Study on the fouling behavior of HDPE/PE-g-MA/EVA blend membrane fabricated via thermally induced phase separation method

Publish Year: 1396
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:

JR_POJ-4-2_007

تاریخ نمایه سازی: 2 آبان 1396

Abstract:

In this study, neat HDPE and HDPE/PE-g-MA/EVA blend membranes were fabricated via thermally induced phase separation (TIPS) method and their fouling behaviors were examined using filtration of BSA protein. Membranes were characterized using FESEM, AFM, ATR-FTIR analyses and porosity measurement. Fouling behavior of membranes was analyzed using the resistance-in-series (RIS), classic and combined pore blocking models. The results of RIS model revealed that the magnitude of inherent, reversible and irreversible resistances decreased from 0.611 ×1013m-1 and ,1.578 ×1013m-1 and 0.525 ×1013m-1 for the neat membrane to 0.237 ×1013m-1, 0.789 ×1013m-1 and 0.154×1013m-1 for the blend membrane, respectively. None of the classical Hermia’s models were able to accurately predict fouling during the entire filtration run. The results obtained from the combined pore blocking model indicated that the combined cake formation-intermediate blocking model provided good prediction of fouling mechanism for both the membranes. However, comparison between fitted parameters showed that much greater fouling occurred for pure HDPE membrane. The key reasons for such different fouling behaviors were mainly attributed to the difference in hydrophobicity as well as the distribution of pore size on the surface of the pure and blend membranes.

Authors

Setareh Heidari

Membrane Technology Research Center, Sahand University of Technology, Tabriz, Iran|Faculty of Chemical Engineering, Sahand University of Technology, Tabriz, Iran

Yoones Jafarzadeh

Membrane Technology Research Center, Sahand University of Technology, Tabriz, Iran|Faculty of Chemical Engineering, Sahand University of Technology, Tabriz, Iran

Mahdi Seyfollahi Samarin

Membrane Technology Research Center, Sahand University of Technology, Tabriz, Iran|Faculty of Chemical Engineering, Sahand University of Technology, Tabriz, Iran

Reza Yegani

Membrane Technology Research Center, Sahand University of Technology, Tabriz, Iran|Faculty of Chemical Engineering, Sahand University of Technology, Tabriz, Iran