Abstract
A method is described for biosorption and water treatment of Cr(VI) from aqueous and real water samples by using gelatin-impregnated-yeast as a novel biosorbent. Gelatin and yeast materials (Gel–Yst) were combined together to form a novel eco-friendly, non-toxic, non-carcinogenetic, biodegradable, biocompatible and inexpensive biosorbent to enhance the extraction and biosorption of Cr(VI) from water. The potential affinity characters of Gel–Yst for biosorption of Cr(VI) were studied by the static technique in various buffer solutions. Other controlling experimental factors were also examined and evaluated. The effect of initial concentration of Cr(VI) was also evaluated to follow the postulates of Langmuir, Brunauer–Emmer–Teller (BET) and Dubinin–Radushkevich (D–R) adsorption isotherms. The potential applications of Gel–Yst biosorbent in water treatment processes of Cr(VI) from real acidic and neutral water samples by using multi-stage micro-column techniques were successfully accomplished.
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