Synthesis, characterization and performance assessment of thin film composite nanofiltration (TFC-NF) membranes for treating dyes wastewater

In this study, the influence of dipping times of aqueous phase, reaction times in organic phase, and curing times on the preparation of thin film composite nanofiltration (TFC-NF) membranes were examined. Membranes were interfacially polymerized of m-phenelyne diamine and trimesoyl chloride on ultra...

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Main Author:	Norhidayah, Abdull
Format:	Thesis
Language:	English
Subjects:	TP 248.25 .M46 N6 2009 Norhidayah Abdull Nanofiltration Membrane separation
Online Access:	http://umt-ir.umt.edu.my:8080/jspui/bitstream/123456789/760/1/TP%20248.25%20.M46%20N6%202009%20abstract.pdf http://umt-ir.umt.edu.my:8080/jspui/bitstream/123456789/760/2/TP%20248.25%20.M46%20N6%202009.pdf%20fulltext.pdf
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spelling	my-umt-ir.-7602016-03-11T19:33:02Z Synthesis, characterization and performance assessment of thin film composite nanofiltration (TFC-NF) membranes for treating dyes wastewater Norhidayah, Abdull In this study, the influence of dipping times of aqueous phase, reaction times in organic phase, and curing times on the preparation of thin film composite nanofiltration (TFC-NF) membranes were examined. Membranes were interfacially polymerized of m-phenelyne diamine and trimesoyl chloride on ultrafiltration membrane and then were characterized by means of permeability coefficient, charged solutes separation and membrane morphologies. All membranes characteristics are in the range of NF membrane. SEM micrographs show that most of the membranes have typical composite structure. The prepared membranes within 3 min dipping time (TFC-NF-D3), 30 sec reaction time (TFC-NF-R30) and curing time (TFC-NF-C15) reveal the superior charged solute separation with the trade off between permeate fluxes and rejections. These membranes were further investigated to obtain a general understanding of the possibility of membrane to separate the dye-based wastewater. Results indicate membranes have good quality of permeates (up to about 95%) and higher fluxes (1.957 to 17.977 m3/m2.s.bar) as well as to those observed with commercial membranes. Among the dominant obstacles of NF membrane process is the declination of flux over time. Therefore, the effect of dye concentration (100 mg/L, 200 mg/L, 300 mg/L and 400 mg/L) and dye - salt mixture concentration (0.1 g/L, 1.0 g/L and 10.0 g/L at fixed dye concentration of 100 mg/L) on the flux decline behavior of dye wastewater were examined. The membrane properties and the percentages of flux decline (total flux decline, irreversible and reversible fouling, and concentration polarization) were investigated to explain the flux decline behavior. The highest dye and dye -salt mixture concentration exposes that the most accelerates of flux decline, but the lowest flux recovery for all membranes. Fluxes were sharply decreased at the initial stage of filtration. It is believes that the flux decline behavior at this stage is controlled by the irreversible fouling (pore blockage and pore constriction mechanisms). When more dyes accumulated on the membrane surface, the flux decline mechanism transited to cake formation mechanism (reversible fouling). At this stage, a steady state was achieved. Thus, it is demonstrates that most of the filtration process was dominated by a reversible fouling. Fakulti Sains dan Teknologi 2009-03 Thesis en http://hdl.handle.net/123456789/760 http://umt-ir.umt.edu.my:8080/jspui/bitstream/123456789/760/1/TP%20248.25%20.M46%20N6%202009%20abstract.pdf b82692f9c90e8f0c152966fbd7d035e1 http://umt-ir.umt.edu.my:8080/jspui/bitstream/123456789/760/2/TP%20248.25%20.M46%20N6%202009.pdf%20fulltext.pdf a4d81ca0fd8c7cfbf2ac8cec0be521af http://umt-ir.umt.edu.my:8080/jspui/bitstream/123456789/760/3/license.txt ecca7a0b60eabbf88d99eae3662e2d50 http://umt-ir.umt.edu.my:8080/jspui/bitstream/123456789/760/4/TP%20248.25%20.M46%20N6%202009%20abstract.pdf.txt c92653fee3fdb167535baaa7a84aa7fd http://umt-ir.umt.edu.my:8080/jspui/bitstream/123456789/760/5/TP%20248.25%20.M46%20N6%202009.pdf%20fulltext.pdf.txt 6652a8725347708ef330cf25d31f0d92 TP 248.25 .M46 N6 2009 Norhidayah Abdull Nanofiltration Membrane separation
