Article
Chemistry, Physical
Vicente Navarro, Angel Yustres, Andreas Jenni, Gema De la Morena, Laura Asensio, Ruben Lopez-Vizcaino, Virginia Cabrera, Paul Wersin, Urs Maeder, Eveliina Muuri, Mika Niskanen, Bukunmi Akinwunmi, Janne T. Hirvi, Tapani A. Pakkanen
Summary: The study analyzes the validity of extrapolating void ratios at high water contents using data from molecular dynamics models, and defines the variables needed to compare results from molecular dynamics and laboratory experiments. Encouraging results have contributed to confidence in the use of molecular dynamics data for modeling the macroscopic behavior of compacted sodium bentonites.
APPLIED CLAY SCIENCE
(2021)
Article
Multidisciplinary Sciences
A. L. Carmo, R. S. Angelica, S. P. A. Paz
Summary: This study investigated the influence of different cation types on the sodium deactivation of Brazilian bentonite, highlighting the key role of magnesium cations in the process.
Article
Engineering, Chemical
Haoyu Fang, Lei Gao, Xiaolei Zhou, Haoli Yan, Yunpeng Wang, Haohang Ji
Summary: This paper investigates the use of sodium lignosulfonate (SL) as a binder in the pelletization of iron ore powder. The experimental results show that the compressive strength of limonite pellets prepared with SL-based binders is highest at a preheating temperature of 1100°C, reaching 342.55 N/P, which qualifies for the subsequent iron-making process. The study also employs artificial neural networks to process data and generate predicted values, providing assistance for enterprise digitization and automation processes.
ADVANCED POWDER TECHNOLOGY
(2023)
Article
Geochemistry & Geophysics
Leandro Oliveira, Josy Osajima, Ramon Raudel Pena-Garcia, Edson Cavalcanti Silva-Filho, Maria Gardennia Fonseca
Summary: Bentonite, a clay mineral, is an effective adsorbent with unique physicochemical properties that can be improved through chemical modifications for the efficient removal of contaminants, including pharmaceutical compounds, from aquatic bodies.
Article
Materials Science, Multidisciplinary
Shuhui Zhang, Guanghui Li, Rendong Xiao, Jun Luo, Lingyun Yi, Mingjun Rao
Summary: This study focused on extracting vanadium from low-vanadium grade magnetite concentrate pellets using sodium salt, achieving a high extraction rate under optimal conditions. The research found that part of trivalent vanadium was not completely oxidized during the sodium salt roasting process. By optimizing the sodium salt roasting parameters, the production efficiency of vanadium extraction can be significantly improved.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Pharmacology & Pharmacy
Annemarie Broesder, Said Y. Bircan, Anneko B. de Waard, Anko C. Eissens, Henderik W. Frijlink, Wouter L. J. Hinrichs
Summary: The ColoPulse coating is effective for targeting drug release to the ileo-colonic region, with the sulfasalazine-caffeine method confirming drug delivery. The addition of superdisintegrants is necessary for acceptable release profiles in pellet formulations.
Article
Engineering, Geological
Mercedes Suarez, Adrian Lorenzo, Andrea Garcia-Vicente, Juan Morales, Javier Garcia-Rivas, Emilia Garcia-Romero
Summary: This study reveals that the size and defects of smectite crystals significantly affect the microporosity of bentonite. The study also shows that bentonite has a wide range of pores, from micropores to macropores.
ENGINEERING GEOLOGY
(2022)
Article
Crystallography
Jorge Luis Costafreda, Domingo Alfonso Martin
Summary: This research aimed to investigate the pozzolanic properties of bentonites found at the San Jose-Los Escullos deposit for the manufacturing of durable and environmentally compatible pozzolanic cements, mortars, and concretes. The study conducted mineralogical, petrological, chemical, and thermogravimetric analyses on the samples, showing potential for the materials to be used as quality pozzolans in construction.
Article
Food Science & Technology
R. Dolphen, P. Dhurakit, P. Thiravetyan
Summary: This study investigates the bleaching performance of different clays and finds a close correlation between the content of silica and alumina and the bleaching capacity. Sodium-bentonite treated with sulfuric acid shows high bleaching capacity, effectively removing impurities from palm oil.
