Article
Energy & Fuels
Shuo-Zhe Zhou, Qun-Jie Xu, Xi-Bao Zhang, Zheng-Hong Luo
Summary: This study aims to develop reliable correlations for predicting heat transfer coefficients in bubble columns, considering various factors that influence these coefficients, which can be applied in accurately predicting heat transfer coefficients in bubble columns.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2021)
Review
Engineering, Multidisciplinary
Shujun Geng, Zai-Sha Mao, Qingshan Huang, Chao Yang
Summary: Pneumatically agitated slurry reactors, such as bubble column reactors and airlift loop reactors, play a crucial role in gas-liquid-solid multiphase reactions. They offer low shear stress, excellent mixing, and efficient mass/heat transfer properties, making them widely used in biological fermentation and energy chemical industries. To enhance performance and meet industrial demands, process intensification is essential.
Article
Engineering, Chemical
Feng Ye, Peng Zhao, Haoliang Wang, Jingcai Cheng, Xiangyang Li, Chao Yang
Summary: It is found that the error of image-based method for polydisperse particles is significantly affected by the overlap effects. Therefore, a new measurement method is proposed, which cuts the particles into several classes based on their size range and measures each class with appropriate optical parameters. The results are then combined to obtain the distribution of particle property.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Engineering, Chemical
Elham Dorostkar, Mohammad Hasan Khademi, Amir Rahimi
Summary: The study utilized a varying-bubble model to simulate a slurry bubble-column reactor, demonstrating good compatibility in handling variations in chemical species, catalyst concentration, gas and liquid phase pressure drops. Results indicated that the contribution of mass transfer significantly outweighs pressure drop in increasing bubble size.
CHEMICAL ENGINEERING & TECHNOLOGY
(2021)
Article
Engineering, Chemical
Phaly Ham, Saret Bun, Pisut Painmanakul, Kritchart Wongwailikhit
Summary: This study analyzed the impact of different types of air diffusers on bubble hydrodynamics and mass transfer performance, finding that F-sand and C-sand diffusers performed better in terms of bubble size and mass transfer coefficient. Additionally, the airlift reactor (ALR) showed improved bubble maintenance and mass transfer performance compared to the bubble column reactor (BCR).
Article
Computer Science, Interdisciplinary Applications
Srdjan Jovic
Summary: This study combines CFD and ANFIS to propose a new viewpoint for multiphase modeling and validates the accuracy of the Euler-Euler approach, showing that the flow pattern and gas hold-up of a bubble column reactor are mainly influenced by the height of the column. The results suggest that ANFIS is a robust method for predicting hydrodynamics parameters and the model's accuracy can be further enhanced by considering more meteorological parameters as input values.
ENGINEERING WITH COMPUTERS
(2021)
Review
Engineering, Chemical
Le Li, Yansheng Zhao, Wenhao Lian, Chun Han, Qian Zhang, Wei Huang
Summary: Bubble/Slurry bubble column reactors are widely used in the chemical industry, requiring heat exchanger tubes for heat removal and performance control. While there have been numerous studies on the phenomena in reactors with heat exchanger tubes, there is a lack of research on the effects of internals on performance and hydrodynamics. This review aims to provide a comprehensive overview and scientific basis for the design and development of heat exchanger tubes in these reactors.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2021)
Article
Energy & Fuels
M. Mubarak, A. Shaija, P. Prashanth
Summary: This study designed and fabricated a 20 L bubble column photobioreactor for the cultivation of Chlorella pyrenoidosa. The results showed that the experimental and theoretically predicted gas hold up and volumetric mass transfer coefficient had similar trends at different gas velocities. Comparatively, the biomass concentration and lipid content of C. pyrenoidosa cultivated in the bubble column photobioreactor were higher than those in conical flask and glass tank cultivation.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2023)
Review
Engineering, Chemical
Li-Tao Zhu, Xi-Zhong Chen, Ouyang Bo, Wei-Cheng Yan, He Lei, Zhe Chen, Zheng-Hong Luo
Summary: Artificial intelligence (AI), machine learning (ML), and data science are leading to a promising transformative paradigm. ML, especially deep learning and physics-informed ML, is a valuable toolkit that complements incomplete domain-specific knowledge in conventional experimental and computational methods. ML can provide flexible techniques to facilitate the conceptual development of new robust predictive models for multiphase flows and reactors by finding hidden pattern/information/mechanism in a data set.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Engineering, Environmental
Aritra Kar, Vaibhav Bahadur
