Abstract




 
   

IJE TRANSACTIONS A: Basics Vol. 30, No. 10 (October 2017) 1425-1433    Article in Press

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  PREPARATION AND CHARACTERIZATION OF AN ANTIFOULING POLYETHERSULFONE NANOFILTRATION MEMBRANE BLENDED WITH GRAPHENE OXIDE/AG NANOPARTICLES
 
F. Gholami, S. Zinadini, A. A. Zinatizadeh, E. Noori and E. Rafiee
 
( Received: July 07, 2017 – Accepted in Revised Form: July 07, 2017 )
 
 

Abstract    Graphene oxide/Ag nanoparticles (Ag/GO) was prepared and employed to synthesize antifouling polyethersulfone (PES) mixed matrix membranes. The performance of the membranes was evaluated in terms of flux, hydrophilicity and anti-biofouling properties. With increment of the Ag/GO from 0 to 0.1 wt.%, the pure water flux increased from 24.7 up to 54.1 kg/m2 h. The flux recovery ratio (FRR) of the membranes was performed using milk powder solution and the results illustrated that the 0.1 wt.% Ag/GO membrane had the best fouling resistance with the FRR value of 95.45%. The performance of the nanofiltration was assessed using the retention of Direct Red 16. It was indicated that the Ag/GO-PES membranes have remarkable dye removal (98.38% rejection). The anti-biofouling activities of the 0.1 wt.% Ag/GO mixed matrix membrane was also investigated using activated sludge and the results showed a notable improvement.

 

Keywords    Graphene oxide/Ag nanocomposite, PES nanofilteration membrane, hydrophilicity, anti-biofouling.

 

چکیده    نانوذرات اکسید گرافن/نقره (Ag/GO) تهیه و برای تولید غشاهای زمینه مخلوط پلی­مر پلی اتر سولفون(PES) با خاصیت ضد گرفتگی به کار گرفته شد. عملکرد غشاء تهیه شده از لحاظ شار عبوری و خواص آب­دوستی و ضد زیست گرفتگی مورد بررسی قرار گرفت. با افزایش نانوذرات Ag/GO از 0 تا 1/0 درصد وزنی t، جریان آب خالص از7/24 به 1/54 کیلوگرم در متر مربع افزایش یافت. نسبت شار برگشتی (FRR) غشا با استفاده از محلول شیر خشک انجام شد و نتایج نشان داد که غلظت 1/0 درصد وزنی Ag/GO دارای بهترین مقاومت گرفتگی با مقدار FRR 45/95 درصد بود. عملکرد نانوفیلتراسیون با استفاده از عبور دادن رنگ Direct Red 16 بررسی شد. مشخص شد که غشاهای Ag / GO-PES دارای حذف رنگ قابل توجه (98.38٪ پس دهی) هستند. فعالیت ضد زیست گرفتگی غشای زمینه مخلوط 1/0 درصد وزنی Ag/GO با استفاده از لجن فعال نیز مورد بررسی قرار گرفت و نتایج حاکی از بهبود قابل ملاحظه در عملکرد داشت.

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