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## Oxidation of volatile organic contaminants

### Karol Jurczak

#### Abstract

The purpose of this work was to investigate the process of catalytic oxidation of volatile organic contaminants by the use of ozone in the gaseous phase. Toluene was used as a sample contaminant and cobalt and manganium ions supported on silica gel were used as the catalyst. Within the framework of this thesis, the influence of such parameters as inlet concentration of reactants and total volumetric flow rate of reactants and presence of the catalyst was examined. As a result of the performed experiments, following parameters were measured: degree of conversion of toluene, degree of mineralization of organic carbon, average reaction rate of toluene oxidation, average reaction rate of carbon dioxide synthesis. Ozone requirement in conducted experiments was determined as well. In the first part of this work the methods of volatile organic contaminants removal, such as: absorption, adsorption, combustion, membrane separation, catalytic oxidation and biological methods were presented, based on literature review. The properties of substances used in conducted experiments were described as well. In the experimental part of this work, the description of experimental setup and methodology of conducted tests were presented first. Subsequently, the results of performed oxidation experiments with the application of catalyst-impregnated and pure silica gel beds were presented. On the basis of analysis of experimental results, it was shown that the degree of conversion of toluene reached almost 100% regardless of the type of bed applied. This result is associated with low inlet concentration of toluene applied in the experiments in order to obtain high degree of mineralization of organic carbon. The degree of mineralization of organic carbon reached much higher values for the catalyst-impregnated bed (to 40%) compared to pure silica gel (to 17%) in the experiments conducted under similar conditions. With the increase of inlet concentration of toluene, the degree of mineralization decreased both for catalyst-impregnated bed and non-impregnated bed. In experiments performed, the average reaction rate of toluene oxidation increased with the increase of inlet concentration of toluene, which was mainly attributed to almost total conversion of toluene and limiting the process by reagents supply rate into the reactor. This effect was observed for both types of bed applied. The value of average reaction rate of carbon dioxide synthesis increased with the increase of both the volumetric flow rate and inlet concentration of toluene. Depending on the type of bed applied different values of the carbon dioxide formation rate was observed. In the case of catalyst impregnated silica gel the rate of carbon dioxide formation was 2,5-fold greater than that observed in
Record ID
WUT13eb2c79723144d7b16d5f1477e74960
Diploma type
Master of Science
Author
Karol Jurczak (FCPE) Karol Jurczak,, Faculty of Chemical and Process Engineering (FCPE)
Title in Polish
Utlenianie lotnych zanieczyszczeń organicznych
Supervisor
Piotr M. Machniewski (FCPE/DPKT) Piotr M. Machniewski,, Department of Process Kinetics and Thermodynamics (FCPE/DPKT)Faculty of Chemical and Process Engineering (FCPE)
Certifying unit
Faculty of Chemical and Process Engineering (FCPE)
Affiliation unit
Department of Process Kinetics and Thermodynamics (FCPE/DPKT)
Study subject / specialization
, Inżynieria Chemiczna i Procesowa
Language
(pl) Polish
Status
Finished
Defense Date
27-06-2012
Issue date (year)
2012
Pages
84
Internal identifier
DICHP-2128
Reviewers
Tomasz Ciach (FCPE/DBBE) Tomasz Ciach,, Department of Biotechnology and Bioprocess Engineering (FCPE/DBBE)Faculty of Chemical and Process Engineering (FCPE) Piotr M. Machniewski (FCPE/DPKT) Piotr M. Machniewski,, Department of Process Kinetics and Thermodynamics (FCPE/DPKT)Faculty of Chemical and Process Engineering (FCPE)
Keywords in Polish
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Keywords in English
-
Abstract in Polish
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Karol Jurczak - praca magisterska.pdf
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Identyfikator pracy APD: 2848

Uniform Resource Identifier
https://repo.pw.edu.pl/info/master/WUT13eb2c79723144d7b16d5f1477e74960/
URN
urn:pw-repo:WUT13eb2c79723144d7b16d5f1477e74960

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