Article
Engineering, Environmental
Jessica O. B. Lira, Humberto G. Riella, Natan Padoin, Cintia Soares
Summary: The hybrid CFD-ANN-GA method was proposed for the analysis and optimization of micro-photocatalytic reactors, with NOx abatement as a case study. The ANN successfully predicted the overall conversion of NO in the micro device, and GA was used to find the optimal operating conditions that maximize the NO conversion. The optimal set of operating conditions was determined based on a Pareto front analysis in a multi-objective optimization.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Sayonara Vanessa de Medeiros Lima, Natan Padoin, Cintia Soares
Summary: This study focused on the photochemical degradation of tetracycline in the innovative photoreactor FluHelik, using computational fluid dynamics (CFD) simulations to optimize operational conditions and enhance reactor performance at the laboratory scale.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Construction & Building Technology
Yun Kyu Yi, Manal Anis, Keun Jang, You-Jeong Kim
Summary: The recent global pandemic highlights the importance of natural ventilation in reducing energy consumption and airborne contamination. This research aims to improve natural ventilation in classrooms with one-sided openings through the design of window wing walls and the utilization of data-driven design and Computational Fluid Dynamics (CFD) simulations.
JOURNAL OF BUILDING ENGINEERING
(2023)
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
Chemistry, Analytical
Bahar Hooshdaran, Masoud Haghshenasfard, Seyyed Hossein Hosseini, Mohsen Nasr Esfahany, Gartzen Lopez, Martin Olazar
Summary: This study applied a 2D Euler-Euler multiphase CFD model with the KTGF theory to describe biomass pyrolysis in a spouted bed reactor. By coupling a CFD hydrodynamic model with a pyrolysis kinetic model, the study successfully predicted biomass pyrolysis product yields, demonstrating the potential of CFD techniques for reactor design and optimization.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2021)
Article
Chemistry, Analytical
Jun Na, Handuo Zhang, Jiaxin Lian, Bin Zhang
Summary: To effectively apply BranchyNet in edge intelligent applications, this paper proposes a genetic algorithm-based online partitioning approach to split the whole network into multiple devices. The approach achieves shorter execution time, lower energy cost, and faster optimization of the deployment plan. The results demonstrate the algorithm's capability to dynamically meet the requirements of deploying intelligent applications at the edge.
Article
Energy & Fuels
Yohannis Tobo, Ashraf Lotfi, Luis D. Virla, Nader Mahinpey
Summary: This study successfully overcomes the challenges involved in the experimental investigation of biomass pyrolysis kinetics using a CFD model and simulation. The model provides a detailed characterization and visualization of the pyrolysis kinetics, and predicts the composition of the products obtained from biomass feedstock under specific reactor conditions.
Article
Engineering, Chemical
Lijuan Zhao, Zhe Tan, Xiaoguang Zhang, Qijun Zhang, Wei Wang, Qiang Deng, Jie Ma, De'an Pan
Summary: In this study, the breakage process of the PbCO3 product layer in the reaction process of carbonate desulfurization lead paste was investigated. Computational fluid dynamics simulation was used to optimize the rotation conditions and enhance the rotor and stator wall shear stress, providing a reference for the design and optimization of desulfurization reactors.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Analytical
Xueer Pan, Wenhao Lian, Nan Zhang, Jingxuan Yang, Zhonglin Zhang, Xiaogang Hao, Guoqing Guan
Summary: A mass transfer model based on the spatial superposition assumption is developed to study the coal pyrolysis process. The simulated volatiles yield using this model shows better agreement with experimental data compared to the conventional Jung-La Nauze equation. It is found that the mass transfer coefficients calculated by the Jung-La Nauze equation are overestimated, indicating an overestimation of the mass transfer process predicted with a uniform structure. The results provide insights into the mass transfer and reaction process in gas-solid fluidized systems by considering the influence of heterogeneous structures.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Chemistry, Multidisciplinary
Jun Na, Handuo Zhang, Jiaxin Lian, Bin Zhang
Summary: To fully utilize the potential of edge devices, this paper proposes a layer-based DNN partitioning approach and an improved genetic algorithm to address the problem. Experimental results show that the proposed algorithm can achieve faster running time and better deployment performance.
