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Dr. Rafal Lukasik
Laboratório Nacional de Energia e Geologia, I.P.

Basic Info


Research Keywords & Expertise

0 Biomass
0 Bioprocess
0 Ionic Liquids
0 Biorefinery
0 Green Solvents

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Biomass
Ionic Liquids
Biorefinery
Green Solvents

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Short Biography

He has a PhD in Chemical Engineering. He is a Senior Researcher of Bioenergy and Biorefineries Unit of LNEG and Coordinator of Biorefineries for Bioenergy Program at the same institution. He is the author of more than 80 peer-review papers and several book chapters. He is editor of two books in Green Chemistry Series of RSC and inventor of 1 world and 4 national patents. He is the representation of the European Energy Research Alliance for Advisory Services on EU Long Term Decarbonisation Strategy European Energy Research Alliance and to UNI-SET (Universities in the SET Plan) of the Energy Transition and the Future of Energy Research, Innovation and Education: An Action Agendas for Europe`s Universities Report.

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Journal article
Published: 03 August 2021 in Energies
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The COVID-19 pandemic has set new challenges for the HoReCa industry. Lockdowns have coincided with and strongly impacted the industrial transformation processes that have been taking place for a decade. Among the most important HoReCa transition processes are those related to the rapid growth of the delivery-food market and ordering meals via internet platforms. The new delivery-food market requires not only the development of specific distribution channels, but also the introduction of appropriate, very specific food packaging. Food packaging and its functionality are defined by the administrative requirements and standards applicable to materials that have contact with food and principally through the prism of the ecological disaster caused by enormous amounts of plastic waste, mainly attributed to the food packaging. To meet environmental and administrative requirements, new technologies to produce food packaging materials are emerging, ensuring product functionality, low environmental impact, biodegradability, and potential for composting of the final product. However, predominantly, the obtained product should keep the nutritional value of food and protect it against changes in color or shape. Current social transformation has a significant impact on the food packaging sector, on one hand creating a new lifestyle for society all over the world, and on the other, a growing awareness of the negative impact of humans on the environment and increasing responsibility for the planet. The COVID-19 pandemic has highlighted the need to develop a circular economy based on the paradigm of shortening distribution channels, using local raw materials, limiting the consumption of raw materials, energy, water, and above all, minimizing waste production throughout the life cycle of products, all of which are in line with the idea of low-carbon development.

ACS Style

Ewa Kochańska; Rafał Łukasik; Maciej Dzikuć. New Circular Challenges in the Development of Take-Away Food Packaging in the COVID-19 Period. Energies 2021, 14, 4705 .

AMA Style

Ewa Kochańska, Rafał Łukasik, Maciej Dzikuć. New Circular Challenges in the Development of Take-Away Food Packaging in the COVID-19 Period. Energies. 2021; 14 (15):4705.

Chicago/Turabian Style

Ewa Kochańska; Rafał Łukasik; Maciej Dzikuć. 2021. "New Circular Challenges in the Development of Take-Away Food Packaging in the COVID-19 Period." Energies 14, no. 15: 4705.

Journal article
Published: 27 April 2021 in Energies
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Climate changes are nowadays reality and affect all aspects of everyday life. One of the places where these changes influence the society the most is the Brazilian Ceará region and Jaguaribara basin that suffer long-lasting, devastating drought cycles. They have a dramatic negative impact on local economy, forcing change in business models. This work presents the valorisation of wastes and residues from local fish, prawns, and the vegetable-cultivation industry via biogas production forced to adapt to these new circumstances. Along a single year, as much as 189.74 tonnes of wastes and residues can be processed by the biogas production facility, producing as much as 94 GJ of cooling energy and 1 tonne of biofertiliser monthly. Even for such a small biogas production facility, the NPV is positive already after 11 years; its IRR is 6.2%, and accumulated ROI for 20 years of operation is as high as 77.8%. This work demonstrates that a valorisation of industrial wastes and residues via biogas production is a feasible solution for a specific industrial scenario addressing new socio-economic challenges for the particular enterprise.

ACS Style

Júlio Ximenes; André Siqueira; Ewa Kochańska; Rafał Łukasik. Valorisation of Agri- and Aquaculture Residues via Biogas Production for Enhanced Industrial Application. Energies 2021, 14, 2519 .

AMA Style

Júlio Ximenes, André Siqueira, Ewa Kochańska, Rafał Łukasik. Valorisation of Agri- and Aquaculture Residues via Biogas Production for Enhanced Industrial Application. Energies. 2021; 14 (9):2519.

Chicago/Turabian Style

Júlio Ximenes; André Siqueira; Ewa Kochańska; Rafał Łukasik. 2021. "Valorisation of Agri- and Aquaculture Residues via Biogas Production for Enhanced Industrial Application." Energies 14, no. 9: 2519.

