کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
582071 1453162 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Coupling process between solid-liquid extraction of amino acids by calixarenes and photocatalytic degradation
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
Coupling process between solid-liquid extraction of amino acids by calixarenes and photocatalytic degradation
چکیده انگلیسی
The removal of biological or pharmaceutical compounds through the wastewater treatment becomes relevant. These compounds are present as traces in sewage. In this work, we propose a coupling process which combines the pre-concentration of the pollutant by selective extraction and then degradation of these pollutants by photocatalysis in presence of TiO2. This process is efficient at room temperature by activation of a photocatalyst (TiO2) under UV light. Aromatic amino acids were chosen as model of pharmaceutical pollutants. Their extraction from water, ensured by calixarene derivatives, and their photocatalytic degradation were investigated. It was shown that photodegradation follows a first-order kinetic and that the rate constant enhances with amino acid concentration. The effect of the pH on the rate constant will be discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 166, Issues 2–3, 30 July 2009, Pages 1195-1200
نویسندگان
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