Removal of Zn2+, Cu2+ and Ni2+ ions from aqueous solution via Tripoli: Simple component with single phase model
Tayel El Hasan2, Zaid A. Al-Anber1, Mohammad Al-Anber2*, Mufeed Batarseh3, Farah Al-Nasr4, Anf Ziadat5, Yoshigi Kato3and Anwar Jiries2
1Department of Chemical Engineering, Faculty of Engineering Technology, Al-Balqa Applied University, Amman, P.O Box 15008, Amman 11131 Jordan
2Department of Chemical Science, Faculty of Science, Mutah University, 61710 Al-Karak, P.O Box 7 Jordan
3费萨尔王子Center for Dead Sea, Environmental and Energy Research, Mu’tah University, P.O. Box 3, Karak 61710 Jordan
4Faculty of Agriculture, Mutah University, Al-Karak, P.O Box 7 Jordan
5Faculty of Engineering, Mutah University, Al-Karak, P.O Box 7 Jordan
http://dx.doi.org/10.12944/CWE.3.1.01
The removal of heavy metals (Cu2+, Zn2+and Ni2+) from aqueous model solution has been studied using Tripoli (Microcrypto crystalline silica = MCCS) as adsorbent. The adsorption equilibrium studies are performed with a constant initial metal ion concentrations (namely 10 and 100 mg.L-1) and varying adsorbent weight. The adsorption percentages of Zn2+and Cu2+ions increase sharply by increasing adsorbent doses in the range of 0.5 g to 5 g (approx.) and then it slightly increases in the range of 5 g to 10 g of Tripoli, while the percentage removal of Ni2+increases sharply in the whole range of 0.5 to 10 g of Tripoli. In this level, the maximum adsorption might be attained. The best pH value is at about 7 to achieve the maximum removal, otherwise the precipitation of sorbet and the hydrolysis of sorbent are occurred. The removal percentages at pH = 7 are high (Approx. above 92%), where the diluted Zn2+is characterized as the highest removal efficiency. The obtained experimental data has successfully fitted to the Langmuir and Freundlich isotherm models. The Freundlich constant Kf for Zn2+is greater than the other heavy metals for the initial concentration 100 mg.L-1. The negative value of DG° confirms the feasibility of the process and the spontaneous nature of adsorption with a high preference for metal ions (Zn2+, Cu2+and Ni2+, respectively) to adsorb onto Tripoli
Zinc; Copper; Nickel; Tripoli; Microcrypto Crystalline Silica (MCCS); Isotherm Models
Copy the following to cite this article:
El-Hasan T, Al-Anber Z.A, Al-Anber M, Batarseh M, Al-Nasr F, Zaidat A, Kato Y, Jiries A. Removal of Zn2+, Cu2+ and Ni2+ ions from aqueous solution via Tripoli: Simple component with single phase model. Curr World Environ 2008;3(1):01-14 DOI:http://dx.doi.org/10.12944/CWE.3.1.01
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El-Hasan T, Al-Anber Z.A, Al-Anber M, Batarseh M, Al-Nasr F, Zaidat A, Kato Y, Jiries A. Removal of Zn2+, Cu2+ and Ni2+ ions from aqueous solution via Tripoli: Simple component with single phase model. Curr World Environ 2008;3(1):01-14. Available from://www.a-i-l-s-a.com?p=87/