Journal article
Published: 15 April 2021 in Acta Innovations
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The European (and global) energy sector is in a process of profound transformation, making it essential for changes to take place that influence energy producers, operators, and regulators, as well as consumers themselves, as they are the ones who interact in the energy market. The RED II Directive changes the paradigm of the use of biomass in the heat and electricity sectors, by introducing sustainability criteria with mandatory minimum greenhouse gas (GHG) emission reductions and by establishing energy efficiency criteria. For the transport sector, the extension of the introduction of renewables to all forms of transport (aviation, maritime, rail and road short and long distance), between 2021-2030, the strengthening of energy efficiency and the strong need to reduce GHG emissions, are central to achieving the national targets for renewables in transport, representing the main structural changes in the European decarbonisation policy in that sector. It is necessary to add that biomass is potentially the only source of renewable energy that makes it possible to obtain negative GHG emission values, considering the entire life cycle including CO2 capture and storage. Hence, this work aims to analyse the relevance of biomass for CHP and in particular, the use of biomass for biofuels that contribute to achieving carbon neutrality in 2050. The following thematic sub-areas are addressed in this work: i) the new environmental criteria for the use of biomass for electricity in the EU in light of now renewable energy directive; ii) current and emerging biofuel production technologies and their respective decarbonization potential; iii) the relevance or not of the development of new infrastructures for distribution renewable fuels, alternatives to the existing ones (biomethane, hydrogen, ethanol); iv) the identification of the necessary measures for biomass in the period 2020-2030

ACS Style

Rafał M. Łukasik. Biofuels – Towards Objectives Of 2030 And Beyond. Acta Innovations 2021, 32 -40.

AMA Style

Rafał M. Łukasik. Biofuels – Towards Objectives Of 2030 And Beyond. Acta Innovations. 2021; (39):32-40.

Chicago/Turabian Style

Rafał M. Łukasik. 2021. "Biofuels – Towards Objectives Of 2030 And Beyond." Acta Innovations , no. 39: 32-40.

Journal article
Published: 30 September 2020 in Acta Innovations
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Biorefineries are emerging as the proper route to defeat climate change and other social, socio-economic and environmental concerns. So far, no residual lignocellulosic biomass-based biorefineries have been yet industrially implemented, mainly due to its economic viability. This article exposes some elements that may help overcome the bottlenecks associated to its social, economic and environmental sustainability: small-scale approaches, biomass valorisation through added-value products and near-zero effluent.

ACS Style

Tiago F. Lopes; Rafał M. Łukasik. Economic, social and environmental impacts attained by the use of the effluents generated within a small-scale biorefinery concept. Acta Innovations 2020, 57 -63.

AMA Style

Tiago F. Lopes, Rafał M. Łukasik. Economic, social and environmental impacts attained by the use of the effluents generated within a small-scale biorefinery concept. Acta Innovations. 2020; (36):57-63.

Chicago/Turabian Style

Tiago F. Lopes; Rafał M. Łukasik. 2020. "Economic, social and environmental impacts attained by the use of the effluents generated within a small-scale biorefinery concept." Acta Innovations , no. 36: 57-63.

Original paper
Published: 14 May 2020 in Waste and Biomass Valorization
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Implementation of green chemistry and biorefinery concept are needed to boost production of biomass-derived fuels, chemicals, and materials with cost-effective processing of sustainable feedstock. The use of imidazole as a novel solvent for biomass pretreatment creates an approach that helps accomplish this concept. The present work is dedicated to study the pretreatment of residual lignocellulosic biomass, namely, extracted solid waste of Cupressus lusitanica, by application of the alkaline solvent—imidazole. The pretreatment allowed obtaining cellulose- and hemicellulose-rich fractions, whereas lignin was depolymerized. Both cellulose and hemicellulose recovery were highly dependent on the reaction conditions. The highest cellulose content was obtained at 160 °C for 4 h and was 40.7 ± 0.6 wt% with a delignification yield of 65.2 ± 0.4 wt%. The effect of biomass delignification on the efficiency of enzymatic digestibility was also analyzed and it was observed a good linear relationship between the delignification yield and the glucan to glucose yield. The presence of added-value phenolic compounds from depolymerized lignin in recovered imidazole was analyzed by capillary electrophoresis and determination of total phenolic content and antioxidant activity was also performed. These compounds were tentatively identified and their structures proposed on the basis of the HPLC–MS analyzes.

ACS Style

Pedro M. A. Pereira; Joana R. Bernardo; M. Conceição Oliveira; Luisa Bivar Roseiro; Rafał M. Łukasik. Depolymerization of Lignin from Extracted Solid Waste of Cupressus lusitanica Mill. Biomass Using Imidazole. Waste and Biomass Valorization 2020, 12, 1341 -1355.

