CIESC Journal ›› 2012, Vol. 20 ›› Issue (3): 535-542.

• 香港科技大学化学与生物分子工程系戈登?麦凯教授退休纪念专刊 • 上一篇    下一篇

竹制活性炭处理酸性染料废水吸附等温线模型的误差分析

L.S. Chan1,2, W.H. Cheung1, S.J. Allen2, G. McKay1   

  1. 1 Department of Chemical and Biomolecular Engineering, the Hong Kong University of Science and Technology, Hong Kong, China 2 School of Chemistry and Chemical Engineering, Queen’s University Belfast, Belfast, Northern Ireland, UK
  • 收稿日期:2012-02-06 修回日期:2012-05-04 出版日期:2012-06-28 发布日期:2012-05-04

Error analysis of adsorption isotherm models for acid dyes onto bamboo derived activated carbon

L.S. Chan1,2, W.H. Cheung1, S.J. Allen2, G. McKay1   

  1. 1 Department of Chemical and Biomolecular Engineering, the Hong Kong University of Science and Technology, Hong Kong, China 2 School of Chemistry and Chemical Engineering, Queen’s University Belfast, Belfast, Northern Ireland, UK
  • Received:2012-02-06 Revised:2012-05-04 Online:2012-06-28 Published:2012-05-04

摘要： High surface area activated carbons were produced by thermal activation of waste bamboo scaffolding with phosphoric acid. Single component equilibrium dye adsorption was conducted on the carbons produced and compared with a commercially available carbon. Two acid dyes with different molecular sizes, namely Acid Yellow 117 (AY117) and Acid Blue 25 (AB25), were used to evaluate the adsorption capacity of the produced carbons. It was found that the dye with smaller molecular size, AB 25, was readily adsorbed onto the produced carbon, nearly three times higher than a commercially available carbon, while the larger size dye, AY117, showed little adsorption. The experimental data were analyzed using isotherm equations including Langmuir, Freundlich, Tempkin, Toth, Redlich-Peterson and Sips equations. The equilibrium data were then analyzed using five different non-linear error analysis methods.

关键词: adsorption, activated carbon, acid dye, equilibrium isotherm, error analysis, bamboo

Abstract: High surface area activated carbons were produced by thermal activation of waste bamboo scaffolding with phosphoric acid. Single component equilibrium dye adsorption was conducted on the carbons produced and compared with a commercially available carbon. Two acid dyes with different molecular sizes, namely Acid Yellow 117 (AY117) and Acid Blue 25 (AB25), were used to evaluate the adsorption capacity of the produced carbons. It was found that the dye with smaller molecular size, AB 25, was readily adsorbed onto the produced carbon, nearly three times higher than a commercially available carbon, while the larger size dye, AY117, showed little adsorption. The experimental data were analyzed using isotherm equations including Langmuir, Freundlich, Tempkin, Toth, Redlich-Peterson and Sips equations. The equilibrium data were then analyzed using five different non-linear error analysis methods.

Key words: adsorption, activated carbon, acid dye, equilibrium isotherm, error analysis, bamboo

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