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Acta Chimica Sinica >

2012 , Vol. 70 >Issue 06: 683 - 690

DOI: https://doi.org/10.6023/A1110081

Special Topic

Sorption of o-Cresol on Pristine, Calcined and Modified Hydrotalcite-like Compounds

  • Li Yan ,
  • Shi Liwen ,
  • Liu Zhishan ,
  • Yang Guoqing
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  • Department of Chemistry, Changzhi College, Changzhi 046011

Received date: 2011-10-08

  Revised date: 2012-01-10

  Online published: 2012-01-20

Supported by

Project supported by the National Natural Science Foundation of China (No. 20573065), the project of Shanxi Province Higher Educational Science and Technology Program (No. 20091038) and 2010 Shanxi Province College of Innovative Pilot Project.

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Abstract

Mg-Al hydrotalcite-like compound (HTlc), calcined HTlc (CHTlc) and dodecylsulfate anionintercalated Mg-Al HTlc (DS·HTlc) were prepared. The sorption behavior of o-cresol on the HTlc, CHTlc and DS·HTlc was investigated. The sorption kinetics and sorption isotherms of o-cresol on the HTlc, CHTlc and DS·HTlc can all be well fitted with the pseudo-second order kinetic and Freundlich equation, respectively. The results indicated that the sorption rate and sorption amount of o-cresol on the DS·HTlc is much higher than that on the CHTlc, which is little higher than that on the HTlc. The sorption amount of o-cresol on the HTlc and CHTlc increased firstly and then decreased with increasing pH in the initial pH range of 5.00～13.00 and increased with increasing temperature. The sorption amount of o-cresol on the DS·HTlc decreased gradually with increasing initial pH and temperature. The sorption amount of o-cresol on the HTlc, CHTlc and DS·HTlc increased with the increasing electrolyte (NaCl) concentration. The sorption mechanism was discussed in detail and the DS·HTlc will be a new kind of highly effective adsorbent for phenolic pollution.

Key words： Mg-Al hydrotalcite-like compound (HTlc); calcined HTlc; dodecylsulfate ion-intercalated HTlc; o-cresol; sorption

Cite this article

Li Yan , Shi Liwen , Liu Zhishan , Yang Guoqing . Sorption of o-Cresol on Pristine, Calcined and Modified Hydrotalcite-like Compounds[J]. Acta Chimica Sinica, 2012 , 70(06) : 683 -690 . DOI: 10.6023/A1110081

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