Article
Engineering, Environmental
Lucie Pidoux, Holly Shorney-Darby, Elisabeth Vaudevire, Bram Martijn, Peter Jarvis, Irene Carra
Summary: Reducing regeneration frequency allows for the reuse of ion exchange resin and reduces the generation of brine and waste. The study suggests that both electrostatic interactions and admicelle formation are separation mechanisms. However, repeated use of the resin leads to changes in resin loading and increased risk of corrosion. Reusing the bicarbonate-form resin every 5 cycles achieves the most sustainable option.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Physical
Miao Chang, Tongan Yan, Yan Wei, Jie-Xin Wang, Dahuan Liu, Jian-Feng Chen
Summary: By utilizing a single-molecule SF6 trap in a metal-organic framework, efficient SF6 recovery and separation have been achieved. This trap exhibits unprecedented selectivity and adsorption capacity, making it an ideal adsorbent.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Applied
Stanislav Ferdov, Boris Shivachev, Nikola Drenchev, Konstantin Hadjiivanov, Svetlana Simova, Rositsa Titorenkova, Nadia Petrova, Mihail Tarassov, Rositsa Nikolova
Summary: The variable ratio of tetrahedrally coordinated atoms with different valences in the zeolite framework can regulate properties like adsorption, separation, and catalysis by determining the amount and distribution of extraframework cations. However, this control is not possible for stoichiometric microporous mixed coordination polyhedra silicates. In this study, we discovered a synthesis condition that reduces or eliminates alkali cations in the 12-ring channels of a copper silicate while preserving the original framework stoichiometry. Interestingly, even in the absence of cation positions, these emptied channels can still exchange ions and accommodate significant amounts of Cs+ and Sr2+ ions.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Biochemistry & Molecular Biology
Andzelika Gesikiewicz-Puchalska, Michal Zgrzebnicki, Beata Michalkiewicz, Agnieszka Kalamaga, Urszula Narkiewicz, Antoni W. Morawski, Rafal Wrobel
Summary: Zeolite 13X (NaX) was modified through ion-exchange with alkali and alkaline earth metal cations to enhance CO2 adsorption. The highest adsorption capacities were achieved with materials containing alkali metals, particularly the Li0.61Na0.39X form of zeolite. Exchange with alkaline earth metals led to decreased surface area and micropore volume, impacting CO2 adsorption. Interestingly, divalent cations resulted in the formation of mesopores.
Article
Engineering, Environmental
Davide Pinelli, Alessia Foglia, Francesco Fatone, Elettra Papa, Carla Maggetti, Sara Bovina, Dario Frascari
Summary: This study experimentally verified a new method for effectively recovering ammonium from municipal wastewater. The selected sorbent demonstrated high performance and stable behavior during continuous use. The results of the study indicate significant potential for this method in the context of a circular economy approach.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Chemical
Michael Edgar, Treavor H. Boyer
Summary: This study aimed to evaluate the impact of organic acids, natural organic matter (NOM), and buffer solutions on biological ion exchange (BIEX), and found that higher molecular weight and carbohydrate compositions in organic acids and NOM can enhance the separation of NO3- on ion exchange resins. Batch denitrification experiments further revealed that inorganic ions and organic compounds facilitate NO3- displacement from the resins and subsequent aqueous phase denitrification.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Jakub Mokrzycki, Monika Fedyna, Mateusz Marzec, Rafal Panek, Justyna Szerement, Lidia Marcinska-Mazur, Renata Jarosz, Tomasz Bajda, Wojciech Franus, Monika Mierzwa-Hersztek
Summary: Removal of phosphate ions from aqueous environment is a global concern. Zeolite NaX derived from fly ash was modified by ion exchange and impregnation to improve its adsorption capacity. The results showed that ion exchange significantly improved the adsorption capacity of zeolite X, while impregnated zeolites also exhibited good adsorption performance.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Engineering, Environmental
Yan-Ling Guo, Hai-Yan Sun, Xi Zeng, Tian-Tian Lv, Yue-Xin Yao, Ting-Hui Zhuang, Mei-Ling Feng, Xiao-Ying Huang
Summary: Sr-90 is a dangerous artificial radionuclide that is difficult to remove from complex aqueous environments. This study focused on the efficient removal of Sr2+ ions using potassium phosphatoantimonate (1D-K2SbPO6), which showed excellent adsorption capacity and selectivity for Sr2+ ions. The mechanism of Sr2+ removal was found to be ion exchange between Sr2+ and easily exchangeable K+ ions in K2SbPO6. This work provides a potential solution for radionuclide remediation using antimonate(V)-based ion exchange materials.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Chao Tang, Mykola P. Bondarenko, Andriy Yaroshchuk, Merlin L. Bruening
Summary: This study demonstrates that high selectivity ion separations can be achieved through counter-flow electromigration in track-etched membranes. Numerical simulations based on the extended Nernst-Planck equation highlight the importance of high Peclet numbers, high current-to-flow ratios, and uniform current distributions for achieving high selectivities.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Multidisciplinary Sciences
Ryan M. DuChanois, Mohammad Heiranian, Jason Yang, Cassandra J. Porter, Qilin Li, Xuan Zhang, Rafael Verduzco, Menachem Elimelech
Summary: This study investigates the impact of ion-membrane binding energy on the permeability of polymeric membranes, demonstrating that tailoring the binding energy and minimizing the membrane thickness can significantly enhance the selectivity of the membranes.
