کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
583404 1453173 2008 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Laser enhanced photo-catalytic removal of phenol from water using p-type NiO semiconductor catalyst
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
Laser enhanced photo-catalytic removal of phenol from water using p-type NiO semiconductor catalyst
چکیده انگلیسی
Phenol is a carcinogen to humans and is a serious health concern, even at low concentrations. The efficient removal of phenol inside waste water is highly desirable. Laser induced photo-catalysis has been applied for removal of phenol from waste water using p-type NiO semiconductor catalyst for the first time. The characteristics of phenol removal using laser induced photo-catalytic process were investigated. The dependence of phenol removal on laser energy (100-250 mJ) and laser irradiation time (0-60 min) was studied. The rate of phenol removal process was characterized using UV absorption spectrometry, Raman spectroscopy and gas chromatography. In addition, the role of pH changes during the removal process was also investigated. Laser induced photo-catalytic process is highly efficient in removal of phenol in water over a short period of time (in minutes) as compared to conventional methods using lamps (hours). The phenol removal process pursued the first order kinetics with decay constant = 0.0125 min−1.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 155, Issues 1–2, 30 June 2008, Pages 83-89
نویسندگان
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