Article
Engineering, Chemical
Lilya Boudriche, Rachel Calvet, Alain Chamayou, Boualem Hamdi
Summary: The experimental study on attapulgite powder grinding in wet media revealed significant decrease in particle size, preservation of fibers, and increase in specific surface area under specific grinding conditions.
Article
Chemistry, Multidisciplinary
Ricardo Almeida, Eduardo Ferraz, Julio Santaren, Jose A. F. Gamelas
Summary: The surface properties of sepiolite and palygorskite samples were compared using inverse gas chromatography (IGC), revealing differences in surface energy, specific interactions, and morphology indices. The results were rationalized in terms of the structural features of the minerals studied, highlighting potential applications in adsorption processes and matrix-filler interactions with volatile organic compounds.
Article
Chemistry, Multidisciplinary
Zhifang Zhang, Wenjun Gui, Jia Wei, Yanjun Cui, Ping Li, Zhilong Jia, Peng Kong
Summary: In this study, Attapulgite was modified with sodium humate through a one-step hydrothermal process to enhance its adsorption capacity for methylene blue. The modified Attapulgite showed significantly improved adsorption capacity and removal rate for methylene blue compared to the raw material. The results indicated that electrostatic attraction, hydrogen bonding, and chemical association play important roles in the adsorption process.
Article
Biochemistry & Molecular Biology
Soufiane Bensalem, Boualem Hamdi, Sylvie Del Confetto, Rachel Calvet
Summary: Chitosan/bentonite composites beads were prepared and characterized using various techniques to study their surface composition and morphology, highlighting the influence of chitosan on bentonite surface. Inverse gas chromatography was utilized to analyze the physico-chemical properties, showing significant effects of chitosan on the dispersive component of the bentonite surface energy.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Engineering, Chemical
Ebru Tekneci Akgul, Birol Isik, Bahire Filiz Senkal, Ozlem Cankurtaran
Summary: In this study, a trisurethane modified sulfonamide based polymeric adsorbent was prepared and characterized. The surface properties of the adsorbent were investigated using inverse gas chromatography, and the optimum conditions for effective adsorption of Hg (II) ions were determined. Batch adsorption studies showed that the adsorbent had a high sorption capacity for mercury and could be regenerated for multiple cycles without significant loss of capacity.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Mariusz Sandomierski, Monika Zielinska, Katarzyna Adamska, Adam Patalas, Adam Voelkel
Summary: This study aimed to find more effective bisphosphonate carriers for bone tissue engineering, using montmorillonite and calcium montmorillonite as carriers for risedronate. High drug release was achieved, with a very high degree of drug release (92%) obtained for calcium montmorillonite compared to other reports on risedronate carriers. Various methods were used to confirm the assumptions, including EDS mapping, inverse gas chromatography, and UV-VIS spectroscopy.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Physical
K. Adamska, A. Voelkel
Summary: The surface properties of biomaterials play a crucial role in their applications in the human environment as they affect their interactions with body fluids and tissues. Inverse liquid chromatography is a useful technique for characterizing ceramic biomaterials and assessing changes in their surface properties under different conditions. The activity of biomaterials depends not only on their structure but also on the environment in which they are used.
SURFACES AND INTERFACES
(2022)
Article
Chemistry, Analytical
Guangle Li, Zhenle Cao, Kacie K. H. Y. Ho, Yi Y. Zuo
Summary: The hydrophobicity of nanoparticles is crucial in determining their aggregation state and plays a predominant role in mediating nano-bio interactions. The maximum particle dispersion (MPD) method offers a promising and cost-effective approach for quantitatively characterizing the hydrophobicity of NPs.
ANALYTICAL CHEMISTRY
(2022)
Article
Engineering, Environmental
Hua Xie, Jinfei Wei, Shuyi Duan, Qing Zhu, Yanfei Yang, Kai Chen, Jiaojiao Zhang, Lingxiao Li, Junping Zhang
Summary: Superhydrophobic coatings based on natural attapulgite nanorods were prepared using a non-fluorinated and durable photothermal method, showing excellent superhydrophobicity and photothermal effect. The coatings exhibited efficient anti-icing and deicing properties in both simulated and outdoor environments, making them promising for practical applications due to their excellent performance and eco-friendly approach.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Mahboobeh Ejtemaei, Sepehr Sadighi, Mehdi Rashidzadeh, Sirous Khorram, Jan O. Back, Simon Penner, Michael F. Noisternig, Dariush Salari, Aligholi Niaei
Summary: This study investigates the surface treatment of kaolin and attapulgite/zeolite A extrudates using argon glow discharge plasma. The results show that plasma treatment increases surface area and pore volume, but decreases the weak acidic site density of the extrudates. The plasma-treated sample exhibits improved resistance to coke formation compared to the untreated one.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Materials Science, Paper & Wood
Mayu Suzuki, Anett Kondor, Yuma Sakuraba, Orlando J. Rojas, Mariko Ago
Summary: This study presents a simple spray drying method for producing organic particles with sizes between 0.85 and 1.57 μm, and investigates their role in composite materials. The nanocomposites with 10% lignin content exhibit transparency and lower relative permittivity at 28 GHz.
