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Permanent link (DOI): https://doi.org/10.7939/R3137V

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MIXED METAL OXIDE AND MIXED METAL OXIDE SUPPORTED -ION EXCHANGED ZEOLITE SORBENTS FOR HOT GAS DESULFURIZATION Open Access

Descriptions

Other title
Subject/Keyword
desulfurization, sorbent, regeneration, thermodynamic
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Lunawat, Sagar Narendra
Supervisor and department
Gupta, Rajender (Chemical and Materials Engineering)
Examining committee member and department
Narain, Ravin (Chemical and Materials Engineering)
Gupta, Rajender (Chemical and Materials Engineering)
Hashisho, Zaher ( Civil and Environmental Engineering )
Zeng, Hongbo (Chemical and Materials Engineering)
Department
Department of Chemical and Materials Engineering
Specialization

Date accepted
2012-09-12T15:41:30Z
Graduation date
2012-09
Degree
Master of Science
Degree level
Master's
Abstract
This study describes the evaluation of the mixed metal non-supported and supported ion exchanged sorbents for hot gas desulfurization capable of withstanding a wide temperature range and multiple sulfidation-regeneration cycles. Copper-cobalt, copper-cerium mixed metal oxide and mixed metal oxide supported- ions exchanged on natural zeolite (MMS-IZ) sorbents are studied in this work. Copper-cobalt mixed system is a good candidate for low temperature desulfurization while copper-cerium exhibits the high temperature stability and high performance. The reduced form of cerium oxide (CeOn) in copper-cerium reduced the H2S concentration to sub-ppmv level. The MMS-IZ sorbents also showed the high performance in desulfurization by surface interaction. Various combinations of these sorbents exhibited the high efficiency in H2S removal. The thermodynamic analysis of the single metal oxide systems and H2S concentration in equilibrium shows that the sulfidation is a strong function of temperature and can be calculated using Factsage 6.1 (GTT technologies).
Language
English
DOI
doi:10.7939/R3137V
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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