Article
Energy & Fuels
Huapeng Ma, Zemeng Zhao, Yuanteng Shi, Hao Xiao, Rong Han, Lei Wang, Lei Shao
Summary: The study found that the O-3/Fenton@RPB + coagulation tandem process has good removal efficiency for coal gasification wastewater, improving biodegradation, color removal, and predicting mass transfer performance effectively.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2022)
Article
Engineering, Chemical
Chuang Liang, Yu-Gan Zhu, Bao-Chang Sun, Guang-Wen Chu, Jian-Feng Chen
Summary: A novel rotating packed bed reactor integrated with plasma (plasma-RPB) was developed to enhance wastewater treatment by fully utilizing ozone. The ozone-water mass transfer efficiency of the plasma-RPB with different liquid distributor structures was evaluated. The plasma-RPB exhibited prominent degradation performance, with sulfamethoxazole and TOC removal efficiency reaching up to 87.6% and 82.7%, respectively, within 5 minutes.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Environmental Sciences
Rameez Ahmad Aftab, Sadaf Zaidi, Mohd Danish, Sayed Mohammad Adnan, Khursheed B. Ansari, Mohammad Danish
Summary: This study applied support vector regression (SVR) to predict phenol adsorption on activated carbon in RPB, finding that the SVR model and ANN model had similar predictive performance, with the ANN model slightly outperforming the SVR model. In the test dataset, the coefficient of determination (R-2) and root mean square error (RMSE) values for the MR RPB adsorption model were 0.934 and 0.149, while for the SVR and ANN-based models, these values were 0.996 and 0.045, and 0.998 and 0.027, respectively.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Energy & Fuels
Rong Han, Xihong Fang, Yunhua Song, Lei Wang, Yuan Lu, Huapeng Ma, Hao Xiao, Lei Shao
Summary: This study investigates the oxidation process of ammonium sulfite in a rotating packed bed using ozone produced from air. The effects of operating parameters and reaction kinetics were analyzed. The experimental results show that the oxidation percentage of ammonium sulfite increases with liquid flow rate, liquid circulation time, and reaction temperature, but decreases with the initial concentration of ammonium sulfite. Additionally, the efficient absorption of ozone in the rotating packed bed significantly enhances the oxidation efficiency of ammonium sulfite, with ozone oxidation achieving higher percentages compared to air oxidation.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2022)
Article
Environmental Sciences
Lei Wang, Jimmy Yun, Hanxiao Zhang, Jianmeng Si, Xihong Fang, Lei Shao
Summary: In this study, a rotating packed bed (RPB) was used to enhance ozone transfer and BPA degradation, improving the efficiency of ozonation. The effects of operational parameters on degradation efficiency and overall mass transfer coefficient were investigated, showing that RPB effectively promoted gas transfer and BPA degradation.
Article
Energy & Fuels
Shiyu Yuan, Zhiqiang Liu, Guozhu Liu
Summary: A high-gravity deoxygenation method using rotating packed bed was proposed in this study to enhance the gas-liquid mass transfer process of jet fuels. The effects of operation parameters on deoxygenation efficiency were systematically studied. This method showed remarkable advantages and is of great significance for the development of jet fuel deoxygenation technology.
