Sorption and desorption behavior of lead in four different soils of India
ABSTRACT
Sorption and desorption mechanisms of lead (Pb) were determined in four different soils collected from different agro-climatic regions of India. The soils were classified as: fine loamy mixed Typic- Dystrudepts, fine sandy loam Typic Ustochrepts, fine loamy Typic Ustochrept, and fine sandy loam Udic Haplustalfs. Seven different Pb solutions [Pb(NO3)2 dissolved in 0.01M Ca(NO3)2] in a range of 400 to 2000µgL-1 were applied to study the sorption amounts at 25(±2)oC and 45(±2)oC temperatures. With the increase in application rate and tempera-ture, sorption amounts of Pb increased; however, percentages of sorption of applied Pb were decreased. Sorptions were positively and significantly (p≤0.01) correlated with Langmuir adsorption isotherm. Thermodynamic parameters of sorption (i.e. Ko, ?Go, ?Ho, and ?So) were also determined at two tempera-tures, 25(±2)oC and 45(±2)oC. Increase in Ko with the increase in temperature indicated positive effect of temperature on Pb sorption. High absolute values of ?Go, and positive values of ?Ho, and ?So suggested that the sorption reaction was spontaneous and en-dothermic. Sorbed Pb were desorbed in Pb free 0.01M Ca(NO3)2 solutions at 25(±2)oC and 45(±2)oC. Desorption amounts increased with increase in the Pb application rate, but not always with the increase in temperature.
Sorption and desorption mechanisms of lead (Pb) were determined in four different soils collected from different agro-climatic regions of India. The soils were classified as: fine loamy mixed Typic- Dystrudepts, fine sandy loam Typic Ustochrepts, fine loamy Typic Ustochrept, and fine sandy loam Udic Haplustalfs. Seven different Pb solutions [Pb(NO3)2 dissolved in 0.01M Ca(NO3)2] in a range of 400 to 2000µgL-1 were applied to study the sorption amounts at 25(±2)oC and 45(±2)oC temperatures. With the increase in application rate and tempera-ture, sorption amounts of Pb increased; however, percentages of sorption of applied Pb were decreased. Sorptions were positively and significantly (p≤0.01) correlated with Langmuir adsorption isotherm. Thermodynamic parameters of sorption (i.e. Ko, ?Go, ?Ho, and ?So) were also determined at two tempera-tures, 25(±2)oC and 45(±2)oC. Increase in Ko with the increase in temperature indicated positive effect of temperature on Pb sorption. High absolute values of ?Go, and positive values of ?Ho, and ?So suggested that the sorption reaction was spontaneous and en-dothermic. Sorbed Pb were desorbed in Pb free 0.01M Ca(NO3)2 solutions at 25(±2)oC and 45(±2)oC. Desorption amounts increased with increase in the Pb application rate, but not always with the increase in temperature.
Cite this paper
nullDutta, S. and Singh, D. (2011) Sorption and desorption behavior of lead in four different soils of India. Agricultural Sciences, 2, 41-48. doi: 10.4236/as.2011.21007.
nullDutta, S. and Singh, D. (2011) Sorption and desorption behavior of lead in four different soils of India. Agricultural Sciences, 2, 41-48. doi: 10.4236/as.2011.21007.