Article
Chemistry, Physical
Zuzana Vajglova, Irina L. Simakova, Kari Eranen, Paivi Maki-Arvela, Narendra Kumar, Markus Peurla, Stiina Tolvanen, Alexander Efimov, Leena Hupa, Jouko Peltonen, Dmitry Yu Murzin
Summary: The study investigated four clay materials in a catalytic reaction, with attapulgite showing the best results in terms of yield and stereoselectivity. Attapulgite had superior properties compared to other clay materials, exhibiting high meso-to-micropore volume ratio, basicity, and mechanical strength.
APPLIED CATALYSIS A-GENERAL
(2022)
Article
Chemistry, Physical
Zhengzheng Liu, Jinyuan Cao, Bowen Wu, Linping Qian, Anaiang Guan, Chao Yang, Ximeng Lv, Lijuan Zhang, Gengfeng Zheng
Summary: In this study, the surface energy of copper-loaded nitrogen-doped carbon was investigated using inverse gas chromatography. Various parameters were obtained and it was found that the catalyst with the highest basic parameter and optimal acid interaction exhibited high catalytic performance in acetate production.
Article
Engineering, Chemical
Jiajia Chen, Dandan Wang, Xinyu Lu, Haoquan Guo, Pengcheng Xiu, Yu Qin, Chaozhong Xu, Xiaoli Gu
Summary: In this study, a Co/m-ATP catalyst was prepared using attapulgite as a carrier to depolymerize lignin. Under appropriate reaction conditions, the catalyst showed high bio-oil yield and low char yield, indicating its potential application in lignin depolymerization.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Birol Isik, Fatih Cakar, Ozlem Cankurtaran
Summary: In this study, the ability to separate isomer series and the surface properties of cholesteryl chloroformate liquid crystal were investigated using inverse gas chromatography (IGC) technique. The adsorption of selected solvents was found to be exothermic, and the CC surface was determined to have basic character based on the calculated acidity and basicity constants.
SEPARATION SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Environmental
Lilya Boudriche, Zahra Safaei, Deepika Ramasamy, Mika Sillanpaa, Amel Boudjemaa
WATER ENVIRONMENT RESEARCH
(2019)
Article
Chemistry, Multidisciplinary
Benoit Chezeau, Lilya Boudriche, Christophe Vial, Amel Boudjemaa
SEPARATION SCIENCE AND TECHNOLOGY
(2020)
Article
Biochemistry & Molecular Biology
Maya Cherfaoui, Teresa Cecchi, Sonia Keciri, Lilya Boudriche
CHEMISTRY & BIODIVERSITY
(2019)
Article
Engineering, Chemical
Marie Dietemann, Fabien Baillon, Fabienne Espitalier, Rachel Calvet, Mike Greenhill-Hooper
Article
Chemistry, Multidisciplinary
Lori Gonnet, Christiane Andre-Barres, Brigitte Guidetti, Alain Chamayou, Christophe Menendez, Michel Baron, Rachel Calvet, Michel Baltas
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2020)
Article
Biochemistry & Molecular Biology
Soufiane Bensalem, Boualem Hamdi, Sylvie Del Confetto, Rachel Calvet
Summary: Chitosan/bentonite composites beads were prepared and characterized using various techniques to study their surface composition and morphology, highlighting the influence of chitosan on bentonite surface. Inverse gas chromatography was utilized to analyze the physico-chemical properties, showing significant effects of chitosan on the dispersive component of the bentonite surface energy.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Engineering, Chemical
Lilya Boudriche, Rachel Calvet, Alain Chamayou, Boualem Hamdi
Summary: The experimental study on attapulgite powder grinding in wet media revealed significant decrease in particle size, preservation of fibers, and increase in specific surface area under specific grinding conditions.
