کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5361246 1388271 2012 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Adsorption of 2,4,6-trinitrotoluene on carboxylated porous polystyrene microspheres
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Adsorption of 2,4,6-trinitrotoluene on carboxylated porous polystyrene microspheres
چکیده انگلیسی

Large-pore-size (150 nm) polystyrene (PSt) microspheres were carboxylated with phthalic anhydride (PA) through Friedel-Crafts acetylation to study the adsorption of 2,4,6-trinitrotoluene (TNT) on this material from aqueous solution. The scanning electron microscope (SEM) images and mercury porosimetry measurements (MPM) of the microspheres showed that the pore structure was unchanged during the reaction. High adsorption capacity (11.2 mg g−1 of suction-dried adsorbent) and adsorption rate (33.9 mg g−1 h−1) for TNT were observed during the study. As shown by the adsorption isotherm, the adsorption of TNT on PA-PSt can be described by the Freundlich adsorption equation, indicating heterogeneous adsorption process. On-column adsorption of TNT on PA-PSt and elution indicated that TNT can be completely removed from aqueous solution and condensed into acetone.

► Fast adsorption of TNT using PA-PSt. ► High adsorption capacity of PA-PSt for TNT. ► Completely remove TNT using PA-PSt column. ► Fast regeneration of PA-PSt with acetone.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 258, Issue 8, 1 February 2012, Pages 3624-3628
نویسندگان
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