Article
Construction & Building Technology
Zhiyang Liu, Zejiao Dong, Tao Zhou, Liping Cao
Summary: The study aimed to establish diffusion models to reveal the diffusion characteristics of water vapor in asphalt mortar, and found that diffusion coefficient has a relationship with relative humidity and sample thickness. Results showed a linear increase in mass loss of diffusive water vapor with time during steady diffusion.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Energy & Fuels
Ehab S. Ali, Ramy H. Mohammed, A. E. Zohir, A. M. Farid, Ramadan N. Elshaer, Hamdy H. El-Ghetany, Ahmed A. Askalany
Summary: A precise gravimetric sorption apparatus was developed to measure the adsorption isotherms and kinetics of water vapor onto porous materials with high accuracy and reliability.
Article
Engineering, Civil
R. Urbina, S. Lefavrais, L. Royon, A. Mongruel, W. Gonzalez-Vinas, D. Beysens
Summary: Hydrogels, known for their ability to adsorb water vapor and liquid water, have been found to enhance dew condensation compared to regular surfaces due to their enhanced vapor adsorption capabilities. This makes them a promising candidate for harvesting water vapor from the atmosphere with higher efficiency in agriculture.
JOURNAL OF HYDROLOGY
(2021)
Article
Chemistry, Multidisciplinary
Ang Liu, Shimin Liu, Kai Wang
Summary: This study demonstrates the significant impact of coal-water interactions on the performance of coalbed methane reservoirs and coal utilizations. A mechanism-based isothermal model and analytical models for diffusion coefficients were proposed and validated. The contributions of different diffusion regimes to the total mass flow were discussed.
Article
Energy & Fuels
Gangtao Mao, Bingliang Zhao, Kai Wang
Summary: Water vapor condensation in the annulus of a flexible riser can cause condensation and corrosion, endangering its safe operation. Current studies model the condensation of water vapor based on the film condensation hypothesis, assuming uniform corrosion of the metal material. However, true corrosion incidents are usually initiated by localized corrosion. To further study the condensation law of water vapor in a flexible riser annulus, an annular condensation experimental device was used to evaluate the condensation behavior on the wall surface. The results provide valuable information for predicting dropwise condensation behaviors and developing corrosion protection strategies.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2023)
Article
Chemistry, Physical
C. A. Papakonstantinou, H. Chen, V Bertola, A. Amirfazli
Summary: The study found through experiments that the contact angle between water and different surfaces decreases over time in a condensation environment, due to the evaporation of condensed drops forming a thin film and adsorption of water vapor causing the contact angle to decrease. The change in contact angle over time has a significant impact on the shedding of droplets in drop-wise condensation processes.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Materials Science, Ceramics
J. Castellano, V. Sanz, E. Canas, E. Sanchez
Summary: The research focuses on developing ceramic tiles with humidity regulating capacity, using common ceramic raw materials to create pieces with regulating functionality. The study establishes a kinetic model and confirms the importance of porosity and microstructure in regulating capacity, finding that mesopores play a key role. Compositions containing gibbsite show higher regulating capacity due to their greater amount of mesopores.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Thermodynamics
Seong-Yong Woo, Ho-Saeng Lee, Ho Ji, Young-Deuk Kim
Summary: The research proposed a hybrid isotherm model that demonstrated good compatibility and accurate predictions with the adsorption isotherms of silica gels. Compared to conventional isotherm models, the hybrid model showed higher coefficients of determination, lower average relative error, and maximum relative error.
JOURNAL OF CHEMICAL AND ENGINEERING DATA
(2021)
Article
Geosciences, Multidisciplinary
Jianhua Li, Bobo Li, Zheng Gao
Summary: This paper utilized fractal dimension analysis to describe pore structure and proposed a shale water vapor multi-layer adsorption model considering pore structure control. The study found that temperature had an inhibitory effect on shale adsorption characteristics.