Article
Chemistry, Multidisciplinary
Lori Gonnet, Alain Chamayou, Christiane Andre-Barres, Jean-Claude Micheau, Brigitte Guidetti, Tohru Sato, Michel Baron, Michel Baltas, Rachel Calvet
Summary: The study on the Diels-Alder reaction between diphenylfulvene and maleimide demonstrates that mechanochemistry offers advantages over solution-based methods, showing shorter reaction time, improved reaction completeness, and enhanced selectivity.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Food Science & Technology
Boualem Chennit, Maria del Carmen Perez-Camino, Raquel B. Gomez-Coca, Wenceslao Moreda, Lilya Boudriche, Khodir Madani
Summary: This study characterized the fatty minor compounds of Kabylian virgin olive oils, including the content of sterols, triterpenic dialcohols, diterpenic alcohols, aliphatic alcohols, triterpenic alcohols, FAAEs, and waxes, in oils from different olive cultivars. The analysis showed distinct differences in the composition of these compounds among the oils, with Azeradj-VOO standing out for its high phytosterol content.
JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION
(2021)
Article
Pharmacology & Pharmacy
M. Dandignac, S. P. Lacerda, A. Chamayou, L. Galet
Summary: This study focused on dry milling of BCS class II molecules, showing that milling can modify solid state properties and improve solubility and dissolution kinetics. The enhancements in solubility and dissolution rate were attributed to changes in surface area, drug crystallinity reduction, and water sorption increase induced by the milling process.
PHARMACEUTICAL DEVELOPMENT AND TECHNOLOGY
(2022)
Article
Chemistry, Physical
Lilya Boudriche, Faiza Bergaya, Amel Boudjemaa
Summary: This study focused on the preparation of silica-palygorskite heterostructures using fibrous clay mineral (palygorskite) and tetraethyl orthosilicate reagent. The textural properties of the heterostructured samples were significantly influenced by the acid activation pre-treatment of the palygorskite and the length of the amine chains used. The resulting material showed a high specific surface area and a well-developed pore network, making it suitable for the removal of volatile organic compounds at low concentrations.
Article
Engineering, Chemical
Ri Zhang, Shasha Zhang, Mengyan Ding
Summary: A thin liquid film method is proposed to evaluate sand erosion in annular flow. This method considers the direct interaction between the liquid film and gas core, as well as the entrainment and deposition of droplets. The erosion rate is calculated by considering the effects of liquid entrainment and particle velocity decay. The method is fully verified by comparing with experimental data.
Article
Engineering, Chemical
Yu Suo, Xianheng Su, Wenyuan He, Xiaofei Fu, Zhejun Pan
Summary: This research investigates the mechanical properties of sandstone-shale composite through orthogonal experimental method and discrete element simulation. The results show that different lithologies and thickness ratios can affect the strength and fracture mode of the composite rock samples.
Article
Engineering, Chemical
Maurizio Troiano, Andrea El Hassanin, Roberto Solimene, Alessia Teresa Silvestri, Fabrizio Scala, Antonino Squillace, Piero Salatino
Summary: This study investigates the potential of Fluidized Bed Finishing (FBF) for square flat AlSi10Mg specimens manufactured via Laser-Powder Bed Fusion (L-PBF) additive manufacturing technology. The results show that good finishing can be achieved using rotation-assisted tests, with a maximum reduction of surface roughness by 67%. Steel particles are found to be the most effective bed material.
Review
Engineering, Chemical
Ningbo Song, Wanzhong Yin, Jin Yao
Summary: Seawater's dissolved salts and minerals have various effects on the flotation process, including influencing the characteristics and behavior of flotation factors, as well as affecting the surface of sulfide minerals. In most cases, seawater has adverse effects on the flotation of sulfide minerals, but these effects can be mitigated by adjusting the reagents.
Article
Engineering, Chemical
Kaiqiao Wu, Shuxian Jiang, Victor Francia, Marc-Olivier Coppens
Summary: In rectangular and cylindrical annular fluidized beds, pulsating gas flow can create regular bubble patterns, overcoming challenges seen in conventional units. This study provides new opportunities for modularization of fluidized bed operations.
Article
Engineering, Chemical
Shuo Li, Huili Zhang, Jan Baeyens, Miao Yang, Zehao Li, Yimin Deng
Summary: The paper assesses the behavior of cohesive Geldart C-type particles when fluidized by air with the aid of vibration. It determines that mechanical vibration is a simple and effective method to improve the fluidity of cohesive particles during fluidization.