APPLIED SCIENCES-BASEL
(2022)
Article
Engineering, Chemical
Xueer Pan, Wenhao Lian, Nan Zhang, Jingxuan Yang, Zhonglin Zhang, Xiaogang Hao, Guoqing Guan
Summary: A mass transfer model based on spatial superposition assumption is proposed to reflect the effect of heterogeneous structure on downer mass transfer behavior. This model requires fewer concentration parameters compared to the multi-scale method and is in good agreement with experimental data. The presence of clusters significantly affects gas-solid mass transfer effectiveness, deteriorating the reaction rate. The simulation shows that mass transfer near the inlet region plays a dominant role, while along the flow direction, the influence of the reaction process gradually becomes stronger.
Article
Thermodynamics
Amnani Shamjuddin, Nurul Suhada Ab Rasid, Makam Mba Michele Raissa, Muhammad Anif Abu Zarin, Wan Nor Nadyaini Wan Omar, Ardiyansyah Syahrom, Mohd Al Fatihhi Mohd Szali Januddi, Nor Aishah Saidina Amin
Summary: Pre-treatment is crucial in enhancing cellulose accessibility from lignocellulosic biomass like empty fruit bunch. Ozonolysis pre-treatment is a green alternative for isolating cellulose from EFB. A diffusion-reaction model of EFB ozonolysis in a novel reactor was developed, showing larger biomass particles consume more ozone and have faster delignification rates. Computational simulations revealed that larger particles have lower ozone velocity but higher surface concentration.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Review
Mechanics
Mori Mani, Andrew J. Dorgan
Summary: In this review, the increasing use of computational fluid dynamics in the aerospace industry for designing and studying aircraft is discussed. The importance of geometry, turbulence models, numerical algorithms, mesh adaptation, and design optimization is highlighted. Challenges and suggestions for investment in each area are provided. The review concludes by envisioning a future where certification by analysis and model-based design are standard practices, and emphasizing the necessary steps to lead the industry in that direction.
ANNUAL REVIEW OF FLUID MECHANICS
(2023)
Article
Engineering, Environmental
S. Ahmed, M. G. Rasul, M. A. Sattar, M. I. Jahirul
Summary: The heterogeneous photocatalytic oxidation process using TiO2 and UV light is a promising method for treating waste and stormwater containing various organic substances. However, the lack of suitable computational fluid dynamics (CFD) models poses challenges for its industrial-scale application. This study designed and analyzed a 3D flat plate photocatalytic reactor using CFD code FLUENT. The results showed good agreement between the CFD modeling and experimental data, indicating the accuracy of the CFD model in predicting velocity and phenol concentration at different flow rates.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Engineering, Chemical
Thomas P. John, Claudio P. Fonte, Adam Kowalski, Thomas L. Rodgers
Summary: In this study, an angular momentum balance combined with computational fluid dynamics was used to correlate the power, flow, and mixer geometry of down-pumping pitched blade turbine geometries. The models developed from the results allow the prediction of power from flow (or vice versa) for different geometries, and it was found that the choice of measurement method can affect the relationship between power, flow, and impeller geometry.
