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ABOUT ME h5>
Currently Professor (Full) at
Universidad UTE, Department
Ingeniería Ambiental y Manejo de Riesgos Naturales
PUBLICATIONS h5>
2016
Viteri, Fausto; Salinas, Juan; Millera, Ángela; Bilbao, Rafael; Alzueta, María U
Pyrolysis of dimethyl carbonate: PAH formation Artículo de revista
En: Journal of Analytical and Applied Pyrolysis, vol. 122, pp. 524–530, 2016, ISSN: 01652370.
@article{Viteri2016a,
title = {Pyrolysis of dimethyl carbonate: PAH formation},
author = {Fausto Viteri and Juan Salinas and Ángela Millera and Rafael Bilbao and María U Alzueta},
doi = {10.1016/j.jaap.2016.09.011},
issn = {01652370},
year = {2016},
date = {2016-11-01},
journal = {Journal of Analytical and Applied Pyrolysis},
volume = {122},
pages = {524--530},
publisher = {Elsevier B.V.},
abstract = {The formation of the 16 polycyclic aromatic hydrocarbons (PAH), classified as priority pollutants by the Environmental Protection Agency (EPA), has been studied in the pyrolysis of dimethyl carbonate (DMC) at different reaction temperatures (1075–1475 K). PAH have been quantified by gas chromatography-mass spectrometry (GC–MS). The PAH speciation showed that C10-C16 PAH: NAPH, ACNY, PHEN, FANTH PYR, FLUO, ANTH, and some C20-C22 PAH: B[a]P, I[123-cd]P, and B[ghi]P, were present in high concentrations. The predominant PAH were NAPH and ACNY, and were found in significant concentrations in all phases analysed (gas phase, adsorbed on soot, and stuck on reactor walls). PAH were predominantly present in the gas phase, except at higher temperatures where most of the PAH were adsorbed on soot. The toxic potential, B[a]P-eq concentration, was determined according to the amount of PAH present in the different phases. The results showed that the highest B[a]P-eq concentration was found for the PAH adsorbed on soot corresponding to the experiment performed at 1375 K.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The formation of the 16 polycyclic aromatic hydrocarbons (PAH), classified as priority pollutants by the Environmental Protection Agency (EPA), has been studied in the pyrolysis of dimethyl carbonate (DMC) at different reaction temperatures (1075–1475 K). PAH have been quantified by gas chromatography-mass spectrometry (GC–MS). The PAH speciation showed that C10-C16 PAH: NAPH, ACNY, PHEN, FANTH PYR, FLUO, ANTH, and some C20-C22 PAH: B[a]P, I[123-cd]P, and B[ghi]P, were present in high concentrations. The predominant PAH were NAPH and ACNY, and were found in significant concentrations in all phases analysed (gas phase, adsorbed on soot, and stuck on reactor walls). PAH were predominantly present in the gas phase, except at higher temperatures where most of the PAH were adsorbed on soot. The toxic potential, B[a]P-eq concentration, was determined according to the amount of PAH present in the different phases. The results showed that the highest B[a]P-eq concentration was found for the PAH adsorbed on soot corresponding to the experiment performed at 1375 K.
Viteri, Fausto; Sánchez, Adrián; Millera, Ángela; Bilbao, Rafael; Alzueta, María U
Effect of the Presence of Hydrogen Sulfide on the Formation of Light Gases, Soot, and PAH during the Pyrolysis of Ethylene Artículo de revista
En: Energy and Fuels, vol. 30, no 11, pp. 9745–9751, 2016, ISSN: 15205029.
