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RESPONSE SURFACE METHODOLOGY APPLIED FOR ZINC REMOVAL FROM AQUEOUS SOLUTIONS USING SPHAGNUM PEAT MOSS AS SORBENT

Domenii publicaţii > Chimie + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: Angelica Kicsi*, Corneliu Cojocaru, Matei Macoveanu, Doina Bilba

Editorial: Journal of Environmental Protection and Ecology, Vol. 11, No.2, p.614-622, 2010.

Rezumat:

The efficiency of Zn (II) removal from aqueous solutions was investigated using Sphagnum moss peat as adsorbent. A 23 full factorial central orthogonal design was carried out in order to achieve the best conditions of the sorption of Zn (II) on peat. The combined effect of initial concentration of Zn (II) in aqueous solution (C0, mg/L), peat dose (G, g/L) and pH was studied and optimized using Response Surface Methodology (RSM). The optimum values of C0*, G* and pH* were found to be 20.7 mg/L, 34.4 g/L, and 4.96 respectively; in this point the removal efficiency is the maximum one (100.45 % given by response model and 98.32 % verified experimentally).

Cuvinte cheie: zinc removal, peat adsorbent, optimization, response surface methodology