Characterization of polyvinylidene fluoride hollow fiber membrane with titanium dioxide for water treatment

Membrane filtration system is one of the effective ways to remove micro-pollutants such as natural organic matter (NOM) in water treatment process. The surface of the membrane is, however, easily fouled by the deposition of NOM, thereby decreasing flux and separation performances. Thus, in this stud...

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Main Author:	Yahaya, Muhammad Nabil Fikri
Format:	Thesis
Language:	English
Published:	2016
Subjects:	TA Engineering (General) Civil engineering (General)
Online Access:	http://eprints.utm.my/id/eprint/78789/1/MuhammadNabilFikriMFKA2016.pdf
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spelling	my-utm-ep.787892018-09-17T04:12:47Z Characterization of polyvinylidene fluoride hollow fiber membrane with titanium dioxide for water treatment 2016-06 Yahaya, Muhammad Nabil Fikri TA Engineering (General). Civil engineering (General) Membrane filtration system is one of the effective ways to remove micro-pollutants such as natural organic matter (NOM) in water treatment process. The surface of the membrane is, however, easily fouled by the deposition of NOM, thereby decreasing flux and separation performances. Thus, in this study, a series of polyvinylidene fluoride/titanium dioxide (PVDF/TiO2) hollow fiber membranes with different TiO2 loadings ranging from 0-3 wt.% were prepared via phase inversion method. The result shows that morphology of membrane layer becomes denser and thicker with the addition of TiO2. The increase of TiO2 loadings ranging from 0 to 2 wt.% resulted in the increase of membrane pore size from 142 to 155 nm with increase surface roughness from 20.2 to 23.98 nm. However with further increase of TiO2 loading the pore size and surface roughness decreased to 152 and 19.33 nm respectively. The mechanical strength of membrane showed slight improvement from 3.01 MPa to 3.41 MPa as TiO2 loading increased from 0 to 2 wt.% before reducing to 3.06 MPa with further increase of 3 wt.% TiO2. Water contact angle demonstrated that with increase TiO2 loading from 0 to 2 wt.% the contact angle was lowered slightly from 79o to 74o. At 2 wt.% TiO2 loading, the highest peak values achieved were 37.86 L/m2h for polymer organic solution flux and 39.04 L/m2h for pure water flux. Membrane with 2 wt.% of TiO2 loadings gives the highest rejection for all molecular weights of PVP. 14 % flux reduction were achieved at 2 wt.% TiO2 loadings for pure water flux after organic polymer rejection test from 38.64 L/m2h to 33.11 L/m2h. Based on this study, it was found that membranes with 2 wt.% addition of TiO2 were excellent in mitigating fouling particularly in reducing fouling resistance and increasing the rate of rejection. 2016-06 Thesis http://eprints.utm.my/id/eprint/78789/ http://eprints.utm.my/id/eprint/78789/1/MuhammadNabilFikriMFKA2016.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:106438 masters Universiti Teknologi Malaysia, Faculty of Civil Engineering Faculty of Civil Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TA Engineering (General) Civil engineering (General)
spellingShingle	TA Engineering (General) Civil engineering (General) Yahaya, Muhammad Nabil Fikri Characterization of polyvinylidene fluoride hollow fiber membrane with titanium dioxide for water treatment
description	Membrane filtration system is one of the effective ways to remove micro-pollutants such as natural organic matter (NOM) in water treatment process. The surface of the membrane is, however, easily fouled by the deposition of NOM, thereby decreasing flux and separation performances. Thus, in this study, a series of polyvinylidene fluoride/titanium dioxide (PVDF/TiO2) hollow fiber membranes with different TiO2 loadings ranging from 0-3 wt.% were prepared via phase inversion method. The result shows that morphology of membrane layer becomes denser and thicker with the addition of TiO2. The increase of TiO2 loadings ranging from 0 to 2 wt.% resulted in the increase of membrane pore size from 142 to 155 nm with increase surface roughness from 20.2 to 23.98 nm. However with further increase of TiO2 loading the pore size and surface roughness decreased to 152 and 19.33 nm respectively. The mechanical strength of membrane showed slight improvement from 3.01 MPa to 3.41 MPa as TiO2 loading increased from 0 to 2 wt.% before reducing to 3.06 MPa with further increase of 3 wt.% TiO2. Water contact angle demonstrated that with increase TiO2 loading from 0 to 2 wt.% the contact angle was lowered slightly from 79o to 74o. At 2 wt.% TiO2 loading, the highest peak values achieved were 37.86 L/m2h for polymer organic solution flux and 39.04 L/m2h for pure water flux. Membrane with 2 wt.% of TiO2 loadings gives the highest rejection for all molecular weights of PVP. 14 % flux reduction were achieved at 2 wt.% TiO2 loadings for pure water flux after organic polymer rejection test from 38.64 L/m2h to 33.11 L/m2h. Based on this study, it was found that membranes with 2 wt.% addition of TiO2 were excellent in mitigating fouling particularly in reducing fouling resistance and increasing the rate of rejection.
format	Thesis
qualification_level	Master's degree
author	Yahaya, Muhammad Nabil Fikri
author_facet	Yahaya, Muhammad Nabil Fikri
author_sort	Yahaya, Muhammad Nabil Fikri
title	Characterization of polyvinylidene fluoride hollow fiber membrane with titanium dioxide for water treatment
title_short	Characterization of polyvinylidene fluoride hollow fiber membrane with titanium dioxide for water treatment
title_full	Characterization of polyvinylidene fluoride hollow fiber membrane with titanium dioxide for water treatment
title_fullStr	Characterization of polyvinylidene fluoride hollow fiber membrane with titanium dioxide for water treatment
title_full_unstemmed	Characterization of polyvinylidene fluoride hollow fiber membrane with titanium dioxide for water treatment
title_sort	characterization of polyvinylidene fluoride hollow fiber membrane with titanium dioxide for water treatment
granting_institution	Universiti Teknologi Malaysia, Faculty of Civil Engineering
granting_department	Faculty of Civil Engineering
publishDate	2016
url	http://eprints.utm.my/id/eprint/78789/1/MuhammadNabilFikriMFKA2016.pdf
_version_	1747818071693721600

Characterization of polyvinylidene fluoride hollow fiber membrane with titanium dioxide for water treatment

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