JOURNAL OF OIL PALM RESEARCH
(2022)
Article
Pharmacology & Pharmacy
Laura Tiozzo Fasiolo, Michele Dario Manniello, Sabrina Banella, Laura Napoli, Fabrizio Bortolotti, Eride Quarta, Paolo Colombo, Evangelos Balafas, Nikolaos Kostomitsopoulos, Dimitrios M. Rekkas, Georgia Valsami, Paraskevi Papakyriakopoulou, Gaia Colombo, Paola Russo
Summary: Neuroinflammation in Alzheimer's disease has shed new light on the potential preventive therapeutic action of non steroidal anti-inflammatory drugs such as flurbiprofen, with nasal administration enabling direct drug access to the central nervous system. The study found that nasal powders with excipients in soft pellets were more efficient in powder delivery to the brain compared to microparticles, resulting in rapid absorption and higher bioavailability of flurbiprofen. These findings suggest that nasal administration of flurbiprofen as a powder, especially using soft pellets, may be worth further investigation for its potential in treating neuroinflammation in Alzheimer's disease.
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2021)
Article
Environmental Sciences
Qiyou Liu, Hongxu Chen, Yuhua Su, Shuo Sun, Chaocheng Zhao, Xiuxia Zhang, Yingying Gu, Lin Li
Summary: We prepared SA/GO/C5 immobilized gel pellets by embedding efficient crude oil degrading bacteria Bacillus C5 in the SA/GO composite material. The addition of SA/GO/C5 significantly promoted the removal of crude oil in soil, reaching 64.92% after 30 days, which was 2.1 times the removal rate of C5. The study demonstrated that SA/GO/C5 is an effective method for remediating crude oil-contaminated soil.
ENVIRONMENTAL RESEARCH
(2023)
Article
Chemistry, Applied
U. Colombi, L. Sanarica, E. Pargoletti, C. Pisarra, F. Manzoni, G. Cappelletti
Summary: In this study, we demonstrated that bentonites can effectively reduce the content of biogenic amines (BAs) in wine, especially putrescine. Kinetic and thermodynamic studies were conducted on two commercially available bentonites, which achieved approximately 60% removal of putrescine through physisorption mechanism at an optimal concentration of 0.40 g dm-3. Both bentonites also showed promising results in more complex systems, although the adsorption of putrescine was lower due to competition with other molecules typically present in wines, such as proteins and polyphenols. Nevertheless, we managed to reduce the putrescine content below 10 ppm in both red and white wines.
Article
Green & Sustainable Science & Technology
Jie Fu, Xiao Mao, Asif Ali Siyal, Yang Liu, Wenya Ao, Guangqing Liu, Jianjun Dai
Summary: Biomass pelletization technology has attracted significant interest, with pyrolyzed pellets showing a wide range of applications. Pyrolysis of furfural residue pellets at different temperatures resulted in pellets with varying physical and chemical properties, with higher energy densities observed at 450, 650, and 850 degrees C. Different adsorption values were achieved at different temperatures, with pyrolysis at 650 degrees C promoting the formation of micropore structures.
Article
Engineering, Geological
Vicente Navarro, Gema De la Morena, Heidar Gharbieh, Jesus Gonzalez-Arteaga, Juan Alonso, Veli-Matti Pulkkanen, Laura Asensio
Summary: This study proposes an approach to address the inconsistency issue in constitutive formulations of double-porosity models when the macrostructural void ratio e(M) is very small. By increasing soil stiffness and reducing the impact of macrostructural processes on strain, the proposed method improves the consistency of the model.
ENGINEERING GEOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Sebastian Boeckmann, Florian Koch, Bettina Meyer, Franziska Pausch, Morten Iversen, Ryan Driscoll, Luis Miguel Laglera, Christel Hassler, Scarlett Trimborn
Summary: This study found that in the Southern Ocean, iron released from fecal pellets of salps is more bioavailable to phytoplankton compared to krill fecal pellets, potentially strengthening future iron utilization in the region. This shift may have negative impacts on the ecosystem and climate change in the Southern Ocean.
