کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
581281 1453158 2009 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Adsorptive desulfurization by activated alumina
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
Adsorptive desulfurization by activated alumina
چکیده انگلیسی
This study reports usage of commercial grade activated alumina (aluminum oxide) as adsorbent for the removal of sulfur from model oil (dibenthiophene (DBT) dissolved in n-hexane). Bulk density of alumina was found to be 1177.77 kg/m3. The BET surface area of alumina was found to decrease from 143.6 to 66.4 m2/g after the loading of DBT at optimum conditions. The carbon-oxygen functional groups present on the surface of alumina were found to be effective in the adsorption of DBT onto alumina. Optimum adsorbent dose was found to be 20 g/l. The adsorption of DBT on alumina was found to be gradual process, and quasi-equilibrium reached in 24 h. Langmuir isotherm best represented the equilibrium adsorption data. The heat of adsorption and change in entropy for DBT adsorption onto alumina was found to be 19.5 kJ/mol and 139.2 kJ/mol K, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 170, Issues 2–3, 30 October 2009, Pages 1133-1140
نویسندگان
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