Article
Polymer Science
Mengdi Zhuang, Yiwen Bao, Juncheng Chen, Hangxun Xu
Summary: A novel synthesis strategy is reported for the fabrication of solid-state stretchable ionic conductors by seamlessly incorporating layered double hydroxide (LDH) nanosheets into a poly(ionic liquid) (PIL) matrix. The LDH nanosheets form effective electrostatic interactions with the PIL chains, resulting in solid-state ionic conductors with enhanced mechanical strength and toughness without compromising the ionic conductivity. The PIL-LDH composite exhibits high stretchability (>600%), ultra-low temperature tolerance (-81 degrees C), excellent transparency, and superior ionic conductivity (>3 mS cm(-1)).
Article
Chemistry, Physical
Edward Tatenda Marondedze, Muhammad Mohsin Azim, Bice S. Martincigh, Annegret Stark
Summary: In this study, a binary system of IL-OH and IL-Ester ionic liquids (ILs) was prepared and characterized. The physico-chemical properties such as density, viscosity, thermal stability, and refractive index were determined for the binary system. The addition of IL-Ester increased the viscosity and refractive index, while decreasing the density and thermal stability. The study also provided insights into the mixing behavior and interactions among these binary mixtures.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Thermodynamics
Kazuyoshi Kaneko, Kyohei Kitawaki, Shuji Hattori, Tomoyoshi Mori, Yukihiro Yoshimura, Akio Shimizu
Summary: The purpose of this study is to investigate the changes in the solution structure and interaction of the propylammonium nitrate (PAN)/water system in response to temperature and water concentration. The results show that PAN forms a more ordered structure when mixed with water, despite the decrease in intermolecular interaction. The increase in temperature leads to an increase in attractive intermolecular interaction and a transition from an ordered to a disordered structure.
JOURNAL OF CHEMICAL THERMODYNAMICS
(2023)
Article
Chemistry, Physical
Yuqiu Chen, Baoliang Peng, Georgios M. Kontogeorgis, Xiaodong Liang
Summary: In this study, a nonlinear model that combines the group contribution method with artificial neural network is proposed to predict the viscosity of IL-water mixtures. The model shows reliable prediction performance and outperforms the linear mixed model.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Applied
Jin Chen, Xixi Zeng, Ling Chen
Summary: The fully green and renewable choline amino acid ionic liquid [Cho][Gly] was explored as a solvent for starch, showing different regulation effects on the disaggregation behaviors of starch at different mixtures ratios with water.
CARBOHYDRATE POLYMERS
(2021)
Article
Mechanics
Yoav Tsori
Summary: We describe the phenomenon of electrolubrication in liquid mixtures between two charged surfaces. The effective viscosity decreases significantly when a field is present. This reduction is caused by field-induced phase separation, resulting in the formation of two low-viscosity lubrication layers at the surfaces. These layers allow for greater strain at a given stress. The extent of this effect depends on the viscosity difference between the liquids, volume fraction of the less viscous liquid, gap size between the surfaces, and applied potential.
Article
Chemistry, Analytical
Qiao Feng Wang, Yan Qiu Zhao, Jiang Bing Sun, Jun Zhou
Summary: A novel reinforced cloud point extraction coupled with ionic liquid (RCPE-IL) method was developed for the preconcentration and extraction of five monoterpene glycosides in Paeonia suffruticosa flower samples, achieving satisfactory results in terms of linear range, calibration curve correlation coefficients, limit of detection, and recoveries.
MICROCHEMICAL JOURNAL
(2021)
Article
Environmental Sciences
Yijie Wang, Liming Hu
Summary: This study presents a novel theoretical model for predicting the soil freezing characteristic curve (SFCC) by calculating the chemical potential and respective pressures of soil water and ice. The model captures the differences in freezing behaviors between adsorbed and capillary water. Experimental measurements confirmed the validity of the model, which outperformed the conventional method in predicting SFCC for soil with high adsorbed water content. The model provides insights into the mechanisms of soil water freezing and offers a theoretical framework for analyzing and predicting frozen soil behaviors.
