Use of Cork Waste as Biosorbent for Hexavalent Chromium
The biosorption by cork powder is considered as a new method for heavy metal removal from industrial waste waters such as chromium tanning factories. The aim of this study is to evaluate the efficiency extent of this method using a cork powder as biosorbent for hexavalent chromium Cr(VI). The Fourier Transform Infrared spectroscopy (FTIR) analysis permits to distinguish the type of functional groups likely to participate in metal binding. A linear form of BET isotherms for all the three used temperatures (25, 35 and 45°C) and a pseudo-second-order Lagergren equation of adsorption kinetics are obtained. Other experimental results highlight the meaningful influence of parameters such as contact time, pH and concentrations of the solution, on chromium adsorption rate that reach a 97% value under definite conditions particularly a pH of 2-3 values.
Maher Soueidan, Mohamad Roumié and Pierre Masri
Z. Sfaksi et al., "Use of Cork Waste as Biosorbent for Hexavalent Chromium", Advanced Materials Research, Vol. 324, pp. 497-500, 2011