NATURAL RESOURCES RESEARCH
(2021)
Article
Engineering, Chemical
Santiago A. Flores A. Roman, Gabriel D. Barbosa, Gennady Y. Gor
Summary: We derived an analytical expression for the elastic properties of a fluid confined in nanopores based on an equation of state (EOS) that considers the effects of confinement. The predictions of the EOS for the bulk modulus of liquid argon in nanopores were consistent with Monte Carlo simulations, showing linear dependence on Laplace pressure and the inverse pore size. Furthermore, the EOS was capable of predicting the modulus of the fluid in micropores, where Monte Carlo simulations failed. Our research is a step towards developing an equation of state for confined fluids that can be used for predictions of elasticity.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Geosciences, Multidisciplinary
Hao Wu, Yanbin Yao, Xuejia Du
Summary: There is water in coal pores in the form of adsorption, which can negatively affect coalbed methane production and carbon dioxide storage in coal. Particle size influences water adsorption in coal, with smaller particles having higher rates and amounts of water adsorption. However, the impact of particle size on water adsorption is weaker for high-rank coal compared to low-rank coal. The measurement of water adsorption properties by particles may not be applicable to real coal blocks. Nonetheless, the change in particle size does affect the flow rate of different samples. This study deepens the understanding of water adsorption mechanism in coal with typical particle sizes.
NATURAL RESOURCES RESEARCH
(2023)
Article
Engineering, Environmental
Rana Malhas, Taiyeba Alamgir, Abrar Benhusain, Nadeen Alotaibi, Noor Alhaddad
Summary: In this study, the effects of various process parameters on the removal of oil from oily wastewater using Fe3O4 magnetic nanoparticles were investigated. The results showed that Fe3O4 nanoparticles are highly effective and reusable for oil removal.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Nanoscience & Nanotechnology
Shengnan Sun, Qiongfen Yu, Ming Li, Hong Zhao, Yunfeng Wang, Ying Zhang
Summary: In order to enhance the water vapor adsorption capacity of porous carbon nanomaterials for adsorption thermal energy storage, this study investigated the modification of coffee-shell carbon nanomaterials (CCNMs) using anionic surfactant sodium dodecylbenzenesulfonate (SDBS). The physicochemical properties of the modified CCNMs were characterized, and the adsorption behavior of water vapor was analyzed. The results showed that the modified CCNM (SDBS-CCNM) achieved the highest adsorption capacity of 833.2 mg/g with specific conditions, and the modification increased the amount of oxygen-containing functional groups. The modified CCNM demonstrated potential as a highly adsorbent carbon nanomaterial for thermal energy storage.
ACS APPLIED NANO MATERIALS
(2023)
Article
Physics, Fluids & Plasmas
Jean-Christian Angles D'auriac, Pierre-Etienne Wolf
Summary: Motivated by recent experiments, this study investigates the scattering properties of percolation clusters generated by numerical simulations. It is found that individual clusters exhibit a fractal structure up to a certain scale, even far from the percolation threshold. The influence of intercluster correlations on the structure factor is studied in detail. The results provide insights into light or neutron scattering experiments on percolating systems.
Article
Nanoscience & Nanotechnology
Shinya Kano, Harutaka Mekaru
Summary: This study observes a liquid-dependent impedance generated by vapor condensation and percolation in the void space between nanoparticles. The findings indicate that the condensation and percolation dynamics of vapor can be explained by classical percolation theory.
