十六烷基三甲基季铵阳离子改良二氧化硅对酸性染料的吸着

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十六烷基三甲基季铵阳离子改良二氧化硅对酸性染料的吸着

Tahir Imran Qureshi^a; Dong-Ik Song^b; Young-Woong Jeon^c; Young-Sup Lee^a

^a Department of Biochemistry,Taegu 702-701, Korea
^b Department of Chemical Engineering, Taegu 702-701, Korea
^c Department of Environmental Engineering, Kyungpook National University, Taegu 702-701,
Korea

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2002-02-28 发布日期:2002-02-28
通讯作者: Tahir Imran Qureshi

Sorption of Acid Dyes onto Silica Modified with Cetyltrimethylammonium Cations

Tahir Imran Qureshi^a; Dong-Ik Song^b; Young-Woong Jeon^c; Young-Sup Lee^a

^a Department of Biochemistry,Taegu 702-701, Korea
^b Department of Chemical Engineering, Taegu 702-701, Korea
^c Department of Environmental Engineering, Kyungpook National University, Taegu 702-701,
Korea

Received:1900-01-01 Revised:1900-01-01 Online:2002-02-28 Published:2002-02-28
Contact: Tahir Imran Qureshi

摘要/Abstract

摘要： The sorption behavior of acid dyes onto cetyltrimethylammonium bromide (CTAB)- modified
silica as a function of pH in the aqueous medium was studied. Single- and multi-solute
sorption equilibria of orange Ⅱ(OR),phenol red (PR) and Eriochrome Black T (EBT) were
studied at pH 3, unbuffered water pH and pH 11. Sorption behavior of EBT could not be
conducted at pH 3 due to its aggregation in acidic medium. All the reaction
conditions,experimental protocols and techniques remained the same throughout the sorption
process. Sorption isotherms for single-solute system were fitted by the Langmuir model,
while Langmuir competitive model (LCM) and the ideal adsorbed solution theory (IAST)
coupled with Langmuir model (IAST/Langmuir) were used for the prediction of multisolute
competitive sorption. Sorption affinities influenced by the factors like physical
interactive forces between the molecules of CTA on silica and sorbate, structural
limitations of the dyes based on their geometrical arrangement were investigated. Sorption
affinity of OR was found to be higher than that of EBT and PR at all the pH values
investigated. Magnitude of the sorption capacities was observed to be higher in acidic
medium but lower in alkaline medium. Trends of the sorption affinities in multisolute
system were similar to those in single-solute system but magnitude of the sorption
capacities was significantly reduced due to the prevailing competition among the sorbates.

关键词: CTAB;silica;sorption;acid dyes

Abstract: The sorption behavior of acid dyes onto cetyltrimethylammonium bromide (CTAB)- modified
silica as a function of pH in the aqueous medium was studied. Single- and multi-solute
sorption equilibria of orange Ⅱ(OR),phenol red (PR) and Eriochrome Black T (EBT) were
studied at pH 3, unbuffered water pH and pH 11. Sorption behavior of EBT could not be
conducted at pH 3 due to its aggregation in acidic medium. All the reaction
conditions,experimental protocols and techniques remained the same throughout the sorption
process. Sorption isotherms for single-solute system were fitted by the Langmuir model,
while Langmuir competitive model (LCM) and the ideal adsorbed solution theory (IAST)
coupled with Langmuir model (IAST/Langmuir) were used for the prediction of multisolute
competitive sorption. Sorption affinities influenced by the factors like physical
interactive forces between the molecules of CTA on silica and sorbate, structural
limitations of the dyes based on their geometrical arrangement were investigated. Sorption
affinity of OR was found to be higher than that of EBT and PR at all the pH values
investigated. Magnitude of the sorption capacities was observed to be higher in acidic
medium but lower in alkaline medium. Trends of the sorption affinities in multisolute
system were similar to those in single-solute system but magnitude of the sorption
capacities was significantly reduced due to the prevailing competition among the sorbates.

Key words: CTAB, silica, sorption, acid dyes

Tahir Imran Qureshi, Dong-Ik Song, Young-Woong Jeon, Young-Sup Lee . 十六烷基三甲基季铵阳离子改良二氧化硅对酸性染料的吸着[J]. CIESC Journal.

Tahir Imran Qureshi, Dong-Ik Song, Young-Woong Jeon, Young-Sup Lee . Sorption of Acid Dyes onto Silica Modified with Cetyltrimethylammonium Cations[J]. .

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十六烷基三甲基季铵阳离子改良二氧化硅对酸性染料的吸着

Sorption of Acid Dyes onto Silica Modified with Cetyltrimethylammonium Cations

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