Article
Biochemistry & Molecular Biology
Chao Tang, Andriy Yaroshchuk, Merlin L. Bruening
Summary: Membrane-based ion separation techniques are crucial for producing pure salts, but require careful control of experimental conditions, especially concentration polarization, to achieve high selectivity.
Article
Materials Science, Multidisciplinary
Bernd G. K. Steiger, Inimfon A. Udoetok, Omar Faye, Lee D. Wilson
Summary: Modification of biomaterials for controlled removal of sulfate is important for global water security, and in this study, ternary metal composites with varied counterions were prepared and characterized to study their adsorption properties towards inorganic and organic anions in aqueous media. The presence of different counterions affected the equilibrium and kinetic uptake of sodium sulfate and organic dyes, demonstrating a potential for tailored biopolymer adsorbents with switchable counterions.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Chemistry, Applied
Yongbiao Sun, Jianfeng Tang, Guangyan Li, Yihuai Hua, Yunbing Sun, Suyang Hu, Xiaojin Wen
Summary: In this study, Li+, K+, Mg2+, and Ca2+-exchanged X zeolites were prepared as efficient adsorbents for the purification of liquefied natural gas (LNG). The adsorption, separation, and regeneration characteristics of the samples were investigated. The results showed that Li13X and Ca13X exhibited high adsorption capacities, while K13X had a high separation factor. Ca13X showed the highest separation factor and the lowest methane adsorption capacity in dynamic adsorption.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Engineering, Chemical
Dong Ding, Andriy Yaroshchuk, Merlin L. Bruening
Summary: Separation of monovalent and multivalent ions is important for various processes, and this study demonstrates that cation-exchange membranes coated with multilayer polyelectrolyte films can effectively separate monovalent ions with high selectivity. Furthermore, proper current control and the use of protonated poly(allylamine)/poly(4-styrenesulfonate) multilayers can enhance the separation efficiency.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Green & Sustainable Science & Technology
Lei Wang, Mohammad Torkamanzadeh, Ahmad Majed, Yuan Zhang, Qingsong Wang, Ben Breitung, Guang Feng, Michael Naguib, Volker Presser
Summary: Electrochemical ion separation is a promising technology for recovering valuable ionic species from water. This study investigates the selective behavior of Ti3C2Tz MXene towards alkali and alkaline earth cations. The results show that Ti3C2Tz exhibits a time-dependent selectivity feature, preferring K+ in the early stage and ultimately preferring Ca2+ and Mg2+.
