Article
Engineering, Chemical
Zhiyuan Zeng, Xiang Su, Yun Gao, Gaoshan Yu, Shuainan Ni, Jia Su, Xiaoqi Sun
Summary: By functionalizing the cation of ionic liquid, a novel bifunctional ionic liquid [N888DOPE][C272] was developed to separate Lutetium from mixed solution. The IL exhibited superior extraction ability, maximum load capacity and selectivity for Lu(III) compared to unphosphonate-functionalized ionic liquid. The extraction mechanism of [N888DOPE][C272] was identified as an ion association through infrared spectra analysis.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Chemical
Yiota-Victoria Phakoukaki, Paul O'Shaughnessy, Panagiota Angeli
Summary: The experimental study on the continuous extraction of an amino acid from an aqueous solution into an ionic liquid phase demonstrated a double intensification of the solvent used and the overall process. Efficient extraction of the amino acid into the ionic liquid with high mass transfer coefficients was achieved in small channels, indicating promising potential for industrial applications.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Fang Zhang, Qiang Wu, Jia-Xuan Yan, Lei-Tao Sha, Yang Li, Xu-Xin Li, Qing-Gang Huang, Ze-Yi Yan
Summary: Three bifunctional [DODMA](+)[DGA](-) ionic liquids were synthesized and used for U(VI) extraction from real leach solution. The extracted solid captured more than 99% uranium (VI) and the extraction mechanism was proposed to be anionic exchange. The bifunctional ionic liquids showed high selectivity for U(VI) and good separation factors for key interfering ions. The proposed one-step strategy was considered as a sustainable or promising process for easier recovery of U(VI) in sulfate leaching liquor.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Metallurgy & Metallurgical Engineering
Bibhuti Bhusan Mishra, Niharbala Devi
Summary: The extraction of Eu3+ from a chloride medium using bifunctional ionic liquid extractants was studied. The ammonium-based ionic liquid showed better extraction efficiency than the phosphonium-based ionic liquid. Quantitative extraction of Eu3+ was achieved with the ammonium-based extractant. Stripping experiments showed complete back extraction of Eu3+ using nitric acid. The separation factor of Eu3+ over La3+ was also determined.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2022)
Article
Chemistry, Physical
Yifeng Chen, Zhuhong Yang, Xiaohua Lu, Xiaoyan Ji
Summary: Understanding the mass-transfer kinetics of CO2 in novel hybrid absorbents is crucial for process design and evaluation. The study determined the liquid-side mass-transfer coefficients and second-order reaction rate constants of CO2 in a specific hybrid absorbent, finding promising properties for CO2 separation.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
Arina V. Kozhevnikova, Inna V. Zinov'eva, Nikita A. Milevskii, Yulia A. Zakhodyaeva, Andrey A. Voshkin
Summary: A new hydrophobic bifunctional ionic liquid based on tri-n-octylamine and octanoic acid was synthesized and characterized. The extraction of rare earth elements from aqueous solutions using this ionic liquid was studied. The results showed that the ionic liquid can efficiently extract the rare earth elements and has excellent reusability.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Multidisciplinary Sciences
Le Yao, Chengjiang Lin, Xiaozheng Duan, Xiaoqing Ming, Zhixuan Chen, He Zhu, Shiping Zhu, Qi Zhang
Summary: This article reports a new type of underwater adhesive based on a polymeric matrix and hydrophobic ionic liquid, which has autonomous underwater adhesion capability. Research shows that the adhesion energy of this adhesive on PET substrate will increase more than 5 times after 24 hours.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Analytical
Huan Yang, Hairong Dai, Xuerui Wan, Dandan Shan, Qiuping Zhang, Jian Li, Qian Xu, Chunmin Wang
Summary: Due to the prevalence and harmfulness of mycotoxin co-contamination in cereals, simultaneously monitoring multiple mycotoxins is of great importance for food safety and public health. In this research, a nanofiber mat modified by polydopamine and ionic liquid was prepared and used as a solid-phase extraction adsorbent for the simultaneous quantitative detection of multiple mycotoxins in corn and wheat. The modified nanofiber mat showed excellent adsorption performance and could effectively reduce the matrix effect, making it a promising method for mycotoxin analysis.