AMA Style

Pedro M. A. Pereira, Joana R. Bernardo, M. Conceição Oliveira, Luisa Bivar Roseiro, Rafał M. Łukasik. Depolymerization of Lignin from Extracted Solid Waste of Cupressus lusitanica Mill. Biomass Using Imidazole. Waste and Biomass Valorization. 2020; 12 (3):1341-1355.

Chicago/Turabian Style

Pedro M. A. Pereira; Joana R. Bernardo; M. Conceição Oliveira; Luisa Bivar Roseiro; Rafał M. Łukasik. 2020. "Depolymerization of Lignin from Extracted Solid Waste of Cupressus lusitanica Mill. Biomass Using Imidazole." Waste and Biomass Valorization 12, no. 3: 1341-1355.

Journal article
Published: 15 April 2020 in Renewable Energy
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Agave bagasse is one of the most abundant lignocellulosic residues readily available for valorization. The agave bagasse was pretreated by applying high-pressure CO2–H2O mixture at temperatures ranging from 150 to 190 °C for a residence time varying from 10 to 50 min. Subsequently, solid phase obtained from pretreatment was subject to enzymatic hydrolysis at high solid loadings. Under optimal conditions, the process integrating pretreatment followed by enzymatic hydrolysis yielded 75.8 mol% of the polysaccharides present in the biomass converted into oligo- or monosaccharides, providing 110.5 g/L of reducing sugars. The monosaccharides present in the obtained hydrolysate were successfully fermented into ethanol, demonstrating the feasibility of performing its biological conversion to commercial biofuels or biochemicals. Thereby, the present study has demonstrated the proof of concept of use of more sustainable high-pressure CO2–H2O pretreatment in the context of lignocellulosic residual biomass valorization based on the biochemical sugar platform.

ACS Style

Arelí Aguirre-Fierro; Héctor A. Ruiz; Miguel A. Cerqueira; Rodolfo Ramos-González; Rosa M. Rodríguez-Jasso; Susana Marques; Rafal M. Lukasik. Sustainable approach of high-pressure agave bagasse pretreatment for ethanol production. Renewable Energy 2020, 155, 1347 -1354.

AMA Style

Arelí Aguirre-Fierro, Héctor A. Ruiz, Miguel A. Cerqueira, Rodolfo Ramos-González, Rosa M. Rodríguez-Jasso, Susana Marques, Rafal M. Lukasik. Sustainable approach of high-pressure agave bagasse pretreatment for ethanol production. Renewable Energy. 2020; 155 ():1347-1354.

Chicago/Turabian Style

Arelí Aguirre-Fierro; Héctor A. Ruiz; Miguel A. Cerqueira; Rodolfo Ramos-González; Rosa M. Rodríguez-Jasso; Susana Marques; Rafal M. Lukasik. 2020. "Sustainable approach of high-pressure agave bagasse pretreatment for ethanol production." Renewable Energy 155, no. : 1347-1354.

Review
Published: 01 April 2020 in Acta Innovations
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In this review key processes for the synthesis of greener or more sustainable solvents derived from renewable sources (saccharides, lignocellulose and triglycerides) are discussed. It is shown that a series of platform chemicals such as glycerol, levulinic acid and furans can be converted into a variety of solvents through catalytic transformations that include hydrolysis, esterification, reduction and etherification reactions. It was also considered several aspects of each class of solvent regarding performance within the context of the reactions or extractions for which it is employed.

ACS Style

Débora Merediane Kochepkaa; Laís Pastre Dill; Douglas Henrique Fockink; Rafał M. Łukasik. Contribution to the production and use of biomass-derived solvents – a review. Acta Innovations 2020, 29 -57.

AMA Style

Débora Merediane Kochepkaa, Laís Pastre Dill, Douglas Henrique Fockink, Rafał M. Łukasik. Contribution to the production and use of biomass-derived solvents – a review. Acta Innovations. 2020; (35):29-57.

Chicago/Turabian Style

Débora Merediane Kochepkaa; Laís Pastre Dill; Douglas Henrique Fockink; Rafał M. Łukasik. 2020. "Contribution to the production and use of biomass-derived solvents – a review." Acta Innovations , no. 35: 29-57.

