Article
Environmental Sciences
Hong Cheng, Jianqiang Zhou, Pei-Ying Hong
Summary: The study showed that the upflow attachment-growth AnMBR (UA-AnMBR) had a slower membrane fouling rate compared to the continuously stirred AnMBR (CS-AnMBR), which was attributed to changes in microbial activity and profile dynamics.
ENVIRONMENTAL RESEARCH
(2021)
Article
Engineering, Environmental
S. S. Hoseini, G. Najafi, B. Ghobadian, A. H. Akbarzadeh
Summary: This study investigates the importance of mixing in the chemical industry and proposes a computational framework for optimizing power consumption and impeller stress in stirred-tank reactors. By using Computational Fluid Dynamic (CFD) analysis, the study examines three types of impellers and utilizes Multi-objective Genetic Algorithm (MOGA) to optimize the geometrical parameters of the blades. The results show a decrease in power consumption with V- and U-shape impellers compared to the 6-blade Rushton turbine, and indicate differences in turbulent kinetic energy and stress distribution among different impeller designs.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Chemical
Deyin Gu, Hui Xu, Mei Ye, Li Wen
Summary: This study compared the performance differences between conventional impeller and self-similarity impeller in fluid mixing process through experimental and computational analyses. The results showed that the self-similarity impeller had better mixing efficiency and lower power consumption compared to the conventional impeller.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2022)
Article
Energy & Fuels
Bhaskar Patil, Anand V. . Kulkarni
Summary: The present work proposes a new combination of two conventional reactors to develop an improved gas-liquid/gas-liquid-solid reactor. Experimental investigations were performed on the performance of combining plunging jet/s with conventional mechanically agitated contactor (MAC) using standard parameters. The proposed reactor demonstrated superior performance compared to conventional MAC and gas inducing (GIC) reactors.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2023)
Article
Chemistry, Multidisciplinary
Tomas Kracik, Tomas Moucha
Summary: Stirred tank reactors are crucial in various industries, requiring consideration of geometry and suitable driving force for design. Predicting ungassed power input is essential for industrial design and depends on multiple variables. This study focuses on the influence of batch composition, impeller type, and diameter on power consumption.
Article
Engineering, Chemical
Xiaolong Li, Hongliang Zhao, Zimu Zhang, Yan Liu, Ting'an Zhang
Summary: The multiphase flow in the solid-liquid tank stirred with a new structure of Intermig impeller was analyzed, showing improved mixing performance and power efficiency compared to the standard impeller design. The inner blades have little influence on power consumption, with the optimal angle at 45 degrees, while the outer blades greatly affect power consumption with the optimized angle also at 45 degrees.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2021)
Article
Mathematics, Applied
A. J. Stacey, J. J. Shepherd
Summary: Biological reactors are essential in industrial applications for breaking down organic waste. This study focuses on the stability and local stability of a cascade of two continuously stirred tank reactors with Haldane growth function. The function of certain reactor parameters is derived to determine the number of critical points, allowing for the identification of parameter combinations that result in a single critical point under different bacterial removal rates. The research reveals that if the first reactor in the cascade has a single critical point for all bacterial removal rates, the next reactor will also have a single critical point. Global stability results are provided for specific cases. Additionally, simple proofs are presented for the local stability of critical points in reactors with general bacterial growth functions, bacteria and substrate input, and a death rate. Furthermore, a comparison is made between a two reactor cascade and a single reactor for the special case of zero bacteria input in the first reactor, considering various conditions such as residence times and death rates, following the pattern of previous studies using Monod and Contois growth functions.
COMPUTATIONAL & APPLIED MATHEMATICS
(2022)
Article
Microbiology
Jose Martin Marquez-Villa, Juan Carlos Mateos-Diaz, Jorge Alberto Rodriguez-Gonzalez, Rosa Maria Camacho-Ruiz
Summary: This study aimed to evaluate the operational conditions for producing lipopeptides by halophilic bacteria in stirred-tank bioreactors under batch cultures. The results showed that under the most favorable culture conditions, the emulsification index was higher than 70%, which is crucial for the synthesis of biosurfactants.
