Kinetic and thermodynamic analysis of Creosote degradation process under isothermal experimental conditions
Apstrakt
Isothermal degradation process of commercial Creosote was analyzed by the thermogravimetric (TG) technique in a nitrogen atmosphere, at four different operating temperatures (230, 250, 270 and 290 degrees C). The kinetic triplet [E-a , A and f()] and the thermodynamic parameters (H, Sand G) for investigated Creosote samples were calculated. It was found that two-parameter autocatalytic Sestak-Berggren (SB) kinetic model best describes the process, but in the form of accommodation function with phenomenological character. Applying the multiplicative factor, the true value of activation energy (E-true (a)) was calculated. The experimental density distribution function of the apparent activation energy values was evaluated from isoconversional kinetic analysis. Based of the characteristic shape of distribution curve, it was concluded that the isothermal degradation of Creosote represents a complex physico-chemical process, given the chemical structure of the studied system. It is assumed ...that the considered process probably includes primary and secondary (autocatalytic) pyrolysis reactions, together with various decomposition reactions and radicals recombination pathways. The objective of the presented work is the proof of principle of the pyrolysis-based thermo-chemical conversion technologies for the production of value-added chemicals from the complex organic compounds, which even include chemical contaminants (such as PAHs). Also, the present work allows us that by using a unified kinetic approach we can obtain a significant physico-chemical characteristics of the tested system, which can then be used in the procedure for the separation of organics from creosote-treated woods and creosote-contaminated soils. The significance of this research is to identify the global kinetic behavior of some target contaminant compounds for pyrolysis, which are primarily PAHs.
Ključne reči:
Thermodynamics / modeling / polycyclic aromatic hydrocarbons / statistics / transformationIzvor:
Journal of Environmental Science and Health. Part A: Toxic Hazardous Substances and Environmental Engineering, 2013, 48, 11, 1437-1449Finansiranje / projekti:
- Dinamika nelinearnih fizičkohemijskih i biohemijskih sistema sa modeliranjem i predviđanjem njihovih ponašanja pod neravnotežnim uslovima (RS-MESTD-Basic Research (BR or ON)-172015)
- Nove tehnologije za monitoring i zaštitu životnog okruženja od štetnih hemijskih supstanci i radijacionog opterećenja (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-43009)
DOI: 10.1080/10934529.2013.781902
ISSN: 1093-4529
PubMed: 23705620
WoS: 000319723300015
Scopus: 2-s2.0-84878845858
Kolekcije
Institucija/grupa
VinčaTY - JOUR AU - Janković, Bojan Ž. AU - Janković, Marija M. PY - 2013 UR - https://vinar.vin.bg.ac.rs/handle/123456789/5529 AB - Isothermal degradation process of commercial Creosote was analyzed by the thermogravimetric (TG) technique in a nitrogen atmosphere, at four different operating temperatures (230, 250, 270 and 290 degrees C). The kinetic triplet [E-a , A and f()] and the thermodynamic parameters (H, Sand G) for investigated Creosote samples were calculated. It was found that two-parameter autocatalytic Sestak-Berggren (SB) kinetic model best describes the process, but in the form of accommodation function with phenomenological character. Applying the multiplicative factor, the true value of activation energy (E-true (a)) was calculated. The experimental density distribution function of the apparent activation energy values was evaluated from isoconversional kinetic analysis. Based of the characteristic shape of distribution curve, it was concluded that the isothermal degradation of Creosote represents a complex physico-chemical process, given the chemical structure of the studied system. It is assumed that the considered process probably includes primary and secondary (autocatalytic) pyrolysis reactions, together with various decomposition reactions and radicals recombination pathways. The objective of the presented work is the proof of principle of the pyrolysis-based thermo-chemical conversion technologies for the production of value-added chemicals from the complex organic compounds, which even include chemical contaminants (such as PAHs). Also, the present work allows us that by using a unified kinetic approach we can obtain a significant physico-chemical characteristics of the tested system, which can then be used in the procedure for the separation of organics from creosote-treated woods and creosote-contaminated soils. The significance of this research is to identify the global kinetic behavior of some target contaminant compounds for pyrolysis, which are primarily PAHs. T2 - Journal of Environmental Science and Health. Part A: Toxic Hazardous Substances and Environmental Engineering T1 - Kinetic and thermodynamic analysis of Creosote degradation process under isothermal experimental conditions VL - 48 IS - 11 SP - 1437 EP - 1449 DO - 10.1080/10934529.2013.781902 ER -
@article{ author = "Janković, Bojan Ž. and Janković, Marija M.", year = "2013", abstract = "Isothermal degradation process of commercial Creosote was analyzed by the thermogravimetric (TG) technique in a nitrogen atmosphere, at four different operating temperatures (230, 250, 270 and 290 degrees C). The kinetic triplet [E-a , A and f()] and the thermodynamic parameters (H, Sand G) for investigated Creosote samples were calculated. It was found that two-parameter autocatalytic Sestak-Berggren (SB) kinetic model best describes the process, but in the form of accommodation function with phenomenological character. Applying the multiplicative factor, the true value of activation energy (E-true (a)) was calculated. The experimental density distribution function of the apparent activation energy values was evaluated from isoconversional kinetic analysis. Based of the characteristic shape of distribution curve, it was concluded that the isothermal degradation of Creosote represents a complex physico-chemical process, given the chemical structure of the studied system. It is assumed that the considered process probably includes primary and secondary (autocatalytic) pyrolysis reactions, together with various decomposition reactions and radicals recombination pathways. The objective of the presented work is the proof of principle of the pyrolysis-based thermo-chemical conversion technologies for the production of value-added chemicals from the complex organic compounds, which even include chemical contaminants (such as PAHs). Also, the present work allows us that by using a unified kinetic approach we can obtain a significant physico-chemical characteristics of the tested system, which can then be used in the procedure for the separation of organics from creosote-treated woods and creosote-contaminated soils. The significance of this research is to identify the global kinetic behavior of some target contaminant compounds for pyrolysis, which are primarily PAHs.", journal = "Journal of Environmental Science and Health. Part A: Toxic Hazardous Substances and Environmental Engineering", title = "Kinetic and thermodynamic analysis of Creosote degradation process under isothermal experimental conditions", volume = "48", number = "11", pages = "1437-1449", doi = "10.1080/10934529.2013.781902" }
Janković, B. Ž.,& Janković, M. M.. (2013). Kinetic and thermodynamic analysis of Creosote degradation process under isothermal experimental conditions. in Journal of Environmental Science and Health. Part A: Toxic Hazardous Substances and Environmental Engineering, 48(11), 1437-1449. https://doi.org/10.1080/10934529.2013.781902
Janković BŽ, Janković MM. Kinetic and thermodynamic analysis of Creosote degradation process under isothermal experimental conditions. in Journal of Environmental Science and Health. Part A: Toxic Hazardous Substances and Environmental Engineering. 2013;48(11):1437-1449. doi:10.1080/10934529.2013.781902 .
Janković, Bojan Ž., Janković, Marija M., "Kinetic and thermodynamic analysis of Creosote degradation process under isothermal experimental conditions" in Journal of Environmental Science and Health. Part A: Toxic Hazardous Substances and Environmental Engineering, 48, no. 11 (2013):1437-1449, https://doi.org/10.1080/10934529.2013.781902 . .