Biowaste Materials as Sorbents to Remove Chromium(vi) from Aqueous Environment- a Comparative Study
نویسندگان
چکیده
The adsorption of chromium(VI) ions from aqueous solutions has been investigated on Neem sawdust (NS), Mango sawdust (MS), Wheat shell (WS), Sugarcane bagasse (SB) and Orange peel (OP). The adsorbent which showed highest chromium(VI) removal was Neem sawdust. The influence of pH, contact time, biomass dosage and initial metal concentration on biosorption was investigated. The biosorptive capacities of the biosorbents were dependent on the pH of the chromium solution, with pH 2 being optimal. The adsorption data fitted well with the Langmuir isotherm model. The adsorption capacities were found to be 58.82, 37.73, 28.08, 23.8 and 19.80 mg/g for NS, MS, WH, SB and OP, respectively.
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