Article
Engineering, Chemical
Yunfei Yu, Xue Yang, Chenchen Zhang, Jie Chen, Wei Lin, Jianqiang Meng
Summary: This study reports an environmentally friendly and simple approach for preparing double-network (DN) ion gel membranes with high strength and excellent gas separation performance. By optimizing crosslinking density, mass ratio, and the type and content of free ionic liquid, the mechanical and gas separation properties of the DN membrane are improved.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Si-qi Jiang, Qiang Gao, Xi-guang Li, Chao-zhu Deng, Jun Qiu, Xiang-nan Zhu
Summary: A dual-strengthening pretreatment method is proposed to remove PVDF more efficiently and enhance the leaching of LiCoO2. Experimental results show that dual-strengthening pretreatment can effectively remove PVDF and significantly improve the leaching efficiency compared to single pretreatment methods.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Zengchi Hu, Xiaoyu Wang, Xiaohui Zhang, Xue Li, Jiangbin Xia
Summary: The rapid fabrication of high-performance composite membranes based on CMPs using simple and low-cost methods is challenging. In this study, three CMPs-based composite membranes were rapidly fabricated with adjustable size using unidirectional diffusion synthesis. The microstructural design enhanced the rejection rates of the membranes and they showed strong hydrolytic resistance, thermal stability, and acid-base resistance. Electrostatic adsorption and the adjustable microstructures significantly varied the repellence of the membranes to different charged molecules.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Farzaneh Rouhani, Matineh Ayedi, Nasser Safari
Summary: Introducing defects into porous metal-organic frameworks is important for improving their adsorption performance. Quasi-MOFs, an underutilized variant of large-scale, fundamentally deficient MOFs, have been found to have substantial amounts of unsaturated metal sites to offset the drawbacks of MOFs. In this study, a quasi-MOF was produced using a water-stable MOF and demonstrated significantly improved phosphate adsorption capability due to the presence of defect sites.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Valentin Reungoat, Morad Chadni, Louis M. M. Mouterde, Fanny Brunissen, Florent Allais, Helene Ducatel, Irina Ioannou
Summary: This study focuses on the recovery of sinapic acid using liquid-liquid extraction assisted by a hollow fiber membrane contactor from an aqueous feed obtained through the hydrolysis of mustard bran. The screening of solvents of different chemical nature showed that all tested solvents had an extraction efficiency of more than 80% for pH < 5. Four solvents were selected for use in the hollow fiber membrane contactor, and the volatile solvents showed higher mass transfer coefficients compared to non-volatile solvents. The extraction efficiency was intensified by increasing the initial concentration of sinapic acid and the feed-to-solvent ratio. CPME was found to have optimal recovery efficiency at a phase ratio of 8:1, yielding 0.9 g of sinapic acid per liter of CPME used.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Takahiro Sakamoto, Takafumi Hanada, Hayate Sato, Mayu Kamisono, Masahiro Goto
Summary: The emergence of the battery society has led to a high demand for battery metals, resulting in a strain on their supply. This study introduces a novel technique using a hydrophobic deep eutectic solvent (DES) for leaching and recovering battery metals from low-grade nickel laterite ores. The DES enables selective leaching and recovery of the metals, offering a promising pathway for the extraction of critical battery metals.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Rongrong He, Jiarui Chen, Chunyao Zhang, Dan Lu, Lin Zhang, Tao He
Summary: Researcher has developed a method to quantify the charge density in nanofiltration (NF) membrane separation layer and applied it in NF membranes that can separate Mg2+ and Li+. The results showed that overcompensated amine groups played a major role, and there was a linear relationship between charge density and coating bi-layers or PAH layers.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Zhijian Zhang, Min Chen, Zhe Lin, Zhichao Yang, Yafeng Du, Zhihui Chen, Zhenhao Yang, Kongyin Zhao, Ligang Lin
