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Photocatalytic seawater desalination: the effect of metal loading in the hybrid tio2 and the effect of wavelength

Hybrid photocatalyst of Titanium Dioxide (TiO2) and biomass ash catalyst become an attractive alternative promoter for seawater desalination. The effect of metal loading in the seawater desalination via photocatalytic reaction at different wavelength light source was investigated. The hybrid catalys...

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Main Author: Afiq Hafizi, Azizi
Format: Undergraduates Project Papers
Language:English
Published: 2015
Subjects:
TP Chemical technology
Online Access:http://umpir.ump.edu.my/id/eprint/12659/1/Photocatalytic%20seawater%20desalination%20the%20effect%20of%20metal%20loading%20in%20the%20hybrid%20tio2%20and%20the%20effect%20of%20wavelength%20-%2024%20Pages.pdf
http://umpir.ump.edu.my/id/eprint/12659/
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spelling my.ump.umpir.126592022-02-16T16:01:30Z http://umpir.ump.edu.my/id/eprint/12659/ Photocatalytic seawater desalination: the effect of metal loading in the hybrid tio2 and the effect of wavelength Afiq Hafizi, Azizi TP Chemical technology Hybrid photocatalyst of Titanium Dioxide (TiO2) and biomass ash catalyst become an attractive alternative promoter for seawater desalination. The effect of metal loading in the seawater desalination via photocatalytic reaction at different wavelength light source was investigated. The hybrid catalyst with different weight ratio of TiO2, Oil palm fiber ash and metal loading either Nickel or Ferum was synthesized via wet impregnation. The catalysts were then characterized by using Scanning Electron Microscopy (SEM), Brunauer Emmett Teller (BET), X-ray Diffraction (XRD). The natural seawater were analysed for its pH, conductivity, turbidity, Biochemical Oxygen Demand (BOD) and Chemical Oxygen Demand (COD) prior the experiment. Then the catalyst was tested with the natural seawater using photocatalytic reactor with the weight ratio of 1:400 catalyst and seawater. The experiment was conducted for two hours in a mercury light exposure with the wavelength of 365 nm and 420 nm respectively. The pH, conductivity, turbidity, BOD and COD of the final product were analysed. It is found that there was an increment of the seawater quality in term of salt concentration, COD and BOD. By using 365 nm wavelength light and nickel loading catalyst, the salt concentration, COD and BOD reduced up to 4%, 88%, and 68% respectively. Meanwhile, the reduction of COD and BOD were achieved at 95% and 97% when 420 nm wavelength light and ferum loading catalyst were used. At 420 nm wave length, the salt concentration was increasing due to the distillation. It because at 420 nm wavelength the water was heated up to 100 ◦C and causing the distillation to dominates the process. Nickel loading catalyst perform at best when 365 nm light was used, while ferum loading work great when 420 nm light was used. It is because the performance of the metal loading was due to the different characterization of the metal band gap in which the smaller the band gap, the bigger the wavelength. Nickel has bigger band gap than ferum. It can be concluded that the addition of the metal loading improve the performance of the catalyst due to the different band characterization of the metal loading and changes of wavelength can affect the performance of the catalyst. 2015-07 Undergraduates Project Papers NonPeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/12659/1/Photocatalytic%20seawater%20desalination%20the%20effect%20of%20metal%20loading%20in%20the%20hybrid%20tio2%20and%20the%20effect%20of%20wavelength%20-%2024%20Pages.pdf Afiq Hafizi, Azizi (2015) Photocatalytic seawater desalination: the effect of metal loading in the hybrid tio2 and the effect of wavelength. Faculty of Chemical & Natural Resources Engineering, Universiti Malaysia Pahang.
institution Universiti Malaysia Pahang
building UMP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Pahang
content_source UMP Institutional Repository
url_provider http://umpir.ump.edu.my/
language English
topic TP Chemical technology
spellingShingle TP Chemical technology
Afiq Hafizi, Azizi
Photocatalytic seawater desalination: the effect of metal loading in the hybrid tio2 and the effect of wavelength
description Hybrid photocatalyst of Titanium Dioxide (TiO2) and biomass ash catalyst become an attractive alternative promoter for seawater desalination. The effect of metal loading in the seawater desalination via photocatalytic reaction at different wavelength light source was investigated. The hybrid catalyst with different weight ratio of TiO2, Oil palm fiber ash and metal loading either Nickel or Ferum was synthesized via wet impregnation. The catalysts were then characterized by using Scanning Electron Microscopy (SEM), Brunauer Emmett Teller (BET), X-ray Diffraction (XRD). The natural seawater were analysed for its pH, conductivity, turbidity, Biochemical Oxygen Demand (BOD) and Chemical Oxygen Demand (COD) prior the experiment. Then the catalyst was tested with the natural seawater using photocatalytic reactor with the weight ratio of 1:400 catalyst and seawater. The experiment was conducted for two hours in a mercury light exposure with the wavelength of 365 nm and 420 nm respectively. The pH, conductivity, turbidity, BOD and COD of the final product were analysed. It is found that there was an increment of the seawater quality in term of salt concentration, COD and BOD. By using 365 nm wavelength light and nickel loading catalyst, the salt concentration, COD and BOD reduced up to 4%, 88%, and 68% respectively. Meanwhile, the reduction of COD and BOD were achieved at 95% and 97% when 420 nm wavelength light and ferum loading catalyst were used. At 420 nm wave length, the salt concentration was increasing due to the distillation. It because at 420 nm wavelength the water was heated up to 100 ◦C and causing the distillation to dominates the process. Nickel loading catalyst perform at best when 365 nm light was used, while ferum loading work great when 420 nm light was used. It is because the performance of the metal loading was due to the different characterization of the metal band gap in which the smaller the band gap, the bigger the wavelength. Nickel has bigger band gap than ferum. It can be concluded that the addition of the metal loading improve the performance of the catalyst due to the different band characterization of the metal loading and changes of wavelength can affect the performance of the catalyst.
format Undergraduates Project Papers
author Afiq Hafizi, Azizi
author_facet Afiq Hafizi, Azizi
author_sort Afiq Hafizi, Azizi
title Photocatalytic seawater desalination: the effect of metal loading in the hybrid tio2 and the effect of wavelength
title_short Photocatalytic seawater desalination: the effect of metal loading in the hybrid tio2 and the effect of wavelength
title_full Photocatalytic seawater desalination: the effect of metal loading in the hybrid tio2 and the effect of wavelength
title_fullStr Photocatalytic seawater desalination: the effect of metal loading in the hybrid tio2 and the effect of wavelength
title_full_unstemmed Photocatalytic seawater desalination: the effect of metal loading in the hybrid tio2 and the effect of wavelength
title_sort photocatalytic seawater desalination: the effect of metal loading in the hybrid tio2 and the effect of wavelength
publishDate 2015
url http://umpir.ump.edu.my/id/eprint/12659/1/Photocatalytic%20seawater%20desalination%20the%20effect%20of%20metal%20loading%20in%20the%20hybrid%20tio2%20and%20the%20effect%20of%20wavelength%20-%2024%20Pages.pdf
http://umpir.ump.edu.my/id/eprint/12659/
_version_ 1725972821671149568
score 13.223943

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