WATER RESOURCES RESEARCH
(2023)
Article
Chemistry, Physical
Jing Hua, Marcus Bjorling, Roland Larsson, Yijun Shi
Summary: Superlubricity between steel surfaces lubricated by mixtures of [Cho][Pro] ionic liquid and glycerol aqueous solution has been achieved, even under humidity between 7 and 9% RH. The addition of 3wt% [Cho][Pro] helps to maintain enough water content for a thin water layer at the interface, leading to lower friction. Interestingly, humidity can be used to control the lubrication state between superlubricity and non-superlubricity.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Agricultural Engineering
Jose A. Perez-Pimienta, Rocio M. Garcia-Lopez, Hugo O. Mendez-Acosta, Victor Gonzalez-Alvarez, Blake A. Simmons, Jorge A. Mendoza-Perez, Jorge Arreola-Vargas
Summary: This study evaluated the impact of three diluted ionic liquids on the structure and sugar production of Agave bagasse, with choline lysinate [Ch][Lys] showing the best performance. It not only offered the highest sugar yields, but also can be used in a mix with water for similar results. The enzymatic hydrolysate from [Ch][Lys] pretreated Agave bagasse demonstrated promising methane production potential, maintaining yields regardless of purity level used for pretreatment.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Engineering, Chemical
Praveenkumar Sappidi, Jason E. Bara, C. Heath Turner
Summary: All-atom molecular dynamics simulations reveal strong molecular-level migrations in mixtures of different ionic liquids, primarily involving anion species. Mixed anions lead to significant increases/decreases in radial distribution function peak heights compared to systems with single anions, while cation mixing has a relatively minor impact. The tendency of [BF4] anions to displace [Tf2N] anions in mixtures is observed in relation to both [BMIM+] and [ZMIM(+)].
CHEMICAL ENGINEERING SCIENCE
(2021)
Article
Engineering, Environmental
Qiuyu Xu, Mohan Hou, Lifang Wang, Xuepeng Zhang, Lifang Liu
Summary: This study utilizes starch/polyvinyl alcohol (PVA) dual-network hydrogel as a substrate to improve the internal compatibility of hydrogels. The hydrogel exhibits high mechanical properties, anti-freezing, anti-bacterial, and electrical conductivity. The assembled hydrogel sensor effectively detects external stimulations and demonstrates high sensitivity and stability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Carlos A. Pena, Ana Soto, Hector Rodriguez
Summary: The study experimentally determined the absorption and desorption isotherms of CO2 in the ionic liquid [P-4 4 4 4][OAc] and proposed a reaction mechanism based on chemical absorption. It also identified eutectic behaviors in mixtures of [P-4 4 4 4][OAc] with its homologous halides, providing potential applications for CO2 absorption.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Thermodynamics
Duo Zhang, Yuan Wang, Xueqiang Yuan, Xiaofei Yue, Jun Liu, Weidong Liu
Summary: The freezing modes of water droplets on a cold plate surface under forced convection were experimentally studied. The formation mechanism of the peak freezing mode was analyzed, and a new peakless freezing mode was discovered. The results showed that stronger convective heat transfer on the windward side of the droplet caused the freezing droplet's solid-liquid interface to incline in the windward direction. In the peakless mode, freezing was driven by frosting around the solid-liquid interface, forming a peakless solidification slope. Increasing the airflow velocity transformed the freezing mode from peak to peakless, promoting ice nucleation on the droplet and delaying droplet solidification. The critical criterion for freezing mode transition was obtained.
APPLIED THERMAL ENGINEERING
(2023)
Article
Chemistry, Inorganic & Nuclear
Valentina Migliorati, Alice Gibiino, Andrea Lapi, Matteo Busato, Paola D'Angelo
Summary: The La3+ solvation structure in the MeOH/EAN mixtures shows great adaptability to changes in composition, transitioning from a 10-fold bicapped square antiprism geometry where nitrate anions only act as monodentate ligands to a 12-coordinated icosahedral structure in pure EAN where the nitrate anions bind the La3+ cation in both mono- and bidentate modes.
INORGANIC CHEMISTRY
(2021)
Article
Engineering, Environmental
Isaac Appelquist Loge, Peter Winkel Rasmussen, Henning Osholm Sorensen, Stefan Bruns, Tamadur AlBaraghtheh, Anders Nymark Christensen, Anders Bjorholm Dahl, Philip Loldrup Fosbol
Summary: Crystallisation fouling is a challenge in various applications and understanding the basic mechanisms is crucial in mitigating fouling. In this study, we conducted in situ investigation of dynamic effects using X-ray micro-computed tomography (mu CT) to analyze the fouling process in a steel pipe. Advanced segmentation techniques were employed to quantify the evolving fouling based on 4D images. Computational fluid dynamic simulations were performed using experimental geometries to understand the impact of pipe interface structure on reactive transport. The study identified three growth phases: initiation, expansion, and densification.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Tessa Lund Biel-Nielsen, T. Alan Hatton, Sebastian N. B. Villadsen, Jan S. Jakobsen, Jacob L. Bonde, Alfred M. Spormann, Philip L. Fosbol
Summary: The unprecedented increase in atmospheric CO2 levels requires efficient, sustainable, and cost-effective technologies for CO2 removal. Future CO2 technologies are expected to follow the trend towards electrified systems, driven by declining electricity prices, expansion of renewable energy infrastructure, and advancements in carbon electrotechnologies. Reviewing selected electrochemical technologies, further development is needed within the next decade to meet ambitious climate goals.
