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• W2033152729 abstract "In the present work the potential of Parthenium (P. hysterophorus L.) weed to remove Cr(VI) ions from aqueous solution was reported. FTIR was used to study the functional groups present on the surface of the biosorbent and it was found that carboxyl, amine and alkane groups were the leading Cr binding groups. Effect of various parameters such as contact time, temperature, pH, agitation speed, biosorbent dose and initial Cr(VI) concentration on the biosorption was investigated by batch process. The equilibrium data was well described by both Langmuir and Freundlich isotherms. The biosorption capacity of Parthenium weed for Cr(VI) was found to be 24.5 mg g−1 at pH 1.0, 0.1 g biomass dose, 200 rpm, 160 min equilibrium time and 20 °C. The study of thermodynamic parameters confirmed that the biosorption of Cr(VI) onto Parthenium weed was feasible, spontaneous and exothermic within 20–60 °C. The magnitude of heat of biosorption was calculated as 7.83 kJ mol−1 which confirmed that biosorption followed the physical process. Kinetic evaluation of experimental data showed that biosorption of Cr(VI) closely followed pseudo-second-order kinetics and surface diffusion was found to be the rate controlling step." @default.
• W2033152729 created "2016-06-24" @default.
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• W2033152729 date "2011-10-01" @default.
• W2033152729 modified "2023-09-23" @default.
• W2033152729 title "Biosorptive uptake of Cr(VI) from aqueous solutions by Parthenium hysterophorus weed: Equilibrium, kinetics and thermodynamic studies" @default.
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• W2033152729 doi "https://doi.org/10.1016/j.cej.2011.08.068" @default.
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