ADVANCED SUSTAINABLE SYSTEMS
(2022)
Article
Chemistry, Applied
Sandra Victor-Roman, Enrique Garcia-Bordeje, Javier Hernandez-Ferrer, Jose M. Gonzalez-Dominguez, Alejandro Anson-Casaos, Adrian M. T. Silva, Wolfgang K. Maser, Ana M. Benito
Article
Biochemistry & Molecular Biology
Jose M. Gonzalez-Dominguez, Alejandro Anson-Casaos, Laura Grasa, Luis Abenia, Alba Salvador, Eduardo Colom, Jose E. Mesonero, J. Enrique Garcia-Bordeje, Ana M. Benito, Wolfgang K. Maser
Article
Biophysics
L. Vallan, J. Hernandez-Ferrer, L. Grasa, J. M. Gonzalez-Dominguez, M. T. Martinez, B. Ballesteros, E. P. Urriolabeitia, A. Anson-Casaos, A. M. Benito, W. K. Maser
COLLOIDS AND SURFACES B-BIOINTERFACES
(2020)
Article
Chemistry, Physical
A. Anson-Casaos, J. Hernandez-Ferrer, L. Vallan, H. Xie, M. Lira-Cantu, A. M. Benito, W. K. Maser
Summary: Various types of carbon dots synthesized using different methods show improved performance in photovoltaics and photoelectrochemical water splitting. Nitrogen carbon dots increase the open circuit voltage of perovskite solar cells, while thiol-functionalized and butyl chain-functionalized carbon dots exhibit better photocurrent in water splitting. The modified electrode is stable under continuous operation, with improved incident photon to current conversion efficiency.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Clara Carrera, Jose Miguel Gonzalez-Dominguez, Francisco Javier Pascual, Alejandro Anson-Casaos, Ana M. Benito, Wolfgang K. Maser, Enrique Garcia-Bordeje
JOURNAL OF PHYSICAL CHEMISTRY C
(2020)
Article
Chemistry, Multidisciplinary
Alejandro Anson-Casaos, Olga Sanahuja-Parejo, Javier Hernandez-Ferrer, Ana M. Benito, Wolfgang K. Maser
Article
Materials Science, Composites
R. Belhimria, Z. Samir, S. Boukheir, S. Soreto Teixeira, M. E. Achour, A. Anson-Casaos, J. M. Gonzalez-Dominguez, L. C. Costa, M. El Hasnaoui
Summary: The study synthesized binary and ternary composites using a polyester matrix reinforced with carbon nanotubes (CNT) and graphite (Gt) inclusions. Thermal analyses were conducted to observe changes in glass transition temperatures and degradation temperatures. Dielectric measurements showed that adding CNT particles to the binary system significantly improved the dielectric permittivity, leading to enhanced interfacial polarization of the host matrix. The frequency dependence of electrical modulus spectra revealed a Maxwell-Wagner-Sillars dielectric relaxation process following the Cole-Davidson approach.
JOURNAL OF COMPOSITE MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Jose M. Gonzalez-Dominguez, Alejandro Baigorri, Miguel A. Alvarez-Sanchez, Eduardo Colom, Belen Villacampa, Alejandro Anson-Casaos, Enrique Garcia-Bordeje, Ana M. Benito, Wolfgang K. Maser
Summary: This study focuses on the development of water-based inks made of a ternary system (graphene oxide, carbon nanotubes, and nanocellulose) using an autoclave method to obtain low-viscosity inks, high-viscosity pastes, and self-standing hydrogels. Through spray- or rod-coating technologies, the resulting inks and pastes can be processed into conductive films, and the hydrogels can be turned into aerogels.
Article
Chemistry, Physical
Isabel Ciria-Ramos, Nuria Navascues, Fatou Diaw, Clarisse Furgeaud, Raul Arenal, Alejandro Anson-Casaos, Marta Haro, Emilio J. Juarez-Perez
Summary: The pyrolysis of formamidinium halide salts can result in a new type of amorphous carbon nitride material with a high nitrogen content. The research identified the main building block of this material and explored the temperature-dependent mechanisms affecting its properties, while also foreseeing its potential value as a native passivation layer in perovskite solar cells.
Article
Biophysics
J. M. Gonzalez-Dominguez, L. Grasa, J. Frontinan-Rubio, E. Abas, A. Dominguez-Alfaro, J. E. Mesonero, A. Criado, A. Anson-Casaos
Summary: This study found that the functionalized complex of single-walled carbon nanotubes and type-II nanocrystalline cellulose showed higher activity against colon cancer cells in vitro, and this effect was associated with the presence of fluorescein rather than capecitabine.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2022)
Article
Nanoscience & Nanotechnology
L. Cano-Casanova, A. Anson-Casaos, J. Hernandez-Ferrer, A. M. Benito, W. K. Maser, N. Garro, M. A. Lillo-Rodenas, M. C. Roman-Martinez
Summary: In this study, a series of nanostructured boron-TiO2 photocatalysts were synthesized and the effects of boron loading and crystallization temperature on their properties and catalytic performance were investigated. The results showed that the presence of boric acid affected the formation of the nanostructure, and the best-performing catalysts had lower boron loading.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Physical
Eduardo Colom, Javier Hernandez-Ferrer, Alejandro Galan-Gonzalez, Alejandro Anson-Casaos, Mario Navarro-Rodriguez, Elisa Palacios-Lidon, Jaime Colchero, Javier Padilla, Antonio Urbina, Raul Arenal, Ana M. Benito, Wolfgang K. Maser
Summary: Nanoparticles of conjugated polymers in contact with graphene oxide sheets were prepared using a miniemulsion synthesis approach. This led to a unique conformation of the polymer chains and an unprecedented charge transfer between the two constituents. The resulting nanohybrid enabled direct and efficient charge extraction through the graphene oxide sheets.
