کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
733233 1461612 2017 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Laser decontamination and decomposition of PCB-containing paint
ترجمه فارسی عنوان
ضدعفونی لیزری و تجزیه رنگ حاوی PCB
کلمات کلیدی
ضدعفونی لیزری؛ فرسایش؛ تجزیه مستقیم؛ فنیل پلی کلرینه (PCB)
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی برق و الکترونیک
چکیده انگلیسی


• Development of a laser decontamination system with simultaneous decomposition.
• Experiments with a 10 kW high-power diode laser in continuous wave (cw) mode.
• Interaction between laser parameters, quality of concrete and PCB-concentration.
• Comparison between laser removal of epoxy paints and PCB-containing paints.
• PCB decontamination rates of 97% and PCB decomposition rates of 89%.

Decontamination of concrete surfaces contaminated with paint containing polychlorinated biphenyls is an elaborate and complex task that must be performed within the scope of nuclear power plant dismantling as well as conventional pollutant cleanup in buildings. The state of the art is mechanical decontamination, which generates dust as well as secondary waste and is both dangerous and physically demanding. Moreover, the ablated PCB-containing paint has to be treated in a separate process step.Laser technology offers a multitude of possibilities for contactless surface treatment with no restoring forces and a high potential for automation.An advanced experimental setup was developed for performing standard laser decontamination investigations on PCB-painted concrete surfaces. As tested with epoxy paints, a high-power diode laser with a laser power of 10 kW in continuous wave (CW) mode was implemented and resulted in decontamination of the concrete surfaces as well as significant PCB decomposition.The experimental results showed PCB removal of 96.8% from the concrete surface and PCB decomposition of 88.8% in the laser decontamination process. Significant PCDD/F formation was thereby avoided. A surface ablation rate of approx. 7.2 m2/h was realized.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics & Laser Technology - Volume 87, January 2017, Pages 31–42
نویسندگان
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