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Nitrate And Phosphorus Removal From Synthetic Water And Their Coupling Effect Using Nanofiltration Membrane

Nitrate and phosphate contamination of groundwater is a growing problem both in developed and developing countries. Such contamination comes mainly from the intensive use of fertilizers in agriculture, improper discharges of industrial effluents and effluents from intensive farming. Nanofiltration (...

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Main Author: Aizadshah, Fatima Zahara
Format: Monograph
Language:English
Published: Universiti Sains Malaysia 2018
Subjects:
T Technology
TP Chemical Technology
Online Access:http://eprints.usm.my/53790/1/Nitrate%20And%20Phosphorus%20Removal%20From%20Synthetic%20Water%20And%20Their%20Coupling%20Effect%20Using%20Nanofiltration%20Membrane_Fatima%20Zahara%20Aizadshah_K4_2018.pdf
http://eprints.usm.my/53790/
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spelling my.usm.eprints.53790 http://eprints.usm.my/53790/ Nitrate And Phosphorus Removal From Synthetic Water And Their Coupling Effect Using Nanofiltration Membrane Aizadshah, Fatima Zahara T Technology TP Chemical Technology Nitrate and phosphate contamination of groundwater is a growing problem both in developed and developing countries. Such contamination comes mainly from the intensive use of fertilizers in agriculture, improper discharges of industrial effluents and effluents from intensive farming. Nanofiltration (NF) is chosen as the treatment for nitrate and phosphorus removal from contaminated waters. In this work, the removal of nitrates and phosphate from synthetic water using a commercial NF270 and NF90 membrane is studied. The efficiency of both membranes is evaluated based on the influence of transmembrane pressure, stirring speed and initial concentration of each solute on rejection and flux. NF90 shows higher rejection on nitrate (97.8%) while NF270 shows higher removal of phosphate (99.1%) which shows that NO3- removal is via diffusional control while PO43-removal is via charge repulsion control. The coupling effect of nitrate and phosphate was also investigated. It was proven that rejection of nitrate is greatly influenced by the presence of phosphate ions due to the electro-neutrality principle. Lastly, effect of stirring speed on flux and the mass transfer coefficient were also established for each membrane. NF270 shows linear increase in mass transfer coefficient against stirring speed for both individual nitrate and phosphate removal. This behavior of the NF270 membrane can be explained by relatively larger pore size of the NF270 membrane allowing more solution to pass through thus less concentration polarisation which describes the accumulation of the species being retained close to the surface of the membrane. Universiti Sains Malaysia 2018-06-01 Monograph NonPeerReviewed application/pdf en http://eprints.usm.my/53790/1/Nitrate%20And%20Phosphorus%20Removal%20From%20Synthetic%20Water%20And%20Their%20Coupling%20Effect%20Using%20Nanofiltration%20Membrane_Fatima%20Zahara%20Aizadshah_K4_2018.pdf Aizadshah, Fatima Zahara (2018) Nitrate And Phosphorus Removal From Synthetic Water And Their Coupling Effect Using Nanofiltration Membrane. Project Report. Universiti Sains Malaysia, Pusat Pengajian Kejuruteraan Kimia. (Submitted)
institution Universiti Sains Malaysia
building Hamzah Sendut Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Sains Malaysia
content_source USM Institutional Repository
url_provider http://eprints.usm.my/
language English
topic T Technology
TP Chemical Technology
spellingShingle T Technology
TP Chemical Technology
Aizadshah, Fatima Zahara
Nitrate And Phosphorus Removal From Synthetic Water And Their Coupling Effect Using Nanofiltration Membrane
description Nitrate and phosphate contamination of groundwater is a growing problem both in developed and developing countries. Such contamination comes mainly from the intensive use of fertilizers in agriculture, improper discharges of industrial effluents and effluents from intensive farming. Nanofiltration (NF) is chosen as the treatment for nitrate and phosphorus removal from contaminated waters. In this work, the removal of nitrates and phosphate from synthetic water using a commercial NF270 and NF90 membrane is studied. The efficiency of both membranes is evaluated based on the influence of transmembrane pressure, stirring speed and initial concentration of each solute on rejection and flux. NF90 shows higher rejection on nitrate (97.8%) while NF270 shows higher removal of phosphate (99.1%) which shows that NO3- removal is via diffusional control while PO43-removal is via charge repulsion control. The coupling effect of nitrate and phosphate was also investigated. It was proven that rejection of nitrate is greatly influenced by the presence of phosphate ions due to the electro-neutrality principle. Lastly, effect of stirring speed on flux and the mass transfer coefficient were also established for each membrane. NF270 shows linear increase in mass transfer coefficient against stirring speed for both individual nitrate and phosphate removal. This behavior of the NF270 membrane can be explained by relatively larger pore size of the NF270 membrane allowing more solution to pass through thus less concentration polarisation which describes the accumulation of the species being retained close to the surface of the membrane.
format Monograph
author Aizadshah, Fatima Zahara
author_facet Aizadshah, Fatima Zahara
author_sort Aizadshah, Fatima Zahara
title Nitrate And Phosphorus Removal From Synthetic Water And Their Coupling Effect Using Nanofiltration Membrane
title_short Nitrate And Phosphorus Removal From Synthetic Water And Their Coupling Effect Using Nanofiltration Membrane
title_full Nitrate And Phosphorus Removal From Synthetic Water And Their Coupling Effect Using Nanofiltration Membrane
title_fullStr Nitrate And Phosphorus Removal From Synthetic Water And Their Coupling Effect Using Nanofiltration Membrane
title_full_unstemmed Nitrate And Phosphorus Removal From Synthetic Water And Their Coupling Effect Using Nanofiltration Membrane
title_sort nitrate and phosphorus removal from synthetic water and their coupling effect using nanofiltration membrane
publisher Universiti Sains Malaysia
publishDate 2018
url http://eprints.usm.my/53790/1/Nitrate%20And%20Phosphorus%20Removal%20From%20Synthetic%20Water%20And%20Their%20Coupling%20Effect%20Using%20Nanofiltration%20Membrane_Fatima%20Zahara%20Aizadshah_K4_2018.pdf
http://eprints.usm.my/53790/
_version_ 1740826577727389696
score 13.211869

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