institution	Universiti Malaysia Terengganu
collection	UMT Repository System
language	English
topic	TP 248.25 .M46 N6 2009 Norhidayah Abdull Nanofiltration Membrane separation
spellingShingle	TP 248.25 .M46 N6 2009 Norhidayah Abdull Nanofiltration Membrane separation Norhidayah, Abdull Synthesis, characterization and performance assessment of thin film composite nanofiltration (TFC-NF) membranes for treating dyes wastewater
description	In this study, the influence of dipping times of aqueous phase, reaction times in organic phase, and curing times on the preparation of thin film composite nanofiltration (TFC-NF) membranes were examined. Membranes were interfacially polymerized of m-phenelyne diamine and trimesoyl chloride on ultrafiltration membrane and then were characterized by means of permeability coefficient, charged solutes separation and membrane morphologies. All membranes characteristics are in the range of NF membrane. SEM micrographs show that most of the membranes have typical composite structure. The prepared membranes within 3 min dipping time (TFC-NF-D3), 30 sec reaction time (TFC-NF-R30) and curing time (TFC-NF-C15) reveal the superior charged solute separation with the trade off between permeate fluxes and rejections. These membranes were further investigated to obtain a general understanding of the possibility of membrane to separate the dye-based wastewater. Results indicate membranes have good quality of permeates (up to about 95%) and higher fluxes (1.957 to 17.977 m3/m2.s.bar) as well as to those observed with commercial membranes. Among the dominant obstacles of NF membrane process is the declination of flux over time. Therefore, the effect of dye concentration (100 mg/L, 200 mg/L, 300 mg/L and 400 mg/L) and dye - salt mixture concentration (0.1 g/L, 1.0 g/L and 10.0 g/L at fixed dye concentration of 100 mg/L) on the flux decline behavior of dye wastewater were examined. The membrane properties and the percentages of flux decline (total flux decline, irreversible and reversible fouling, and concentration polarization) were investigated to explain the flux decline behavior. The highest dye and dye -salt mixture concentration exposes that the most accelerates of flux decline, but the lowest flux recovery for all membranes. Fluxes were sharply decreased at the initial stage of filtration. It is believes that the flux decline behavior at this stage is controlled by the irreversible fouling (pore blockage and pore constriction mechanisms). When more dyes accumulated on the membrane surface, the flux decline mechanism transited to cake formation mechanism (reversible fouling). At this stage, a steady state was achieved. Thus, it is demonstrates that most of the filtration process was dominated by a reversible fouling.
format	Thesis
author	Norhidayah, Abdull
author_facet	Norhidayah, Abdull
author_sort	Norhidayah, Abdull
title	Synthesis, characterization and performance assessment of thin film composite nanofiltration (TFC-NF) membranes for treating dyes wastewater
title_short	Synthesis, characterization and performance assessment of thin film composite nanofiltration (TFC-NF) membranes for treating dyes wastewater
title_full	Synthesis, characterization and performance assessment of thin film composite nanofiltration (TFC-NF) membranes for treating dyes wastewater
title_fullStr	Synthesis, characterization and performance assessment of thin film composite nanofiltration (TFC-NF) membranes for treating dyes wastewater
title_full_unstemmed	Synthesis, characterization and performance assessment of thin film composite nanofiltration (TFC-NF) membranes for treating dyes wastewater
title_sort	synthesis, characterization and performance assessment of thin film composite nanofiltration (tfc-nf) membranes for treating dyes wastewater
granting_institution	Fakulti Sains dan Teknologi
url	http://umt-ir.umt.edu.my:8080/jspui/bitstream/123456789/760/1/TP%20248.25%20.M46%20N6%202009%20abstract.pdf http://umt-ir.umt.edu.my:8080/jspui/bitstream/123456789/760/2/TP%20248.25%20.M46%20N6%202009.pdf%20fulltext.pdf
_version_	1747835909674369024

Synthesis, characterization and performance assessment of thin film composite nanofiltration (TFC-NF) membranes for treating dyes wastewater

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