Noemí Gil-Lalaguna

@article{Noemi2020,

title = {Exploring the sustainable production of ammonia by recycling N and H in biological residues: evolution of fuel-N during glutamic acid gasification},

author = {Noemí Gil-Lalaguna and Zainab Afailal and María Aznar and Isabel Fonts},

doi = {10.1016/j.jclepro.2020.124417},

issn = {09596526},

year  = {2020},

date = {2020-10-01},

journal = {Journal of Cleaner Production},

pages = {124417},

publisher = {Elsevier BV},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Lavoie2019,

title = {Renewable antioxidant additive for biodiesel obtained from black liquor},

author = {Jean Michel Lavoie and Thierry Ghislain and Emmanuelle Bahl and Jesús Arauzo and Alberto Gonzalo and Noemí Gil-Lalaguna and José Luis Sánchez},

doi = {10.1016/j.fuel.2019.115689},

issn = {00162361},

year  = {2019},

date = {2019-10-01},

journal = {Fuel},

volume = {254},

pages = {115689},

publisher = {Elsevier Ltd},

abstract = {Black liquor obtained from semichemical pulping of barley straw was depolymerized in a stirred autoclave reactor, at temperature in the range of 250–300 °C while varying the amount of catalyst (zeolite Y). Three fractions were obtained from the depolymerized liquor: a fraction directly extracted from the liquid with isopropyl acetate (L$alpha$), a second one which contains the heaviest compounds precipitated from the liquid at pH 1 (L$beta$) and a third one obtained by extraction of the acidified liquid (L$gamma$). The three fractions were tested as antioxidant additives for biodiesel, blending them individually at a dosage of 1 wt%. The antioxidant activity was L$alpha$ > L$gamma$ > L$beta$. The L$alpha$ fraction showed the highest antioxidant activity, increasing the oxidation stability time over neat biodiesel from 150 to 250%. The phenolic volatile content of the fractions (measured by GC/MS) decreased in the same rank (L$alpha$ > L$gamma$ > L$beta$), so there doesn't seem to be correlation between the volatile content and the increase of antioxidant activity. Depolymerizarion temperature was the most influential parameter, showing a clear positive effect on the antioxidant activity for the three fractions.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Dueso2018,

title = {Performance and emissions of a diesel engine using sunflower biodiesel with a renewable antioxidant additive from bio-oil},

author = {Cristina Dueso and Mariano Muñoz and Francisco Moreno and Jorge Arroyo and Noemí Gil-Lalaguna and Ana Bautista and Alberto Gonzalo and José Luis Sánchez},

doi = {10.1016/j.fuel.2018.07.013},

issn = {00162361},

year  = {2018},

date = {2018-12-01},

journal = {Fuel},

volume = {234},

pages = {276--285},

publisher = {Elsevier Ltd},

abstract = {The aim of this study is to test the behaviour of sunflower biodiesel in a diesel engine after being treated with a natural antioxidant additive produced from bio-oil extraction (final dosage of bio-oil compounds in doped biodiesel of 1.9 wt%). The influence of this renewable additive in both the engine performance and the produced emissions was evaluated. Five more fuels were used for the sake of comparison: petroleum diesel, neat sunflower biodiesel without additives, commercial biodiesel, commercial B10 blend and another B10 blend prepared from petro-diesel and doped sunflower biodiesel. Brake power was found to be similar for the six fuels, while the brake specific fuel consumption and the brake thermal efficiency were higher for biodiesel fuels. Only slight differences (<1%) were observed between the doped biodiesel and the neat one, showing that the bio-oil based additive did not negatively affect the general performance of the engine. Regarding gas emissions (analysed according to the European Stationary Cycle), weighted average emissions of NOx and CO2 were higher for biodiesel fuels, while CO and opacity factor were lower in that case. Incorporating the bio-oil based additive reduced NOx emissions and smoke opacity by 3.0% and 4.4% compared with neat biodiesel, respectively, whilst CO and HC emissions increased by 0.7 and 14.3% respectively, values still remaining below those of diesel.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Moreira2018,

title = {Gasification of Charcoal in Air, Oxygen, and Steam Mixtures over a $gamma$-Al2O3 Fluidized Bed},

author = {Rui Moreira and Rui Vaz and António Portugal and Noemí Gil-Lalaguna and José Luis Sánchez and Fernando Bimbela},

url = {https://pubs.acs.org/sharingguidelines},

doi = {10.1021/acs.energyfuels.7b02257},

issn = {15205029},

year  = {2018},

date = {2018-01-01},

journal = {Energy and Fuels},

volume = {32},

number = {1},

pages = {406--415},

publisher = {American Chemical Society},

abstract = {Charcoal was gasified using air and oxygen as well as with mixtures of oxygen and steam, aiming to produce a gas stream with high hydrogen content. The effects of the equivalence ratio (ER) and steam-to-carbon ratio (S/C) on carbon conversion, producer gas yield, gas heating value, and composition as well as on the apparent energy efficiency (AEE) of the process were studied. The gasification experiments were performed in a laboratory-scale fluidized bed rig working at 1173 K and atmospheric pressure and using $gamma$-Al2O3 as bed material. Results showed that, on a N2-free basis, the composition of the producer gas obtained by gasification with air and pure oxygen were comparable when using the same ER. Furthermore, carbon fraction converted into gas improved when ER was increased from 0.25 up to 0.35, as well as when the S/C was increased to 0.625. The highest producer gas yield was obtained using ER = 0.35 and S/C = 0.625, while the highest hydrogen concentration in the produced gas was achieved using ER = 0.25 and S/C = 0.625. The highest hydrogen yield (0.412 N m3/kg charcoal) and the highest AEE (33.43%) were achieved by using S/C = 0.625 and ER = 0.3 (oxygen). The autothermal gasification of the charcoal was possible in the experimental rig used in this work by selecting ER = 0.3 and S/C = 0.5, allowing the production of a gas with a heating value of 8.3 MJ/Nm3 while reducing the carbon conversion into gas to 49.4 wt %.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Gil-Lalaguna2017,

title = {Obtaining biodiesel antioxidant additives by hydrothermal treatment of lignocellulosic bio-oil},

author = {Noemí Gil-Lalaguna and Ana Bautista and Alberto Gonzalo and José Luis Sánchez and Jesús Arauzo},

doi = {10.1016/j.fuproc.2017.05.020},

issn = {03783820},

year  = {2017},

date = {2017-11-01},

journal = {Fuel Processing Technology},

volume = {166},

pages = {1--7},

publisher = {Elsevier B.V.},

abstract = {The potential use of bio-oil as a small-dosage additive for improving biodiesel oxidation stability has been investigated in this work. Lignocellulosic bio-oil was high-pressure processed under different mixtures of water and organic solvents in order to promote depolymerization of the high molecular lignin still present in bio-oil and increase the content of phenolics, whose antioxidant potential is known. In fact, the antioxidant potential of bio-oil was found to noticeably enhance after the hydrothermal treatment. While the addition of 2% of crude bio-oil improved biodiesel oxidation stability by 135%, the same amount of hydrotreated bio-oil (water, 300 °C, 8.5 MPa) led to an oxidation stability improvement of 400%, which was related to the increase in the concentration of catechol, as well as to the modification of antioxidant properties of the pyrolytic lignin fraction.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}