Call:
Email: jlsance@unizar.es
Address:
ABOUT ME
Research Interests
Biomass gasification & pyrolysis, biodiesel production, biodiesel oxidation stability, lignin valorization
PUBLICATIONS
2021
Moreira, Rui; Bimbela, Fernando; Gil-Lalaguna, Noemí; Sánchez, José Luis; Portugal, António
Clean syngas production by gasification of lignocellulosic char: State of the art and future prospects Journal Article
In: Journal of Industrial and Engineering Chemistry, vol. 101, pp. 1–20, 2021, ISSN: 22345957.
@article{Moreira2021b,
title = {Clean syngas production by gasification of lignocellulosic char: State of the art and future prospects},
author = {Rui Moreira and Fernando Bimbela and Noemí Gil-Lalaguna and José Luis Sánchez and António Portugal},
doi = {10.1016/j.jiec.2021.05.040},
issn = {22345957},
year = {2021},
date = {2021-01-01},
journal = {Journal of Industrial and Engineering Chemistry},
volume = {101},
pages = {1--20},
abstract = {Using lignocellulosic char instead of the original biomass avoids the need for costly cleaning and conditioning stages of the producer gasification gas. However, lignocellulosic char gasification has been less extensively studied than gasification of lignocellulosic biomass, and a review of published works on this topic was missing. In this review the present status of char gasification technologies and their future prospects are critically discussed, including possible research opportunities. To date, most studies on char gasification have been performed in thermogravimetric analyzers (TGA) or TGA-like experimental setups. The major setback of TGA and TGA-like equipment is that they do not mimic the actual reaction conditions occurring in gasification reactors, which impedes a direct extrapolation of the findings during the scale-up of different gasification technologies. For this reason, in this literature review focus was put on studies undertaken in industrially relevant reactors, both in batch and continuous configurations. Overall, char gasification can be deemed a valid alternative for clean syngas production, contributing to an integral valorization of lignocellulosic residues within different biorefinery schemes. Of these, process intensification by microwave heating offers interesting opportunities for research and scaling-up, though efforts must be directed toward developing continuous microwave-assisted gasification processes.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Using lignocellulosic char instead of the original biomass avoids the need for costly cleaning and conditioning stages of the producer gasification gas. However, lignocellulosic char gasification has been less extensively studied than gasification of lignocellulosic biomass, and a review of published works on this topic was missing. In this review the present status of char gasification technologies and their future prospects are critically discussed, including possible research opportunities. To date, most studies on char gasification have been performed in thermogravimetric analyzers (TGA) or TGA-like experimental setups. The major setback of TGA and TGA-like equipment is that they do not mimic the actual reaction conditions occurring in gasification reactors, which impedes a direct extrapolation of the findings during the scale-up of different gasification technologies. For this reason, in this literature review focus was put on studies undertaken in industrially relevant reactors, both in batch and continuous configurations. Overall, char gasification can be deemed a valid alternative for clean syngas production, contributing to an integral valorization of lignocellulosic residues within different biorefinery schemes. Of these, process intensification by microwave heating offers interesting opportunities for research and scaling-up, though efforts must be directed toward developing continuous microwave-assisted gasification processes.
2019
Plaza, Daniel; Artigas, Julia; Ábrego, Javier; Gonzalo, Alberto; Sánchez, José Luis; Dro, Augustin Diomandé; Richardson, Yohan
Design and operation of a small-scale carbonization kiln for cashew nutshell valorization in Burkina Faso Journal Article
In: Energy for Sustainable Development, vol. 53, pp. 71–80, 2019, ISSN: 23524669.
