Papers by Fernando Felissia
Bioresources, Nov 9, 2016
Agro-and forest-industrial wastes are abundant and low cost sources of carbohydrates and phenolic... more Agro-and forest-industrial wastes are abundant and low cost sources of carbohydrates and phenolic compounds, which can be converted into biofuels, biomaterials, and high added-value compounds by different pathways in small and large biorefineries. The development of technologies based on hydrothermal treatments could improve the utilization of lignocellulosic wastes through the separation of its components (cellulose, hemicellulose, lignin, and extractives) in sequential processes. The adopted technologies for the separation and conversion of these lignocellulosic wastes into synthesis intermediates or products of high added value represent an important part of the total production cost. Low liquid to solid ratios and mild temperatures in the pretreatment are interesting ways of reducing energy costs, subsequently economizing both steam and electricity. This work focuses on the advantages of using low liquid to solid ratios in the hydrothermal treatment of different agro-and forest-industrial wastes, paying particular attention to the performance of separation, purification, and conversion of hemicelluloses.
Biomass Conversion and Biorefinery, Jun 29, 2022
El Papel: revista internacional de la fabricación de pasta y papel, 2016
DOAJ (DOAJ: Directory of Open Access Journals), Apr 1, 2006
El objetivo de este trabajo fue verificar la potencialidad de las pulpas a la soda-antraquinona d... more El objetivo de este trabajo fue verificar la potencialidad de las pulpas a la soda-antraquinona de pino para la fabricación de papeles onda, liner y periódico (mezclado con pulpa de bagazo), utilizando esquemas tecnológicos adaptados de una fábrica de pulpas de bagazo. El trabajo se realizó con chips de pino provenientes de la zona norte de Misiones, según un procesamiento indicado por Papelera Tucumán. En el caso de liner y onda, el rendimiento alcanzado fue del 67 % y los resultados indicaron que el proceso utilizado (soda-AQ de pino, con impregnación del 25 % de los chips) es adecuado para la obtención de pulpa semiquímica marrón. La pulpa obtenida presentó una calidad más que suficiente para ser utilizada en la fabricación de papeles liner, encontrándose en el límite inferior de calidad para la fabricación de papeles onda (gramaje 130 g/m2, RCT 1,56 kN/m, CMT 172 N). Con respecto al papel periódico, la pulpa con rendimiento del 61 % se refinó mezclada con pulpa de bagazo en diferentes proporciones y se blanqueó con NaClO con un blanco objetivo de 70 % ISO. La mejor mezcla resultó la de 90 % de pulpa de bagazo y 10 % de pulpa semiquímica de pino.
Universidad Nacional de Misiones. Facultad de Ciencias Exactas, Químicas y Naturales. Centro de Investigación y Desarrollo Tecnológico, Nov 1, 2018
La creciente demanda de biomasa forestal ha motivado el cultivo de plantaciones forestales de cor... more La creciente demanda de biomasa forestal ha motivado el cultivo de plantaciones forestales de corta rotación en países desarrollados y en desarrollo. La Moringa oleifera es una especie de rápido crecimiento que se adapta a un amplio rango de suelos. La incorporación de esta especie como cultivo forestal en los sistemas silvo-pastoriles permitiría el uso de las semillas y hojas como forraje y productos medicinales/alimentos de bajo costo, obteniendo una mejor rentabilidad de los productores y mayor sustentabilidad de la actividad. El objetivo de este trabajo es conocer la composición química y la estructura morfológica de la madera de Moringa oleifera de dos edades diferentes (3 años y 8 años) para analizar su potencial uso como materia prima fibrosa de biorrefinerías.
This chapter discusses the fouling that occurs in evaporators used to concentrate the black liquo... more This chapter discusses the fouling that occurs in evaporators used to concentrate the black liquor in kraft pulp mills. Initially, the chemical nature of black liquors and the location of the recovery process within the framework of the kraft mill are briefly described. It includes an explanation about the different types of fouling and how they evolved over time due to changes that were made in the pulping process and due to evaporation technologies. It also describes the nature of the deposits and various proposals for mitigation. Finally, a series of case studies is presented.
La disminución en las reservas de petróleo a nivel mundial y los problemas medioambientales ocasi... more La disminución en las reservas de petróleo a nivel mundial y los problemas medioambientales ocasionados por su utilización, propician la búsqueda de nuevas alternativas renovables y menos contaminantes. En este trabajo se estudió el comportamiento de enzimas celulasas y celobiosas, junto con cepas de Saccharomyces cerevisiae, Candida kefyr, Candida tropicalis y Candida guilliermondii en el proceso de hidrólisis y fermentación simultánea (SSF) conducido a 35°C para la producción de bioetanol, a partir de los carbohidratos presentes en cascarilla de arroz. Este proceso busca hidrolizar la celulosa y aprovechar de inmediato los azúcares fermentables, atravesando la dificultad de la diferencia entre la temperatura óptima para el desempeño de enzimas (50°C) y la de levaduras (25°C a 35°C). La cascarilla fue pretratada con una secuencia ácido-alcalina para la separación de los carbohidratos. Los mayores % de bioetanol se obtuvieron con Saccharomyces cerevisiae (68%) y Candida kefyr (75%).
