Biosorption of Coper from Aqueous Solutions by Plant Root Tissues

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概要

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• Root tissues of two common weeds, Amaranthus spinosus and Solanum nigrum, were found to adsorb dissolved Cu^<2+> in aqueous solutions. The adsorption can be represented by Langmuir and Freundlich isotherms. The equilirium adsorption level was determined to be a function of initial solution pH and temperature. The adsorption capacity decreased with decreasing pH and increasing temperature. Alkaline pretreatment of the root tissue doubled the adsorption capacity. Ground powders of root tissues were immobilized within alginate gel beads (3 mm diameter) for use in a packed-bed column. The mass transfer coefficient was calculated using the rate of metal ion adsorption to the gel beads. Surface film mass transfer resistance was important. Continuous adsorption/desorption cycles for removing and concentrating Cu^<2+> in solution were performed using the packed-bed column, which would be useful for treating wastewater containing trace amounts of copper ions.

• 公益社団法人日本生物工学会の論文
• 1996-05-25

著者

• Chen Jyh-ping

  Department Of Chemical Engineering Chang Gung College Of Medicine And Technology

• CHEN Wen-Ren

  Department of Chemical Engineering & Materials Science, Yuan-Ze University

• Chen Wen-ren

  Department Of Chemical Engineering National Cheng Kung University

• HSU RUEY-CHI

  Department of Chemical Engineering, Chang Gung College of Medicine and Technology

• Hsu Ruey-chi

  Department Of Chemical Engineering Chang Gung College Of Medicine And Technology

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