Catalytic oxidative chemical treatment for the removal of elemental mercury on carbon steel (SAE J429) surface

In this study, mercury contaminated carbon steels was prepared using droplet and physisorption methods. Various oxidants were applied to oxidize the mercury element and the oxidized mercury and the iron leaching were analyzed using Atomic Absorption Spectrometer (AAS) for data collections. The effec...

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Main Author:	Khairuddin, Farah Ilyana
Format:	Thesis
Language:	English
Published:	2012
Subjects:	QD Chemistry
Online Access:	http://eprints.utm.my/id/eprint/33722/1/FarahIlyanaKhairuddinMFS2012.pdf
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id	my-utm-ep.33722
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spelling	my-utm-ep.337222018-04-30T13:09:52Z Catalytic oxidative chemical treatment for the removal of elemental mercury on carbon steel (SAE J429) surface 2012-02 Khairuddin, Farah Ilyana QD Chemistry In this study, mercury contaminated carbon steels was prepared using droplet and physisorption methods. Various oxidants were applied to oxidize the mercury element and the oxidized mercury and the iron leaching were analyzed using Atomic Absorption Spectrometer (AAS) for data collections. The effect of oxidant system of KI/I2, peracetic acid, different conditions of experiment namely heating, stirring, left at room temperature, the presence of catalysts and the addition of imidazoline based corrosion inhibitor were investigated. The experiment revealed the oxidant system of 1H2O2:1CH3COOH (peracetic acid) ratio as the best to remove 96.43% physisorbed Hg and 96% droplet Hg from carbon steel surfaces under ambient temperature and soaking for 5 hours. The total iron leached detected under the optimum condition from used carbon steel contaminated with physisorp Hg and droplet Hg were 21.45 ppm and 22.98 ppm respectively. Interestingly, the presence of Ru/Mn (25:75)/Al2O3 catalyst calcined at 1000°C with peracetic acid as oxidant could further remove 99% of Hg for CS-physisorbed-Hg and 98.71% for CS-droplet-Hg resulting in 19.71 ppm and 19.62 ppm respectively iron leached in 3 hours. FESEM illustrated the catalyst surface is covered with small and dispersed particles with undefined shape. From FESEMEDX analysis, Mn species were detected in all the catalysts tested. The X-Ray Diffraction (XRD) analysis revealed that the catalyst is crystalline and Mn species is believed to be the active species for the catalysts. Nitrogen Gas Adsorption (NA) analysis showed that both fresh and spent catalysts are of mesoporous material with Type IV isotherm and type H3 hysteresis loop. 2012-02 Thesis http://eprints.utm.my/id/eprint/33722/ http://eprints.utm.my/id/eprint/33722/1/FarahIlyanaKhairuddinMFS2012.pdf application/pdf en public masters Universiti Teknologi Malaysia, Faculty of Science Faculty of Science
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	QD Chemistry
spellingShingle	QD Chemistry Khairuddin, Farah Ilyana Catalytic oxidative chemical treatment for the removal of elemental mercury on carbon steel (SAE J429) surface
description	In this study, mercury contaminated carbon steels was prepared using droplet and physisorption methods. Various oxidants were applied to oxidize the mercury element and the oxidized mercury and the iron leaching were analyzed using Atomic Absorption Spectrometer (AAS) for data collections. The effect of oxidant system of KI/I2, peracetic acid, different conditions of experiment namely heating, stirring, left at room temperature, the presence of catalysts and the addition of imidazoline based corrosion inhibitor were investigated. The experiment revealed the oxidant system of 1H2O2:1CH3COOH (peracetic acid) ratio as the best to remove 96.43% physisorbed Hg and 96% droplet Hg from carbon steel surfaces under ambient temperature and soaking for 5 hours. The total iron leached detected under the optimum condition from used carbon steel contaminated with physisorp Hg and droplet Hg were 21.45 ppm and 22.98 ppm respectively. Interestingly, the presence of Ru/Mn (25:75)/Al2O3 catalyst calcined at 1000°C with peracetic acid as oxidant could further remove 99% of Hg for CS-physisorbed-Hg and 98.71% for CS-droplet-Hg resulting in 19.71 ppm and 19.62 ppm respectively iron leached in 3 hours. FESEM illustrated the catalyst surface is covered with small and dispersed particles with undefined shape. From FESEMEDX analysis, Mn species were detected in all the catalysts tested. The X-Ray Diffraction (XRD) analysis revealed that the catalyst is crystalline and Mn species is believed to be the active species for the catalysts. Nitrogen Gas Adsorption (NA) analysis showed that both fresh and spent catalysts are of mesoporous material with Type IV isotherm and type H3 hysteresis loop.
format	Thesis
qualification_level	Master's degree
author	Khairuddin, Farah Ilyana
author_facet	Khairuddin, Farah Ilyana
author_sort	Khairuddin, Farah Ilyana
title	Catalytic oxidative chemical treatment for the removal of elemental mercury on carbon steel (SAE J429) surface
title_short	Catalytic oxidative chemical treatment for the removal of elemental mercury on carbon steel (SAE J429) surface
title_full	Catalytic oxidative chemical treatment for the removal of elemental mercury on carbon steel (SAE J429) surface
title_fullStr	Catalytic oxidative chemical treatment for the removal of elemental mercury on carbon steel (SAE J429) surface
title_full_unstemmed	Catalytic oxidative chemical treatment for the removal of elemental mercury on carbon steel (SAE J429) surface
title_sort	catalytic oxidative chemical treatment for the removal of elemental mercury on carbon steel (sae j429) surface
granting_institution	Universiti Teknologi Malaysia, Faculty of Science
granting_department	Faculty of Science
publishDate	2012
url	http://eprints.utm.my/id/eprint/33722/1/FarahIlyanaKhairuddinMFS2012.pdf
_version_	1747816169140649984

Catalytic oxidative chemical treatment for the removal of elemental mercury on carbon steel (SAE J429) surface

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