Short communication
Published: 25 July 2019 in Journal of CO2 Utilization
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Vicine from faba bean is a causative agent of favism, a genetic disease, which manifests as hemolytic anemia. Despite that low vicine varieties of faba bean exist, they are not widely cultivated. Several extraction methods of vicine from faba beans have been presented in the literature, however, their low efficiency associated to time-consuming and costly process limit the practical use. This work for the first time addresses the employment of high-pressure CO2-assisted extraction of the pyrimidine glycosides from the faba bean. For this purpose, the effect of temperature, CO2 pressure and time on vicine extraction was scrutinized using Box-Behnken design of experiments. Response surface methodology was used to determine the optimal extraction conditions. At 40.7 °C, 8.1 bar of CO2 pressure and 5.1 min of extraction, 81% of total vicine should be extracted from faba bean.

ACS Style

Katarzyna Polanowska; Jacek Nowak; Rafał M. Łukasik. Efficient extraction of vicine from faba beans using reactive system of high-pressure CO2/water. Journal of CO2 Utilization 2019, 33, 473 -477.

AMA Style

Katarzyna Polanowska, Jacek Nowak, Rafał M. Łukasik. Efficient extraction of vicine from faba beans using reactive system of high-pressure CO2/water. Journal of CO2 Utilization. 2019; 33 ():473-477.

Chicago/Turabian Style

Katarzyna Polanowska; Jacek Nowak; Rafał M. Łukasik. 2019. "Efficient extraction of vicine from faba beans using reactive system of high-pressure CO2/water." Journal of CO2 Utilization 33, no. : 473-477.

Journal article
Published: 24 June 2019 in Molecules
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L-3,4-dihydroxyphenylalanine (l-DOPA) is a medically relevant compound in Parkinson’s disease therapy. Several extraction methods of l-DOPA from beans, including velvet and faba beans, have been described in the literature. However, these methods require the use of strong acids, long extraction times, or complex downstream processing, which makes the extraction of l-DOPA expensive and energy-demanding, limiting its industrial application. In addition, the stability of l-DOPA during the extraction process is critical, further complicating the extraction of adequate amounts of this amino acid. This work is the first report on a simple, rapid, greener, and robust extraction method of l-DOPA. The developed method consists of a quick homogenization step followed by a double extraction with 0.2% v/v acetic acid for 20 min and was applied to faba bean at a ratio of 1:25 with respect to the extracting solvent. This study also investigated the stability of l-DOPA during extraction and thermal treatment. The proposed method demonstrated to be robust and extraordinarily efficient for numerous cultivars of faba bean, velvet bean, and food products containing faba beans.

ACS Style

Katarzyna Polanowska; Rafal M. Łukasik; Maciej Kuligowski; Jacek Nowak. Development of a Sustainable, Simple, and Robust Method for Efficient l-DOPA Extraction. Molecules 2019, 24, 2325 .

AMA Style

Katarzyna Polanowska, Rafal M. Łukasik, Maciej Kuligowski, Jacek Nowak. Development of a Sustainable, Simple, and Robust Method for Efficient l-DOPA Extraction. Molecules. 2019; 24 (12):2325.

Chicago/Turabian Style

Katarzyna Polanowska; Rafal M. Łukasik; Maciej Kuligowski; Jacek Nowak. 2019. "Development of a Sustainable, Simple, and Robust Method for Efficient l-DOPA Extraction." Molecules 24, no. 12: 2325.

Journal article
Published: 14 June 2019 in Renewable Energy
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The effectiveness of imidazole and ionic liquid pretreatments for conversion of cotton spinning residues (dirty cotton residue - DCR and cotton filter powder – CFP) into soluble sugars was investigated. DCR was pretreated with imidazole using temperatures and reaction times that were arranged in a 22 factorial design and pretreatment performance was evaluated by enzymatic hydrolysis. High glucan to glucose and xylan to xylose yields (78.0 and 94.9 mol %) were obtained from the solids produced at 140 °C and 2 h (center point), which provided delignification levels of 45.5% (w·v−1). The same pretreatment condition was applied to CFP yielding only 16.0% (w·v−1) of delignification, but 75.8 mol % of glucan and 95.7 mol % of xylan were converted as their corresponding monomeric sugars after enzymatic hydrolysis. Both pretreated materials were subjected to a central composite design to find the best enzymatic hydrolysis conditions regarding substrate total solids (TS) and enzyme loading. More than 40 g L−1 glucose was obtained from both pretreated materials at 13.7% w·w−1 TS and 20 FPU·g−1 glucan after 96 h of hydrolysis. Ionic liquid pretreatment of the same cotton spinning residues showed moderate delignification levels, accompanied by a change in biomass crystallinity from cellulose Iβ to cellulose II. This turned to be very important to improve enzymatic hydrolysis yields. Therefore, biomass delignification and crystallinity confirmed to be key factors governing the enzymatic saccharification of cotton spinning residues.

