Effect of constricted polymerization time on nanofiltration membrane characteristic and performance: A study using the Donnan Steric Pore Flow Model

2004 ◽  
Vol 94 (1) ◽  
pp. 394-399 ◽  
Author(s):  
A. L. Ahmad ◽  
B. S. Ooi ◽  
A. Wahab Mohammad ◽  
J. P. Choudhury
Keyword(s):  
Flow Model ◽  
Nanofiltration Membrane ◽  
Polymerization Time ◽  
Pore Flow ◽  
And Performance ◽  
Membrane Characteristic

Characteristic of Co–Polyamide Nanofiltration Membrane: The Effect of Reaction Time

2012 ◽  
Author(s):  
A. L. Ahmad ◽  
B. S. Ooi ◽  
M. M. D. Zulkali ◽  
J. P. Choudhury
Keyword(s):  
Reaction Time ◽  
Pore Size ◽  
Flow Model ◽  
Effective Thickness ◽  
The Other ◽  
Nanofiltration Membrane ◽  
Polymerization Time ◽  
Nanofiltration Membranes ◽  
Crosslinking Process ◽  
Pore Flow

Membran penurasan nano yang diubahsuai daripada polipiperazinamida telah dihasilkan dalam masa tindakbalas yang berbeza. Membran berkenaan dicirikan terhadap liang saiz dan ketebalan berkesan/keporosan dengan menggunakan model DSPM. Liang membran menjadi kecil pada permulaan tindakbalas disebabkan proses pengaitan bersilang tetapi liang saiz akan bertambah untuk jangkamasa tindakbalas yang lebih lama kerana kelemahan dinding liang membran. Walau bagaimanapun, nilai ketebalan berkesan/keporosan bertambah dengan masa dan menjadi stabil selepas 60s. Kesan masa tindakbalas terhadap liang saiz adalah tidak ketara berbanding dengan kesannya terhadap ketebalan berkesan/keporosan. Selama 2 minit tindakbalas, nilai ketebalan berkesan/keporosan untuk lapisan penapis berubah sebanyak 150%. Kata kunci: Penurasan Nano, masa tindakbalas, saiz liang, ketebalan berkesan/keporosan Modified polypiperazinamide nanofiltration membranes were fabricated under different reaction time. The membranes were characterized for its pore size and effective thickness/porosity using Donnan Steric Pore Flow Model. The pore size was reduced initially due to the crosslinking process but becomes larger at longer reaction time because of the weaker pores wall. On the other hand, the effective thickness/porosity grows with polymerization time and becomes constant after 60s. The effect of reaction time on the pore size is not as significant as effective thickness/porosity. Within 2 minutes of polymerization time, the effective thickness of the barrier layer would vary about 150%. Key words: Nanofiltration, reaction time, pore size, effective thickness/porosity

Development of nanofiltration membrane with high salt selectivity and performance stability using polyelectrolyte multilayers

Desalination ◽  
2014 ◽  
Vol 351 ◽  
pp. 19-26 ◽  
Author(s):  
Law Yong Ng ◽  
Abdul Wahab Mohammad ◽  
Ching Yin Ng ◽  
Choe Peng Leo ◽  
Rosiah Rohani
Keyword(s):  
High Salt ◽  
Polyelectrolyte Multilayers ◽  
Nanofiltration Membrane ◽  
And Performance

Fabrication and performance of a new type of charged nanofiltration membrane based on polyelectrolyte complex

2010 ◽  
Vol 357 (1-2) ◽  
pp. 80-89 ◽  
Author(s):  
Yanli Ji ◽  
Quanfu An ◽  
Qiang Zhao ◽  
Huanlin Chen ◽  
Jinwen Qian ◽  
...  
Keyword(s):  
Polyelectrolyte Complex ◽  
Nanofiltration Membrane ◽  
New Type ◽  
And Performance

Synthesis and performance of a novel nanofiltration membrane with a crosslinked sulfonated polysulfone separation layer

2016 ◽  
Vol 57 (54) ◽  
pp. 25960-25971 ◽  
Author(s):  
Xiaoli Ding ◽  
Zhiguang Liu ◽  
Xu Li ◽  
Hongyong Zhao ◽  
Mingming Hua ◽  
...  
Keyword(s):  
Nanofiltration Membrane ◽  
Sulfonated Polysulfone ◽  
And Performance

Preparation and performance of novel thermal stable composite nanofiltration membrane

2008 ◽  
Vol 2 (4) ◽  
pp. 402-406 ◽  
Author(s):  
Chunrui Wu ◽  
Shouhai Zhang ◽  
Fajie Yang ◽  
Chun Yan ◽  
Xigao Jian
Keyword(s):  
Nanofiltration Membrane ◽  
And Performance ◽  
Thermal Stable
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