ANALYTICA CHIMICA ACTA
(2023)
Article
Engineering, Chemical
Ruizhuan Wang, Guzhong Chen, Hao Qin, Hongye Cheng, Lifang Chen, Zhiwen Qi
Summary: Screening bifunctional ionic liquids can enhance the efficiency of long-chain ester formation, with evaluation of extraction and catalytic performance based on infinite dilution selectivity and pKa values. Experimental results show that the screened IL outperforms commonly used bifunctional IL in terms of long-chain ester yield and purity.
CHEMICAL ENGINEERING SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Duoling Cao, Zuhong Li, Wenbo Li, Ke Pei, Xu Zhang, Li Wan, Li Zhao, Alexey Cherevan, Dominik Eder, Shimin Wang
Summary: Carbon counter electrode-based perovskite solar cells (C-PSCs) are considered promising due to their stability and low cost. This study used two novel pheniramine halides to modify the interface between the electron transport layer and perovskite layer, resulting in improved device performance. The modified C-PSCs achieved higher power conversion efficiency compared to the control device, and the unencapsulated modified device maintained a high level of its initial efficiency under ambient conditions for 800 hours. This study suggests the potential application of multifunctional complex molecules in high-efficiency and stable C-PSCs.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Physical
Chao Sun, Yanli Zhang, Yasen Dai, Jiafu Xing, Yajuan Qu, Yinglong Wang, Jun Gao
Summary: Ionic liquids are used as extractants to efficiently and environmentally separate the azeotrope of ethyl acetate and ethanol. Through mechanism analysis, four ILs are selected as extractants and their separation performance is verified through experiments.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Mechanics
Surya Narayan Maharana, Manoranjan Mishra
Summary: This paper investigates whether a chemical reaction between reactants A and B can induce instability of K-H type, and finds that the formation of product C leads to the formation of K-H billows at the A-C interface. By varying parameters, the changes in dynamical properties of the billows are analyzed, showing different results for different values of R-c.
JOURNAL OF FLUID MECHANICS
(2021)
Article
Chemistry, Inorganic & Nuclear
Li Zhao, Shuliang Chen, Xianzhi Hu, Futing Zi
Summary: Gold adsorption from thiosulfate solution using azole-functionalized microspheres (PS-3-AT) was studied. PS-3-AT effectively adsorbed Au(i)-thiosulfate complex with an adsorption capacity of 39.8 kg/t. Adsorption kinetics and isotherm studies showed that the adsorption process was exothermic and could be described by the pseudo-second-order and Freundlich models. Characterization techniques demonstrated the formation of -NH+Cl- group during the grafting process, and interaction between PS-3-AT and Au(S2O3)(2)(3-) at an atomic level was visualized. PS-3-AT could be regenerated and maintained satisfactory performance after five cycles. The facile synthetic method and adsorption properties of PS-3-AT have significant implications for thiosulfate gold leaching technologies.
DALTON TRANSACTIONS
(2023)
Article
Materials Science, Multidisciplinary
Xiao-Tian Hu, Jian-Gang Qian, Ying Yin, Xin Li, Tie-Jun Li, Jing Li
Summary: This paper presents an available process to obtain metallic state molybdenum deposit from ionic liquid. It is found that elementary Mo layer can be electrodeposited under constant current in ionic liquid BMIMBF4. The properties of the Mo layer are significantly affected by additive ethylene glycol (EG), deposition temperature, and current density. By considering different technical factors, optimized process parameters are obtained as volume ratio of 2:1 in BMIMBF4 + EG system, deposition temperature of 150°C, and current density of 0.75 mA·cm(-2).
Article
Chemistry, Physical
Hirad S. Salehi, Othonas A. Moultos, Thijs J. H. Vlugt
Summary: This study utilized molecular dynamics simulations to compute the interfacial properties of hydrophobic deep eutectic solvents (DESs) with water. The results showed that DESs exhibited high hydrophobicity with negligible water solubilities. Different charge scaling factors led to variations in the interfacial tensions between DESs and water, with distinct density profiles of decanoic acid observed at the interfaces.