Article
Engineering, Chemical
Zhenfei Feng, Qingyuan Zhang, Shanpan Liang, Zhenzhou Li, Fangwen Guo, Jinxin Zhang, Ding Yuan
Summary: A new micro/mini-channel heat sink (MCHS) with a combined structure of longitudinal and transverse vortex generators is designed, using Al2O3 nanofluid as the working medium. The study explores the effects of transverse vortex generator shape and longitudinal vortex generator angle on the hydraulic and thermal characteristics, comprehensive performance, entropy generation, and exergy efficiency. The results show that the triangular transverse vortex generator improves the comprehensive performance and exergy efficiency. Combined with the longitudinal vortex generator, the MCHS achieves the best comprehensive performance, entropy generation, and exergy efficiency when the Reynolds number is 742.
Article
Engineering, Chemical
Kostas Giannis, Christoph Thon, Guoqing Yang, Arno Kwade, Carsten Schilde
Summary: This study presents a 3D convolutional neural network (3D-CNN) methodology for generating realistic 3D models of particles. The method trains on 2D projections of particle images to predict their 3D shapes, and evaluates the accuracy of the predictions using Fourier shape descriptors (FSDs). This methodology has wide applications in particle shape analysis.
Article
Engineering, Chemical
Zheng-qing Zhou, Lu-jia Chai, Yu-long Zhang, Ya-bin Wang, Ze-chen Du, Tian-yi Wang, Yu-zhe Liu
Summary: The dynamic oxidation and shell-breaking processes of aluminum nanoparticles (ANPs) during heating were studied using in situ transmission electron microscopy. The results revealed that the changes in shell thickness can be divided into three stages, and the active aluminum content of ANP decreased before shell-breaking.
Article
Engineering, Chemical
Fulei Chen, Huaqing Ma, Zihan Liu, Lianyong Zhou, Yongzhi Zhao
Summary: A particle breakage model based on the particle replacement scheme, using the polyhedral model to describe particles, is proposed in this work to accurately describe the breakage of a large number of particles. Additionally, a fast-cutting algorithm is proposed to reproduce the size distribution of progeny particles determined by the breakage model. The validation and simulation results show satisfactory accuracy, efficiency, and stability of the algorithm.
Review
Engineering, Chemical
Matteo Errigo, Christopher Windows-Yule, Massimiliano Materazzi, Dominik Werner, Paola Lettieri
Summary: Gas-solid fluidized-bed systems have advantages in terms of chemical reaction efficiency and temperature control, making them widely used in industrial applications. However, the design, scale-up, and optimization of these complex units are limited by the lack of deep physical understanding. Non-invasive and non-intrusive diagnostic techniques provide a way for researchers to study these systems without affecting the flow field or directly contacting the medium under study.
Article
Engineering, Chemical
Saeed Fateh, Mohammad Behshad Shafii, Mohammad Najafi, Cyrus Aghanajafi
Summary: Applying a magnetic field to ferrofluids alters their flow characteristics and enhances heat transfer. Through visualization and quantitative investigation, it is found that the magnetic field influences the flow patterns and velocity profiles, improving fluid mixing and vorticity magnitude.
Article
Engineering, Chemical
Lei Gao, Bingbing Wei, Xiaochuan Hu, Zaifeng Yao, Yiwen Fang, Xuejian Gao
Summary: In this study, a numerical model of sand triaxial test was established using discrete element software PFC3D, and an indoor triaxial test was conducted to calibrate the numerical model. The influence of microscopic parameters on the macroscopic mechanical response of sand was analyzed. The results showed that the friction coefficient had the greatest impact on the peak strength and residual strength of the sand's stress-strain curve, and it was positively correlated. The normal tangential stiffness ratio was negatively correlated, while the porosity and boundary flexibility stiffness had minimal influence on it.
Article
Engineering, Chemical
Xuan Liu, Jie Gong, Kai Jiang, Xiaojuan Lai, Yu Tian, Kang Zhang
Summary: This study aimed to improve the performance of lignite coal water slurries (CWSs) by synthesizing a series of three-arm amphiphilic block copolymers. By controlling the relative molecular weight, hydrophilic/hydrophobic ratio, and ionic group content, the apparent viscosity of CWSs was significantly reduced and the static stability was improved. Thermogravimetric testing and XPS analysis were conducted to reveal the mechanism behind the improved performance.
Article
Engineering, Chemical
Lanka Dinushke Weerasiri, Daniel Fabijanic, Subrat Das
Summary: Fluidization at low pressure offers significant benefits for the fine chemical industry. This study investigates the behavior of bubbles and bed expansion under low pressure conditions. It is found that lower pressure leads to larger bubbles, increased bubble quantity, and higher aspect ratio. The predictability is affected by the inhomogeneous fluidization, but low pressure fluidization can generate similar bubble sizes with lower fluidizing mass compared to atmospheric pressure.