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- W2392799349 abstract "The effect of several important parameters on the removal of Rhodamine-B by buckwheat hull were evaluated using an optimal experimental design based on Box-Behnken Response Surface method.The factors included temperature,pH,initial dye concentration and adsorbent dosage.A quadratic model for predicting the optimum removal conditions was derived,and the obtained optimal parameters were temperature 50 ℃,pH=2.0,initial dye concentration 100 mg · L-1,and adsorbent 11.75 g · L-1.At the optimal conditions,the maximal removal rate of Rhodamine-B reached 92.30%.Langmuir,Freundlich and Dubinin-Radushkevich isothermal equations were applied to fit the adsorption equilibrium data.The Langmuir isotherm adsorption model was found to fit the data best,and adsorption capacity of the biosorbent was 79.34 mg · g-1.Thermodynamic parameters were calculated for the reactions,including ΔG0(-27.29~-24.84 kJ · mol-1),ΔH0(13.29 kJ · mol-1),ΔS0(125.60 J · mol-1 · K-1) and E(11.74~12.37 kJ · mol-1).Finally,the removal mechanism was discussed with pHpzc,BET and FTIR analyses.This study implied that buckwheat hull is a promising sorbent for removing Rhodamine-B from water." @default.
- W2392799349 created "2016-06-24" @default.
- W2392799349 creator A5021475073 @default.
- W2392799349 date "2011-01-01" @default.
- W2392799349 modified "2023-09-23" @default.
- W2392799349 title "Biosorption of Rhodamine-B by buckwheat hull:Response surface methodology and thermodynamics study" @default.
- W2392799349 hasPublicationYear "2011" @default.
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