@article{Plaza2019,
title = {Design and operation of a small-scale carbonization kiln for cashew nutshell valorization in Burkina Faso},
author = {Daniel Plaza and Julia Artigas and Javier Ábrego and Alberto Gonzalo and José Luis Sánchez and Augustin Diomandé Dro and Yohan Richardson},
doi = {10.1016/j.esd.2019.10.005},
issn = {23524669},
year = {2019},
date = {2019-12-01},
journal = {Energy for Sustainable Development},
volume = {53},
pages = {71--80},
publisher = {Elsevier B.V.},
abstract = {This paper describes the process of planning, design, building and first operation tests of a carbonization reactor for the valorization of cashew nutshells, obtained as byproduct from small-scale cashew cultivation and processing in Bobo-Dioulasso, Burkina Faso. The main technical requirements for the reactor were: low cost and ease of construction, robustness, autothermal operation, no need for pre or post-treatments for feedstock and products, and readily useable product fractions in a local scale. Design modifications are discussed and justified. Characterization of the raw material, data from the first successful operational tests, as well as product distribution and characterization, are presented. This carbonization prototype allows for the sustainable valorization of an otherwise problematic biomass residue, creating added-value products that would enhance the economic profitability of local processors. The use of the main charcoal product as a fuel substitute for household cooking is preliminarily assessed, and the recovery of potentially valuable cashew nutshell liquid (CNSL) is accomplished.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
This paper describes the process of planning, design, building and first operation tests of a carbonization reactor for the valorization of cashew nutshells, obtained as byproduct from small-scale cashew cultivation and processing in Bobo-Dioulasso, Burkina Faso. The main technical requirements for the reactor were: low cost and ease of construction, robustness, autothermal operation, no need for pre or post-treatments for feedstock and products, and readily useable product fractions in a local scale. Design modifications are discussed and justified. Characterization of the raw material, data from the first successful operational tests, as well as product distribution and characterization, are presented. This carbonization prototype allows for the sustainable valorization of an otherwise problematic biomass residue, creating added-value products that would enhance the economic profitability of local processors. The use of the main charcoal product as a fuel substitute for household cooking is preliminarily assessed, and the recovery of potentially valuable cashew nutshell liquid (CNSL) is accomplished.
Lavoie, Jean Michel; Ghislain, Thierry; Bahl, Emmanuelle; Arauzo, Jesús; Gonzalo, Alberto; Gil-Lalaguna, Noemí; Sánchez, José Luis
Renewable antioxidant additive for biodiesel obtained from black liquor Journal Article
In: Fuel, vol. 254, pp. 115689, 2019, ISSN: 00162361.
@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}
}
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.
Moreira, Rui; Moral, Ainara; Bimbela, Fernando; Portugal, António; Ferreira, Abel; Sánchez, José Luis; Gandía, Luis M
Syngas production via catalytic oxidative steam reforming of glycerol using a Co/Al coprecipitated catalyst and different bed fillers Journal Article
In: Fuel Processing Technology, vol. 189, pp. 120–133, 2019, ISSN: 03783820.
@article{Moreira2019,
title = {Syngas production via catalytic oxidative steam reforming of glycerol using a Co/Al coprecipitated catalyst and different bed fillers},
author = {Rui Moreira and Ainara Moral and Fernando Bimbela and António Portugal and Abel Ferreira and José Luis Sánchez and Luis M Gandía},
doi = {10.1016/j.fuproc.2019.02.014},
issn = {03783820},
year = {2019},
date = {2019-06-01},
journal = {Fuel Processing Technology},
volume = {189},
pages = {120--133},
publisher = {Elsevier B.V.},
