کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1696570 1519134 2007 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Modified hectorites and adsorption studies of a reactive dye
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات ژئوشیمی و پترولوژی
پیش نمایش صفحه اول مقاله
Modified hectorites and adsorption studies of a reactive dye
چکیده انگلیسی

Hectorite has been modified by two different cationic surfactants namely cetyldimethyl benzylammonium chloride and cetylpyridinium chloride for the adsorption of an anionic dye, C.I. Reactive Orange 122. The modified hectorites were characterized by XRD, SEM and BET analyses. Batch experiments were carried out for the adsorption process in terms of effect of pH, adsorbent dosage, contact time, effect of salts and different dye concentrations. Experimental results show that acidic pH favours maximum colour removal. The data are well fitted by Langmuir isotherm and the adsorption capacity for cetyldimethyl benzylammonium hectorite (CDBA-hect) and cetylpyridinium hectorite (CP-hect) have been found to be 78 and 84 mg/g respectively. Kinetic studies were fitted with the pseudo-second-order kinetic model.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Clay Science - Volume 37, Issues 1–2, June 2007, Pages 207–214
نویسندگان
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