ACS Style

Douglas H. Fockink; Jürgen Andreaus; Luiz P. Ramos; Rafał M. Łukasik. Pretreatment of cotton spinning residues for optimal enzymatic hydrolysis: A case study using green solvents. Renewable Energy 2019, 145, 490 -499.

AMA Style

Douglas H. Fockink, Jürgen Andreaus, Luiz P. Ramos, Rafał M. Łukasik. Pretreatment of cotton spinning residues for optimal enzymatic hydrolysis: A case study using green solvents. Renewable Energy. 2019; 145 ():490-499.

Chicago/Turabian Style

Douglas H. Fockink; Jürgen Andreaus; Luiz P. Ramos; Rafał M. Łukasik. 2019. "Pretreatment of cotton spinning residues for optimal enzymatic hydrolysis: A case study using green solvents." Renewable Energy 145, no. : 490-499.

Journal article
Published: 23 February 2019 in Molecules
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Ionic liquids have been recognised as interesting solvents applicable in efficient lignocellulosic biomass valorisation, especially in biomass fractionation into individual polymeric components or direct hydrolysis of some biomass fractions. Considering the chemical character of ionic liquids, two different approaches paved the way for the fractionation of biomass. The first strategy integrated a pre-treatment, hydrolysis and conversion of biomass through the employment of hydrogen-bond acidic 1-ethyl-3-methyimidazolim hydrogen sulphate ionic liquid. The second strategy relied on the use of a three-step fractionation process with hydrogen-bond basic 1-ethyl-3-methylimidazolium acetate to produce high purity cellulose, hemicellulose and lignin fractions. The proposed approaches were scrutinised for wheat straw and eucalyptus residues. These different biomasses enabled an understanding that enzymatic hydrolysis yields are dependent on the crystallinity of the pre-treated biomass. The use of acetate based ionic liquid allowed crystalline cellulose I to change to cellulose II and consequently enhanced the glucan to glucose yield to 93.1 ± 4.1 mol% and 82.9 ± 1.2 mol% for wheat straw and eucalyptus, respectively. However, for hydrogen sulphate ionic liquid, the same enzymatic hydrolysis yields were 61.6 ± 0.2 mol% for wheat straw and only 7.9 ± 0.3 mol% for eucalyptus residues. These results demonstrate the importance of both ionic liquid character and biomass type for efficient biomass processing.

ACS Style

Joana R. Bernardo; Francisco M. Gírio; Rafał M. Łukasik. The Effect of the Chemical Character of Ionic Liquids on Biomass Pre-Treatment and Posterior Enzymatic Hydrolysis. Molecules 2019, 24, 808 .

AMA Style

Joana R. Bernardo, Francisco M. Gírio, Rafał M. Łukasik. The Effect of the Chemical Character of Ionic Liquids on Biomass Pre-Treatment and Posterior Enzymatic Hydrolysis. Molecules. 2019; 24 (4):808.

Chicago/Turabian Style

Joana R. Bernardo; Francisco M. Gírio; Rafał M. Łukasik. 2019. "The Effect of the Chemical Character of Ionic Liquids on Biomass Pre-Treatment and Posterior Enzymatic Hydrolysis." Molecules 24, no. 4: 808.

Preprint
Published: 04 February 2019
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Ionic liquids have been recognised as interesting solvents applicable in the efficient lignocellulosic biomass valorisation, especially in the biomass fractionation into individual polymeric components or direct hydrolysis some of biomass fractions. Considering the chemical character of ionic liquids, two different approaches, paved the way for a fractionation of biomass. The first strategy integrated a pre-treatment, hydrolysis and conversion of biomass through the employment of hydrogen-bond acidic 1-ethyl-3-methyimidazolim hydrogen sulfate ionic liquid. The second one relied on the use of a three-step fractionation process with hydrogen-bond basic 1-ethyl-3-methylimidazolium acetate to produce high purity cellulose, hemicellulose and lignin fractions. The proposed approaches were scrutinised for wheat straw and eucalyptus residues. Those different biomasses allowed understanding that enzymatic hydrolysis yields are dependent on the crystallinity of pre-treated biomass. The use of acetate based ionic liquid allowed to change crystalline cellulose I to cellulose II and consequently enhanced glucan to glucose yield to 93.14.1 mol% and 82.91.2 mol% for wheat straw and eucalyptus, respectively. Whereas for hydrogen sulfate ionic liquid, the same enzymatic hydrolysis yields were 61.6  0.2 mol% for wheat straw and only 7.90.3 mol% for eucalyptus residues. These results demonstrate the importance of either ionic liquid character or biomass type on the efficient biomass processing.

ACS Style

Joana R. Bernardo; Francisco M. Girio; Rafal Lukasik. The Effect of Chemical Character of Ionic Liquids on Biomass Pre-Treatment and Posterior Enzymatic Hydrolysis. 2019, 1 .