@article{Viteri2016d,
title = {Effect of the Presence of Hydrogen Sulfide on the Formation of Light Gases, Soot, and PAH during the Pyrolysis of Ethylene},
author = {Fausto Viteri and Adrián Sánchez and Ángela Millera and Rafael Bilbao and María U Alzueta},
url = {https://pubs.acs.org/sharingguidelines},
doi = {10.1021/acs.energyfuels.6b01271},
issn = {15205029},
year = {2016},
date = {2016-11-01},
journal = {Energy and Fuels},
volume = {30},
number = {11},
pages = {9745--9751},
publisher = {American Chemical Society},
abstract = {The formation of light gases, soot, and 16 polycyclic aromatic hydrocarbons (EPA-PAH), classified as priority pollutants by the United States Environmental Protection Agency (USEPA), has been studied during the pyrolysis of mixtures of ethylene with hydrogen sulfide (H2S) in a tubular flow reactor setup. The study was made using a constant concentration of ethylene and different inlet concentrations of H2S, in a temperature range from 1075 to 1475 K. The light gases produced were quantified by a chromatographic method. The soot amount formed was also quantified at the outlet of the reactor. The speciation of the individual EPA-PAH compounds was made by a combination of Soxhlet extraction, extract concentration by a rotary evaporator, and gas chromatography coupled to mass spectrometry. The present study shows that, under pyrolysis conditions, there is an effective interaction between H2S and hydrocarbons, forming significant amounts of CS2 and bonding sulfur to soot. The presence of H2S in the pyrolysis of ethylene contributes to slightly decrease the formation of soot and EPA-PAH, which indicates a positive effect of the sulfur compound under pyrolysis conditions.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The formation of light gases, soot, and 16 polycyclic aromatic hydrocarbons (EPA-PAH), classified as priority pollutants by the United States Environmental Protection Agency (USEPA), has been studied during the pyrolysis of mixtures of ethylene with hydrogen sulfide (H2S) in a tubular flow reactor setup. The study was made using a constant concentration of ethylene and different inlet concentrations of H2S, in a temperature range from 1075 to 1475 K. The light gases produced were quantified by a chromatographic method. The soot amount formed was also quantified at the outlet of the reactor. The speciation of the individual EPA-PAH compounds was made by a combination of Soxhlet extraction, extract concentration by a rotary evaporator, and gas chromatography coupled to mass spectrometry. The present study shows that, under pyrolysis conditions, there is an effective interaction between H2S and hydrocarbons, forming significant amounts of CS2 and bonding sulfur to soot. The presence of H2S in the pyrolysis of ethylene contributes to slightly decrease the formation of soot and EPA-PAH, which indicates a positive effect of the sulfur compound under pyrolysis conditions.
Viteri, Fausto; Baena, Cristian; Millera, Ángela; Bilbao, Rafael; Alzueta, María U
Formation of Polycyclic Aromatic Hydrocarbons in the Pyrolysis of 2-Methylfuran at Different Reaction Temperatures Artículo de revista
En: Combustion Science and Technology, vol. 188, no 4-5, pp. 611–622, 2016, ISSN: 1563521X.
@article{Viteri2016b,
title = {Formation of Polycyclic Aromatic Hydrocarbons in the Pyrolysis of 2-Methylfuran at Different Reaction Temperatures},
author = {Fausto Viteri and Cristian Baena and Ángela Millera and Rafael Bilbao and María U Alzueta},
doi = {10.1080/00102202.2016.1138827},
issn = {1563521X},
year = {2016},
date = {2016-05-01},
journal = {Combustion Science and Technology},
volume = {188},
number = {4-5},
pages = {611--622},
publisher = {Taylor and Francis Inc.},
abstract = {The formation of soot and 16 priority polycyclic aromatic hydrocarbons (PAH) has been studied during the pyrolysis of 2-methylfuran (2-MF), with a constant 2-MF inlet concentration at different reaction temperatures (975–1475 K) in a tubular flow reactor installation. Light gases and soot were measured at the reactor outlet. The concentration of the target PAH was determined according to their distribution in different phases (gas phase, adsorbed on soot, and stuck on reactor walls). This work revealed that PAH were mainly adsorbed on a soot surface. Only naphthalene was present in major amounts in the gas phase. The carcinogenic equivalence sum (KE) related to PAH concentration was also evaluated, and the highest value was found in the PAH collected from the soot and reactor walls at 1175 K. The results showed that, while more soot is formed by increasing the temperature, the PAH yield exhibits a maximum in the temperature range considered.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The formation of soot and 16 priority polycyclic aromatic hydrocarbons (PAH) has been studied during the pyrolysis of 2-methylfuran (2-MF), with a constant 2-MF inlet concentration at different reaction temperatures (975–1475 K) in a tubular flow reactor installation. Light gases and soot were measured at the reactor outlet. The concentration of the target PAH was determined according to their distribution in different phases (gas phase, adsorbed on soot, and stuck on reactor walls). This work revealed that PAH were mainly adsorbed on a soot surface. Only naphthalene was present in major amounts in the gas phase. The carcinogenic equivalence sum (KE) related to PAH concentration was also evaluated, and the highest value was found in the PAH collected from the soot and reactor walls at 1175 K. The results showed that, while more soot is formed by increasing the temperature, the PAH yield exhibits a maximum in the temperature range considered.