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removal of toxicants

Studies on adsorptive removal of toxicants from water

Anuradha Baghel, Beer Singh


The objective of our study was to develop and explore the appropriate adsorbents for the removal of toxicants such as heavy metals, CN¯, E. coli, and chemical warfare agents (nerve agents and sulphur mustard) from water. The presence of toxicants in drinking water causes severe threats for living beings. Therefore, many adsorbents such as activated carbon, impregnated carbon, activated carbon spheres, bentonite loaded fabric strips, ion exchange resins, and molecularly imprinted polymers were studied for the elimination of toxicants dissolved in water. Out of them activated carbon and impregnated carbons are highly porous material and having high surface area in comparison to others while molecularly imprinted polymers show high selectivity towards imprinted ions. Stirring time, adsorbent amount and initial concentration of toxicants also affect their removal from water. Pb(II) adsorption on carbon obeyed first order in starting then followed pseudo second order kinetics. While SM adsorption on carbon from a mixture of methanolic water (1 : 1) was  pseudo first order with 5.04 X 10–3 min-1 rate constant and half life of adsorption reaction was 137.5 minutes. .


Carbon; Adsorptive removal; Toxicants; Resins; Bentonited loaded fabric strips; Molecularly imprinted polymers; Kinetics

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M. Hutton, C. Symon, Sci. Total Environ., The quantities of cadmium, Lead, Mercury and Arsenic entering the U. K. environment from human Activities. 57 (1986) 129-150.

J. O. Nriagu, Environ. Pollut., Silent Epidemic of Environmental Metal Poisoning. 50 (1988) 139-161.

S. J. Banum, Introduction to Organic and

Biological Chemistry. third ed., Macmillan

Publishing Co., New York, NY, 12 (1982) 541.

T. D. Luckey, B. Venugopal, D. Hutcheson, Heavy Metal Toxicity and Harmonology, Academic press, New York, (1975).

S. A. Asheh, Z. Duvnjak, Adv. Environ. Res., Sorption of cadmium and other heavy metals by pine bark. 1 (1997) 194.

P. L. Smedley, D. G. Kinniburg, Appl. Geochem., A review of the source, behaviour and distribution of arsenic in natural waters. 17 (2002) 517-568.

S. Cay, A. Uyanık, A. Ozasık, Sep. Purif. Technol. Single and binary component adsorption of copper(II) and cadmium(II) from aqueous solutions using tea-industry waste, 38 (2004) 273-280.

P. Kaewsam, Q. Yu, Environ. Pollut., Cadmium (II) removal from aqueous solutions by pre-treated biomass of marine alga Padina sp.112 (2001) 209-213.

N. S. Shifrin, B. D. Beck, T. D. Gauthier, S. D. Chapnick, G. Goodman, Regul. Toxicol. Pharmacol. Chemistry, toxicology, and human health risk of cyanide compounds in soils at former manufactured gas plant sites. 23 (1996) 106-116.

The Kirk-Othmer Encyclopedia of Chemical Technology, 4 ed., (5) 795-802.

G. Schrader, Die Entwicklung neuer insektizide auf Grundlage organischer Fluor und phosphorus and Fluorine, Cambridge, University Press, London, (1957).

V. G. Serrano, A. M. Garcia, A. E. Mansilla, C. V. Calahorro, Water Res. adsorption of mercury, cadmium and lead from aqueous solution on heat-treated and sulphurized activated carbon. 32 (1998) 1-4.

M. S. P. M. Sait, G. N. Srinivasan, J. A. M. A. Kader, Bull. Electrochem. Adsorption study of mercury on charcoal. 16 (2000) 140-143.

A. Baghel, B. Singh, P. Pandey, R. K. Dhaked, A. K. Gupta, K. Ganeshan, K. Sekhar. J. Hazard. Mater., Adsorptive removal of water poisons from contaminated water by adsorbents137 (2006) 396-400.

N. Adhoum, L. Monser, Chemical engineering and processing, Removal of cyanide from aqueous solution using impregnated activated carbon. 41 (2002) 17-21.

O. İnel, F. Albayrak, A. Aşkin, Turk. J. Chem., Cu and Pb Adsorption on Some Bentonitic Clays 22 (1998) 243-252.

J. K. Mitchell, Fundamentals of Soil Behaviour, second ed., John Wiley, New York, (1993).

R. Naseem, S. S. Tahir, Water Res., Removal of Pb(II) from Aqueous/Acidic Solutions by Using Bentonite as an Adsorbent. 35 (2001) 3982-3986.

F. Gode, E. Pehlivan. J.Hazard. Mater., Removal of chromium(III) from aqueous solutions using Lewatit S 100: the effect of pH, time, metal concentration and temperature. 136 (2006) 330-337.

F. Gode, E. Pehlivan. J. Hazard. Mater., A comparative study of two chelating ion-exchange resins for the removal of chromium (III) from aqueous solution. 100 (2003) 231-243. lead.

Y. Liu, X. Chang, D. Yang, Y. Guo, S. Meng. Anal. Chim. Acta, Highly selective determination of inorganic mercury(II) after preconcentration with Hg(II)-imprinted diazoaminobenzene–vinylpyridine copolymers. 538 (2005) 85-91.

L. I. Anderson, J. chromatogr. B, A review on the application of imprinted polymers to solid-phase extraction and binding assay. 739 (2000) 163-173.

H. Yavuz, R. Say and A. Denizli, Mat. Sci. Eng., Iron removal from human plasma based on molecular recognition using imprinted beads. 25 (2005) 521-528.

M. Boopathi, M. V. S. Suryanarayana, A. K. Nigam, P. Pandey, K. Ganesan, B. Singh, K. Sekhar, Biosens. Bioelectron., Plastic antibody for the recognition of chemical warfare agent sulphur 21 (2006) 2339-2344.

W. Kuchen, J. Schram, Angew. Chem. Int. Ed. Engl., Metal ion selective exchange resins by matrix imprint with methacrylates. 27 (1998)1695-1697.

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