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

A. L. Ahmad, B. S. Ooi, Abdul Wahab Mohammad, J. P. Choudhury

Research output: Contribution to journalArticle

45 Citations (Scopus)

Abstract

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 (rp), effective thickness/porosity (Δx/Ak), 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 (Mg 2+, SO4 2-) 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.

Original languageEnglish
Pages (from-to)8074-8082
Number of pages9
JournalIndustrial and Engineering Chemistry Research
Volume43
Issue number25
Publication statusPublished - 8 Dec 2004

Fingerprint

Nanofiltration
Diamines
Nylons
Polyamides
membrane
Membranes
Composite materials
Fluxes
Ions
Acids
ion
acid
Surface charge
evaluation
Charge density
Pore size
Chlorides
Copolymers
Porosity
porosity

ASJC Scopus subject areas

  • Polymers and Plastics
  • Environmental Science(all)
  • Chemical Engineering (miscellaneous)

Cite this

Composite nanofiltration polyamide membrane : A study on the diamine ratio and its performance evaluation. / Ahmad, A. L.; Ooi, B. S.; Mohammad, Abdul Wahab; Choudhury, J. P.

In: Industrial and Engineering Chemistry Research, Vol. 43, No. 25, 08.12.2004, p. 8074-8082.

Research output: Contribution to journalArticle

@article{1441d0c38d754c0181f88051bc914c52,
title = "Composite nanofiltration polyamide membrane: A study on the diamine ratio and its performance evaluation",
abstract = "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 (rp), effective thickness/porosity (Δx/Ak), 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 (Mg 2+, SO4 2-) 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.",
author = "Ahmad, {A. L.} and Ooi, {B. S.} and Mohammad, {Abdul Wahab} and Choudhury, {J. P.}",
year = "2004",
month = "12",
day = "8",
language = "English",
volume = "43",
pages = "8074--8082",
journal = "Industrial & Engineering Chemistry Product Research and Development",
issn = "0888-5885",
publisher = "American Chemical Society",
number = "25",

}

TY - JOUR

T1 - Composite nanofiltration polyamide membrane

T2 - A study on the diamine ratio and its performance evaluation

AU - Ahmad, A. L.

AU - Ooi, B. S.

AU - Mohammad, Abdul Wahab

AU - Choudhury, J. P.

PY - 2004/12/8

Y1 - 2004/12/8

N2 - 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 (rp), effective thickness/porosity (Δx/Ak), 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 (Mg 2+, SO4 2-) 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.

AB - 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 (rp), effective thickness/porosity (Δx/Ak), 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 (Mg 2+, SO4 2-) 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.

UR - http://www.scopus.com/inward/record.url?scp=9744231311&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=9744231311&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:9744231311

VL - 43

SP - 8074

EP - 8082

JO - Industrial & Engineering Chemistry Product Research and Development

JF - Industrial & Engineering Chemistry Product Research and Development

SN - 0888-5885

IS - 25

ER -