Article
Ecology
M. O. Akrong, A. K. Anning, G. N. D. Addico, J. N. Hogarh, A. Adu-Gyamfi, K. A. A. deGraft-Johnson, M. Ale, J. A. Ampofo, A. S. Meyer
Summary: The diversity and abundance of bacteria associated with seaweeds and seawater in Ghana's coastal areas were investigated. A total of 28 bacteria species belonging to Proteobacteria and Firmicutes were identified, with a higher diversity found on seaweeds than in seawater. The study provides important baseline information on the distribution of bacteria associated with commercially valuable seaweed species in Ghana.
MARINE BIOLOGY RESEARCH
(2023)
Article
Chemistry, Medicinal
Nora Kirsten, Julia Ohmes, Maria Dalgaard Mikkelsen, Thuan Thi Nguyen, Martina Bluemel, Fanlu Wang, Deniz Tasdemir, Andreas Seekamp, Anne S. Meyer, Sabine Fuchs
Summary: Fucoidans, sulfated and fucose-rich polysaccharides from brown seaweed, have multiple promising biological effects, including anti-inflammatory properties. In this study, high molecular weight (HMW) fucoidan extract with higher purity was found to reduce the inflammatory response of endothelial cells in cases of LPS-induced bacterial infection, indicating their potential use as an anti-inflammatory agent.
Article
Biochemistry & Molecular Biology
Signe Schram Zinck, Stefan Jarl Christensen, Ole Bandsholm Sorensen, Birte Svensson, Anne S. Meyer
Summary: In this study, the efficiency of commonly used inactivation methods, such as multistep washing and pH adjustment, in inactivating a-amylases in the presence of raw potato starch were evaluated. An effective approach using sodium hypochlorite (NaOCl) for irreversible a-amylase inactivation was demonstrated. Treatment at extreme pH followed by a neutral pH resulted in significant starch hydrolysis, and inactivation by multistep washing followed by gelatinization gave significant starch degradation compared to samples inactivated with NaOCl before the wash.
Article
Biochemistry & Molecular Biology
Lichuang Cao, Cameron J. J. Hunt, Anne S. S. Meyer, Rene Lametsch
Summary: Molecular docking and molecular dynamic simulations were used to explore the substrate preferences and catalytic mechanisms of bovine ?-glutamyltransferase (BoGGT) for L-glutamine and L-?-glutamyl-p-nitroanilide (?-GpNA) as donors, as well as the acceptor abilities for valine-glycine (Val-Gly), L-methionine, and L-leucine. The study identified crucial residues responsible for the interactions between BoGGT and donors, as well as the intermediate and acceptors, providing new insights into the substrate selectivity and catalytic mechanism of BoGGT.
Article
Engineering, Chemical
Emil Madsen, Randi Neerup, Arne Gladis, Jens K. Jorsboe, Nicolas von Solms, Philip L. Fosbol
Summary: This study compares different pressure drop correlations for packed columns and finds that, surprisingly, complicated correlations do not provide better estimates than simple equations for a system of water and atmospheric air. The study investigates the predictiveness of four different correlations on pressure drop in packed columns using experimental data.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Biotechnology & Applied Microbiology
Thore Bach Thomsen, Tobias S. Radmer, Anne S. Meyer
Summary: Plastic pollution, particularly from PET, is a significant environmental challenge. This study investigates the enzyme kinetics of PET degradation and finds that the degree of crystallinity (X-C) has a substantial impact on the enzymatic reaction rate. The mobile amorphous fraction (X-MAF) is a better descriptor for the rate of enzymatic degradation. The longer lag phase observed with increased X-C is proposed to be due to increased substrate entanglement density and unproductive enzyme binding to the crystalline regions of PET.
