Article
Engineering, Environmental
Wei Zhao, Lurui Wan, Zhiyong Xu, Xuefei Li, Yang Lan, Wenbo Zhao, Jing Chen
Summary: In this study, a novel SO2 absorbent with low viscosity, high absorption capacity, and excellent cyclic absorption performance was designed and synthesized. By introducing dimethyl silicone oil, a mixed absorption system with liquid-liquid phase change behavior was obtained, which showed better thermal stability and lower thermal desorption energy consumption. The results of this study have significant implications for the industrial application of SO2 capture.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Zeyu Geng, Qin Xie, Zhongjiao Fan, Weining Sun, Wei Zhao, Junhao Zhang, Jianqiu Chen, Yun Xu
Summary: Four tertiary amine-based protic ionic liquids have been designed and tested for SO2 uptake, showing a high capacity for SO2 and a high selectivity for SO2/CO2 separation. The kinetic study demonstrated their efficient and quick absorption of SO2 under ambient pressure. Due to their excellent recyclability and fast absorption process, these PILs are considered as a potential alternative to traditional absorbents in flue gas desulfurization (FGD).
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Zhe Xu, Peng Zhang, Chuanghui Yu, Weining Miao, Qiankun Chang, Ming Qiu, Yulong Li, Ye Tian, Lei Jiang
Summary: Enhanced boiling heat transfer through surface engineering is highly demanded in industrial fields. A micro-/nanostructured Cu surface with a periodic microgroove/pyramid array containing nanowrinkles is designed, which enables ultrafast liquid re-wetting and ultralow under-liquid bubble adhesion force. This surface promotes the nucleation process and significantly enhances the critical heat flux and heat-transfer coefficient, making it suitable for high-performance phase-change cooling.
ADVANCED MATERIALS
(2023)
Article
Thermodynamics
Yuhui Zhang, Mengsen Zhang, Jianqin Zhu, Zhi Tao, Lu Qiu
Summary: Impinging high frequency microscale droplet stream on a high temperature substrate is an effective method for point heat sink. The boiling patterns and heat transfer characteristics are influenced by the flowrate and frequency of the droplet stream. Increasing the flowrate or frequency can elevate the Leidenfrost temperature.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Computer Science, Interdisciplinary Applications
Guillaume Sahut, Giovanni Ghigliotti, Guillaume Balarac, Manuel Bernard, Vincent Moureau, Philippe Marty
Summary: The numerical method presented in this study simulates multiphase flows with phase change on unstructured grids, extending previous work by Tanguy et al. to improve accuracy using a new framework for differential operators. The mass transfer rate at the interface is computed based on liquid and vapor heat fluxes and latent heat, and is used to solve Navier-Stokes equations and Level Set function advection equation to model interface movement due to phase change. The method is validated through simulations of a growing bubble with fixed and computed mass transfer rates, showing convergence with grid refinement.
JOURNAL OF COMPUTATIONAL PHYSICS
(2021)
Article
Thermodynamics
Ayush Kumar Dixit, Rupak Kumar, Arup Kumar Das
Summary: In this study, the film boiling of liquid nitrogen on liquid water is numerically investigated. The characteristics of film boiling and the effects of disturbances on it are studied. The temperature, velocity field, and evaporation rate of liquid nitrogen are obtained. The numerical results are validated with experimental studies and compared with previous research.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Thermodynamics
Shoukat Alim Khan, Sami G. Al-Ghamdi
Summary: This study investigates the exceptional thermal management abilities of Graphene Oxide (GO) nanofluid and microporous surfaces for nucleate pool boiling systems, with GO nanofluid showing enhanced critical heat flux and heat transfer coefficient on plain surfaces but thick layer formations on microporous surfaces. The analysis found that the highest critical heat flux was observed for GO on the plain surface, while the microporous surface with deionized water had the highest average heat transfer coefficient.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Physics, Multidisciplinary
Wencheng Lu, Siyu Liu, Guangtao Liu, Kun Hao, Mi Zhou, Pengyue Gao, Hongbo Wang, Jian Lv, Huiyang Gou, Guochun Yang, Yanchao Wang, Yanming Ma
Summary: Under high-pressure and high-temperature conditions, sulfur dioxide (SO2) undergoes an unexpected disproportionation into elemental sulfur and sulfur trioxide (SO3). The crystal structure of the resultant SO3 phase has been determined through experimental and theoretical study, leading to an extension of the phase diagram of SO2. This discovery has important implications for understanding S chemistry in deep Earth and other giant planets.