Article
Engineering, Chemical
Jing Zhang, Hongye Li, Jiaxin Yuan, Chengsong Zhang, Yaxia Li, Bin Gong
Summary: Multiple inclined hollow pipes were combined to form a self-priming jet (SPJ) impeller. The hydrodynamic and mixing characteristics in the tank were studied by numerical simulation. The feasibility of the numerical simulation model was verified by particle distribution experiments. The results showed that the turbulence intensity and vorticity were affected by the installation height and diameter of the impeller; the mixing performance was improved with increasing diameter and installation angle. The study on the enhanced mixing mechanism showed that the self-priming was generated in the lower part of the impeller, the flow was accelerated in the empty pipe, and the jet was generated in the upper part of the impeller. Self-priming and jet caused multiple axial internal circulation flows in the SPJ tank.
CHEMICAL ENGINEERING & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Tomas Kracik, Tomas Moucha
Summary: Mechanically agitated vessels serving as gas-liquid stirred tank reactors are commonly used in the global chemical, biochemical, pharmaceutical, and food industry, with gas flow increasing liquid level and gas holdup being a key characteristic influenced by vessel and impeller geometry, operational conditions, and chemical properties. This work focuses on the viscosity influence on gas holdup formation in laboratory and pilot plant stirred tank reactors at a wide range of experimental conditions, testing the impact of gas flow rate, impeller type, impeller diameter, batch viscosity, and other operational conditions. Broad experimental conditions were used to establish chemical engineering correlations for design and scale up.
Article
Engineering, Environmental
Rebeca Tormo-Budowski, Juan Carlos Cambronero-Heinrichs, J. Esteban Duran, Mario Masis-Mora, Didier Ramirez-Morales, Jose Pablo Quiros-Fournier, Carlos E. Rodriguez-Rodriguez
Summary: Hospital wastewater is rich in pharmaceutically active compounds (PhACs), which can end up in the environment due to the lack of effective treatments. White rot fungi, specifically Trametes versicolor, have shown to be an effective solution for this problem. Immobilizing the fungi in a lignocellulosic substrate has proved successful in treating wastewater. Two types of bioreactors, stirred tank and trickle-bed, were used in this study to treat synthetic and real hospital wastewater with T. versicolor. The trickle-bed bioreactor showed promising results in removing pharmaceuticals and detoxifying real wastewater.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Chemical
Philipp Waldherr, Chrysoula Bliatsiou, Lutz Boehm, Matthias Kraume
Summary: Filamentous fungi are used in industry as cell-factories due to their metabolic diversity, production capacity and secretion efficiency. The morphology of bio-agglomerates formed by the fungus Aspergillus niger in stirred tank bioreactors is influenced by hydrodynamic stress induced by the stirrer. Fragmentation experiments were conducted to examine the impact of stirrer type and stirring intensity on the morphology of bio-agglomerates.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2023)
Article
Biotechnology & Applied Microbiology
Benjaporn Sriputorn, Pattana Laopaiboon, Niphaphat Phukoetphim, Nawapol Uppatcha, Witchuta Phuphalai, Lakkana Laopaiboon
Summary: Optimal conditions for ethanol production from sweet sorghum stem juice by Saccharomyces cerevisiae SSJ01KKU were explored, yielding an average ethanol concentration of 120.96 g/L and ethanol productivity of 2.52 g/L.h. The repeated-batch ethanol fermentation in the system showed that at least eight cycles could be operated successfully, with significantly higher total ethanol production rate in the larger volume batch.
