کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4485535 1316956 2007 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Reaction pathways and kinetics of butylated hydroxyanisole with UV, ozonation, and UV/O3 processes
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
Reaction pathways and kinetics of butylated hydroxyanisole with UV, ozonation, and UV/O3 processes
چکیده انگلیسی

The chemical degradation of the endocrine disrupting chemical, butylated hydroxyanisole (BHA), was investigated by different treatment processes including ultraviolet (UV) irradiation, ozonation (O3), and UV/O3. O demethylation, dimerization, and oxidation have been found to be the main degradation mechanisms. A systematic decay pathway was proposed based on ten identified intermediates in the studied processes, including a unique pathway leading to the formation of precipitates in the ozonation process. An unconventional minimum-type variation of BHA decay rate constants from acidic to caustic range has been found for both ozonation and UV/O3 processes. The precipitates formed during ozonation can be removed during the process to optimize the treatment, while the UV/O3 process can offer a relatively fast and clean process to degrade BHA and its associated intermediates.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Water Research - Volume 41, Issue 4, February 2007, Pages 765–774
نویسندگان
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