Zeta potential, effective membrane charge and donnan potential for TiO2 NF ceramic membrane
Other Title(s)
جهد زيتا و شحنة الغشاء الفعالة و جهد دونان لغشاء الترشيح السيراميكي النانوي
Joint Authors
al-Alawi, Hmad Faiq Hasan
al-Nuaymi, Amir Naji Ahmad
Husayn, Muzaffar Yaqub
Source
Issue
Vol. 24, Issue 9 (30 Sep. 2018), pp.21-40, 20 p.
Publisher
University of Baghdad College of Engineering
Publication Date
2018-09-30
Country of Publication
Iraq
No. of Pages
20
Main Subjects
Engineering & Technology Sciences (Multidisciplinary)
Abstract EN
Nanofiltration (NF) ceramic membrane have found increasing applications particularly in wastewater and water treatment.
In order to estimate and optimize the performance of NF membranes, the membrane should be characterized correctly in terms of their basic parameters such as effective pore radius (rp) and equivalent effective thickness as well as effective surface charge (σ^s), the effective charge density (X^m) and Donnan potential (ψ_D).
The impact of electrokinetic (zeta) potential on the membrane surface charge density, effective membrane charge density and Donnan potential at two different concentrations of the reference solutions 0.001, 0.01 M sodium chloride at various pH values from 3 to 9, and effective pore radius (rp) for nominal 0.9 nm ceramic TiO2 NF membrane were evaluated.
Experiments were conducted at cross flow (1.0 m/s) using Microelectrophoresis technique for measuring membrane zeta potential, effective pore radius, and Donnan steric pore model (DSPM).
The TiO2 membrane isoelectric point (net membrane charge equals zero) was found at pH of 3.7, 3.5 for 0.001 and 0.01 M NaCl respectively.
The results showed that the NF membrane zeta potential changes its sign from positive to negative after the isoelectric point.
The evaluated effective pore radius was found to be equal to 0.56 nm by using (DSPM) and the membrane equivalent effective thickness equals to (2×10-6 m).
American Psychological Association (APA)
al-Alawi, Hmad Faiq Hasan& al-Nuaymi, Amir Naji Ahmad& Husayn, Muzaffar Yaqub. 2018. Zeta potential, effective membrane charge and donnan potential for TiO2 NF ceramic membrane. Journal of Engineering،Vol. 24, no. 9, pp.21-40.
https://search.emarefa.net/detail/BIM-853365
Modern Language Association (MLA)
al-Alawi, Hmad Faiq Hasan…[et al.]. Zeta potential, effective membrane charge and donnan potential for TiO2 NF ceramic membrane. Journal of Engineering Vol. 24, no. 9 (Sep. 2018), pp.21-40.
https://search.emarefa.net/detail/BIM-853365
American Medical Association (AMA)
al-Alawi, Hmad Faiq Hasan& al-Nuaymi, Amir Naji Ahmad& Husayn, Muzaffar Yaqub. Zeta potential, effective membrane charge and donnan potential for TiO2 NF ceramic membrane. Journal of Engineering. 2018. Vol. 24, no. 9, pp.21-40.
https://search.emarefa.net/detail/BIM-853365
Data Type
Journal Articles
Language
English
Notes
Includes appendices : p. 36-40
Record ID
BIM-853365