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Deposition of fine iron oxide particles in tap water using direct current electrophoretic deposition (EPD) technique / Syahira Mohd Sharif

An investigation of using electrophoretic deposition (EPD) technique to deposit negatively charge fine iron oxide particles in tap water samples on a counter charge electrode (anode) was conducted. Characterizations of fine iron oxide particles in tap water from two different locations i.e. commerci...

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Main Author: Mohd Sharif, Syahira
Format: Thesis
Language:English
Published: 2016
Online Access:https://ir.uitm.edu.my/id/eprint/18483/2/TM_SYAHIRA%20MOHD%20SHARIF%20EH%2016_5.pdf
https://ir.uitm.edu.my/id/eprint/18483/
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spelling my.uitm.ir.184832021-12-01T07:43:50Z https://ir.uitm.edu.my/id/eprint/18483/ Deposition of fine iron oxide particles in tap water using direct current electrophoretic deposition (EPD) technique / Syahira Mohd Sharif Mohd Sharif, Syahira An investigation of using electrophoretic deposition (EPD) technique to deposit negatively charge fine iron oxide particles in tap water samples on a counter charge electrode (anode) was conducted. Characterizations of fine iron oxide particles in tap water from two different locations i.e. commercial and residential areas, were identified. After centrifuging the tap water samples, particle analyzer was used to analyze particles sizes and zeta potential values. The average particle sizes for supernatant region from the commercial and residential areas were 230 ± 22.30 and 260 ± 3.68 nm respectively. The zeta potential value from residential area was higher than commercial area, i.e. -42.27 ± 0.12 and -34.83 ± 0.23 mV, respectively. X-Ray Diffraction (XRD) analysis indicated that the tap water samples consisted of iron oxide polymorphs, namely goethite (α-FeOOH), hematite (α-Fe₂O₃), magnetite (Fe₃O₄у), and maghemite (y- Fe₂O₃),). During the removal of fine iron oxide particles using EPD technique, direct current (DC) voltage was varied from 5 to 25 V at a constant electrode distance of 30 mm. Higher deposition of fine iron oxide particles was achieved using the carbon fibre electrode with a percentage removal of (96% ± 1.42) than using the carbon plate electrode (58% ± 2.17) at 5 V due to the greater surface area of the carbon fibre electrode. The percentage of fine iron oxide particle deposition decreased as the applied voltage increased from 5 to 25 V. High amount of bubbles were formed on electrodes during EPD technique due to electrolysis of water as the applied voltage increased. The percentage removal of Fe from tap water samples from both areas was higher than the removal of Fe from the synthesized iron oxide suspension due to high zeta potential values in the water samples after centrifugation (supernatant). EPD techniques also manage to remove other element (arsenic) in tap water samples which had adsorbed onto fine iron oxide particles with percentage removal 26% ± 1.05. EDX analysis confirmed that fine iron oxide particles were deposited on anode electrode. The results proved that EPD was effective to remove fine iron oxide particles and other element such as arsenic in tap water. 2016 Thesis NonPeerReviewed text en https://ir.uitm.edu.my/id/eprint/18483/2/TM_SYAHIRA%20MOHD%20SHARIF%20EH%2016_5.pdf ID18483 Mohd Sharif, Syahira (2016) Deposition of fine iron oxide particles in tap water using direct current electrophoretic deposition (EPD) technique / Syahira Mohd Sharif. Masters thesis, thesis, Universiti Teknologi MARA.
institution Universiti Teknologi Mara
building Tun Abdul Razak Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Mara
content_source UiTM Institutional Repository
url_provider http://ir.uitm.edu.my/
language English
description An investigation of using electrophoretic deposition (EPD) technique to deposit negatively charge fine iron oxide particles in tap water samples on a counter charge electrode (anode) was conducted. Characterizations of fine iron oxide particles in tap water from two different locations i.e. commercial and residential areas, were identified. After centrifuging the tap water samples, particle analyzer was used to analyze particles sizes and zeta potential values. The average particle sizes for supernatant region from the commercial and residential areas were 230 ± 22.30 and 260 ± 3.68 nm respectively. The zeta potential value from residential area was higher than commercial area, i.e. -42.27 ± 0.12 and -34.83 ± 0.23 mV, respectively. X-Ray Diffraction (XRD) analysis indicated that the tap water samples consisted of iron oxide polymorphs, namely goethite (α-FeOOH), hematite (α-Fe₂O₃), magnetite (Fe₃O₄у), and maghemite (y- Fe₂O₃),). During the removal of fine iron oxide particles using EPD technique, direct current (DC) voltage was varied from 5 to 25 V at a constant electrode distance of 30 mm. Higher deposition of fine iron oxide particles was achieved using the carbon fibre electrode with a percentage removal of (96% ± 1.42) than using the carbon plate electrode (58% ± 2.17) at 5 V due to the greater surface area of the carbon fibre electrode. The percentage of fine iron oxide particle deposition decreased as the applied voltage increased from 5 to 25 V. High amount of bubbles were formed on electrodes during EPD technique due to electrolysis of water as the applied voltage increased. The percentage removal of Fe from tap water samples from both areas was higher than the removal of Fe from the synthesized iron oxide suspension due to high zeta potential values in the water samples after centrifugation (supernatant). EPD techniques also manage to remove other element (arsenic) in tap water samples which had adsorbed onto fine iron oxide particles with percentage removal 26% ± 1.05. EDX analysis confirmed that fine iron oxide particles were deposited on anode electrode. The results proved that EPD was effective to remove fine iron oxide particles and other element such as arsenic in tap water.
format Thesis
author Mohd Sharif, Syahira
spellingShingle Mohd Sharif, Syahira
Deposition of fine iron oxide particles in tap water using direct current electrophoretic deposition (EPD) technique / Syahira Mohd Sharif
author_facet Mohd Sharif, Syahira
author_sort Mohd Sharif, Syahira
title Deposition of fine iron oxide particles in tap water using direct current electrophoretic deposition (EPD) technique / Syahira Mohd Sharif
title_short Deposition of fine iron oxide particles in tap water using direct current electrophoretic deposition (EPD) technique / Syahira Mohd Sharif
title_full Deposition of fine iron oxide particles in tap water using direct current electrophoretic deposition (EPD) technique / Syahira Mohd Sharif
title_fullStr Deposition of fine iron oxide particles in tap water using direct current electrophoretic deposition (EPD) technique / Syahira Mohd Sharif
title_full_unstemmed Deposition of fine iron oxide particles in tap water using direct current electrophoretic deposition (EPD) technique / Syahira Mohd Sharif
title_sort deposition of fine iron oxide particles in tap water using direct current electrophoretic deposition (epd) technique / syahira mohd sharif
publishDate 2016
url https://ir.uitm.edu.my/id/eprint/18483/2/TM_SYAHIRA%20MOHD%20SHARIF%20EH%2016_5.pdf
https://ir.uitm.edu.my/id/eprint/18483/
_version_ 1718929439508660224
score 13.211869

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