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2006•Biomass Chemical EngineeringRequires access

Adsorption Behavior of the Bamboo-charcoal for Zn~(2+)

Qiwei Zhang

Open publisher page 3 citations

Abstract

The adsorption behavior of the bamboo-charcoal for Zn~(2+) was studied in an aqueous solution.The effects of contact time,pH,mass of absorbent,adsorption temperature,and initial concentration of Zn~(2+) on absorption were determined.Results showed that bamboo-charcoal could effectively remove Zn~(2+) from the aqueous solution with high adsorption ability at pH 3.2～6.2,in which the optimum is pH 5.3 in HAc-NaAc medium.Because adsorption decreased with increase in adsorption temperatures,it means that the sorption process is an exothermic process,which the adsorption behavior of the bamboo-carbon for Zn~(2+) obeys the Freundlich isotherm model.After adsorption the bamboo-charcoal can be regenerated quantificationally with H_2O and microwave heating in a regeneration ratio of 97 %.

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What this paper is about

The adsorption behavior of the bamboo-charcoal for Zn~(2+) was studied in an aqueous solution.The effects of contact time,pH,mass of absorbent,adsorption temperature,and initial concentration of Zn~(2+) on absorption were determined.Results showed that bamboo-charcoal could effectively remove Zn~(2+) from the aqueous solution with high adsorption ability at pH 3.2～6.2,in which the optimum is pH 5.3 in HAc-NaAc medium.Because adsorption decreased with increase in adsorption temperatures,it means that the sorption process is an exothermic process,which the adsorption behavior of the bamboo-carbon for Zn~(2+) obeys the Freundlich isotherm model.After adsorption the bamboo-charcoal can be regenerated quantificationally with H_2O and microwave heating in a regeneration ratio of 97 %.

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Available abstract

The adsorption behavior of the bamboo-charcoal for Zn~(2+) was studied in an aqueous solution.The effects of contact time,pH,mass of absorbent,adsorption temperature,and initial concentration of Zn~(2+) on absorption were determined.Results showed that bamboo-charcoal could effectively remove Zn~(2+) from the aqueous solution with high adsorption ability at pH 3.2～6.2,in which the optimum is pH 5.3 in HAc-NaAc medium.Because adsorption decreased with increase in adsorption temperatures,it means that the sorption process is an exothermic process,which the adsorption behavior of the bamboo-carbon for Zn~(2+) obeys the Freundlich isotherm model.After adsorption the bamboo-charcoal can be regenerated quantificationally with H_2O and microwave heating in a regeneration ratio of 97 %.

Key concepts: Bamboo charcoal, Adsorption, Aqueous solution, Bamboo, Freundlich equation, Sorption, Chemistry, Exothermic reaction

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