AMA Style

Joana R. Bernardo, Francisco M. Girio, Rafal Lukasik. The Effect of Chemical Character of Ionic Liquids on Biomass Pre-Treatment and Posterior Enzymatic Hydrolysis. . 2019; ():1.

Chicago/Turabian Style

Joana R. Bernardo; Francisco M. Girio; Rafal Lukasik. 2019. "The Effect of Chemical Character of Ionic Liquids on Biomass Pre-Treatment and Posterior Enzymatic Hydrolysis." , no. : 1.

Journal article
Published: 01 November 2018 in The Journal of Supercritical Fluids
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The phase behaviour of the system CO2 + methanol + glycerol has been studied at low concentrations of this tri-alcohol. The synthetic method was implemented in a visual sapphire cell. New phase diagrams were obtained at temperatures of 313.15 and 333.15 K. Different methanol/glycerol molar ratios of 113, 50 and 30 were considered and its influence on phase behaviour accounted for. Pressures were varied from 6.03 to 11.44 MPa. A specific experiment is reported, starting from an initial volume of 4 mL of liquid mixture methanol + glycerol (methanol/glycerol molar ratio 30), where, with a stepwise addition of CO2, diverse fluid phase phenomena were detected, such as VLE, Critical Point, VLLE, VLLLE, LLE and LE.

ACS Style

Gonçalo V.S.M. Carrera; Zoran P. Visak; Rafal M. Lukasik; Manuel Nunes Da Ponte. CO2 + Methanol + Glycerol: Multiphase behaviour. The Journal of Supercritical Fluids 2018, 141, 260 -264.

AMA Style

Gonçalo V.S.M. Carrera, Zoran P. Visak, Rafal M. Lukasik, Manuel Nunes Da Ponte. CO2 + Methanol + Glycerol: Multiphase behaviour. The Journal of Supercritical Fluids. 2018; 141 ():260-264.

Chicago/Turabian Style

Gonçalo V.S.M. Carrera; Zoran P. Visak; Rafal M. Lukasik; Manuel Nunes Da Ponte. 2018. "CO2 + Methanol + Glycerol: Multiphase behaviour." The Journal of Supercritical Fluids 141, no. : 260-264.

Journals
Published: 24 July 2018 in Green Chemistry
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An acidic ionic liquid offers an exciting window to directly produce hemicellulose pentoses and to valorise cellulose and lignin.

ACS Style

André M. Da Costa Lopes; Roberto Manoel Gonçalves Lins; Ricardo A. Rebelo; Rafal Marcin Lukasik. Biorefinery approach for lignocellulosic biomass valorisation with an acidic ionic liquid. Green Chemistry 2018, 20, 4043 -4057.

AMA Style

André M. Da Costa Lopes, Roberto Manoel Gonçalves Lins, Ricardo A. Rebelo, Rafal Marcin Lukasik. Biorefinery approach for lignocellulosic biomass valorisation with an acidic ionic liquid. Green Chemistry. 2018; 20 (17):4043-4057.

Chicago/Turabian Style

André M. Da Costa Lopes; Roberto Manoel Gonçalves Lins; Ricardo A. Rebelo; Rafal Marcin Lukasik. 2018. "Biorefinery approach for lignocellulosic biomass valorisation with an acidic ionic liquid." Green Chemistry 20, no. 17: 4043-4057.

Journal article
Published: 01 May 2018 in Energy
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This work provides an insight into sugarcane bagasse pre-treatment carried out with greener and more sustainable CO2/H2O system. Temperatures and residence times at a fixed initial CO2 pressure were studied to verify their effects on pre-treatment efficiency with regard to the chemical composition of both water-soluble and water-insoluble fractions as well as to the susceptibility of the latter to enzymatic hydrolysis at high total solids. Also, trends in enzymatic hydrolysis were analysed in function of biomass crystallinity. This work provides an integrated approach in the analysis of upgradable sugars that are released as a result of pre-treatment and enzymatic hydrolysis. At optimal pre-treatment conditions, 17.2 g⋅L−1 sugars were released in the water-soluble fraction mainly as pentoses in monomeric and oligomeric forms. The enzymatic hydrolysis of solids produced at these pre-treatment conditions gave 76.8 g⋅L−1 glucose in the substrate hydrolysate. The overall sugar yield delivered in both pre-treatment and enzymatic hydrolysis was 73.9 mol%. These results were compared to the chemical effect of hydrothermal and/or physico-chemical effects of N2-aided hydrothermal processes and showed that the greener processing of biomass pre-treatment with CO2 is advantageous for the integrated valorisation of industrial residues and delivery of upgradable sugars within the biorefinery concept.