Article
Environmental Sciences
Federico M. Flores, Elsa Lopez Loveira, Florencia Yarza, Roberto Candal, Rosa M. Torres Sanchez
WATER AIR AND SOIL POLLUTION
(2017)
Article
Environmental Sciences
Jose L. Marco-Brown, Tomas Undabeytia, Rosa M. Torres Sanchez, Maria dos Santos Afonso
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2017)
Article
Environmental Sciences
Federico M. Flores, Tomas Undabeytia, Esmeralda Morillo, Rosa M. Torres Sanchez
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2017)
Article
Food Science & Technology
Valeria Poloni, Lauranne Salvato, Carina Pereyra, Aguida Oliveira, Carlos Rosa, Lilia Cavaglieri, Kelly Moura Keller
FOOD AND CHEMICAL TOXICOLOGY
(2017)
Article
Environmental Sciences
Valeria B. Arce, Carla R. Mucci, Alejandra M. Fernandez Solarte, Rosa M. Torres Sanchez, Daniel O. Martire
WATER AIR AND SOIL POLLUTION
(2018)
Article
Chemistry, Physical
Francisco J. Osuna, Agustin Cota, Mariela A. Fernandez, Esperanza Pavon, Rosa M. Torres Sanchez, Maria D. Alba
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2019)
Article
Materials Science, Multidisciplinary
Maria del Mar Orta, Federico M. Flores, Cesar Fernandez Morantes, Gustavo Curutchet, Rosa M. Torres Sanchez
MATERIALS CHEMISTRY AND PHYSICS
(2019)
Article
Chemistry, Physical
Maria Emilia Zelaya Soule, Facundo Barraque, Federico Manuel Flores, Rosa M. Torres Sanchez, Mariela A. Fernandez
ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY
(2019)
Article
Chemistry, Physical
M. E. Zelaya Soule, M. A. Fernandez, M. L. Montes, F. Suarez-Garcia, R. M. Torres Sanchez, J. M. D. Tascon
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2020)
Article
Food Science & Technology
Mariana Blanco Massani, Mariela A. Fernandez, Vanesa Molina, Maria Emilia Zelaya Soule, Constanza Melian, Graciela Vignolo, Patricia Castellano, Rosa M. Torres Sanchez
JOURNAL OF FOOD PROCESSING AND PRESERVATION
(2020)
Article
Chemistry, Multidisciplinary
Melisa S. Olivelli, Ioana Fugariu, Rosa M. Torres Sanchez, Gustavo Curutchet, Andre J. Simpson, Myrna J. Simpson
ACS EARTH AND SPACE CHEMISTRY
(2020)
Article
Engineering, Environmental
Maria E. Zelaya Soule, Federico M. Flores, Rosa M. Torres Sanchez, Mariela A. Fernandez
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING
(2020)
Article
Engineering, Environmental
Federico M. Flores, Tomas Undabeytia, Maria Jaworski, Esmeralda Morillo, Rosa M. Torres Sanchez
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2020)
Article
Engineering, Environmental
Griselda L. Sosa, Cesar Fernandez Morantes, Federico M. Flores, Rosa M. Torres Sanchez, Anita Zalts, Silvana A. Ramirez
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2019)
Article
Engineering, Environmental
Martina Gamba, Melisa Olivelli, Juan M. Lazaro-Martinez, Gisella Gaddi, Gustavo Curutchet, Rosa M. Torres Sanchez
CHEMICAL ENGINEERING JOURNAL
(2017)
Article
Chemistry, Physical
Nadine J. Kanik, Artur Kuligiewicz, Jeffrey T. Cullen
Summary: This study examined the effects of different pre-treatments on the structural H-isotope composition of clay minerals. The results showed that different pre-treatments had varied impacts on different clay minerals, and the choice of pre-treatment should be based on the specific properties and mineralogy of the samples.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Lorenzo Lisuzzo, Giuseppe Cavallaro, Stefana Milioto, Giuseppe Lazzara
Summary: This study proposes Pickering emulsions based on wax and halloysite clay nanotubes for coating silk sutures to increase their loading capacity towards eosin. The presence of halloysite/wax microspheres on the surface of silk sutures has also been explored for controlled release of hydrophobic drugs. The influence of the coating on the thermal and mechanical properties of the sutures has been studied using various techniques. In conclusion, the wax/halloysite Pickering emulsions can successfully generate hydrophobic microdomains on the surface of silk sutures, leading to enhanced flexibility and improved loading capacity towards eosin.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Bruna F. Alves, Rita C. P. Nunes, Luiz C. Bertolino, Elizabete F. Lucas
Summary: Operational problems in the oil industry caused by the precipitation of paraffins can be prevented by using polymeric additives. This article evaluates the use of polymeric nanocomposites as pour point reducers in different types of crude oil and finds that they are more efficient than pure poly(ethylene-covinyl acetate) (EVA) in reducing the pour point. The nanocomposites also modify the wax crystals and reduce the viscosity of the oil samples.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
K. A. Daniels, C. C. Graham, A. C. Wiseall, J. F. Harrington, P. Sellin
