کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
153647 456535 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
AD–OX: A sequential oxidative process for water treatment—Adsorption and batch CWAO regeneration of activated carbon
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
AD–OX: A sequential oxidative process for water treatment—Adsorption and batch CWAO regeneration of activated carbon
چکیده انگلیسی

A sequential process for water treatment involving usual adsorption on activated carbon (AC) followed by wet air catalytic oxidation of the adsorbed pollutants has been carried out in a fixed bed reactor with a mixture of two model pollutants. The first step achieves water purification while the second one reduces the organic pollution but also, more importantly, performs some AC in situ regeneration.The experimental work has been done with AC yet extensively used and stabilized by long range continuous oxidation. The two steps have been analyzed successively showing very important drop of adsorption capacity with respect to fresh AC but efficient oxidative partial regeneration. As expected with used AC no more evolution occurs in between two consecutive runs. The first step of competitive adsorption has been simulated by a model leading to higher diffusivities than estimations based on correlations. The main features of the complex second step, involving simultaneous non-isothermal desorption and three phase catalytic reaction, are qualitatively explained.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 152, Issue 1, 1 October 2009, Pages 189–194
نویسندگان
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