ACS Style

Douglas Henrique Fockink; Ana Morais; Luiz P. Ramos; Rafał M. Łukasik. Insight into the high-pressure CO2 pre-treatment of sugarcane bagasse for a delivery of upgradable sugars. Energy 2018, 151, 536 -544.

AMA Style

Douglas Henrique Fockink, Ana Morais, Luiz P. Ramos, Rafał M. Łukasik. Insight into the high-pressure CO2 pre-treatment of sugarcane bagasse for a delivery of upgradable sugars. Energy. 2018; 151 ():536-544.

Chicago/Turabian Style

Douglas Henrique Fockink; Ana Morais; Luiz P. Ramos; Rafał M. Łukasik. 2018. "Insight into the high-pressure CO2 pre-treatment of sugarcane bagasse for a delivery of upgradable sugars." Energy 151, no. : 536-544.

Article
Published: 28 February 2018 in ChemSusChem
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Biomass processing with ionic liquids (ILs) is one of the most topical research areas in the recent years. However, separation and recovery of biomass products and ILs are currently a challenge. The recovery of produced monosaccharides from IL post-reaction solution and a possibility to reuse of ILs is strongly required to guarantee the sustainability of the biomass processing. The present study demonstrates a novel approach aiming at the separation of a biomass hemicellulose-derived product, namely xylose and 1-ethyl-3-methylimidazolium hydrogensulphate. A high polarity of a post-reaction system composed of xylose, IL and water is one of the major hindrances in the separation performance. A proposed solution is a fine-tuning of system polarity by addition of a moderate-polarity acetonitrile. To scrutinise the potential of xylose and IL separation, a phase equilibria of a system constituted by [emim][HSO4], water and acetonitrile was studied. Additionally, preparative chromatography experiments with alumina as a stationary phase were performed to determine the conditions required for efficient separation of sugar and IL by selective adsorption of xylose on alumina in detriment of IL. The amount and treatment of stationary phase, eluent polarity and amount of loaded sample were scrutinised in this study too. The treatment of alumina was considered as a step necessary to achieve 90.8 wt.% and 98.1 wt.% of IL and xylose recovery yields, as separate fractions.

ACS Style

Andre M. Da Costa Lopes; Rafal M. Łukasik. Separation and Recovery of a Hemicellulose-Derived Sugar Produced from the Hydrolysis of Biomass by an Acidic Ionic Liquid. ChemSusChem 2018, 11, 1099 -1107.

AMA Style

Andre M. Da Costa Lopes, Rafal M. Łukasik. Separation and Recovery of a Hemicellulose-Derived Sugar Produced from the Hydrolysis of Biomass by an Acidic Ionic Liquid. ChemSusChem. 2018; 11 (6):1099-1107.

Chicago/Turabian Style

Andre M. Da Costa Lopes; Rafal M. Łukasik. 2018. "Separation and Recovery of a Hemicellulose-Derived Sugar Produced from the Hydrolysis of Biomass by an Acidic Ionic Liquid." ChemSusChem 11, no. 6: 1099-1107.

Journals
Published: 06 February 2018 in New Journal of Chemistry
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Integration of hydrothermal and alkaline processing in the formation of upgradable sugars for advanced processing of sugarcane bagasse residues.

ACS Style

João Evandro Brandão Tavares; Rafal Marcin Lukasik; Teresa C.B. Paiva; Flávio T. da Silva. Hydrothermal alkaline sulfite pretreatment in the delivery of fermentable sugars from sugarcane bagasse. New Journal of Chemistry 2018, 42, 4474 -4484.

AMA Style

João Evandro Brandão Tavares, Rafal Marcin Lukasik, Teresa C.B. Paiva, Flávio T. da Silva. Hydrothermal alkaline sulfite pretreatment in the delivery of fermentable sugars from sugarcane bagasse. New Journal of Chemistry. 2018; 42 (6):4474-4484.

Chicago/Turabian Style

João Evandro Brandão Tavares; Rafal Marcin Lukasik; Teresa C.B. Paiva; Flávio T. da Silva. 2018. "Hydrothermal alkaline sulfite pretreatment in the delivery of fermentable sugars from sugarcane bagasse." New Journal of Chemistry 42, no. 6: 4474-4484.

Journals
Published: 20 July 2017 in Green Chemistry
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We provide a critical review of green processes enabling the fractionation and/or depolymerization of lignin towards value-added products.

ACS Style

S. Gillet; M. Aguedo; L. Petitjean; A. R. C. Morais; A. M. Da Costa Lopes; R. M. Łukasik; P. T. Anastas. Lignin transformations for high value applications: towards targeted modifications using green chemistry. Green Chemistry 2017, 19, 4200 -4233.

