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Natalia Quijorna Kyburz

Natalia Quijorna Kyburz

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Publications

  • Llano, T., Quijorna, N., Coz, A., Detoxification of a lignocellulosic waste from a pulp mill to enhance its fermentation prospects, 2017

    Energies, 10(3), 348-366

  • Llano, T., Garcia-Quevedo, N, Quijorna, N., Viguri, J.R., Coz, A., Evolution of lignocellulosic macrocomponents in the wastewater streams of a sulfite pulp mill: A preliminary biorefining approach, 2015

    Journal of Chemistry, 102534 

  • Rueda, C., Tejedor, C., Quijorna, N., Andrés, A., Coz, A., Influence of raw material on wood digestion in a sulfite pulp mill for biorefinery purposes, 2015

    Journal of Biology and Life Sciences, Vol. 2(2)

    Open Access
  • Coz, A., Llano, T., Rueda, C., Quijorna, N., Maican, E., Hydrolysis and separation of lignocellulosic biomass in a sulphite process to valorise the main fractions within the biorefinery concept., 2015

    NMATEH-Agricultural Engineering, ISSN 2344 – 4118, 223-228

  • Quijorna, N., de Pedro, M., Romero, M., Andrés, A., Characterisation of the sintering behaviour of Waelz slag from electric arc furnace (EAF) dust recycling for use in the clay ceramics industry, 2014

    Journal of Environmental Management 132, 278-286. IF: 3.057; Quartile in Category Q1 in Environmental Sciences (39/210).

  • Muñoz, I., Quijorna, N., Andrés, A., San Miguel, G. , Ruiz, D., Viguri, J.R., Application of life cycle analysis to evaluate the valorization of Waelz slag into ceramic bricks, 2014

    Conference:

    International Conference on Green Chemistry and Sustainable Engineering. Barcelona, July 28-31, 2014.www.greenchemse.com

    Contribution: Poster
    Proceedings:  we.tl/hvxSyRaU5i
    Abstract: This study evaluates the use of the LCA methodology to quantify the environmental implications of incorporating Waelz slag as substitute of clay in the production of standard bricks. The results show that the environmental impacts associated with the brick containing Waelz slag are lower than those estimated for the conventional brick. This was observed in all life cycle stages. Besides, resources is the category most affected during life cycle of both bricks.
  • Coz, A., Quijorna, N., Rueda, C., Llano, T., Portilla, A., Blanco, A., Andrés, A., Galán, B., Ruiz, G., Viguri, J.R., Valorization of a lignocellulosic waste from a Sulfite Pulp Mill in bioproducts, 2013

    Conference: Paperweek Canada 2013 and International Forest Biorefinery Symposium. http://www.paperweekcanada.ca/
    Contribution: Oral
    Proceedings: www.paperweekcanada.ca
    Abstract: The contribution shows the approaches to valorize the main compounds of the spent sulfite liquor from digestion process: (i) improving delignification step of the wood chips avoiding sugar denaturalization and the inhibitor compounds for the next fermentation processes, and (ii) completing the depolymerization of the carbohydrate polymers, obtaining the same quality of dissolving pulp.
  • Rueda, C., Llano, T., Tejedor, C., Quijorna, N., Dosal, E., Andrés, A., Coz, A., Characterization of species of Eucalyptus and comparison of its behavior as a lignocellulosic biomass in a pulp process, 2012

    Conference WasteEng 2012. 4th International Conference on Engineering for Waste and Biomass Valorisation, Porto, Portugal, 10 to 13 September 2012. http://www.wasteeng2012.org/
    Contribution: Poster
    Proceedings: Proceedings of the The 4th International Conference on Engineering for Waste and Biomass Valorisation (WasteEng12). Vol. 1, 166-171. ISBN: 979-10-91526-00-5. Edited by A, Nzihou and F. Castro.
    Abstract: The first aim of this work is the characterization of these two types of wood and to compare the obtained results with others found in literature. The second goal of this work is to study and to compare the behavior of these two species of wood in the acid sulfite process, analyzing the main expected properties of the resultant product (dissolving pulp) and waste (spent sulfite liquor).
  • Llano, T., Quijorna, N., Rueda, C., Blanco, A., Galán, B., Coz, A., Influence of the digestion variables on a pulping process to maximize all of the lignocellulosic waste options, 2012

