Biosorption of Cr(VI) using low cost sorbents |
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| Authors: | N Fiol I Villaescusa M Martínez N Miralles J Poch J Serarols |
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| Institution: | (1) Chemical Engineering Dept., Universitat de Girona, Avda Lluis Santaló, 17003 Girona, Spain;(2) Chemical Engineering Dept., E.T.S.E.I.B., Universitat Politècnica de Catalunya, Avda Diagonal 647, 08028 Barcelona, Spain;(3) Applied Mathematics Dept., Universitat de Girona, Avda Lluis Santaló, 17003 Girona, Spain |
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| Abstract: | Waste products from industrial operations, such as yohimbe bark, grape stalks, cork and olive stones were investigated for
the removal of Cr(VI) from aqueous solutions. Equilibrium batch experiments at room temperature were performed. Metal uptake
showed a pH-dependent profile and optimum uptake at initial pH between 2.0–3.0. Slight influence of NaCl on metal uptake was
observed. The sorption data fitted well to the Langmuir model within the concentration range studied. Grape stalks proved
to be the most efficient sorbent followed by yohimbe bark, cork and olive stones.
N. Fiol is the recipient of the 2002 ACE Environmental Chemistry Award |
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| Keywords: | Yohimbe bark wastes Cork wastes Grape stalk wastes Olive stone wastes Chromium Metal removal |
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