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
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Treatment of crystallized-fruit wastewater by UV-A LED photo-Fenton and coagulation-flocculation
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] = 5459 mg/L; [Fe3+] = 286 mg/L; time >180 min), a COD removal of 45, 64 and 74% was achieved after 360 min, using an irradiance of 23, 70 and 85 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 85 W/m2.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 145, February 2016, Pages 351-359
نویسندگان
, , , , , ,