JOURNAL OF BIOTECHNOLOGY
(2021)
Article
Engineering, Environmental
Xiang Fang, Yihuan Yan, Xiujin Li, Fajiang He, Jiyuan Tu
Summary: This study numerically investigated the dynamic characteristics of flow patterns in an industrial CSTR test site with a downward pumping agitation system and varied pitched blade turbine (PBT) design. A novel approach was developed to visually distinguish the agitation zone in the CSTR tank, quantitatively assess the agitation performance, and assist the design of impeller spacing. The findings revealed that the pitched angle had significant effects on the shape and size of formed circulation loops, with 45 degrees being the critical value beyond which the agitation zone would rapidly shrink.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Guancheng Tan, Kun Qian, Shuxian Jiang, Jianqing Wang, Jiajun Wang
Summary: The influence of impeller type on the liquid-liquid dispersion system was investigated using computational fluid dynamics and the population balance model. The results showed that the Rushton turbine, pitched-blade turbine, and parabolic blade turbine produced different flow fields and turbulence distribution, leading to different droplet size distributions, breakage frequencies, and coalescence rates. The analysis revealed that for radial-type impellers (RT and PB), the dominant mechanism of droplet breakage was the turbulent inertial regime, while for the axial impeller (PBT), it was the turbulent viscous regime. RT and PB were found to produce smaller droplets compared to PBT, with reductions of about 16.4% and 10.7%, respectively. The higher turbulent dissipation rates of RT and PB explained their better performance in droplet breakup.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Editorial Material
Biotechnology & Applied Microbiology
Lu Lin, Rodrigo Ledesma-Amaro, Xiao-Jun Ji, He Huang
Summary: Nylons, important polyamide materials, can be synthesized from various monomers. Bio-based nylon monomers are traditionally obtained through chemical conversion from vegetable oils, but they can be more sustainably obtained through multienzymatic catalysis. For large-scale application of this process, enzyme engineering and process innovation must be combined.
TRENDS IN BIOTECHNOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Kaifeng Wang, Wenyang Zhao, Lu Lin, Tianjing Wang, Ping Wei, Rodrigo Ledesma-Amaro, Ai-Hui Zhang, Xiao-Jun Ji
Summary: This study developed a soft sensor based on an artificial neural network model to monitor the microbial lipid fermentation process of Yarrowia lipolytica. By analyzing and emphasizing the volume of sodium hydroxide and dissolved oxygen concentration as central parameters, it achieved high accuracy in monitoring dry cell weight, glucose concentration, and lipid production.
BIOTECHNOLOGY AND BIOENGINEERING
(2023)
Article
Agriculture, Multidisciplinary
Yizi Yu, Yufan Zhou, Kaifeng Wang, Tao Sun, Lu Lin, Rodrigo Ledesma-Amaro, Xiao-Jun Ji
Summary: Due to its unique aroma, gamma-decalactone is widely used in dairy products and other foods or beverages. The oleaginous yeast Yarrowia lipolytica has shown great potential in the production of this flavor compound. This review summarizes the biosynthesis and degradation pathways of Y. lipolytica, as well as the metabolic engineering strategies and process optimization strategies to increase gamma-decalactone accumulation.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2023)
Article
Cardiac & Cardiovascular Systems
Anwu Huang, Ying Chen, Yiwei Huang, Xiaojun Ji, Wenbing Jiang
Summary: MitraClip is a safe and effective strategy to treat post-myocardial infarction mitral regurgitation, as demonstrated in this case study.
JOURNAL OF CARDIOTHORACIC SURGERY
(2023)
Article
Biochemistry & Molecular Biology
Min-Yu Wang, Shun-Ju Cai, Jia-Chun Lin, Xiao-Jun Ji, Zhi-Gang Zhang
Summary: A new bacterial strain, Bacillus cereus TQ-2, capable of catalyzing the conversion of ketones to enantiopure alcohols with high activity and excellent enantioselectivity was discovered. The strain showed optimal performance at a temperature of 30 degrees C and a pH range of 5.0-9.0. Addition of glycerol, Ca2+ or K+ ions enhanced the catalytic activity. The versatile whole-cell biocatalyst demonstrated efficient reduction of diverse ketones and aldehydes to form corresponding alcohols.
Article
Engineering, Chemical
Jinlei Zeng, Yibo Tang, Jiyu Yang, Yue Yang, Ganlu Li, Xin Wang, Jiao Feng, Kequan Chen, Hui Li, Pingkai Ouyang
Summary: The coordination complex between metal ion and ligand is a promising method to prepare self-assembled enzyme nanoaggregates, which can effectively reduce carbon dioxide emissions from bioprocesses.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Hui Li, Xu Chen, Yibo Tang, Yue Yang, Feng He, Xin Wang, Ganlu Li, Kequan Chen, Pingkai Ouyang, Yuning Yang
Summary: In this study, 1,5-Pentanediamine hydrochloride (PDAH) was recovered and purified from 1,5-pentanediamine (PDA) fermentation broth using a cation exchange resin and crystallization. The high-quality crystal product obtained from resin eluting solution indicates the potential for industrial scale-up of PDAH separation.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2023)
Article
Agricultural Engineering
Kaifeng Wang, Lu Lin, Ping Wei, Rodrigo Ledesma-Amaro, Xiao-Jun Ji
Summary: An alternative strategy for producing nervonic acid-enriched plant oil was established by constructing orthogonal plant and non-plant biosynthesis pathways in Yarrowia lipolytica. By genetically engineering lipid metabolism and increasing cofactor supply, a stable strain was obtained that produced 57.84 g/L oils with 23.44% nervonic acid in fed-batch fermentation, which has the potential to substitute nervonic acid-enriched plant oil.