JOURNAL OF PHYSICAL CHEMISTRY B
(2021)
Article
Energy & Fuels
Burak Ulusoy, Bozidar Anicic, Liyan Zhao, Weigang Lin, Bona Lu, Wei Wang, Kim Dam-Johansen, Hao Wu
Summary: Different additives were employed to reduce NOX emissions and bed agglomeration in fluidized bed combustion of biomass. Some additives prevented bed agglomeration and reduced the conversion of fuel-N to NO, but led to higher N2O emissions. Air staging and introduction methods of additives had varying effects on NOX emissions and bed agglomeration.
Article
Energy & Fuels
Burak Ulusoy, Bozidar Anicic, Weigang Lin, Bona Lu, Wei Wang, Kim Dam-Johansen, Hao Wu
Summary: This study investigated the interactions in NOX chemistry during biomass co-combustion, finding that the effect varies with different biomass fuels and ash characteristics. The catalytic effect of ash on NO formation is influenced by ash preparation temperature and mixing with fuel. The impact of NH3 on NO depends on the stage of the co-combustion process, and NO emissions are reduced and the influence of ash on nitrogen chemistry is less pronounced under air staged conditions.
Article
Engineering, Chemical
Yujie Tian, Jingwei Geng, Wei Wang
Summary: This research introduces a two-step scheme to reflect on the choice of markers in the classic experimental approach, and deduces the definitional relations of the drag correction factor from force balance equations. A comparison between common drag models and definitional relations shows that correlating the heterogeneity index or drift velocity with certain parameters cannot address the challenge of developing a general mesoscale drag model.
Article
Engineering, Chemical
Haifeng Wang, Yanpei Chen, Wei Wang
Summary: Studying clusters in fluidized beds reveals their dynamic characteristics in both temporal evolution and time-averaged behaviors, including power-law distribution of cluster sizes, simplified coalescence process, and breakup linked to increasing torque.
Article
Engineering, Chemical
Sheng Chen, Yiping Fan, Haoyuan Kang, Bona Lu, Yujie Tian, Guoshan Xie, Wei Wang, Chunxi Lu
Summary: This study investigates the effects of downward feed injection on reaction behaviors through three-phase reactive simulation, finding that an appropriate injection angle and mounting position can improve the yield of gasoline and LPG while mitigating adhesion of the coking layer to the wall.
CHEMICAL ENGINEERING SCIENCE
(2021)
Article
Engineering, Chemical
Caixia Han, Youhao Xu, Bona Lu, Hao Wu, Wei Wang
Summary: This study investigates the flow regime transition and regulation mechanism in diameter-transformed reactors using multiscale CFD simulations and twelve-lump kinetics. The results show that a high-concentration choking plateau appears in the new reactor when considering reactions, while it becomes a slowly ascending slope under cold-model conditions. Changing the particle circulating mode can stabilize the flow behaviors and product yield.
Article
Engineering, Chemical
Jingwei Geng, Yujie Tian, Wei Wang
Summary: In this work, a two-level averaging approach is proposed for mesoscale drag modeling in gas-solid fluidization. The method defines the mean drag at the fine-grid scale and the unified EMMS drag at the coarse-grid scale by performing a series expansion with respect to the phase mean points. The effectiveness of the method is validated through comparisons with simulations at different scales.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Engineering, Chemical
Xing Zhao, Yong Jiang, Fei Li, Atta Ullah, Wei Wang
Summary: Coarse-graining is a widely used method in gas-solid fluidization simulations, but the consensus on its key parameter, the coarse graining ratio, and its corresponding scaling law is still lacking. This study proposes a scaling law based on similarity analysis and applies it to the multi-phase particle-in-cell (MP-PIC) method. The approach is validated through simulations of two bubbling fluidized beds, which show improved accuracy of solids volume fraction and velocity distributions over a wide range of coarse-graining ratios.