PHYSICAL REVIEW LETTERS
(2022)
Review
Green & Sustainable Science & Technology
Siyu Qin, Ruiyang Ji, Chengyu Miao, Liwen Jin, Chun Yang, Xiangzhao Meng
Summary: This review examines multiple processes involved in phase-change heat transfer and elaborates on the impact of surface modifications on heat transfer performance. Recommendations for surface modification designs are proposed to promote the development of energy-efficient technologies.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Article
Thermodynamics
Brendon Doran, Bin Zhang, Shayan Davani, Kojo Asiamah Osafo, Owen Sutka, Abigail Walker, Nicholas Mueller, Stephen Akwaboa, Patrick Mensah, W. J. Meng, Arden L. Moore
Summary: The research focuses on microscale surface modification to improve pool boiling performance, finding that micro-fin arrays can significantly increase wetted surface area but their microscale structure can affect vapor bubble behavior and heat transfer characteristics, with different heights of micro-fins having important impacts on pool boiling performance.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Chemistry, Multidisciplinary
Dongliang Wang, Jiangpeng Xie, Guixian Li, Wenliang Meng, Jingwei Li, Delei Li, Huairong Zhou
Summary: In this study, high-efficiency and low-energy consumption absorbents are screened for capturing SO2 based on mechanism, model, calculation, verification, and analysis methods. The acidity coefficient (pK(a)) values of five different diamines are calculated, and mathematical models for the cyclic absorption capacity and the desorption reaction heat are built. The results show that the cyclic absorption capacity and desorption reaction heat are influenced by the acidity coefficient. It is important to consider both factors when selecting absorbents. Additionally, the compound quaternary system absorbent shows a wider range of absorption capacity compared to the single ternary absorbent, suggesting it is a direction for absorbent development.
Article
Thermodynamics
Shakeel Ahmad, Wei Deng, Huaqiang Liu, Shahid Ali Khan, Jingtan Chen, Jiyun Zhao
Summary: Micro/nano porous mesh structures on surfaces show great potential in enhancing boiling heat transfer performance. Nonequilibrium molecular dynamics simulations reveal that surfaces covered with mesh structures significantly affect the density distribution, argon temperature, and evaporation rate of the system, leading to improved heat transfer efficiency compared to plain surfaces.
APPLIED THERMAL ENGINEERING
(2021)
Article
Thermodynamics
Qingyang Wang, Xiaojing Ma, Jinliang Xu, Mingjia Li, Yan Wang
Summary: Supercritical pseudo-boiling (SPPB) is characterized by the appearance of bubble-like and vapor-film-like features in supercritical fluid when heated, similar to sub critical boiling (SBB). A three-regime-model is proposed for SPPB, including liquid-like (LL), two-phase-like (TPL) and vapor-like (VL) regimes. Research shows that supercritical heat transfer (SHT) deviates significantly from single-phase convection under certain conditions within the pseudo-boiling temperature range.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Chemistry, Multidisciplinary
Mojtaba Edalatpour, Camryn L. Colon, Jonathan B. Boreyko
Summary: By using ice pellets instead of water droplets, nucleate boiling can be maintained up to 500 ℃, as the tandem phase-change processes at the solid-liquid and liquid-vapor interfaces dampen the rate of vapor generation.
Article
Chemistry, Physical
Ben Chu, Cheng Fang, Feiyu Zheng, Weizheng Cheng, Ruitong Wang, Wanli Zhang, Jinran Tao, Lei Huai, Peng Tao, Chengyi Song, Wen Shang, Benwei Fu, Tao Deng
Summary: Graphene-based films can enhance heat transfer capacity by modifying surface structure and chemistry, but current preparation methods are complex and require additional equipment. The SBISA method developed in this study offers a simple way to generate graphene-based films, leading to significant improvements in boiling performance.
MATERIALS TODAY ENERGY
(2021)
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)