Summary: Membrane technology plays an important role in molecular/ion separation processes, but faces challenges such as membrane fouling. This study introduces a new ion-crosslinking method to fabricate copper alginate hydrogel membranes with improved mechanical strength and antimicrobial capabilities. The membranes exhibit excellent separation performance and enhanced long-term molecule/ion separation through improved anti-swelling properties. Molecular dynamics simulations and life cycle analysis highlight the pore structure and environmental friendliness of the hydrogel membranes. These findings provide valuable insights for developing sustainable hydrogel membranes with stable performance and high separation efficiency.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Dongmei Liu, Aiying Guo, Yanling Qi, Zhixin Ji, Hongjuan Li, Zhiwei Zhang, Xinyue Zhang, Kunze Wu, Aijun Cai
Summary: In this study, a stable magnetic Mg/Mn-layered double oxide-doped biochar composite (MgMnLDO-MBC) was prepared and successfully used for the removal of antibiotics and bacteria from wastewater. The composite exhibited enhanced surface areas, adsorption sites, and free radicals, leading to improved catalytic activity. The effects of different factors on the removal efficiency were evaluated, and the composite showed good reusability.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Feng Wang, Zhaoyong Bian, Yaru Zhang, Wenchao Yu, Qiang Zhang, Hui Wang
Summary: In this study, a nanofibrous layered structure of Ff-Ti3C2Tx-Co3O4 was prepared by self-assembling nanofibrous Co3O4 with lamellar fluorine-free MXene (Ff-Ti3C2Tx). The Ff-Ti3C2Tx-Co3O4 exhibited excellent catalytic activity for degradation, resistant to ionic interference, and maintained high removal efficiency of sulfamethoxazole (SMX) in municipal wastewater. The rapid SMX degradation involved fast electron transfer in redox cycles with PMS and the generation of 1O2 via PMS ->center dot O2 -> 1O2. This work provides new insights into antibiotic degradation mechanisms and electron transfer based on PMS activation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Weipeng He, Jiacheng Luo, Yujie Wu, Tianhao Luo, Chen Tang
Summary: This study comparatively evaluated the role of cationic, anionic, and nonionic polyacrylamides (PAMs) in ballasted flocculation of clay suspensions under different aluminum sulfate (AS) coagulant dosages. The selection of PAMs and AS dosage had a significant influence on the size and shear resistance of ballasted floc aggregates.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Lixian Wang, Lizhi Zhao, Didi Si, Zhixin Li, Huiqin An, Hui Ye, Qingping Xin, Hong Li, Yuzhong Zhang
Summary: Metalloporphyrin-based nanozymes integrated with poly (vinylidene fluoride) membrane show high catalytic activity and reusability for the decolorization of Congo Red dye in continuous flow process.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Yongfei Ma, Chenyu Zeng, Yongzhen Ding, Jiayi Tang, Ondrej Masek, Zhikang Deng, Rui Mu, Zulin Zhang
Summary: In this study, sludge-derived biochar (SBC) was functionalized with various iron salts to enhance its adsorption ability for sulfamethoxazole (SMX) and magnetic collection performance. Ball milling was further employed to treat the optimal iron salt functionalized SBC (MSBC), resulting in ball milled SBC (BMSBC) with improved adsorption performance for SMX. The dominant driving mechanism for SMX adsorption onto BMSBC was confirmed to be multiple physicochemical forces, including 7C-7C conjugation, pore filling, H-bonding, Fe-O complexation, and electrostatic interactions. BMSBC exhibited favorable adsorption ability for SMX in actual waters and could be easily collected within 1 min due to its magnetic sensitivity.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Jinglin Tan, Xiaohui Mao, Wenjihao Hu, Hongbo Zeng
Summary: This study investigates the influence of PDMS chain architectures on surface properties and reveals that PDMS coatings with looped structures exhibit superior hydrophobicity, self-cleaning, and water sliding compared to coatings with linear structures. Additionally, both looped and linear PDMS coated stainless steel mesh/polyester fibers show efficient separation of oil/water mixture.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Wei-Liang Chen, Chih-Chia Cheng, Chien-Hsing Lu, Jem-Kun Chen
Summary: This study designs a novel sandwich-structured capacitor that reduces the absorption time of pollutants using dielectrophoresis force. By coating graphene oxide on polystyrene microspheres as adsorbents and encapsulating them within the capacitor, the adsorption rate is significantly enhanced. Additionally, frequency manipulation allows for the recycling of adsorbents and concentration of dyes, minimizing secondary pollution.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)