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ABOUT ME
Currently Professor (Full) at
Universidad UTE, Department
Ingeniería Ambiental y Manejo de Riesgos Naturales
PUBLICATIONS
2025
Viteri, Fausto; Alexandrino, Katiuska; Millera, Ángela; Bilbao, Rafael; Alzueta, María U
Polycyclic aromatic hydrocarbons formed during the pyrolysis of dimethoxymethane (DMM). Comparison with other oxygenated additives Journal Article
In: Fuel, vol. 383, pp. 133750, 2025, ISSN: 0016-2361.
@article{viteri_polycyclic_2025,
title = {Polycyclic aromatic hydrocarbons formed during the pyrolysis of dimethoxymethane (DMM). Comparison with other oxygenated additives},
author = {Fausto Viteri and Katiuska Alexandrino and Ángela Millera and Rafael Bilbao and María U Alzueta},
url = {https://www.sciencedirect.com/science/article/pii/S0016236124028990},
doi = {10.1016/j.fuel.2024.133750},
issn = {0016-2361},
year = {2025},
date = {2025-03-01},
urldate = {2025-03-01},
journal = {Fuel},
volume = {383},
pages = {133750},
abstract = {The influence of the temperature (1075 – 1475 K) and inlet concentration of fuel (33,333 and 50,000 ppmv) on the formation of the 16 EPA-priority Polycyclic Aromatic Hydrocarbons (PAH) from the pyrolysis of dimethoxymethane (DMM) was analyzed. PAH were detected in different phases (gas phase, adsorbed on soot, and stuck on the reactor walls) and quantified by gas chromatography-mass spectrometry (GC–MS). Additionally, the toxicity of the PAH samples, expressed as B[a]P-eq, was analyzed in all experiments. A comparison with the results obtained from the pyrolysis of other oxygenated compounds was also performed and similar behaviors were observed. The main results showed that, at low temperatures, the highest concentrations of PAH were found in the gas phase, while at high temperatures were found on soot. For both inlet concentrations of DMM, the light PAH, such as naphthalene and acenaphthylene, were found in major concentrations, in all phases and temperatures. The heavy PAH, such as fluoranthene and pyrene, increased its concentration on soot at highest temperatures. The highest formation of soot was obtained at 1475 K and follows the trend: 2,5DMF < tert-butanol < 2MF < 2butanol < iso-butanol < 1-butanol < ethanol < DMC < DMM. The highest formation of PAH was at 1275 K with the tendency: tert-butanol < 2-butanol < 1-butanol < 2,5DMF < 2MF < iso-butanol < ethanol < DMC < DMM. The highest B[a]P-eq value was found in the pyrolysis of 2,5DMF, and the lowest in the pyrolysis of DMM.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The influence of the temperature (1075 – 1475 K) and inlet concentration of fuel (33,333 and 50,000 ppmv) on the formation of the 16 EPA-priority Polycyclic Aromatic Hydrocarbons (PAH) from the pyrolysis of dimethoxymethane (DMM) was analyzed. PAH were detected in different phases (gas phase, adsorbed on soot, and stuck on the reactor walls) and quantified by gas chromatography-mass spectrometry (GC–MS). Additionally, the toxicity of the PAH samples, expressed as B[a]P-eq, was analyzed in all experiments. A comparison with the results obtained from the pyrolysis of other oxygenated compounds was also performed and similar behaviors were observed. The main results showed that, at low temperatures, the highest concentrations of PAH were found in the gas phase, while at high temperatures were found on soot. For both inlet concentrations of DMM, the light PAH, such as naphthalene and acenaphthylene, were found in major concentrations, in all phases and temperatures. The heavy PAH, such as fluoranthene and pyrene, increased its concentration on soot at highest temperatures. The highest formation of soot was obtained at 1475 K and follows the trend: 2,5DMF < tert-butanol < 2MF < 2butanol < iso-butanol < 1-butanol < ethanol < DMC < DMM. The highest formation of PAH was at 1275 K with the tendency: tert-butanol < 2-butanol < 1-butanol < 2,5DMF < 2MF < iso-butanol < ethanol < DMC < DMM. The highest B[a]P-eq value was found in the pyrolysis of 2,5DMF, and the lowest in the pyrolysis of DMM.
2021
Adánez-Rubio, Iñaki; Fonts, Isabel; Blas, P; Viteri, Fausto; Gea, Gloria; Alzueta, María U
Exploratory study of polycyclic aromatic hydrocarbons occurrence and distribution in manure pyrolysis products Journal Article
In: Journal of Analytical and Applied Pyrolysis, vol. 155, pp. 105078, 2021, ISSN: 01652370.