BIORESOURCE TECHNOLOGY
(2023)
Article
Cardiac & Cardiovascular Systems
Anwu Huang, Zhaolin Wang, Hua Tang, Zhuyin Jia, Xiaojun Ji, Xuehua Yang, Wenbing Jiang
Summary: This study aimed to determine the therapeutic efficiency and action mechanism of bardoxolone methyl (BARD) in myocardial ischemia/reperfusion (I/R) injury. The results showed that BARD could reduce cardiac injuries, decrease cardiomyocyte apoptosis, and inhibit oxidative stress. Mechanistically, BARD treatment significantly activated the Nrf2/HO-1 pathway.
CARDIOVASCULAR THERAPEUTICS
(2023)
Article
Agriculture, Multidisciplinary
Qian-Qian Peng, Qi Guo, Cheng Chen, Ping Song, Yue-Tong Wang, Xiao-Jun Ji, Chao Ye, Tian-Qiong Shi
Summary: This study successfully engineered an efficient yeast cell factory for overproducing patchoulol using systematic metabolic engineering strategies. By selecting a highly active patchoulol synthase, expanding the mevalonate precursor pool, and optimizing the downregulation of squalene synthesis, the patchoulol titer was significantly increased. The highest reported patchoulol titer of 2.864 g/L was achieved in a 5 L bioreactor.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2023)
Article
Engineering, Chemical
Yibo Tang, Jiyu Yang, Jinlei Zeng, Chenxin Hou, Jiao Feng, Ganlu Li, Hui Li, Kequan Chen, Pingkai Ouyang, Weimin Tan
Summary: Based on environmental concerns and the worldwide energy crisis, CO2 photoreduction into value-added chemicals has attracted attention. A nanophotocatalyst, constructed by embedding formate dehydrogenase and CdS into a zeolitic imidazolate framework, promotes CO2 photoreduction by relying on photo and chemical reducing forces. The addition of hydrogen peroxide (H2O2) as a reducing force increases the yield of formic acid and the maximum catalytic rate significantly. This work provides a green method for promoting CO2 photoreduction to prepare valuable chemicals and solar fuels.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Biochemical Research Methods
Zeqi Song, Wenbo Lin, Xiyu Duan, Liping Song, Chong Wang, Hui Yang, Xiangyang Lu, Xiaojun Ji, Yun Tian, Huhu Liu
Summary: In this study, an engineered Yarrowia lipolytica strain was constructed to efficiently produce cordycepin from glucose by introducing the cordycepin biosynthetic pathway derived from Cordyceps militaris. Metabolic engineering strategies were combined to enhance the synthetic ability of the engineered strain, and fermentation conditions were optimized. The study demonstrates the potential of Y. lipolytica as a cell factory for cordycepin synthesis and provides a model for the green biomanufacturing of other nucleoside antibiotics using artificial cell factories.
ACS SYNTHETIC BIOLOGY
(2023)
Article
Biochemical Research Methods
Tao Sun, Yizi Yu, Lexin Wang, Yichun Qi, Tian Xu, Zhe Wang, Lu Lin, Rodrigo Ledesma-Amaro, Xiao-Jun Ji
Summary: The production of biodiesel from renewable lignocellulosic biomass using microbial lipids is a promising strategy to promote green energy transition. In this study, an engineered Yarrowia lipolytica strain was constructed using metabolic engineering and adaptive laboratory evolution, which efficiently produced lipids from both glucose and xylose. By adopting the Push-Pull-Block strategy, the lipid content reached 73.42% of the dry cell weight. Furthermore, the engineered strain integrated a heterologous xylose utilization pathway and underwent ALE, resulting in a strain that could accumulate 53.64% DCW of lipids from xylose with a lipid titer of 16.25 g/L. This work highlights the potential of microbial lipid overproduction from lignocellulose using engineered Y. lipolytica.