El Papel: revista internacional de la fabricación de pasta y papel, 2016
El Papel: revista internacional de la fabricación de pasta y papel, 2016
International Journal of Biological Macromolecules, 2020
Influence of initial chemical composition and characteristics of pulps on the production and prop... more Influence of initial chemical composition and characteristics of pulps on the production and properties of lignocellulosic nanofibers,
En el marco del proyecto «Biorrefinería a partir de residuos de industrialización primaria de la ... more En el marco del proyecto «Biorrefinería a partir de residuos de industrialización primaria de la madera»impulsado por el Instituto de Materiales de Misiones (IMaM) en Argentina, se probaron diferentes procesosde oxidación avanzada (POA) para reducir las concentraciones de compuestos presentes en efluentesresultantes del procesamiento químico de biomasa (en este caso, compuestos recalcitrantes producidos porla fabricación de pulpa quimimecánica)En el marco del proyecto «Biorrefinería a partir de residuos de industrialización primaria de la madera» impulsado por el Instituto de Materiales de Misiones (IMaM) en Argentina, se probaron diferentes procesos de oxidación avanzada (POA) para reducir las concentraciones de compuestos presentes en efluentes resultantes del procesamiento químico de biomasa (en este caso, compuestos recalcitrantes producidos por la fabricación de pulpa quimimecánica).Fil: Cardozo, Alejandro Ariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Materiales de Misiones. Universidad Nacional de Misiones. Facultad de Ciencias Exactas Químicas y Naturales. Instituto de Materiales de Misiones; ArgentinaFil: Covinich, Laura Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Materiales de Misiones. Universidad Nacional de Misiones. Facultad de Ciencias Exactas Químicas y Naturales. Instituto de Materiales de Misiones; ArgentinaFil: Area, Maria Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Materiales de Misiones. Universidad Nacional de Misiones. Facultad de Ciencias Exactas Químicas y Naturales. Instituto de Materiales de Misiones; ArgentinaFil: Felissia, Fernando Esteban. Universidad Nacional de Misiones; Argentin
Bioresources, Jul 26, 2022
Manufacturing processes and their economy are dramatically evolving due to machinery and digital ... more Manufacturing processes and their economy are dramatically evolving due to machinery and digital control improvements. Artificial intelligence, big data analytics, and the Internet of Things are key tools for this new industrial revolution era based on Industry 4.0. Bioeconomy and circular economy concepts have appeared in the forest, agriculture, food, pharmaceutical, pulp and paper, chemical, biotechnological, and energy areas, etc., to achieve sustainable economic growth development via biomass valorization in a biorefinery platform. Biorefinery process development at an industrial scale requires the previous design and assessment of processes and technologies. Therefore, economic, environmental, and social factors should be evaluated to prevent the failure in one of these issues that could affect the performance of the others. With a growing interest in sustainable economic development, there is a need to incorporate new technologies early enough in the process design. This study aims to better understand how Industry 4.0 era tools can bring new solutions to the biorefinery process design, in terms of the technical, economic, environmental, and social factors. Thus, these tools could improve and revolutionize the process selection optimization, provide alternatives for biomass valorization, integration strategies, and the metrics selection for process evaluation, adding the approach toward sustainable economic development.
Bioengineering, Jul 16, 2019
Soda-ethanol pulps, prepared from a forestry residue pine sawdust, were treated according to high... more Soda-ethanol pulps, prepared from a forestry residue pine sawdust, were treated according to high-consistency enzymatic fibrillation technology to manufacture nanocellulose. The obtained nanocellulose was characterized and used as ink for three-dimensional (3D) printing of various structures. It was also tested for its moisture sorption capacity and cytotoxicity, as preliminary tests for evaluating its suitability for wound dressing and similar applications. During the high-consistency enzymatic treatment it was found that only the treatment of the O 2-delignified pine pulp resulted in fibrillation into nano-scale. For 3D printing trials, the material needed to be fluidized further. By 3D printing, it was possible to fabricate various structures from the high-consistency enzymatic nanocellulose. However, the water sorption capacity of the structures was lower than previously seen with porous nanocellulose structures, indicating that further optimization of the material is needed. The material was found not to be cytotoxic, thus showing potential as material, e.g., for wound dressings and for printing tissue models.
