Article
Green & Sustainable Science & Technology
Dalma Schieppati, Alexis Dreux, Weijue Gao, Pedram Fatehi, Daria C. Boffito
Summary: This study investigated the ultrasound-assisted carboxymethylation of softwood lignins to yield water-soluble products. The results showed that ultrasound significantly improved the reaction efficiency and dispersion ability of carboxymethylated lignins.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Agricultural Engineering
Ashutosh Agarwal, Young-Tae Jo, Jeong-Hun Park
Summary: The study found that the simultaneous effect of microwave-ultrasound irradiations significantly increased the bio-oil yield from Kraft lignin depolymerization by reducing the repolymerization of reaction intermediates. This led to a higher quality and quantity of bio-oil compared to the individual microwave and ultrasound irradiation processes.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Biochemistry & Molecular Biology
Sebastian A. Mayr, Raditya Subagia, Renate Weiss, Nikolaus Schwaiger, Hedda K. Weber, Johannes Leitner, Doris Ribitsch, Gibson S. Nyanhongo, Georg M. Guebitz
Summary: Modification of kraft lignin (KL) typically involves harsh and energy-intensive processes. This study evaluated the potential of the bacterial laccase CotA for oxidizing KL under mild conditions, showing that the origin and purity of KL significantly impact the efficiency of oxidation. Under the tested conditions, it was observed that medium ash content hardwood KL (MA_H) showed the highest susceptibility to CotA oxidation, suggesting a potential method for producing sustainable resins and adhesives.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Chemistry, Multidisciplinary
Yukihiro Arakawa, Takayuki Kawahara, Keiji Minagawa, Yasushi Imada
Summary: This study focused on the preparation of N5-modified alloxazinium salts and evaluated their catalytic activity and reusability in H2O2 oxidations.
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN
(2021)
Article
Agricultural Engineering
Hun Yi Shin, Seong Mu Jo, Sung-Soo Kim
Summary: A chemically mild methodology was demonstrated for obtaining decomposed lignin products through oxidative depolymerization. The oxidative depolymerization dissociated various lignin bonding structures and oxidized aliphatic hydroxyl groups of lignin, resulting in the generation of effective chromophoric moieties to enhance the UV absorption property of the resulting products.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Biochemistry & Molecular Biology
Changsomba Chang, Pratima Gupta
Summary: This study investigates a novel approach to valorize Kraft lignin using the catalyst MTO in tandem with in-situ produced H2O2 in a Microbial Electrochemical Cell (MEC). The results show selective oxidation of Kraft lignin, leading to the production of valuable feedstock chemicals and a reduction in Chemical Oxygen Demand (COD) of lignin. The study also demonstrates the high efficiency of the system in anodic wastewater treatment.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2024)
Article
Engineering, Chemical
Yang Zhao, Xinyi Zhang, Jiarui Yang, Mingyu Gao, Pengfei Yang, Qian Wang, Dianqing Li, Junting Feng
Summary: In this study, a commercial P25 (TiO2) supported Pt catalyst with phase junctions between (101) and (110) faces was prepared for the selective oxidation of glycerol. The catalyst demonstrated high glyceric acid (GLYA) yield and good stability. The research focused on understanding the electronic effects of the P25 structure on Pt, optimizing the adsorption modes, and studying the mass transfer limitations under different conditions. The findings provide insights for improving the catalytic performance of Pt/P25 catalysts in glycerol oxidation reactions.
Article
Engineering, Chemical
Xin Zhang, Jing Wang, Baorong Duan, Song Jiang
Summary: The degradation of sulfamethoxazole by a combined system of ultrasound/PW12/KI/H2O2 was investigated, showing great potential for removal of organic pollution and environmental purification.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Construction & Building Technology
Ren Wei, Yuya Sakai, Naoki Ogiwara, Sayaka Uchida
Summary: This study investigates the microstructural changes between concrete and kraft lignin (KL) in botanical concrete (BC), and the effects of temperature and air on BC performance. The results show that condensation reactions between concrete and KL fragments are the most influential factor in improving BC strength.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Engineering, Chemical
Daniel Nunez, Paula Oulego, Sergio Collado, Francisco A. Riera, Mario Diaz
Summary: This study evaluated different integrated processes to recover short-chain organic acids from Kraft black liquor. The results showed that lignin recovery was the most suitable pre-treatment method, which improved the recovery yield of organic acids. Additionally, the optimal conditions for liquid-liquid extraction were found to be 30% trioctylamine in heptane at 40 degrees C.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Environmental Sciences
Jiaqi Huang, Mengqi Wang, Shanshan Luo, Zhili Li, Yuanyuan Ge
Summary: N-doped biochar geopolymer composite (NBGC) was successfully synthesized and exhibited excellent activity in degrading tetracycline. This composite catalyst has great potential for continuous treatment of antibiotic wastewater.
