در این تحقیق، تخریب فتوکاتالیستی رنگزای آبی مستقیم 71 درون یک راکتور دوغابی در حضور نانو ذرات اکسید روی مورد بررسی قرار گرفت و اثر عوامل pH، میزان کاتالیست، غلظت اولیه رنگ زا و شدت لامپ UV بر راندمان حذف تعیین گردید. حذف کامل رنگزا در غلظت mg/L 50 رنگزا، 9=pH و در حضور g/L 288/0 کاتالیست تحت شدت لامپ UVC 60 وات پس از گذشت 4 ساعت به دست آمد. راندمان حذف 14/60 درصد COD پس از گذشت 30 ساعت مشاهده شد. بررسی سینتیک واکنش و انجام آزمایش کروماتوگرافی مایع- طیف سنجی جرمی نشان داد که فرایند مورد نظر با ضریب همبستگی 987/0 از مدل مرتبه دوم تبعیت میکند و ترکیبات پیچیده موجود در محلول شکسته میشوند.
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