    Conference: WasteEng 2012. 4th International Conference on Engineering for Waste and Biomass Valorisation, Porto, Portugal, 10 to 13 September 2012. http://www.wasteeng2012.org/
    Contribution: Oral
    Proceedings: Proceedings of the The 4th International Conference on Engineering for Waste and Biomass Valorisation (WasteEng12). Vol. 1, 166-171. ISBN: 979-10-91526-00-5. Edited by A, Nzihou and F. Castro.
    Abstract: The aim of this work is to study the main digestion variables, dwell time, temperature, ramp rate, SO2 content and liquor/wood ratio which affect the delignification process of hardwood chips to obtain dissolving pulp in order to develop a statistical model with all these variables and optimize the quantity of total fermentable sugars and lignosulphonates presented in spent sulfite liquors using GAMS software.
  • Quijorna, N., Coz, A., Andrés, A., Cheeseman, Chris, Recycling of Waelz slag and waste foundry sand in red clay bricks, 2012

    Resources, Conservation and Recycling 65, pp. 1-10.

  • Llano, T., Rueda, C., Quijorna, N., Blanco, A., Coz, A., Study of the delignification of hardwood chips in a pulping process for sugar production, 2012

    Journal of Biotechnology, 162 (2012) 422– 429.

  • Llano, T., Quijorna, N., Rueda, C., Mendivil, R., Galán, B., Coz, A., Analysis of sugars and inhibitors obtained by the digestion of hardwood chips for bioethanol production., 2011

    Conference: 8th European Congress of Chemical Engineering. ECCE-ECAB 2011. Berlin (Germany), 25 to 29 September, 2011. http://www.ecce2011.de/
    Contribution: Oral
    Proceedings: http://www.ecab2011.eu/congressplanner-path-1,93-type-2.html?thema=1_2140&day=
    Abstract: The aim of this work is to study the sugar and inhibitor characterization of the obtained liquor in different digestion conditions in order to improve the fermentation process. Acid sulfite pulping process has been studied in 1-liter reactors at laboratory scale. In this case, sulfite pulp is produced by a calcium magnesium bisulfite process based on eucalyptus wood at high temperature and pressure conditions in order to separate the fibers from lignin. Sugars and inhibitors have been analyzed by liquid chromatographic technique with refractive index detector.
  • Quijorna, N., Llano, T., Rueda, C., Blanco, A., Andrés, A., Portilla, A., Coz, A., Comparison of sugar content of two pulping processes in order to produce bioethanol of 2nd generation, 2011

    Conference Wastes: Solutions, Treatments, Opportunity. 1St Conference. Guimaraes, Portugal, 12 to 14 September 2011. http://www.wastes2011.org/
    Contribution: Oral
    Proceedings: 1st International Conference. WASTES: Solutions, Treatments and Opportunities, 769-774.
    Abstract: In this work, several laboratory cooking experiments, with Eucalyptus globulus and acidic magnesium sulfite as raw materials, have been done in order to determine the optimal conditions (temperature and pressure cycle) to transform a paper-grade pulping process into a dissolving pulping process and to compare the characteristics of the obtained liquor towards its valorization. The quality parameters of pulp product in both cases (paper and dissolving grade) have been monitored together with the physical and chemical properties of the liquor. An increase of the total sugar content has been observed in the dissolving process giving a better option for its valorization in bioethanol.
  • Quijorna, N., Miguel, G.S., Andrés, A., Incorporation of Waelz slag into commercial ceramic bricks: A practical example of industrial ecology, 2011

    Industrial and Engineering Chemistry Research 50 (9) , pp. 5806-5814.

  • Rueda, C., Lopez-Alvarez, J., Llano, T., Quijorna, N., Blanco, A., Viguri, J.R., Coz, A., Physico-chemical characterization of a spent sulflte liquor oriented to its valorization options. , 2011

    16th International Symposium on Wood, Fiber and Pulping Chemistry Proceedings, ISWFPC 1, pp. 584-587.