References
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[1] Adhikari, T. and Singh, M.V. (2003) Sorption characteris-tics of lead and cadmium in some soils of India. Geoderma, 114, 81-92. [2] Mouni, L., Merabet, D., Robert, D. and Bouzaza, A. (2009) Batch studies for the investigation of the sorption of the heavy metals Pb2+ and Zn2+ onto Amizour soil (Algeria). Geoderma, 154, 30-35. [3] Singh, S.P., Ma, L.Q. and Harris, W.G. (2001) Heavy metal interactions with phosphatic clay: Sorption and desorption behavior. Journal of environmental quality, 30, 1961-1968. [4] Strawn, D.G. and Sparks, D.L. (2000) Effect of soil organic matter on the kinetics and mechanisms of Pb (II) sorption and desorption in soil. Soil Science Society of America Journal, 64, 144-156. [5] Aziz, H.M.A. (2005) Sorption equilibria of lead (II) on some Palestinian soils-the natural ion exchangers. Colloids Surfaces A: Physicochemical and Engineering Aspects, 264, 1-5. [6] Jurinak, J.J. and Bauer, N. (1956) Thermodynamics of zinc adsorption on calcite, dolomite and magnesite type miner-als. Proceedings Soil Science Society of America, 20, 466-471. [7] Eick, M.J., Peak, J.D., Brady, P.V. and Pesek, J.D. (1999) Kinetics of lead adsorption/desorption on goethite: resi-dence time effect. Soil Science, 164, 28-39. [8] Sparks, D.L. (2003) Environmental soil chemistry,” 2nd edition, Academic Press, New York. [9] McBride, M.B. (1999) Chemisorption and precipitation reactions,” In: M. E. Summer, Ed., Handbook of soil sci-ence, CRC Press, Boca Raton, Florida. [10] Sparks, D.L. (1989) Kinetics of Soil Chemical Processes. Academic Press, New York. [11] Gajbhiye, K.S. and Mandal, C. (2006) Agro-Ecological Zones, their Soil Resource and Cropping systems. Internet Available: http://www.indiawaterportal.org/sites/indiawaterportal.org/files/01jan00sfm1.pdf. [12] Dutta, S. K., Singh, D. and Sood, A. (2011) Effect of soil chemical and physical properties on sorption and desorp-tion behavior of lead in different soils of India. Soil Sediment Contamination.: An international Journal, 20, 2011.xxx-xxx. Accepted, In press. [13] Tessier, A.P., Campbell, G.C. and Bisson, M. (1979) Sequential extraction procedure for the speciation of par-ticulate trace metals. Analytical Chemistry, 51, 844-51. [14] Lindsay, W.L. and Norvell, W.A. (1978) Development of DTPA soil test for zinc, iron, manganese and copper. Soil Science Society of America Journal, 42, 421-28. [15] Soon, Y.K. (1981) Solubility and sorption of cadmium in soils amended with sewage sludge. Journal of Soil Sci-ence, 32, 85-95. [16] Boekhold, A.E., Temminghof, E.J.M. and Van-der-Zee, S.E.A.T.M. (1993) Influence of electrolyte composition and pH on cadmium adsorption by an acid sandy soil. Journal of Soil Science, 44, 85-96. [17] Martínez-Villegas, N., Flores-Vélez, L.M. and Domínguez, O. (2004) Sorption of lead in soil as a function of pH: a study case in México. Chemosphere, 57, 1537-1542. [18] Singh, B. and Sekhon, G.S. (1977) Adsorption, desorption and solubility relationships of lead and cadmium in some alkaline soils. Journal of Soil Science, 28, 271-75. [19] Shaheen, S. B. (2009) Sorption and lability of cadmium and lead in different soils from Egypt and Greece. Ge-oderma, 153, 61-68. [20] Appel, C. and Ma, L.Q. (2002) Concentration, pH and surface charge effects on cadmium and lead sorption in three tropical soils. Journal of Environmental Quality, 31, 581-589. [21] Dutta, S.K., Srinidhi, H.V., Kanrar, B. and Singh, D. (2007) Effect of pH on sorption and desorption behavior of lead in three different soils of India. Environmental Ecology, 25, 337-340. [22] Giles, C.H., D’Silva, A.P. and Easton, I.A. (1974) A gen-eral treatment and classification of the solute adsorption isotherm. Journal of Colloid Interface Science, 47, 766-78. [23] Welp, G. and Brümmer, G.W. (1999) Adsorption and solubility of ten metals in soil samples of different com-position. Journal of Plant Nutrition and Soil Science, 162, 166-161. [24] Padmanabham, M. (1983) Comparative study of the ad-sorption-desorption behaviour of copper(II), zinc(II), cobalt(II) and lead(II) at the goethite solution interface. Australian Journal of Soil Research, 21, 515-525.