ENZYME AND MICROBIAL TECHNOLOGY
(2024)
Article
Energy & Fuels
Jens Kristian Jorsboe, Sai Hema Bhavya Vinjarapu, Randi Neerup, Andreas Christian Moller, Soren Jensen, Jens Abildskov, Philip Fosbol
Summary: This study utilizes a new mobile pilot plant to capture CO2 from real biogas with 30 wt% monoethanolamine (MEA). The pilot plant produces reliable steady state data and can upgrade 32 kg biogas per hour by capturing 20 kg CO2 per hour. The absorber column operates close to pinch conditions, allowing for potential process optimization and heat integration.
Article
Chemistry, Medicinal
Vy Ha Nguyen Tran, Maria Dalgaard Mikkelsen, Hai Bang Truong, Hieu Nhu Mai Vo, Thinh Duc Pham, Hang Thi Thuy Cao, Thuan Thi Nguyen, Anne S. Meyer, Thuy Thu Thi Thanh, Tran Thi Thanh Van
Summary: Ulvan, a sulfated heteropolysaccharide, was extracted from the green seaweed Ulva papenfussii. The ulvan had a yield of 15% and a sulfate content of 13.4%. It consisted of various components, with L-Rhamnose being the main component. The ulvan showed significant antitumor growth activity and was found to be safe for use.
Meeting Abstract
Cell & Tissue Engineering
Julia Ohmes, Lena M. Saure, Fabian Schuett, Maria Dalgaard Mikkelsen, Andreas Seekamp, Anne S. Meyer, Sabine Fuchs
TISSUE ENGINEERING PART A
(2023)
Article
Engineering, Environmental
Jakub Zdarta, Filip Ciesielczyk, Muhammad Bilal, Katarzyna Jankowska, Karolina Bachosz, Oliwia Degorska, Agnieszka Rybarczyk, Teofil Jesionowski, Anne S. Meyer
Summary: Synthetic hormones are dangerous pollutants that pose risks to the reproductive health of both ecosystems and humans through water, including drinking water. Traditional wastewater treatment methods are not efficient enough. In this study, a new biosystem made of CaSiO3 and laccase was designed and fabricated, and its application for the removal of the synthetic estrogen 17 alpha-ethynylestradiol (EE2) from aqueous systems was demonstrated. The biosystem achieved 100% removal efficiency and showed synergistic degradation through simultaneous adsorption and biocatalytic conversion, with enzymatic conversion dominating.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Biochemical Research Methods
Bartlomiej M. Kolaczkowski, Olga V. Moroz, Elena Blagova, Gideon J. Davies, Marie Sofie Moller, Anne S. Meyer, Peter Westh, Kenneth Jensen, Keith S. Wilson, Kristian B. R. M. Krogh
Summary: Many eukaryotic proteins are N-glycosylated with high-mannose N-glycans and alpha-1,6-mannan backbones. GH92 alpha-mannosidases release mannose residues from these N-glycans, allowing alpha-endomannanases to degrade the alpha-mannan backbone. The structure and function of a multidomain GH92 alpha-mannosidase CBM have not been characterized. This study provides insights into the structure and function of a full-length five-domain GH92 alpha-mannosidase from Neobacillus novalis, demonstrating the importance of CBMs for the overall structural integrity of the enzyme.
ACTA CRYSTALLOGRAPHICA SECTION D-STRUCTURAL BIOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Valentina N. Perna, Kristian Barrett, Anne S. Meyer, Birgitte Zeuner
Summary: Glycoside hydrolase family 29 (GH29) consists of enzymes called alpha-L-fucosidases, which catalyze the release of fucose from fucosylated glycans. These enzymes have important roles in biology. GH29 alpha-L-fucosidases can be divided into two subfamilies, GH29A and GH29B, based on their substrate specificities. However, the sequence traits that determine their substrate specificity and transglycosylation ability are not well understood.
Article
Chemistry, Multidisciplinary
Tessa Lund Biel-Nielsen, T. Alan Hatton, Sebastian N. B. Villadsen, Jan S. Jakobsen, Jacob L. Bonde, Alfred M. Spormann, Philip L. Fosbol
Summary: The unprecedented increase in atmospheric CO2 levels requires efficient, sustainable, and cost-effective technologies for CO2 removal. The future of CO2 technologies will likely be electrically-based, driven by decreasing electricity prices, renewable energy expansion, and advancements in carbon electrotechnologies. Initiatives such as electrochemical carbon capture integrated with Power-to-X applications show promise, but further development within the next decade is crucial for meeting ambitious climate goals.