Industrial Crops and Products, Apr 1, 2019
Bioresources, Jul 21, 2022
This research aimed to obtain biodegradable microfibrillated cellulose (MFC) films from a pine sa... more This research aimed to obtain biodegradable microfibrillated cellulose (MFC) films from a pine sawdust pulp for use as liquid containers. The films were combined with food-grade polyols (sorbitol, glycerol, and mannitol) to improve the hydrophobicity and provide barrier properties. Pine sawdust (a by-product of primary wood industrialization, highly available, and inexpensive) was treated with soda-ethanol and a 2-stage oxygen sequence. The resulting pulps were mechanically fibrillated to produce MFC with a disk refiner. The polyols were added to improve crosslinking and achieve a plasticizing effect. The films were dried at 25, 50, and 60 °C. The mechanical and barrier properties (tensile strength, elongation, vapor permeability, and water absorption), the crystallinity, and the transparency of the films were evaluated. Total migration tests were carried out to verify the compliance of the films with current regulations. Finally, the film's biodegradation properties in soil under normal climatic conditions were evaluated.
Biofuels, Bioproducts and Biorefining, Nov 25, 2019
The differences between a biorefinery and an oil refinery are determined by the higher oxygen con... more The differences between a biorefinery and an oil refinery are determined by the higher oxygen content of the biorefinery's biomass, its high degree of functionalization, its low thermal stability, its polar components, which are mostly acidic, its highly heterogeneous structure, and its quality variation as result of genotypic and phenotypic characteristics. Levulinic acid (LA) is one of the main high value-added chemicals that can be produced from lignocellulosic biomass as raw material. The main challenges for the conversion of lignocellulosic biomass to levulinic acid are related to the improvement of the technologies to obtain a pure and cost-competitive product, the design and use of efficient heterogeneous catalysts, and the improvements in the selectivity and useful life of the catalyst. This is an up-to-date review of the state of knowledge about the heterogeneous catalytic conversion of biomass into LA, addressing the technical hurdles that impede the attainment of high yields. This work outlines the chemistry of LA synthesis and discusses in detail the influence of the lignocellulosic raw material, reaction time, temperature, solvent according to the chemical pathway, and efficiency of the chosen Lewis and Brønsted solid acid catalysts.
Polymers, Jan 5, 2023
This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY
Chemical Industry & Chemical Engineering Quarterly, 2023
Article Highlights • Acid hydrolysis was carried out using an RCT275 sulfonated resin and sulfuri... more Article Highlights • Acid hydrolysis was carried out using an RCT275 sulfonated resin and sulfuric acid as reference • RCT275 was suitable for hydrolysis, avoiding the presence of sulfur traces in liquors • The maximum xylose yield was 82% using the RCT275 under mild conditions • Ni/γ-Al2O3 reached total xylose conversion with selectivity towards xylitol of 100% • RCT275 and Ni/γ-Al2O3 can be easily separated and reused in several reaction cycles
International Journal of Industrial Chemistry, Sep 1, 2018
This work proposes a kinetic model for the reactions involved in the heterogeneous copper-based F... more This work proposes a kinetic model for the reactions involved in the heterogeneous copper-based Fenton-type oxidation of mixed recalcitrant compounds in a real industrial effluent from the alkaline sulfite treatment of wood. This kind of treatment is unusual in this industry due to the complexity of the effluents and the high costs involved in total mineralization of the organic matter. Nevertheless, conversion of recalcitrant to degradable compounds and catalyst recovery can make the difference. The complexity of the effluent and the great number of compounds formed as intermediates, make extremely difficult the identification and quantification of the individual reactions that occur during oxidation. To solve this drawback TOC parameter was used as a representative measurement. To verify the level of TOC degradation produced by the heterogeneous catalysis reaction, experiences of homogeneous catalysis and adsorption were accomplished. The studied temperature range was 45-80 °C. A "two-step" kinetic model was applied to TOC reduction in heterogeneous and homogeneous oxidations, admitting two sequential steps of oxidation: a first fast stage ("seconds stage") followed by a slow one ("minutes stages"). Kinetic constants were obtained for both processes and activation energies were also determined for the "minutes stage" step (33.17 kJ/mol and 15.13 kJ/mol, respectively). Homogeneous catalysis studies confirm mass transfer limitations in heterogeneous oxidations. Experiences of adsorption of organic matter on CuO/γ-Al 2 O 3 catalyst demonstrated that this phenomenon is exothermic and cannot be neglected. The activation energy of adsorption was determined as 7.32 kJ/mol. Catalysts were characterized through SEM, EDS, XRD, FTIR, and TGA.
Journal of Applied Polymer Science, May 7, 2019
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Papers by Fernando Felissia