  • Rueda, C., Llano, T., Quijorna, N., Blanco, A., Viguri, J.R., Coz, A., Physico-chemical characterization of a spent sulphite liquor oriented to its valorization options., 2011

    Conference 16th International Symposium on Wood, Fibre and Pulping Chemistry - ISWFPC 2011. Tianjin,(China), 8 to 10 June, 2011. http://www.iswfpc2011.org/
    Proceedings: 16th International Symposium on Wood, Fiber and Pulping Chemistry - Proceedings, ISWFPC 1 , pp. 584-587
    Abstract: Spent sulfite liquor is obtained as a waste of the process of manufacturing dissolving pulp and due to its composition it can be exploited as a byproduct in other areas of research. Physico-chemical characterization of this waste is the primary goal of this work. Furthermore, in order to study the options for its valorization, sugars, lignosulfonates and other individual components have been determined. The most referenced options to valorize the spent sulfite liquor are lignosulfonates, bioethanol, xylitol, polyhidroxibutirate and hydrogen
  • Rueda, C., Llano, T., Quijorna, N., Ruiz, G., Coz, A., Study of acid hydrolysis conditions of a lignocellulosic industrial waste on the sugar content for bioethanol production., 2011

    Conference: 12th Mediterraneam Congress of Chemical Engineering, Barcelona, Spain, 15 to 18 November, 2011. http://www.ub.edu/congmedit/
    Contribution: Poster
    Proceedings: ABSTRACTS (digital book). 12th mediterraneam congress of chemical engineering ISBN: 978-84-615-4777-7
    Abstract: The aim of this work is the study of acid hydrolysis of the spent sulfite liquor at different conditions at laboratory scale in order to obtain fermentable sugars. The kind and concentration of acid, temperature and time of the process have been studied as process variables in the reactors based on previous studies. The obtained results give the optimal conditions of the acid hydrolysis for the valorization of this kind of lignocellulosic waste in bioethanol.
  • Alonso Santurde, R., Coz, A., Quijorna, N., Viguri, J.R., Andrés, A., Valorization of Foundry Sand in Clay Bricks at Industrial Scale, 2010

    Journal of Industrial Ecology 14 (2), pp. 217-230.

  • Quijorna, N., San Miguel, G. , Andrés, A., Application of industrial ecology through incorporation of waelz slag in brick production. An industrial-scale experiment, 2009

    Conference CEST 2009, http://cest.gnest.org/
    Contribution: Poster
    Proceedings: 11th International Conference on Environmental Science and Technology. Chania, Crete, Greece
    Abstract:  
  • Quijorna, N., Alonso Santurde, R., Coz, A., Viguri, J.R., Andrés, A., Emissions flow study in Waelz slag recycling into ceramic process, 2009

    Conference WASCON 2009, http://www.insavalor.fr/wascon2009/
    Contribution: Poster
    Proceedings: WASCON 2009 - 7th International Conference on the Environmental and Technical Implications of Construction with Alternative Materials. Lyon, France, 3-5 June 2009.
    Abstract:  
  • Quijorna, N., Coz, A., Viguri, J.R., Andrés, A., Environmental assessment of Waelz slag valorisation in brick manufacturing process, 2009

    Conference CILCA 2009, http://www.cilca2013.org/
    Contribution: Poster
    Proceedings: III Conferencias Internaciones de Análisis de Ciclo de Vida en Latinoamérica. Pucón, Chile
    Abstract:  
  • Alonso Santurde, R., Quijorna, N., Coz, A., Viguri, J.R., Andrés, A., Influence of shaping and firing technology on contaminated marine sediments based clay bricks, 2009

    Conference WASCON 2009, http://www.insavalor.fr/wascon2009/
    Contribution: Poster
    Proceedings: WASCON 2009 - 7th International Conference on the Environmental and Technical Implications of Construction with Alternative Materials. Lyon, France, 3-5 June 2009.
    Abstract: