Journal
SEPARATION AND PURIFICATION TECHNOLOGY
Volume 175, Issue -, Pages 238-247Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.seppur.2016.11.037
Keywords
Ultrafiltration membrane; Chemical ageing; Membrane performance; Critical operating condition
Categories
Funding
- National Natural Science Foundation of China [51578374, 51378349]
Ask authors/readers for more resources
This paper presents a study on the impact of sodium hypochlorite (NaClO) on the performance and fouling behavior of polysulfone (PSF) membranes. The performance of aged PSF membranes was studied under different transmembrane pressures (TMPs), and three critical TMPs including the pressure corresponding to critical flux (P-C), the pressure corresponding to critical filtration efficiency (P-V), and the pressure corresponding to the greatest retention ability (P-R) were innovatively proposed. In terms of an aged membrane, the filtration efficiency (eta(v)) and retention ability (R) were decreased, while, the enhanced sieving capacity (eta(s)) were experimentally proved. These are strongly related to modified surface properties and enlarged pore diameters of aged PSF membranes. The fitting results of Hermia's model and critical flux analysis mutually verified that the formation of cake layer fouling on an aged PSF membrane surface was delayed. However, the specific fouling results indicated the aged membrane suffered a more severe pore block fouling. Moreover, the target plot also implied that the critical parameters (P-C, P-V and P-R) can serve as indicators of the evolution of membrane performance and fouling behaviors. (C) 2016 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available