ENVIRONMENTAL RESEARCH
(2023)
Article
Polymer Science
Ana Maria Borges Honorato, Mohmmad Khalid, Antonio Aprigio da Silva Curvelo, Hamilton Varela, Samaneh Shahgaldi
Summary: This study reports a novel catalyst, P-NiFeCo/NC, for efficient electro-oxidation of kraft lignin in alkaline medium. The catalyst shows a lower overpotential and higher hydrogen production rate compared to pure alkaline medium.
Article
Materials Science, Paper & Wood
Anna Kalliola, Petteri Kangas, Iris Winberg, Tapio Vehmas, Hanna Kyllonen, Juha Heikkinen, Outi Poukka, Katariina Kemppainen, Pauliina Sjogard, Lauri Pehu-Lehtonen, Tiina Liitia
Summary: This paper presents a concept of alkali-O-2 oxidation process for producing lignin dispersants in a feasible manner at a kraft pulp mill. The process uses O-2 gas to increase the anionic charge of lignin, resulting in oxidised lignin that can be used as a concrete plasticiser or versatile dispersant. The integrated process simplifies lignin recovery, reduces the need for fresh alkali, and enables the recirculation of sodium and sulphur back to the chemical cycle.
NORDIC PULP & PAPER RESEARCH JOURNAL
(2022)
Article
Energy & Fuels
Thang Toan Vu, Young-Il Lim, Daesung Song, Kyung-Ran Hwang, Deog-Keun Kim
Summary: This study conducted an economic analysis for the conceptual design of vanillin production from Kraft lignin, showing acceptable return on investment and payback period. It should be noted that the return on investment is sensitive to the vanillin price.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Agricultural Engineering
Xiuru Su, Yingjuan Fu, Zhiyong Shao, Menghua Qin, Xiaoliang Li, Fengshan Zhang
Summary: Ethanol extraction of lignocellulosic biomass can produce low molecular weight, light-colored lignin, but with limited yield. Ultrasound-assisted ethanol extraction improves the efficiency of lignin extraction from poplar, resulting in lignin with enhanced antioxidant and UV-absorbing properties.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Review
Chemistry, Multidisciplinary
Guanfei Shen, Bruno Andrioletti, Yves Queneau
CURRENT OPINION IN GREEN AND SUSTAINABLE CHEMISTRY
(2020)
Article
Chemistry, Inorganic & Nuclear
Aurelie Rago, Charles Guerin, Eric Framery, Ludivine Jean-Gerard, Clothilde Comby-Zerbino, Philippe Dugourd, Bruno Andrioletti
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2020)
Article
Biochemistry & Molecular Biology
Charles Guerin, Zhan Zhang, Ludivine Jean-Gerard, Stephan Steinmann, Carine Michel, Bruno Andrioletti
Article
Chemistry, Multidisciplinary
Aurelie Rago, Eric Framery, Bruno Andrioletti
Summary: Triazole-Appended Dipyrromethenes (TADs) are a highly tunable and versatile family of ligands, with well-designed complexes incorporating a macrocyclic TAD member proving efficient in the carbonation of epoxides under low CO2 pressure and high temperature. Preventing dimerization is critical to restoring the catalytic activity of the zinc complex.
JOURNAL OF PORPHYRINS AND PHTHALOCYANINES
(2022)
Article
Chemistry, Applied
Lydia A. Heinrich, Catherine Goux-Henry, Jean-Dominique Paoli, Frank Cogordan, Bruno Andrioletti
Summary: The study found that different monomers have varying effects on the weatherability of coatings, with sebacic acid and 1,3-propanediol decreasing stability, while 1,2-propanediol and phthalic anhydride accelerating the formation of new crosslinks.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Chemistry, Inorganic & Nuclear
Zhan Zhang, Guochuan Yin, Bruno Andrioletti
Summary: Lignin, the second most abundant component in biomass, can be depolymerized for the production of highly functionalized aromatic chemicals. This review focuses on various transition metal complexes used for lignin transformation and discusses challenges and future directions.