CHEMISTRY OF MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Jose Carlos Ciria, Alejandro Anson-Casaos, Ana M. Benito, Wolfgang K. Maser
Summary: Modeling the sedimentation process using fundamental equations and a mathematical algorithm provides a rational concept to optimize centrifugation protocols for separating mixtures containing nanoparticles of different shapes.
Article
Chemistry, Physical
A. Anson-Casaos, J. C. Ciria, O. Sanahuja-Parejo, S. Victor-Roman, J. M. Gonzalez-Dominguez, E. Garcia-Bordeje, A. M. Benito, W. K. Maser
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2020)
Article
Chemistry, Multidisciplinary
Ana Santidrian, Olga Sanahuja, Belen Villacampa, Jose Luis Diez, Ana M. Benito, Wolfgang K. Maser, Edgar Munoz, Alejandro Anson-Casaos
Article
Engineering, Chemical
Qing Han, Mengqing Shi, Linkai Han, Di Liu, Mingwei Tong, Yuxin Xie, Zhonghua Xiang
Summary: Developing highly efficient bifunctional oxygen electrocatalysts is crucial for zinc-air flow batteries. Metal-organic frameworks (MOFs) and covalent organic polymers (COPs) have emerged as promising alternatives due to their designable and controllable atomic-level structures. However, their catalytic performances are limited by conductivity and catalytic activity. In this study, nanosheet FeNi-MOF and iron phthalocyanine rich COP hybrid materials are assembled through the pi-pi stacking effect to create highly efficient bifunctional electrocatalysts. The resulting catalyst exhibits superior catalytic performance and stability, making it a promising candidate for zinc-air flow batteries.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Daria Grigorash, Dmytro Mihrin, Rene Wugt Larsen, Erling H. Stenby, Wei Yan
Summary: The article introduces a new approach to describe the cross-association between molecules, allowing for the simulation of weakly bound molecular complexes with different conformations in mixtures. By incorporating this approach into the equation of state, accurate predictions of vapor-liquid equilibrium and liquid-liquid equilibrium can be made. The new method is validated through experiments on alcohol and acid mixtures, with the results compared to experimental data, demonstrating its accuracy and reliability.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Mohammed Al-Sharabi, Daniel Markl, Vincenzino Vivacqua, Prince Bawuah, Natalie Maclean, Andrew P. E. York, Axel Zeitler
Summary: This study used terahertz pulsed imaging to investigate the transport process of different solvents into ceramic catalytic materials. The results showed that the heating rate of the samples influenced the water transport rate, while the viscosity of 1-octanol slowed down its transport.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Chukwunonso Anyaoku, Sati Bhattacharya, Rajarathinam Parthasarathy
Summary: This study aimed to enhance understanding of settling dynamics in viscoelastic fluids by developing a semi-empirical correlation and a dimensionless ratio, which accurately described the characteristics of settling suspensions.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Antti I. Koponen, Janika Viitala, Atsushi Tanaka, Baranivignesh Prakash, Olli-Ville Laukkanen, Ari Jasberg
Summary: This study focuses on the development of foam application chemicals for the paper and board industry. The research explores the rheology of the polyvinyl alcohol foam used in the process. Measurements were conducted to determine the foam viscosity and slip flow. The results suggest that slip flow contributes significantly to the total flow rate, and the obtained viscosity and slip models provide a solid foundation for industrial processes.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Dalei Sun, Jinghui Cai, Yating Yang, Zhiwu Liang
Summary: In this study, Fe-doped alpha-Bi2O3 catalysts with different Fe/Bi molar ratios were synthesized and utilized in the carbonylation of isobutyl amine with CO2. The results showed that Fe doping significantly enhanced the catalytic abilities of alpha-Bi2O3.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Yuan Tian, Xinxin Wang, Yanrong Liu, Wenping Hu
Summary: This paper predicts the solubility of nitrogen gas in ionic liquids (ILs) using two quantitative structure-property relationship (QSPR) models. By combining machine learning methods and ionic fragments contribution method, the accuracy and reliability of the prediction models are improved.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Liwang Wang, Wei Liu, Pan Yang, Yulong Chang, Xiaoxu Duan, Lingyu Xiao, Yaoming Hu, Jiwei Wu, Liang Ma, Hualin Wang