Article
Green & Sustainable Science & Technology
Dela Quarme Gbadago, Hyun-Taek Oh, Dong-Hoon Oh, Chang-Ha Lee, Min Oh
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2020)
Article
Green & Sustainable Science & Technology
Youngtak Cho, Gyuyeong Hwang, Dela Quarme Gbadago, Sungwon Hwang
Summary: In this study, an artificial neural network (ANN) model was developed and integrated with model predictive control (MPC) to provide optimal conditions for operating the PEMFC system. The developed NNMPC yielded improved system power by maintaining the optimal stack temperature, cathode pressure and membrane hydration for current changes at a low computational cost. The optimized power of the PEMFC system showed an average increase of 10.9% compared to the fixed-setpoint condition.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Nanoscience & Nanotechnology
Chaeeun Yu, Dela Quarme Gbadago, Seok-Ki Hyeong, Seoung-Ki Lee, Sungwon Hwang, Naechul Shin
Summary: This study aims to achieve uniform optoelectronic quality of metal halide perovskite (MHP) films through optimized substrate positioning and vapor-based fabrication. By depositing a PbI2 primary layer vertically and subsequent conversion horizontally, highly uniform MAPbI(3) films with enhanced optoelectronic device performance were obtained.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Chemical
Jiyoung Moon, Dela Quarme Gbadago, Sungwon Hwang
Article
Engineering, Environmental
Xinping Zhang, Yuxin Guo, Xiaoyang Liu, Shun-Yu Wu, Ya-Xuan Zhu, Shao-Zhe Wang, Qiu-Yi Duan, Ke-Fei Xu, Zi-Heng Li, Xiao-Yu Zhu, Guang-Yu Pan, Fu-Gen Wu
Summary: This study develops a nanotrigger HCFT for simultaneous photodynamic therapy and light-triggered ferroptosis therapy. The nanotrigger can relieve tumor hypoxia, induce enhanced photodynamic reaction, and facilitate the continuation of Fenton reaction, ultimately leading to lethal ferroptosis in tumor cells.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Olumide Bolarinwa Ayodele, Toyin Daniel Shittu, Olayinka S. Togunwa, Dan Yu, Zhen-Yu Tian
Summary: This study focused on the semihydrogenation of acetylene in an ethylene-rich stream using two alloyed Pt catalysts PtCu and PtCo. The PtCu catalyst showed higher activity and ethylene yield compared to PtCo due to its higher unoccupied Pt d-orbital density. This indicates that alloying Pt with Cu is more promising for industrial relevant SHA catalyst.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Guowei Chen, Wen-Cheng Chen, Yaozu Su, Ruicheng Wang, Jia-Ming Jin, Hui Liang, Bingxue Tan, Dehua Hu, Shaomin Ji, Hao-Li Zhang, Yanping Huo, Yuguang Ma
Summary: This study proposes an intramolecular dual-locking design for organic luminescent materials, achieving high luminescence efficiency and performance for deep-blue organic light-emitting diodes. The material also exhibits unique mechanochromic luminescence behavior and strong fatigue resistance.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Joren van Stee, Gregory Hermans, Jinu Joseph John, Koen Binnemans, Tom Van Gerven
Summary: This work presents a continuous solvent extraction method for the separation of cobalt and nickel in a millifluidic system using Cyphos IL 101 (C101) as the extractant. The optimal conditions for extraction performance and solvent properties were determined by investigating the effects of channel length, flow rate, and temperature. The performance of a developed manifold structure was compared to a single-channel system, and excellent separation results were achieved. The continuous separation process using the manifold structure resulted in high purity cobalt and nickel products.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Yan Xu, Jingai Jiang, Xinyi Lv, Hui Li, Dongliang Yang, Wenjun Wang, Yanling Hu, Longcai Liu, Xiaochen Dong, Yu Cai
Summary: A programmed gas release nanoparticle was developed to address the challenges in treating diabetic infected wounds. It effectively removes drug-resistant pathogens and remodels the wound microenvironment using NO and H2S. The nanoparticle can eliminate bacteria and promote wound healing through antibacterial and anti-inflammatory effects.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Tong Xia, Zhilin Xi, Lianquan Suo, Chen Wang
Summary: This study investigated a highly efficient coal dust suppressant with low initial viscosity and high adhesion-solidification properties. The results demonstrated that the dust suppressant formed a network of multiple hydrogen bonding cross-linking and achieved effective adhesion and solidification of coal dust through various chemical reactions.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Jinzhi Cai, Zhenshan Li