Summary: Geological storage with clay buffer is widely preferred for removing hazardous radioactive waste. The impact of fluid salinity and void space on the swelling behavior of barrier bentonites was examined through experiments. The findings suggest that clay swelling is suppressed at higher salinities, which affects the void-filling process.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
N. Werling, A. Kuligiewicz, A. Steudel, R. Schuhmann, F. Dehn, K. Emmerich
Summary: Thermal treatment of clay minerals can be used to produce building materials and environmentally friendly binders. This process involves dehydration, dehydroxylation, breakdown of structure, and recrystallization of high temperature phases. Rehydration and rehydroxylation are important factors to consider for geopolymers and SCM.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Xuan Wang, Hao Ding, Zhuoqun Xu, Jianmeng Zhang, Yanbin Yao
Summary: Rutile nano-TiO2 was loaded onto the surface of sericite to prepare sericite-rutile composite particles, which were then modified with HDTMS and sprayed onto the substrates to form sericite-rutile/HDTMS composite coatings with UV shielding and superhydrophobic self-cleaning properties. The coating exhibited good UV shielding rate and remained superhydrophobic after UV irradiation. The hierarchical structure of the sericite-rutile composite and the low surface energy of HDTMS contributed to the superhydrophobicity and UV shielding effect of the coating.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Kailang Sun, Taojun Zhang, Jie Zhou, Yonghong Liu, Minfeng Zeng, Zhen Yang, Ruokun Feng, Xiaorong Ren, Peng Zhang, Baoyi Wang, Xingzhong Cao
Summary: Chitosan-Pd0 nano particles encapsulated in Al, Co-pillared montmorillonite nanocomposites were successfully synthesized using a facile one-pot heat treatment method. The Al, Co pillaring effectively expanded the surface area and generated numerous mesopores in the interlayer space of the MMt. The resultant nanocomposite exhibited similar high comprehensive catalytic performances as the one prepared by the regular divided-multistep method. The encapsulation of CS chains and doping of Co in the Al pillaring also contributed to the improved catalytic performance.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Nathalie Fagel, Isabel Israde-Alcantara, Reza Safaierad, Marttiina Rantala, Sabine Schmidt, Gilles Lepoint, Pierre Pellenard, Nadine Mattielli, Sarah Metcalfe
Summary: Environmental conditions significantly influence clay minerals, and studying clay sediments in tropical lakes can provide valuable insights into past environmental conditions. In this study, multiproxy records from sediment cores of three crater lakes in central Mexico were analyzed. The results showed that disordered kaolinite, formed through hydrolysis and hydrothermal alteration, was the predominant mineral in the sediments. The abundance of kaolinite varied in relation to organic carbon and organic matter-related elements, and showed opposite trends with lithogenic elements. Geochemical data suggested that the increase in kaolinite abundance is linked to the formation of organo-mineral aggregates and lake level changes in closed basins.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
M. J. Martin-Alfonso, A. Mejia, F. J. Martinez-Boza, P. Partal
Summary: The drilling industry is facing new challenges to develop eco-friendlier drilling fluids. Organic modified sepiolite dispersed in oil can be an excellent additive with suitable rheological properties. This study investigated the effect of alkyl ammonium modifiers on the microstructure and rheological properties of sepiolite-vegetable oil dispersions under high-temperature and high-pressure conditions.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Weiquan Zhan, Siyuan Yang, Shenxu Bao, Liuyi Ren, Cheng Liu
Summary: The interaction between talc and the depressor CMC was investigated through molecular dynamics simulation and density functional theory calculation. It was found that CMC showed stronger adsorption on the edge plane of talc due to enhanced interactions with polar groups and water molecules. The study also revealed specific interactions between H atoms in CMC and O atoms in the edge plane, as well as between O atoms in CMC and Si, Mg atoms in the edge plane. Hydration shells on the basal and edge planes of talc were examined to explain the phenomenon.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Pierre Dramou, Yiyang Sun, Xu Ni, Fangqi Wang, Hua He
Summary: In this study, a magnetic nanocomposite was prepared and used for the separation of rutin from real samples through magnetic solid phase extraction (MSPE). The nanocomposite exhibited high specific surface area, chemical and thermal stability, water solubility, and easy separation in aqueous solution. Characterization and experiments confirmed the successful synthesis and efficient enrichment ability of the nanocomposite.
APPLIED CLAY SCIENCE
(2024)
