کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6452469 1417607 2017 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Reuse of TiO2-based catalyst for solar driven water treatment; thermal and chemical reactivation
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بیو مهندسی (مهندسی زیستی)
پیش نمایش صفحه اول مقاله
Reuse of TiO2-based catalyst for solar driven water treatment; thermal and chemical reactivation
چکیده انگلیسی


- We study the solar driven degradation of diclofenac by reused photocatalyst.
- Novel TiO2-zeolite based photocatalysts were used.
- Thermal and chemical reactivation strategies were used using response surface modeling.
- Thermal reactivation yielded higher diclofenac and overall organic carbon removal.
- Chemical reactivation slightly improved photocatalyst stability and biodegradability in reuse cycles.

Reuse of photocatalyst and activity-loss in consecutive cycles presents a major hurdle in the environmental application. In this study, thermal and chemical treatments have been investigated as potentially viable methods for photocatalyst reactivation. A composite prepared from titania and iron-exchanged zeolite was used as photocatalyst for diclofenac (DCF) removal under simulated solar irradiation. DCF and total organic carbon (TOC) removal extents, biochemical and chemical oxygen demand were monitored in reuse cycles, for air-dried, and thermally and chemically reactivated photocatalyst. Thermal reactivation yielded higher DCF and TOC removal extents, while chemical reactivation slightly improved photocatalyst stability and biodegradability in reuse cycles.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 333, 15 January 2017, Pages 117-129
نویسندگان
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