کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6307129 | 1618826 | 2016 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Treatment of crystallized-fruit wastewater by UV-A LED photo-Fenton and coagulation-flocculation
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم محیط زیست
شیمی زیست محیطی
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چکیده انگلیسی
This work reports the treatment of crystallized-fruit effluents, characterized by a very low biodegradability (BOD5/COD <0.19), through the application of a UV-A LED photo-Fenton process. Firstly, a Box-Behnken design of Response Surface Methodology was applied to achieve the optimal conditions for the UV-A LED photo-Fenton process, trying to maximize the efficiency by saving chemicals and time. Under the optimal conditions ([H2O2]Â =Â 5459Â mg/L; [Fe3+]Â =Â 286Â mg/L; time >180Â min), a COD removal of 45, 64 and 74% was achieved after 360Â min, using an irradiance of 23, 70 and 85Â W/m2 respectively. Then a combination of UV-A LED photo-Fenton with coagulation-flocculation-decantation attained a higher COD removal (80%), as well as almost total removal of turbidity (99%) and total suspended solids (95%). Subsequent biodegradability of treated effluents increased, allowing the application of a biological treatment step after the photochemical/CFD with 85Â W/m2.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 145, February 2016, Pages 351-359
Journal: Chemosphere - Volume 145, February 2016, Pages 351-359
نویسندگان
Jorge RodrÃguez-Chueca, Carlos Amor, José R. Fernandes, Pedro B. Tavares, Marco S. Lucas, José A. Peres,