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Analytical Letters Volume 42, 2009 - Issue 6
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EXTRACTION

Comparative Study for the Removal of Oxadiazon from Aqueous Solutions by Adsorption on Chitosan and Activated Carbon

Majid Arvand Department of Chemistry, Faculty of Science, University of Guilan, Rasht, IranCorrespondence[email protected]
,
Laleh Latify Department of Chemistry, Faculty of Science, University of Guilan, Rasht, Iran
,
Hossein Tajmehri Kimya Problemleri Ìnstitutu, Azerbayjan Milli EA-mn, Azerbaijan
,
Ali I. Yagubov Kimya Problemleri Ìnstitutu, Azerbayjan Milli EA-mn, Azerbaijan
,
Ali N. Nuriyev Kimya Problemleri Ìnstitutu, Azerbayjan Milli EA-mn, Azerbaijan
,
Akram Pourhabib Department of Chemistry, Teaching and Training Organization, Rasht, Iran
,
Seyyed J. Mousavi Science and Research Campus, Islamic Azad University, Tehran, Iran
&
Mohammad R. Abolhassani Science and Research Campus, Islamic Azad University, Tehran, Iran
 show all
Pages 856-869 | Received 20 Nov 2008, Accepted 05 Jan 2009, Published online: 28 Mar 2009
 
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Abstract

In the present investigation, chitosan and activated carbon are used as adsorbents for the removal of oxadiazon from aqueous solutions. The analyzing system was a gas chromatograph equipped with mass selective detector. The equilibrium studies are systematically carried out in a batch process, covering various process parameters that include agitation time, adsorbent dosage, and pH of the aqueous solution. Also, the relationship between extraction of oxadiazon and volume of aqueous/organic phase as well as the effect of inorganic salt were investigated. Adsorption behavior was found to follow Freundlich and Langmuir isotherms. The adsorption mechanism is described by a pseudo-second-order kinetics.

The authors are thankful to the postgraduate office of Guilan University for the support of this work.

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