ACS SYNTHETIC BIOLOGY
(2023)
Editorial Material
Microbiology
Xueqin Lv, Yu Wang, Boyang Ji, Xiao-Jun Ji
Article
Agricultural Engineering
Jinpeng Wang, Xiao Yu, Kaifeng Wang, Lu Lin, Hu-Hu Liu, Rodrigo Ledesma-Amaro, Xiao-Jun Ji
Summary: This study explored the optimal biosynthetic pathways for customized production of co6-PUFAs in Y. lipolytica and effectively increased the proportions of co6-PUFAs in total fatty acids through various strategies. The customized strains synthesized GLA, DGLA, and ARA with high titers, providing valuable insights into the production of functional co6-PUFAs.
BIORESOURCE TECHNOLOGY
(2023)
Article
Engineering, Chemical
Qing Han, Mengqing Shi, Linkai Han, Di Liu, Mingwei Tong, Yuxin Xie, Zhonghua Xiang
Summary: Developing highly efficient bifunctional oxygen electrocatalysts is crucial for zinc-air flow batteries. Metal-organic frameworks (MOFs) and covalent organic polymers (COPs) have emerged as promising alternatives due to their designable and controllable atomic-level structures. However, their catalytic performances are limited by conductivity and catalytic activity. In this study, nanosheet FeNi-MOF and iron phthalocyanine rich COP hybrid materials are assembled through the pi-pi stacking effect to create highly efficient bifunctional electrocatalysts. The resulting catalyst exhibits superior catalytic performance and stability, making it a promising candidate for zinc-air flow batteries.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Daria Grigorash, Dmytro Mihrin, Rene Wugt Larsen, Erling H. Stenby, Wei Yan
Summary: The article introduces a new approach to describe the cross-association between molecules, allowing for the simulation of weakly bound molecular complexes with different conformations in mixtures. By incorporating this approach into the equation of state, accurate predictions of vapor-liquid equilibrium and liquid-liquid equilibrium can be made. The new method is validated through experiments on alcohol and acid mixtures, with the results compared to experimental data, demonstrating its accuracy and reliability.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Mohammed Al-Sharabi, Daniel Markl, Vincenzino Vivacqua, Prince Bawuah, Natalie Maclean, Andrew P. E. York, Axel Zeitler
Summary: This study used terahertz pulsed imaging to investigate the transport process of different solvents into ceramic catalytic materials. The results showed that the heating rate of the samples influenced the water transport rate, while the viscosity of 1-octanol slowed down its transport.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Chukwunonso Anyaoku, Sati Bhattacharya, Rajarathinam Parthasarathy
Summary: This study aimed to enhance understanding of settling dynamics in viscoelastic fluids by developing a semi-empirical correlation and a dimensionless ratio, which accurately described the characteristics of settling suspensions.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Antti I. Koponen, Janika Viitala, Atsushi Tanaka, Baranivignesh Prakash, Olli-Ville Laukkanen, Ari Jasberg
Summary: This study focuses on the development of foam application chemicals for the paper and board industry. The research explores the rheology of the polyvinyl alcohol foam used in the process. Measurements were conducted to determine the foam viscosity and slip flow. The results suggest that slip flow contributes significantly to the total flow rate, and the obtained viscosity and slip models provide a solid foundation for industrial processes.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Dalei Sun, Jinghui Cai, Yating Yang, Zhiwu Liang
Summary: In this study, Fe-doped alpha-Bi2O3 catalysts with different Fe/Bi molar ratios were synthesized and utilized in the carbonylation of isobutyl amine with CO2. The results showed that Fe doping significantly enhanced the catalytic abilities of alpha-Bi2O3.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Yuan Tian, Xinxin Wang, Yanrong Liu, Wenping Hu
Summary: This paper predicts the solubility of nitrogen gas in ionic liquids (ILs) using two quantitative structure-property relationship (QSPR) models. By combining machine learning methods and ionic fragments contribution method, the accuracy and reliability of the prediction models are improved.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Liwang Wang, Wei Liu, Pan Yang, Yulong Chang, Xiaoxu Duan, Lingyu Xiao, Yaoming Hu, Jiwei Wu, Liang Ma, Hualin Wang
