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SORPTION AND DESORPTION STUDIES OF METALLIC ZINC ON AN ALLUVIAL SOIL
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نویسنده
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Tiwari R. P. ,Bala Ramudu P. ,Srivastava R. K. ,Gupta M. K.
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منبع
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journal of environmental health science and engineering - 2007 - دوره : 4 - شماره : 3 - صفحه:139 -146
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چکیده
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the sorption of metallic zinc from the ph-adjusted aqueous solution at varying initial concentrations ontoa clay soil through batch equilibrium experiments has been studied. the ph of the initial concentrationsranging between 50 mg/l to 250 mg/l has been varied from 3 to 7. the sorption data fitted very well withboth langmuir and freundlich isotherm models and freundlich model gave higher correlationcoefficients. the maximum sorption of metallic zinc occurred at ph=6. the pseudo-second order kineticsmodel was most agreeable with the experimental sorption data, whereas the pseudo-first order model wasfound to be insufficient. a nonionic surfactant was tested for its desorption potential and was found to befairly effective at 2% concentration with removal of more than 60% sorbed zinc.
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کلیدواژه
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Sorption ,isotherms ,desorption ,zinc
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آدرس
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Motilal Nehru National Institute of Technology, Department of Civil Engineering, India, Motilal Nehru National Institute of Technology, Department of Civil Engineering, India, Motilal Nehru National Institute of Technology, Department of Civil Engineering, India, Kamla Nehru Institute of Technology, Department of Civil Engineering, India
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پست الکترونیکی
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rpt_ced@yahoo.co.in
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Authors
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