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Abstract

A series of steps taken to determine a kinetic equation that describes hydrogenation of propene on nickel catalyst is presented in this study. Mixed factorial design approach, belongs to designing of experiments methods was used to plane experiments. The investigations showed that the method applied makes possible determination of the kinetic equation in a relatively fast and cheap manner since only a few measurement points is required. The equation obtained was verified experimentally and statistically. Both tests showed satisfactory precision of anticipated values of the process rate.
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Bibliography

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Ahmadigoltapeh, S., Mehranbod, N., Halimejani, H.Z., 2015. Propylene hydrogenation through structured and con- ventional catalyst beds: Experiment and modelling. J. Nat. Gas Sci. Eng., 27, 822–830. DOI: 10.1016/j.jngse.2015.09.030.
Brandao L., Fritsch D., Madeira LM., Mendes A.M., 2004. Kinetics of propylene hydrogenation on nanostructured palladium clusters. Chem. Eng. J., 103, 89–97. DOI: 10.1016/j.cej.2004.07.008.
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Özbay N., Yargıç A.Ş., Yarbay-Şahin R.Z., Önal E., 2013. Full factorial experimental design analysis of reactive dye removal by carbon adsorption. J. Chem., 234904. DOI: 10.1155/2013/234904.
Pachulski A., Schödel R., Claus P., 2012. Kinetics and reactor modeling of a Pd-Ag/Al2O3 catalyst during selective hydrogenation of ethyne. Appl. Catal., A, 445–446, 107–120. DOI: 10.1016/j.apcata.2012.08.018.
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Szukiewicz M., Chmiel-Szukiewicz E., Kaczmarski K., Szałek A., 2019. Dead zone for hydrogenation of propylene atalyst pellets. Open Chem., 17, 295–301. DOI: 10.1515/chem-2019-0037.
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Authors and Affiliations

Adrian Szałek
1
Mirosław Szukiewicz
1
Elżbieta Chmiel-Szukiewicz
1

  1. Rzeszów University of Technology, Faculty of Chemistry, al. Powstańców Warszawy 6, 35-959 Rzeszów, Poland
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Abstract

The large diversity of chemical substances present in air, water, or soil makes it necessary tostudy their mutual impact on the effectiveness of microbiological decomposition ofcontaminants. This publication presents the results of the studies aimed at evaluating the effect of two biogenic heavy metals - zinc and copper - on the phenol biodegradation by the Stenotrophomonas maltophilia KB2 strain. The tests were carried out for concentrations ofmetals significantly exceeding the legally permitted wastewater values: for zinc up to13.3 g·m -3, and copper up to 3.33 g·m -3. In the tested metal concentration range, phenol biodegradation by the S. maltophilia KB2 strain was not significantly influenced by theintroduced dose of zinc. While the presence of copper inhibited both biomass growth andsubstrate degradation. Kinetic data of metal and phenol mixtures were analyzed and very goodcorrelations were obtained for the proposed equations. An equation consistents with the Hanand Levenspiel model was proposed for the system S. maltophilia KB2-phenol-copper, whilean equation consistents with the Kai model for the system St. maltophilia KB2-phenol-zinc. The simultaneous presence of Zn and Cu ions in the culture resulted in a stronger inhibition ofphenol biodegradation.
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Authors and Affiliations

Agnieszka Gąszczak
1
ORCID: ORCID
Elżbieta Szczyrba
1
ORCID: ORCID
Anna Szczotka
1
ORCID: ORCID

  1. Polish Academy of Sciences, Institute of Chemical Engineering, Baltycka 5, 44-100 Gliwice, Poland

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