Summary: This study investigates the effective phase interfacial area (ae) of hydro-jet cyclones at different injection angles. The results show that a 45 degrees upward incidence angle yields the most favorable flow field characteristics for efficient mass transfer. The significant enhancement in ae of the hydro-jet cyclones offers the advantage of reducing equipment volume and cost savings.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Chuanjun Wu, Jiangzhi Chen, Jiyue Sun, I-Ming Chou, Shenghua Mei, Juezhi Lin, Lei Jiang
Summary: In this study, the solubility of H2S hydrate in water was measured using Raman spectroscopy. The results showed that the solubility increases with temperature under certain equilibrium conditions, and the solubility also depends on pressure and temperature under different equilibrium conditions. A thermodynamic model based on the van der Waals-Platteeuw theory was developed to predict the solubility, demonstrating its accuracy.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Lorenzo Brivio, Serena Meini, Mattia Sponchioni, Davide Moscatelli
Summary: This study investigates the influence of three main parameters and proposes a kinetic model to predict the optimal operating conditions for high yield of dimethyl terephthalate (DMT) in the chemical recycling process of polyethylene terephthalate (PET).
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Hongju Lin, Fanhui Liao, Yanchang Chu, Mingyu Xie, Lun Pan, Yuanyuan Wang, Lijian Leng, Donghai Xu, Le Yang, Gangfeng Ouyang
Summary: A honeycomb NiCo/C-Na catalyst with a micro-meso-macroporous structure has been fabricated and shown to have significantly higher catalytic activity for the decarboxylation of fatty acids. It also proves to be efficient in upgrading sludge HTL bio-crude, resulting in a biofuel with decreased viscosity and increased density.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Xiaoxian Li, Rui Li, Min Lin, Mingde Yang, Yulong Wu
Summary: A series of coated non-noble metal porous carbon catalysts were synthesized and applied to the aqueous-phase deoxygenation of algal bio-oil. One of the catalysts showed excellent deoxygenation selectivity and catalytic activity at 250 degrees C. The catalyst exhibited good hydrothermal stability and the reaction mechanism was proposed based on product analysis and active site analysis.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
M. V. Chudakova, M. V. Popov, P. A. Korovchenko, E. O. Pentsak, A. R. Latypova, P. B. Kurmashov, A. A. Pimenov, E. A. Tsilimbaeva, I. S. Levin, A. G. Bannov, A. V. Kleymenov
Summary: A series of catalysts with different potassium contents were prepared using solution combustion synthesis and characterized using various techniques. The results showed that the potassium content affected the phase composition and texture of the catalysts. The addition of a small amount of potassium resulted in a change in particle size distribution, leading to higher hydrogen yield. The Ni-1%K2O/Al2O3 catalyst exhibited the highest hydrogen yield at temperatures of 675 and 750 degrees Celsius.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Aliakbar Roosta, Nima Rezaei
Summary: In this study, we modified the electrolyte cubic plus association equation of state (e-CPA EoS) and integrated it with two electrical conductivity models to estimate the electrical conductivity of 11 monovalent electrolyte solutions in water. The modified e-CPA model demonstrated better performance and the hybridization with electrical conductivity models resulted in two predictive models for estimating the electrical conduction of dilute and concentrated electrolyte solutions. These predictive models showed relative average percentage deviations (AARD) of 11.15% and 13.87% over wide ranges of temperature and electrolyte concentration.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Haoren Niu, Jianzheng Wang, Qingzhu Jia, Qiang Wang, Jin Zhao, Fangyou Yan
Summary: A study developed two quantitative structure-property relationship models for the complexation performance of alpha- and beta-cyclodextrins and validated their stability and predictive ability through internal and external validation. The models showed robustness and satisfactory performance, as demonstrated by the experimental results and model validations. These models can effectively predict the binding constants between cyclodextrins and various types of molecules, providing valuable tools for cyclodextrin design.
CHEMICAL ENGINEERING SCIENCE
(2024)
