Technology.

Bonne, P.A.C., Beerendonk, E.F., Van der Hoek, J.P. and Hofman, J.A.M.H. (2000) Retention of herbicides and pesticides in relation to aging of RO membranes. Desalination, 132, 189-193. DOI:

Boussahel, R., Bouland, S., Moussaoui, K.M. and Montiel, A. (2000) Removal of pesticide residues in water using the nanofiltration process. Desalination, 132, 205-209. DOI:

Brunauer, S., Emmett, P.H. and Teller, E. (1932) Adsorption of gases in multimolecular layers. J Am Chem Soc, 6, 309-319. DOI:

Devitt, E.C. and Wiesner, M.R. (1998) Dialysis investigations of atrazine-organic matter interactions and the role of a divalent metal, Environ. Sci. Technol, 32, 232-237. DOI:

El-Geundi, M.S. (1990) Adsorption equilibria of basic dyestuffs onto maize cob. Adsorption Sci. Technol., 7, 114-123. DOI:

El-Geundi, M.S. (1991) Color removal from textile effluents by adsorption techniques. Water Res., 25, 271-273. DOI:

El-Geundi, M.S., Ismail, H.M. and Attyia, K.M.E. (1995) Activated clay as an adsorbent for cationic dyestuffs. Adsorption Sci. Technol., 12, 109-115. DOI:

Fritz W., Merk, W. and Schlunder, E.U. (1981) Competitive adsorption of two dissolved organics onto activated carbon-II. Adsorption kinetics in batch reactors. Chem Eng Sci, 36, 731-741. DOI:

Freundlich, H.Z. (1906) Over the adsorption in solution. J. Phys. Chem., 57A, 385-470. DOI:

Giles, C.H., D’Silva. AP. and Easton, I.A. (1974a) A general treatment and classification of the solute adsorption isotherm. I. Theoretical. J. Colloid and Interface Sci., 47, 755-765. DOI:

Giles, C.H., D’Silva, AP. and Easton, I.A. (1974b) A general treatment and classification of the solute adsorption isotherm. II. Experimental interpretation. J Colloid Interface Sci, 47, 766-778. DOI:

Greenberg, R.S., Andrews, T., Kakarla, P. and Watts, R. (2002) Emerging Technologies in Hazardous Waste Management: In-Situ Fenton's Like Oxidation of Volatile Organics. Springer US, 8, 153-165. DOI:

Halder, P., Raha, P., Bhattacharya, P., Choudhurt, A. and Adiyachoudhury, N. (1989) Studies on the residues of DDT and endosulfan occurring in ganga water. Indian J. Environ hlth, 31, 156-161.

Hatfield, J.L., Wesley, C.K., Prueger, J.H. and Pfeiffer, R.L. (1996) Herbicide and nitrate distribution in central Iowa rainfall. J. Environ. Qual., 25, 259-264. DOI:

Kauffmann, C., Shoseyov, O., Shpigel, E., Bayer, E.A., Lamed, R., Shoham, Y. and Mandelbaum, R.T. (2000) Novel methodology for enzymatic removal of atrazine from water by CBD-fusion protein immobilized on cellulose. Environmental science and technology, 34, 1292-1296. DOI:

Langmuir, I. (1916) The constitution and fundamental properties of solids and liquids. Part I. Solids. J. Am. Chem. Soc., 38, 2221-2295. DOI:

Mangat, S.S. and Elefsiniotis, P. (1999) Biodegradation of the herbicide 2,4-dichlorophenoxy-acetic acid (2,4-D) in sequencing batch reactors. Water Research, 33, 861-867. DOI:

Nathalie, K.V.L., Pascale, B. and Peter, G. (1999) γ-irradiation for the removal of atrazine in aqueous solution containing humic substances. Radiation physics and chemistry, 55, 317-322. DOI:

Pandey, K.K., Prasad, G. and Singh, V.N. (1986) Use of wallastonite for the treatment of Cu(II) rich effluents. Water, Air and Soil Pollution, 27, 287-296. DOI:

Rao, V.S. (1996) Contamination of village drinking water ponds with pesticide residue. Indian J Environmental protection, 16, 505-509.

Ruthven, D. M. (1984) Principles of adsorption and adsorption processes. John Willey & sons, 43-45.

Singh, D.B., Rupainwar, D. and Prasad, G. (1992) Studies on the removal of Cr(VI) from wastewater by feldspar. J. Chem. Technol. Biotechnol., 53, 127-131. DOI:

Singh, B.K. and Rawat, N.S. (1994) Comparative sorption equilibrium studies of toxic phenols on fly ash and impregnated fly ash. J. Chem. Technol. Biotechnol., 61, 307-317. DOI:

Subramanyam, B. and Das, A. (2009) Linearized and nonlinearized isotherm models comparative study on adsorption of aqueous phenol solution in soil. Int. J. Environ. Sci. Tech., 6, 633-640. DOI:

Subramanyam, B. and Das, A. (2012) Adsorption isotherm modeling of phenol onto natural soils – Applicability of various isotherm models. Int. J. Environ. Res., 6, 265-276.

Treybal, R.E. (1985) Mass transfer operation. Mc Graw-Hill Book Company; 3rd edition, 565-612.

Weber, J.B., Ward, T.M. and Weed, S.B. (1968) Adsorption and desorption of diquat, paraquat, prometone, and 2,4-D by charcoal and exchange resins. Soil Science Society of America Journal, 32, 197-200. DOI:

Weber T.W. and Chakravorti R.K. (1974) Pore and solid diffusion models for fixed bed adsorbers. AIChE J, 20, 228-238. DOI:




How to Cite

El-Geundi, M. S., & Abufares, . A. A. (2013). Adsorption Equilibria of an Insecticide Diazinon onto Natural Clay . Al-Mukhtar Journal of Sciences, 28(1), 1–15.



Research Articles