@article{Adanez-Rubio2021,
title = {Exploratory study of polycyclic aromatic hydrocarbons occurrence and distribution in manure pyrolysis products},
author = {Iñaki Adánez-Rubio and Isabel Fonts and P Blas and Fausto Viteri and Gloria Gea and María U Alzueta},
url = {https://linkinghub.elsevier.com/retrieve/pii/S0165237021000644},
doi = {10.1016/j.jaap.2021.105078},
issn = {01652370},
year = {2021},
date = {2021-05-01},
journal = {Journal of Analytical and Applied Pyrolysis},
volume = {155},
pages = {105078},
publisher = {Elsevier},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
2019
Viteri, Fausto; López, A; Millera, Ángela; Bilbao, Rafael; Alzueta, María U
Influence of temperature and gas residence time on the formation of polycyclic aromatic hydrocarbons (PAH) during the pyrolysis of ethanol Journal Article
In: Fuel, vol. 236, pp. 820–828, 2019, ISSN: 00162361.
@article{Viteri2019a,
title = {Influence of temperature and gas residence time on the formation of polycyclic aromatic hydrocarbons (PAH) during the pyrolysis of ethanol},
author = {Fausto Viteri and A López and Ángela Millera and Rafael Bilbao and María U Alzueta},
doi = {10.1016/j.fuel.2018.09.061},
issn = {00162361},
year = {2019},
date = {2019-01-01},
journal = {Fuel},
volume = {236},
pages = {820--828},
publisher = {Elsevier Ltd},
abstract = {The effect of temperature and gas residence time on the formation of 16 priority PAH from the ethanol pyrolysis, in the 975–1475 K temperature range, has been evaluated. Soot was quantified by weight difference of the collection filter and light gases were measured by gas chromatography and microchromatography. The PAH quantification was done by gas chromatography–mass spectrometry (GC–MS). The toxicity of the effluent was determined by the B[a]P-eq value with the concentration of the PAH found during the experiments. The principal results show that the PAH concentration presents a maximum with the temperature, which is shifted to lower temperatures as the gas residence time increases. The PAH with the highest concentration are: NAPH, ACNY, PHEN, FANTH and PYR, and they are mainly present adsorbed on soot. The highest toxicity, B[a]P-eq, of the effluent was found for the highest residence time, tr(s) = 4168/T (K), particularly on soot.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The effect of temperature and gas residence time on the formation of 16 priority PAH from the ethanol pyrolysis, in the 975–1475 K temperature range, has been evaluated. Soot was quantified by weight difference of the collection filter and light gases were measured by gas chromatography and microchromatography. The PAH quantification was done by gas chromatography–mass spectrometry (GC–MS). The toxicity of the effluent was determined by the B[a]P-eq value with the concentration of the PAH found during the experiments. The principal results show that the PAH concentration presents a maximum with the temperature, which is shifted to lower temperatures as the gas residence time increases. The PAH with the highest concentration are: NAPH, ACNY, PHEN, FANTH and PYR, and they are mainly present adsorbed on soot. The highest toxicity, B[a]P-eq, of the effluent was found for the highest residence time, tr(s) = 4168/T (K), particularly on soot.
Viteri, Fausto; Pezo, Davinson; Millera, Ángela; Bilbao, Rafael; Alzueta, María U
In: 2019, ISSN: 10290397.
@article{Viteri2019b,
title = {Joint quantification of PAH and oxy-PAH from standard reference materials (urban dust and diesel particulate matter) and diesel soot surrogate by GC-MS},
author = {Fausto Viteri and Davinson Pezo and Ángela Millera and Rafael Bilbao and María U Alzueta},
url = {https://www.tandfonline.com/doi/abs/10.1080/03067319.2019.1691177},
doi = {10.1080/03067319.2019.1691177},
issn = {10290397},
year = {2019},
date = {2019-01-01},
booktitle = {International Journal of Environmental Analytical Chemistry},
publisher = {Taylor and Francis Ltd.},
abstract = {The combustion of fossil fuels produces pollutants such as soot, which consists of carbonaceous particles whose emission is regulated by environmental laws. Soot is mainly formed from polycyclic aromatic hydrocarbons (PAH), through different reaction ways and, once formed, it can adsorb PAH on its surface. These compounds have an environmental importance due to their carcinogenic and mutagenic potential. In the last years, the oxygenated derivatives of PAH (oxy-PAH) have also been considered as dangerous since they have been found to be mutagenic for bacterial and human cells. Therefore, the purpose of this work was to quantify simultaneously selected PAH and oxy-PAH from different samples of soot. The quantification method involves Soxhlet extraction and subsequent concentration by rotary evaporation that allows to recover the analysed compounds from soot samples. The PAH and oxy-PAH were identified and quantified, by a single injection, using a gas chromatograph-mass spectrometer (GC-MS). The method showed a good repeatability using a diesel soot surrogate test sample, Printex-U. The validation process showed that most of the compounds are recovered between the values established for the Standard Reference Materials analysed, 1650b and 1649b. The values of the mass fraction of the oxy-PAH obtained in this work showed, in general, a good match with those indicated in other studies.