abstract = {Syngas production has been investigated via oxidative steam reforming of concentrated glycerol aqueous solutions (Steam-to-Carbon molar ratio = 4 and 6 vol% O2 in N2). Results obtained using different (bulk) bed materials (SiO2, SiC and $gamma$-Al2O3) were compared with results achieved while using a cobalt aluminate catalyst prepared by coprecipitation dispersed in each of those same bed fillers. The effects on conversion and gas production of the filler bed material, activation temperature (1023 K, 1073 K and 1123 K) and reaction temperature (823 K, 923 K and 1023 K) were studied, as well as the catalyst reuse (at 1023 K) to assess its performance after regeneration. High glycerol conversion levels (above 80%) were attained at 1023 K without the catalyst. The main gaseous products were H2, CO, CO2 and CH4. Using a bed of commercial $gamma$-Al2O3, around 90% of the C fed into the reactor could be converted into gaseous products, yielding syngas with H2/CO molar ratio close to 1. In what concerns the use of the Co aluminate catalyst in the oxidative steam reforming of glycerol, very high overall conversion levels (above 90% in all cases) were achieved, as well as significantly higher H2/CO molar ratios (within the 2.0–2.5 range). The Co catalyst helped in effectively converting approximately 90% of the glycerol in the feed into product gases at temperatures as low as 823 K, and up to 94% of overall C conversion to gas could be achieved at 1023 K. Higher activation or reforming reaction temperatures did not improve the catalyst performance, the glycerol conversion or gas production. The catalyst could be effectively used during 20 h on stream in four consecutive reaction/regeneration cycles. Catalyst deactivation by encapsulating carbon caused drastic changes in the catalyst structure, which evolved into a core-shell configuration when deactivated. Upon regeneration by air oxidation and subsequent activation, the catalyst recovered its original structure and initial activity. These new insights allowed to propose the use of a pre-reforming step over relatively inexpensive bulk bed materials, where thermal decomposition of glycerol processes dominate followed by the catalytic oxidative steam reforming, to obtain high syngas production at moderate conditions (823 K).},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Syngas production has been investigated via oxidative steam reforming of concentrated glycerol aqueous solutions (Steam-to-Carbon molar ratio = 4 and 6 vol% O2 in N2). Results obtained using different (bulk) bed materials (SiO2, SiC and $gamma$-Al2O3) were compared with results achieved while using a cobalt aluminate catalyst prepared by coprecipitation dispersed in each of those same bed fillers. The effects on conversion and gas production of the filler bed material, activation temperature (1023 K, 1073 K and 1123 K) and reaction temperature (823 K, 923 K and 1023 K) were studied, as well as the catalyst reuse (at 1023 K) to assess its performance after regeneration. High glycerol conversion levels (above 80%) were attained at 1023 K without the catalyst. The main gaseous products were H2, CO, CO2 and CH4. Using a bed of commercial $gamma$-Al2O3, around 90% of the C fed into the reactor could be converted into gaseous products, yielding syngas with H2/CO molar ratio close to 1. In what concerns the use of the Co aluminate catalyst in the oxidative steam reforming of glycerol, very high overall conversion levels (above 90% in all cases) were achieved, as well as significantly higher H2/CO molar ratios (within the 2.0–2.5 range). The Co catalyst helped in effectively converting approximately 90% of the glycerol in the feed into product gases at temperatures as low as 823 K, and up to 94% of overall C conversion to gas could be achieved at 1023 K. Higher activation or reforming reaction temperatures did not improve the catalyst performance, the glycerol conversion or gas production. The catalyst could be effectively used during 20 h on stream in four consecutive reaction/regeneration cycles. Catalyst deactivation by encapsulating carbon caused drastic changes in the catalyst structure, which evolved into a core-shell configuration when deactivated. Upon regeneration by air oxidation and subsequent activation, the catalyst recovered its original structure and initial activity. These new insights allowed to propose the use of a pre-reforming step over relatively inexpensive bulk bed materials, where thermal decomposition of glycerol processes dominate followed by the catalytic oxidative steam reforming, to obtain high syngas production at moderate conditions (823 K).
2018
Dueso, Cristina; Muñoz, Mariano; Moreno, Francisco; Arroyo, Jorge; Gil-Lalaguna, Noemí; Bautista, Ana; Gonzalo, Alberto; Sánchez, José Luis
Performance and emissions of a diesel engine using sunflower biodiesel with a renewable antioxidant additive from bio-oil Journal Article
In: Fuel, vol. 234, pp. 276–285, 2018, ISSN: 00162361.
@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}
}
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.