Summary: This study investigates the effective phase interfacial area (ae) of hydro-jet cyclones at different injection angles. The results show that a 45 degrees upward incidence angle yields the most favorable flow field characteristics for efficient mass transfer. The significant enhancement in ae of the hydro-jet cyclones offers the advantage of reducing equipment volume and cost savings.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Chuanjun Wu, Jiangzhi Chen, Jiyue Sun, I-Ming Chou, Shenghua Mei, Juezhi Lin, Lei Jiang
Summary: In this study, the solubility of H2S hydrate in water was measured using Raman spectroscopy. The results showed that the solubility increases with temperature under certain equilibrium conditions, and the solubility also depends on pressure and temperature under different equilibrium conditions. A thermodynamic model based on the van der Waals-Platteeuw theory was developed to predict the solubility, demonstrating its accuracy.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Lorenzo Brivio, Serena Meini, Mattia Sponchioni, Davide Moscatelli
Summary: This study investigates the influence of three main parameters and proposes a kinetic model to predict the optimal operating conditions for high yield of dimethyl terephthalate (DMT) in the chemical recycling process of polyethylene terephthalate (PET).
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Hongju Lin, Fanhui Liao, Yanchang Chu, Mingyu Xie, Lun Pan, Yuanyuan Wang, Lijian Leng, Donghai Xu, Le Yang, Gangfeng Ouyang
Summary: A honeycomb NiCo/C-Na catalyst with a micro-meso-macroporous structure has been fabricated and shown to have significantly higher catalytic activity for the decarboxylation of fatty acids. It also proves to be efficient in upgrading sludge HTL bio-crude, resulting in a biofuel with decreased viscosity and increased density.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Xiaoxian Li, Rui Li, Min Lin, Mingde Yang, Yulong Wu
Summary: A series of coated non-noble metal porous carbon catalysts were synthesized and applied to the aqueous-phase deoxygenation of algal bio-oil. One of the catalysts showed excellent deoxygenation selectivity and catalytic activity at 250 degrees C. The catalyst exhibited good hydrothermal stability and the reaction mechanism was proposed based on product analysis and active site analysis.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
M. V. Chudakova, M. V. Popov, P. A. Korovchenko, E. O. Pentsak, A. R. Latypova, P. B. Kurmashov, A. A. Pimenov, E. A. Tsilimbaeva, I. S. Levin, A. G. Bannov, A. V. Kleymenov
Summary: A series of catalysts with different potassium contents were prepared using solution combustion synthesis and characterized using various techniques. The results showed that the potassium content affected the phase composition and texture of the catalysts. The addition of a small amount of potassium resulted in a change in particle size distribution, leading to higher hydrogen yield. The Ni-1%K2O/Al2O3 catalyst exhibited the highest hydrogen yield at temperatures of 675 and 750 degrees Celsius.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Aliakbar Roosta, Nima Rezaei
Summary: In this study, we modified the electrolyte cubic plus association equation of state (e-CPA EoS) and integrated it with two electrical conductivity models to estimate the electrical conductivity of 11 monovalent electrolyte solutions in water. The modified e-CPA model demonstrated better performance and the hybridization with electrical conductivity models resulted in two predictive models for estimating the electrical conduction of dilute and concentrated electrolyte solutions. These predictive models showed relative average percentage deviations (AARD) of 11.15% and 13.87% over wide ranges of temperature and electrolyte concentration.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Haoren Niu, Jianzheng Wang, Qingzhu Jia, Qiang Wang, Jin Zhao, Fangyou Yan
Summary: A study developed two quantitative structure-property relationship models for the complexation performance of alpha- and beta-cyclodextrins and validated their stability and predictive ability through internal and external validation. The models showed robustness and satisfactory performance, as demonstrated by the experimental results and model validations. These models can effectively predict the binding constants between cyclodextrins and various types of molecules, providing valuable tools for cyclodextrin design.
CHEMICAL ENGINEERING SCIENCE
(2024)