Summary: A density functional theory-based rate equation was developed to predict the gas-solid reaction kinetics of CaO carbonation with CO2 in calcium looping. The negative activation energy of CaO carbonation close to equilibrium was accurately predicted through experimental validation.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Jianxiong Chen, Fuhao Ren, Ningning Yin, Jie Mao
Summary: This study presents an economically efficient and easily implementable surface modification approach to enhance the high-temperature electrical insulation and energy storage performance of polymer dielectrics. The self-assembly of high-insulation-performance boron nitride nanosheets (BNNS) on the film surface through electrostatic interactions effectively impedes charge injection from electrodes while promoting charge dissipation and heat transfer.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Zijian Li, Zhaohui Yang, Shao Wang, Hongxia Luo, Zhimin Xue, Zhenghui Liu, Tiancheng Mu
Summary: This study reports a strategy for upgrading polyester plastics into value-added chemicals using electrocatalytic methods. By inducing the targeted transfer of *OH species, polyethylene terephthalate was successfully upgraded into potassium diformate with high purity. This work not only develops an excellent electrocatalyst, but also provides guidance for the design of medium entropy metal oxides.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Navneet Singh Shekhawat, Surendra Kumar Patra, Ashok Kumar Patra, Bamaprasad Bag
Summary: This study primarily focuses on developing a sulphur dyeing process at room temperature using bacterial Lysate, which is environmentally friendly, energy and cost effective, and sustainable. The process shows promising improvements in dye uptake and fastness properties.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Dengjia Shen, Hongyang Ma, Madani Khan, Benjamin S. Hsiao
Summary: This study developed cationic PVC nanofibrous membranes with high filtration and adsorption capability for the removal of bacteria and hexavalent chromium ions from wastewater. The membranes demonstrated remarkable performance in terms of filtration efficiency and maximum adsorption capacity. Additionally, modified nanofibrous membranes were produced using recycled materials and showed excellent retention rates in dynamic adsorption processes.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Xiaoyan Wang, Zhikun Wang, Ben Jia, Chunling Li, Shuangqing Sun, Songqing Hu
Summary: Inspired by photosystem II, self-supported Fe-doped NiCoP nanowire arrays modified with carboxylate were constructed to boost industrial-level overall water splitting by employing the concerted proton-coupled electron transfer mechanism. The introduction of Fe and carboxyl ligand led to improved catalytic activity for HER and OER, and NCFCP@NF exhibited long-term durability for overall water splitting.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Pengyao Yu, Ge Yang, Yongming Chai, Lubomira Tosheva, Chunzheng Wang, Heqing Jiang, Chenguang Liu, Hailing Guo
Summary: Thin LTA zeolite membranes were prepared through secondary growth of nano LTA seeds in a highly reactive gel, resulting in membranes with superior permeability and selectivity in gas separation applications.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Baiqin Zhou, Huiping Li, Ziyu Wang, Hui Huang, Yujun Wang, Ruichun Yang, Ranran Huo, Xiaoyan Xu, Ting Zhou, Xiaochen Dong
Summary: The use of machine learning to predict the performance of specific adsorbents in phosphate adsorption shows great promise in saving time and revealing underlying mechanisms. However, the small size of the dataset and insufficient detailed information limits the model training process and the accuracy of results. To address this, the study employs a fuzzing strategy that replaces detailed numeric information with descriptive text messages on the physiochemical properties of adsorbents. This strategy allows the recovery of discarded samples with limited information, leading to accurate prediction of adsorption amount, capacity, and kinetics. The study also finds that phosphate uptake by adsorbents is generally through physisorption, with some involvement of chemisorption. The framework established in this study provides a practical approach for quickly predicting phosphate adsorption performance in urgent scenarios, using easily accessible information.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Paula Alejandra Lamprea Pineda, Joren Bruneel, Kristof Demeestere, Lisa Deraedt, Tex Goetschalckx, Herman Van Langenhove, Christophe Walgraeve
Summary: This study evaluates the use of four esterified fatty acids and three vegetable oils as absorption liquids for hydrophobic VOCs. The experimental results show that isopropyl myristate is the most efficient liquid for absorbing the target VOCs.
CHEMICAL ENGINEERING JOURNAL
(2024)