Article
Engineering, Multidisciplinary
Li Liu
Summary: The study compared the empirical model and ANN model for predicting VOCs removal efficiency in RPB, finding that the ANN model outperformed the empirical model in predicting outlet concentrations of VOCs. The effects of factors on removal efficiency were analyzed by ANN model with high precision, providing insights for timely adjustment of operation conditions to meet emission standards.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Article
Engineering, Chemical
Dawid Zawadzki, Micha Blatkiewicz
Summary: The chemical industry requires new technologies for clean and energy-efficient production with increased yield. The rotating packed bed, a novel technology employing centrifugal force for enhanced mass transfer, faces pressure drop as a major challenge. In this study, a universal dry pressure drop model for rotating packed bed with baffle-based structured internals was developed and validated using experimental data. The model includes linear pressure drop due to friction, local pressure drops caused by changes in gas flow direction, and pressure drop due to rotation. Experimental tests were conducted with nine packings of varying diameters, baffle shapes, and sizes, at different rotational speeds and gas flow rates. By considering the differences in baffle geometries, a unifying shape factor was utilized, considering the solid material volume and packing cross-sectional area. The relative errors of the stationary and overall pressure drop model predictions were below 15% and 18%, respectively.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2023)
Article
Engineering, Chemical
Tobias Pyka, Jorg Koop, Christoph Held, Gerhard Schembecker
Summary: This article presents a detailed analysis of dry pressure drop in two-rotor packed beds, providing correlations for the prediction of pressure drop based on the data from one-rotor beds. It offers valuable insights for the design and operation of packed beds.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Engineering, Multidisciplinary
Ahmed M. Alatyar, Abdallah S. Berrouk, Mohamed S. Alshehhi, Muhammed Saeed, Haitem Hassan-Beck, Krishnaswamy Nandakumar
Summary: The current study aims to enhance the hydraulic performance of Rotating Packed Beds (RPB) by modifying the geometrical construction of the inner cavity, outlet pipe, and packing. Four novel geometries of the RPB were proposed and analyzed using a validated CFD model, and it was found that optimizing the flow pattern at the exit of the packing by modifying the inner cavity's shape can reduce the total pressure drops by up to 22%. The addition of a nozzle at the entry of the outlet pipe further decreases the pressure drop by 13%.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Ahmed M. Alatyar, Abdallah S. Berrouk, Krishnaswamy Nandakumar
Summary: This study investigates the behavior of liquid droplets impacting on a rotating wire and a rotating wire mesh within a Rotating Packed Bed (RPB) using the 2D-VOF approach and computational fluid dynamics (CFD) model. The study validates the boundaries of different breakup modes and proposes a data processing algorithm. The results show that the deposited liquid film has a key role in enhancing the splashing phenomena in RPBs, and the radial distribution of liquid droplets in RPBs is analyzed.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2023)
Article
Materials Science, Ceramics
Chia-Chang Lin, Jun-Hong Lin, Kuan-Yi Wu
Summary: Nanostructured goethite was successfully prepared by chemical precipitation in a rotating packed bed at 25 degrees C. The prepared goethite had a crystallite size of 20 nm and a needle shape with a length of 500 nm. It exhibited a BET specific surface area of 23 m2/g and showed potential as an adsorbent for dye removal with maximum adsorption capacities of 29.1 mg/g for Reactive Red 2 and 24.5 mg/g for Orange G.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Environmental
Tianyang Wu, Hanxiao Zhang, Zhibang Liu, Taoran Liu, Peng Jiang, Moses Arowo, Lei Shao
Summary: This study investigated the treatment of amaranth wastewater using ozone in a rotating zigzag bed (RZB). The results showed that the degradation efficiency of amaranth increased with an increase in initial pH, rotational speed of RZB, initial O-3 concentration, and gas flow rate, but decreased with an increase in both liquid flow rate and initial amaranth concentration. The decolorization rate of the wastewater reached 92.8% within a few seconds in the RZB, indicating that RZB can significantly improve the degradation efficiency of amaranth.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Engineering, Chemical
Zhicheng Lu, Shuo Liu, Zhi Qian, Jianzhong Zheng, Jiahao Zhang, Yihao Wang, Xiaoxi Duan
Summary: In this study, an efficient catalyst goethite (alpha-FeOOH) was found to generate (OH)-O-center dot in an alkaline Fenton system, and an in situ reactive oxygen species utilization mechanism was proposed for the high-gravity-enhanced alpha-FeOOH-catalyzed oxidation of NO. The results from mathematical modeling and experiments showed that this process has a high efficiency in removing NO.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Engineering, Chemical
Jia-Lin Kang, Ching-Jung Chen, Chien-Hao Wu, David Shan-Hill Wong, Shi-Shang Jang, Chung-Sung Tan
Summary: This study presents a dynamic model for designing a rotating packed bed (RPB) that demonstrates the absorption of volatile organic compounds with circulation. The model's industrial applicability is validated using steady-state and dynamic RPB experimental data. The effects of operational variables such as rotational speed and gas to liquid ratio on the absorption efficiency are discussed. The findings highlight the superior mass-transfer efficiency of the RPB compared to conventional packed bed columns.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2022)
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)