Article
Engineering, Chemical
Chengzhe Du, Caixia Han, Zhuo Yang, Hao Wu, Hao Luo, Lukasz Niedzwiecki, Bona Lu, Wei Wang
Summary: This study proposes a complete EMMS-ANN drag scheme for hot, reactive simulation of DTFB. The scheme considers the variation of gas properties and operating parameters and uses an artificial neural network to explore the multivariate relation in drag modeling.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Engineering, Environmental
Chunhua Zhang, Bona Lu, Wei Wang, Mengxi Liu, Chunxi Lu, Mao Ye
Summary: In this study, a population balance model (PBM) combined with multiscale computational fluid dynamics (CFD) was used to simulate the evolution of coke distribution in a methanol-to-olefins fluidized bed reactor. The predicted wide and uneven distribution of coke content showed good agreement with experimental data. The mass fractions of the desired products, ethylene and propylene, and their selectivity ratio were also well predicted. The reasonable prediction suggests that coupling PBM with multiscale CFD is helpful to understand and optimize MTO reactors.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Chemical
Renshuai Zhu, Yanpei Chen, Wei Wang
Summary: Through a particle-level experiment, it was found that various banded structures exist in a bubbling fluidized bed, indicating a violation of local equilibrium. These structures involve stretching, compression, or shearing between particles. Non-Gaussian velocity distributions were found throughout the bed. The nonequilibrium characteristic will serve as a criterion for assessing different models of bubbling fluidized beds in future research.
Article
Mechanics
Qingzhan Li, Renshuai Zhu, Wei Wang, Yanpei Chen, Fei Li, Tomohiko Furuhata
Summary: In this study, a new time-resolved, three-dimensional particle tracking velocimetry method is developed to investigate the dynamics of particle-laden jet flow. Experimental results show that the presence of particles significantly affects the gas turbulence and alters the gas flow field downstream. A new drag model based on reconstructed particle trajectories and gas flow field is proposed, which shows better agreement with experimental data than the standard single-particle drag model. Additionally, a simple model relating particle volume fraction to particle displacement is developed, demonstrating good agreement with experimental measurements.
Article
Thermodynamics
Hao Luo, Xinyan Liu, Lukasz Niedzwiecki, Xiaoqin Wu, Weigang Lin, Bona Lu, Wei Wang, Hao Wu
Summary: This study analysed the effects of model dimensionality, particle shrinkage, and boundary layer reactions on particle-scale modelling of biomass char conversion under pulverized fuel combustion conditions using six models. The 1D_SPM_BH model with consideration of intra-particle heat and mass transfer, particle shrinkage, and boundary layer reactions was found to be the most appropriate model for biomass char conversion. The 0D_Cons model provided a good approximation for small particle size at specific temperatures, while the 0D_SPM model overestimated the char conversion rate. Considering intra-particle heat and mass transfer improved the model prediction of char conversion time and reaction contributions, and boundary layer reactions had a significant effect on char conversion prediction for large particles and high temperatures.
PROCEEDINGS OF THE COMBUSTION INSTITUTE
(2023)
Article
Engineering, Environmental
Chuanpeng Zhang, Renshuai Zhu, Yanpei Chen, Wei Wang, Tomohiko Furuhata
Summary: The configuration-dependent dynamics of non-spherical particles were experimentally investigated in a quasi-two-dimensional gas-solid fluidized bed. It was found that the vertical velocity profiles were sensitive to the aspect ratio at low gas velocity but not at high gas velocity. The velocity distribution, particularly the rotational velocity distribution, deviated from the Maxwellian distribution. The joint probability density distribution of vertical and rotational velocity was asymmetric. Two high-probability particle configurations, two particles in a parallel or vertical arrangement, were identified by calculating various functions. The cause of this order appearance was explained through entropy theory. The drag force of the particle configurations at different angles and Re was compared, demonstrating the necessity of considering configuration-dependent drag force for non-spherical particle fluidization.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Zhiwei Wang, Jiaying Huang, Wei Wang, Xinfeng Wang, Yan Wang, Baoyu Gao, Qian Li
Summary: Monocarboxylic acids were used to modulate the number of missing-linker defects in Hf-porphyrin MOFs (Hf-TCPP-X) and enhance their performance in removing norfloxacin from complex aqueous matrices. The missing-linker defects promoted the removal efficiency by facilitating photoinduced charge transfer and increasing the number of active sites. This study provides a promising route to improve the removal performance of contaminants in highly saline water through defect engineering.
CHEMICAL ENGINEERING JOURNAL
(2023)