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The combustion of fossil fuels produces pollutants such as soot, which consists of carbonaceous particles whose emission is regulated by environmental laws. Soot is mainly formed from polycyclic aromatic hydrocarbons (PAH), through different reaction ways and, once formed, it can adsorb PAH on its surface. These compounds have an environmental importance due to their carcinogenic and mutagenic potential. In the last years, the oxygenated derivatives of PAH (oxy-PAH) have also been considered as dangerous since they have been found to be mutagenic for bacterial and human cells. Therefore, the purpose of this work was to quantify simultaneously selected PAH and oxy-PAH from different samples of soot. The quantification method involves Soxhlet extraction and subsequent concentration by rotary evaporation that allows to recover the analysed compounds from soot samples. The PAH and oxy-PAH were identified and quantified, by a single injection, using a gas chromatograph-mass spectrometer (GC-MS). The method showed a good repeatability using a diesel soot surrogate test sample, Printex-U. The validation process showed that most of the compounds are recovered between the values established for the Standard Reference Materials analysed, 1650b and 1649b. The values of the mass fraction of the oxy-PAH obtained in this work showed, in general, a good match with those indicated in other studies.
2017
Viteri, Fausto; Gracia, S; Millera, Ángela; Bilbao, Rafael; Alzueta, María U
Polycyclic aromatic hydrocarbons (PAHs) and soot formation in the pyrolysis of the butanol isomers Journal Article
In: Fuel, vol. 197, pp. 348–358, 2017, ISSN: 00162361.
@article{Viteri2017,
title = {Polycyclic aromatic hydrocarbons (PAHs) and soot formation in the pyrolysis of the butanol isomers},
author = {Fausto Viteri and S Gracia and Ángela Millera and Rafael Bilbao and María U Alzueta},
doi = {10.1016/j.fuel.2017.02.026},
issn = {00162361},
year = {2017},
date = {2017-06-01},
journal = {Fuel},
volume = {197},
pages = {348--358},
publisher = {Elsevier Ltd},
abstract = {The formation of polycyclic aromatic hydrocarbons (PAHs) and soot from the pyrolysis of the four butanol isomers: 1-butanol, 2-butanol, iso-butanol and tert-butanol, at three reaction temperatures (1275, 1375 and 1475 K) has been studied. The identification and quantification of the sixteen PAHs, classified by the Environmental Protection Agency (EPA) as priority pollutants, were done using the gas chromatography–mass spectrometry (GC–MS) technique. The soot formed was collected at the reactor outlet. Light gases formed were also quantified. The harmful potential of the PAHs through the benzo[a]pyrene equivalent, B[a]P-eq amount, has been evaluated. The main results show that the highest formation of light gases was obtained from the pyrolysis of iso-butanol at 1275 K. The formation of H2increases significantly as the temperature increases, following the Hydrogen abstraction carbon addition (HACA) route that leads to form PAHs which subsequently form soot. The tendency to soot formation, under the experimental conditions of the present study, is ranked as follows: tert-butanol, 2-butanol, 1-butanol and iso-butanol. The highest PAHs amount and the highest toxic potential, expressed as B[a]P-eq amount, were found in the pyrolysis of all butanol isomers at 1275 K.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The formation of polycyclic aromatic hydrocarbons (PAHs) and soot from the pyrolysis of the four butanol isomers: 1-butanol, 2-butanol, iso-butanol and tert-butanol, at three reaction temperatures (1275, 1375 and 1475 K) has been studied. The identification and quantification of the sixteen PAHs, classified by the Environmental Protection Agency (EPA) as priority pollutants, were done using the gas chromatography–mass spectrometry (GC–MS) technique. The soot formed was collected at the reactor outlet. Light gases formed were also quantified. The harmful potential of the PAHs through the benzo[a]pyrene equivalent, B[a]P-eq amount, has been evaluated. The main results show that the highest formation of light gases was obtained from the pyrolysis of iso-butanol at 1275 K. The formation of H2increases significantly as the temperature increases, following the Hydrogen abstraction carbon addition (HACA) route that leads to form PAHs which subsequently form soot. The tendency to soot formation, under the experimental conditions of the present study, is ranked as follows: tert-butanol, 2-butanol, 1-butanol and iso-butanol. The highest PAHs amount and the highest toxic potential, expressed as B[a]P-eq amount, were found in the pyrolysis of all butanol isomers at 1275 K.