AMA Style

S. Gillet, M. Aguedo, L. Petitjean, A. R. C. Morais, A. M. Da Costa Lopes, R. M. Łukasik, P. T. Anastas. Lignin transformations for high value applications: towards targeted modifications using green chemistry. Green Chemistry. 2017; 19 (18):4200-4233.

Chicago/Turabian Style

S. Gillet; M. Aguedo; L. Petitjean; A. R. C. Morais; A. M. Da Costa Lopes; R. M. Łukasik; P. T. Anastas. 2017. "Lignin transformations for high value applications: towards targeted modifications using green chemistry." Green Chemistry 19, no. 18: 4200-4233.

Chapter
Published: 15 June 2017 in Production of Platform Chemicals from Sustainable Resources
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Furfural has been identified as one of the most important biomass-based platform chemicals and has the potential to be used as a substitute of petrochemical-derived building blocks in the production of chemicals and advanced biofuels. Despite that the current industrial production technology of furfural is well established, it is characterised by moderate production yield and selectivity which reduces its competitiveness with crude oil-based alternatives. Furthermore, conventional furfural production requires high energy and generates acidic waste streams. Thus, research on more economic and environmentally benign furfural production strategies from hemicellulose biomass and pentose sugar feedstocks has become of worldwide interest in the scientific community and chemical industry. The present chapter aims to provide state-of-the-art developments in the field of catalytic synthesis of furfural from C5-sugars and hemicellulose biomass, taking into the consideration of green chemistry principles. Among the many advances, the employment of homogeneous catalysts i.e. metal halides, ionic liquids and high-pressure CO2 is presented. Application of heterogeneous catalysts is addressed briefly. The performance and efficiency of each catalytic approach in terms of catalyst reactivity, furfural yield and selectivity, as well as the sustainability of furfural production are analysed. Finally, critical outlook and perspectives of the development of sustainable furfural production processes are provided.

ACS Style

Andre M. Da Costa Lopes; Ana Rita C. Morais; Rafał M. Łukasik. Sustainable Catalytic Strategies for C5-Sugars and Biomass Hemicellulose Conversion Towards Furfural Production. Production of Platform Chemicals from Sustainable Resources 2017, 45 -80.

AMA Style

Andre M. Da Costa Lopes, Ana Rita C. Morais, Rafał M. Łukasik. Sustainable Catalytic Strategies for C5-Sugars and Biomass Hemicellulose Conversion Towards Furfural Production. Production of Platform Chemicals from Sustainable Resources. 2017; ():45-80.

Chicago/Turabian Style

Andre M. Da Costa Lopes; Ana Rita C. Morais; Rafał M. Łukasik. 2017. "Sustainable Catalytic Strategies for C5-Sugars and Biomass Hemicellulose Conversion Towards Furfural Production." Production of Platform Chemicals from Sustainable Resources , no. : 45-80.

Chapter
Published: 23 May 2017 in Hydrothermal Processing in Biorefineries
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Supercritical fluids have been receiving an increasing attention in biorefinery processes due to guarantying high reaction yields and selectivities. In addition, supercritical fluids, especially CO2, permit to avoid the use of additional catalyst simplifying downstream processing. These benefits are a result of their unique physicochemical proprieties, which are easily adjustable just by slight changes of operational temperature and pressure. This chapter provides state-of-the-art about the biomass processing in hydrothermal media with supercritical CO2 within biorefinery context. The biomass pretreatment with water is addressed briefly since it is inherently associated. In an effort to demonstrate the employment of supercritical CO2 as a catalyst in hydrothermal pretreatment, the knowledge concerning phase behaviour of CO2 and water mixture is reported. In particular, the role of supercritical CO2 in the perspective of enzymatic valorisation of cellulose is explored thoroughly. This chapter addresses also the importance of supercritical CO2 addition to hydrothermal technologies in the processing of hemicellulose and lignin into C5-sugars and phenolic products, respectively. Finally, the critical outlook and perspectives of high-pressure biomass pretreatment with supercritical CO2 is given.

ACS Style

Ana Rita C. Morais; Rafal M. Lukasik. Hydrothermal Pretreatment Using Supercritical CO2 in the Biorefinery Context. Hydrothermal Processing in Biorefineries 2017, 353 -376.

AMA Style

Ana Rita C. Morais, Rafal M. Lukasik. Hydrothermal Pretreatment Using Supercritical CO2 in the Biorefinery Context. Hydrothermal Processing in Biorefineries. 2017; ():353-376.

Chicago/Turabian Style

Ana Rita C. Morais; Rafal M. Lukasik. 2017. "Hydrothermal Pretreatment Using Supercritical CO2 in the Biorefinery Context." Hydrothermal Processing in Biorefineries , no. : 353-376.