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Thermodynamics and Kinetics study of Lead Ions Adsorption on Iraqi Bentonite | ||
| Tikrit Journal of Pure Science | ||
| Article 1, Volume 11, Issue 2, 2006, Pages 150-153 | ||
| Authors | ||
| Khulood A. S. AL; | ||
| Abstract | ||
| Evaluation of adsorption parameters of Iraqi bentonite for lead ions (Pb2+) was investigated in a temperature range (10 – 50 oC) and pH values range (2-10). The method was based on the calculation of Langmuir adsorption maximum (b), and the bonding energy term (KL). The parameters were the outcome of well – established linear relationships of Ce/Q versus Ce (Ce, equilibrium concentration and Q, amount of lead adsorbed). The Q values increased with temperature and pH increasing. Kinetics study was conducted by using Lagergreen equation and a first order equation was obtained at time ranging from 5 mints to equilibrium time, and the rate constant of adsorption was calculated. The study included the adsorption of lead ions attached to EDTA as a complex (Pb – EDTA) on bentonite. | ||
| Keywords | ||
| Lead ion; adsorption; Bentonite | ||
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