کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
585188 | 1453189 | 2006 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Removal of Supranol Yellow 4GL by adsorption onto Cr-intercalated montmorillonite
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
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چکیده انگلیسی
Cr(III)-intercalated montmorillonite was utilized as an adsorbent for the removal of the organic pollutant, Supranol Yellow 4GL, a synthetic dye used for chemical fibres. The material was prepared by the reaction of Na montmorillonite with a base-hydrolyzed solution of Cr nitrate salt (OHâ/Cr3+ molar ratios of 2). XRD data showed that the interlayer spacing (d001) of montmorillonite was increased from 12.35 to 23.06Â Ã
. The kinetics and mechanism of the adsorption of the acid dye, Supranol Yellow 4GL, on Cr(III)-intercalated montmorillonite was investigated. The equilibrium time was reached within 30 min. The process follows pseudo-second-order rate kinetics. The Langmuir isotherm described the adsorption data over the concentration range (20-160 mg/l). The separator factor RL revealed the favourable nature of this adsorption process. Also, the thermodynamic parameters such as ÎS°, ÎH°, ÎG° were determined.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 133, Issues 1â3, 20 May 2006, Pages 154-161
Journal: Journal of Hazardous Materials - Volume 133, Issues 1â3, 20 May 2006, Pages 154-161
نویسندگان
Z. Bouberka, A. Khenifi, N. Benderdouche, Z. Derriche,