TRANSITION METAL CHEMISTRY
(2022)
Article
Biochemistry & Molecular Biology
Guanfei Shen, Bruno Andrioletti
Summary: Researchers have been focusing on the development of more sustainable and eco-friendly polymers over the past decades. One strategy is to substitute the toxic reagents/monomers used in polyurethane chemistry with hydroxylated polyurethanes (PHURs). However, the synthesis of some PHURs is still not sustainable due to the use of environmentally damaging monomers and/or solvents. This study reports on the use of more sustainable conditions to synthesize biobased polycarbonates and demonstrates the effectiveness of renewable deep eutectic solvents (DESs) as solvents and organocatalysts.
Article
Materials Science, Multidisciplinary
Antoine Bard, Sylvain Minot, Clementine Symonds, Jean-Michel Benoit, Alban Gassenq, Francois Bessueille, Bruno Andrioletti, Camilo Perez, Kevin Chevrier, Yannick De Wilde, Valentina Krachmalnicoff, Joel Bellessa
Summary: A new method of hybridizing two materials and transferring energy through a surface plasmon over micrometric distances is proposed in this paper. The energy transfer mechanism is observed and evaluated through experiments.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Biochemistry & Molecular Biology
Rachel Pflieger, Manuel Lejeune, Micheline Draye
Summary: This study investigates the sonochemical degradation of [BEPip][NTf2] ionic liquid and its correlation with sonoluminescence spectra and viscosity, as well as effects of water presence. The results show that the initial evolution of sonoluminescence intensity is closely related to liquid viscosity. Furthermore, the presence of water enhances sonoluminescence and accelerates the degradation process.
Article
Food Science & Technology
Alexandre Vandeponseele, Micheline Draye, Christine Piot, Damien Bernard, Philippe Fanget, Gregory Chatel
Summary: Water content in spent coffee grounds can act as a co-solvent in supercritical CO2 extraction, influencing the extraction of both lipids and polar molecules. While pressure has the most significant effect on lipid extraction, moisture content plays a more important role in the extraction of polar molecules, mainly caffeine.
Article
Plant Sciences
Vanille Quinty, Cyril Colas, Rouba Nasreddine, Reine Nehme, Christine Piot, Micheline Draye, Emilie Destandau, David Da Silva, Gregory Chatel
Summary: Polygonum cuspidatum is a problematic invasive plant species with negative consequences. Recycling its abundant plant waste could be a sustainable management solution. This study explores the cosmetic potential of different parts of P. cuspidatum and evaluates their activities on various targets.
Article
Chemistry, Multidisciplinary
Aurelie Rago, Sylvain David, Eric Framery, Olivier Maury, Bruno Andrioletti
Summary: The syntheses of new bis-triazolyl BODIPY dyes with high quantum yields are reported. A key step in the synthetic approach involves alkene metathesis after templating the bis-triazolyl dipyrromethenes with Zn, leading to the formation of catenane structure instead of mono-macrocyclic structure. The optical properties of the open, macrocyclic, and [2]-catenane derivatives are compared. Interestingly, the fluorescence of the catenane analogue is quenched while the fluorescence of both the open and macrocyclic structures shows excellent properties in dichloromethane. However, the fluorescence of the catenane can be restored in toluene. A plausible explanation for this strong solvent effect is proposed.
JOURNAL OF PORPHYRINS AND PHTHALOCYANINES
(2023)
Article
Green & Sustainable Science & Technology
Alexandre Vandeponseele, Micheline Draye, Christine Piot, Gregory Chatel
Summary: This study explores the potential of recovering caffeine from spent coffee grounds, considering various parameters such as brewing methods, storage conditions, extraction parameters, and purification parameters. The results show that extracting caffeine from spent coffee grounds is a promising and straightforward method that aligns with an established market.
CLEAN TECHNOLOGIES
(2021)
Article
Chemistry, Multidisciplinary
Tony Cousin, Gregory Chatel, Bruno Andrioletti, Micheline Draye
Summary: The identification of intermediates and by-products formed during the oxidative cleavage of cycloalkenes has led to the proposal of a comprehensive reaction scheme. The mechanism explains the pathways for the formation of dicarboxylic acids and short chain diacids, providing a useful tool for scientists aiming to establish environmentally friendly conditions for this process.
NEW JOURNAL OF CHEMISTRY
(2021)
