Composite nanofiltration polyamide membrane: A study on the diamine ratio and its performance evaluation

被引:67
作者
Ahmad, AL
Ooi, BS
Mohammad, AW
Choudhury, JP
机构
[1] Univ Sans Malaysia, SPS, Sch Chem Engn, George Town, Malaysia
[2] Univ Kebangsaan Malaysia, Dept Chem & Proc Engn, Bangi 43600, Malaysia
关键词
D O I
10.1021/ie0497994
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Membranes were prepared by reacting diamine mixtures with trimesoyl chloride to produce composite nanofiltration polyamide membranes. The flux behavior as well as rejection profiles of monovalent and divalent ions were elucidated pertaining to the 3,5-diaminobenzoic acid (BA) content in the copolymer membranes. The polyamide characteristic group was confirmed by using the ATR-FTIR method. The pore size (r(p)), effective thickness/porosity (Deltax/A(k)), and surface charge density (X) of the membrane were investigated using the Donnan steric pore flow model (DSPM). The membrane with the addition of 0.05% BA shows some improvement in terms of flux. However, at higher loading of BA, flux is reduced. The rejection of divalent ions (Mg2+, SO42-) is higher than that of monovalent ions (Na+, Cl-). It was found that the diamine content and reaction time play key roles in determining the permeate flux, membrane parameters, and membrane separation capabilities.
引用
收藏
页码:8074 / 8082
页数:9
相关论文
共 40 条
[1]   Preparation and characterization of co-polyamide thin film composite membrane from piperazine and 3,5-diaminobenzoic acid [J].
Ahmad, AL ;
Ooi, BS ;
Choudhury, JP .
DESALINATION, 2003, 158 (1-3) :101-108
[2]   Surface modification of commercial composite polyamide reverse osmosis membranes [J].
Belfer, S ;
Purinson, Y ;
Fainshtein, R ;
Radchenko, Y ;
Kedem, O .
JOURNAL OF MEMBRANE SCIENCE, 1998, 139 (02) :175-181
[3]   Characterisation of nanofiltration membranes for predictive purposes - Use of salts, uncharged solutes and atomic force microscopy [J].
Bowen, WR ;
Mohammad, AW ;
Hilal, N .
JOURNAL OF MEMBRANE SCIENCE, 1997, 126 (01) :91-105
[4]  
CADOTTE JE, 1985, ACS SYM SER, V269, P273
[5]  
Cadotte JE, 1981, US Patent, Patent No. [4,277,344, 4277344]
[6]  
Fibiger R. F., 1988, Patent, Patent No. [US 4769148, 4769148]
[7]   Mathematical modeling of nanofiltration membranes with mixed electrolyte solutions [J].
Garcia-Aleman, J ;
Dickson, JM .
JOURNAL OF MEMBRANE SCIENCE, 2004, 235 (1-2) :1-13
[8]  
Gupta KC, 1997, J APPL POLYM SCI, V66, P643, DOI 10.1002/(SICI)1097-4628(19971024)66:4<643::AID-APP4>3.0.CO
[9]  
2-S
[10]   The characteristics of crosslinked PAA composite membrane for separation of aqueous organic solutions by reverse osmosis [J].
Huang, JC ;
Guo, QH ;
Ohya, H ;
Fang, J .
JOURNAL OF MEMBRANE SCIENCE, 1998, 144 (1-2) :1-11