کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
585763 1453187 2006 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Degradation and detoxification of formaline wastewater by advanced oxidation processes
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
Degradation and detoxification of formaline wastewater by advanced oxidation processes
چکیده انگلیسی

In this study, advanced oxidation processes (AOPs) utilizing the combinations of UV/H2O2, Fenton, photo-Fenton and the combination of Fenton/photo-Fenton reactions were investigated in lab-scale experiments for the degradation of formaline wastewater. The studied toxic chemicals were formaldehyde and methanol in mixture solution, so-called formalin, which is the embalming agent in mortuaries. The experimental results showed that the photo-Fenton process was the most effective treatment process among the studied AOPs. Pseudo-first-order degradation rate constants of formaldehyde and methanol were obtained from batch experimental data. In the combination of Fenton/photo-Fenton reactions, the results show that applying UV light at an early stage of the reaction might not be necessary for a speedy oxidation reaction of the Fenton process. With Fenton and photo-Fenton processes, mineralization of formaline wastewater can be achieved, as no residual TOC is detected in the effluent after the reaction period. It is suggested that Fenton and photo-Fenton processes are viable techniques for the formaline wastewater treatment as they were able to provide high degradation of formaldehyde and methanol with relatively low toxicity of the by-products in the effluent.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 135, Issues 1–3, 31 July 2006, Pages 337–343
نویسندگان
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