Summary: This study develops a simulation framework based on fundamental principles to analyze the heat transfer, mass transfer, and interfacial phenomena associated with gas hydrate formation. By simulating CO2 hydrate formation and validating against experimental data, several important conclusions regarding hydrate formation are drawn, such as the adverse impact of inadequate heat dissipation, the importance of small bubble size for growth rates, and the enhancement of CO2 separation efficiency by increasing reactor pressure.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Le Sang, Qiang Cao, Bingqi Xie, Chi Ma, Jisong Zhang
Summary: The study evaluated the gas-liquid mass transfer performance in micropacked bed reactors using CO2-NaOH solution chemisorption, excluding the influence of mixing heads. The results showed that the effective interfacial area in mu PBRs is significantly larger compared to bubble reactors and trickle bed reactors, providing valuable insights for mass transfer enhancement in mu PBRs.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Engineering, Chemical
Sadra Mahmoudi, Farshid Hemmatian, Kaveh Padasht Dahkaee, Mark W. Hlawitschka, Apostolos Kantzas
Summary: This study investigates the influence of fluid type and bubble shape fluctuations on the drag coefficient, and evaluates the applicability of 12 drag coefficient estimation models. The results indicate that the Dijkhuizen et al. and Rodrigue correlations can effectively predict the terminal velocity of bubbles in different viscosity liquids.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2022)
Article
Engineering, Environmental
Sara Marchini, Markus Schubert, Uwe Hampel
Summary: The proposed study introduces a novel method for determining the axial gas dispersion coefficient in bubble columns using the gas flow modulation technique. The uncertainties and sensitivities related to this method are analyzed, along with the possibility of tailoring the modulation parameters to increase sensitivity and reduce uncertainty.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Bang Thanh Le, Son Ich Ngo, Young-Il Lim, Uen-Do Lee
Summary: A one-dimensional molten-metal-based bubble-column reactor (MMBCR) model coupled with heat transfer and axial dispersion was developed for non-oxidative CH4 py-rolysis to produce low-carbon H2. The model includes mass, momentum, and energy balances, as well as reaction kinetics and hydro-dynamic parameters. The experimental results show that the model agrees well with the data and can be used for designing industrial-scale reactors and optimizing operating conditions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Multidisciplinary Sciences
Rasool Pelalak, Ali Taghvaie Nakhjiri, Azam Marjani, Mashallah Rezakazemi, Saeed Shirazian
Summary: By using the adaptive neuro-fuzzy inference system (ANFIS) method to analyze gas-liquid flow, the study investigated the impact and complexity of different inputs on output parameters. The results showed that increasing the number of membership functions can improve model accuracy, X and Y computing nodes have similar impacts on gas fraction, while Z computing nodes have a uniform distribution of membership functions across the column.
SCIENTIFIC REPORTS
(2021)
Article
Engineering, Chemical
Shashank S. Tiwari, Eshita Pal, Shivkumar Bale, Nitin Minocha, Ashwin W. Patwardhan, Krishnaswamy Nandakumar, Jyeshtharaj B. Joshi
Article
Engineering, Environmental
Dinesh V. Kalaga, Manizheh Ansari, Damon E. Turney, Freddy Hernandez-Alvarado, Simon Kleinbart, K. E. ArunKumar, Jyeshtharaj B. Joshi, Sanjoy Banerjee, Masahiro Kawaji
CHEMICAL ENGINEERING JOURNAL
(2020)
Article
Engineering, Chemical
Shashank S. Tiwari, Eshita Pal, Shivkumar Bale, Nitin Minocha, Ashwin W. Patwardhan, Krishnaswamy Nandakumar, Jyeshtharaj B. Joshi
Article
Engineering, Chemical
Zakir Husain, Shashank S. Tiwari, Aniruddha B. Pandit, Jyeshtharaj B. Joshi
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2020)
Article
Chemistry, Analytical
Elizabeth Augustine, N. Desigan, N. K. Pandey, J. B. Joshi
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2020)
Article
Engineering, Chemical
Balamurugan Manavalan, Jyeshtharaj B. Joshi, Niranjan K. Pandey
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2020)
Article
Thermodynamics
Nitin Minocha, Jyeshtharaj B. Joshi
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2020)
Article
Chemistry, Physical
Shrilekha Sawant, Seemita Banerjee, Ashwin W. Patwardhan, Jyeshtharaj B. Joshi, Kinshuk Dasgupta
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2020)
Review
Engineering, Chemical
Dheeraj Minglani, Abhishek Sharma, Harsh Pandey, Ram Dayal, Jyeshtharaj B. Joshi, Shankar Subramaniam
Article
Engineering, Chemical
Deepa Thomas, Neetu A. Baveja, K. T. Shenoy, J. B. Joshi
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2020)
Article
Mechanics
Oladapo Ayeni, Shashank S. Tiwari, Chunliang Wu, Jyeshtharaj B. Joshi, Krishnaswamy Nandakumar
Article
Engineering, Chemical
Md Shakhaoath Khan, Ifsana Karim, Geoffrey M. Evans, Elham Doroodchi, Jyeshtharaj B. Joshi, Subhasish Mitra
Article
Chemistry, Multidisciplinary
Kartik S. Iyer, Hemant K. Balsora, Shubham D. Dixit, Abhishek Sharma, Prashant Sonar, William O. S. Doherty, Anand G. Chakinala, Jyeshtharaj B. Joshi
Article
Engineering, Chemical
Achyut Pakhare, Channamallikarjun Mathpati, Vishwanath H. Dalvi, Jyeshtharaj Joshi, Raosaheb Patil, Ekambara Kalekudithi
Summary: The crystal characteristics of ibuprofen are influenced by various design and operating parameters, such as impeller design, speed, seed size and quantity, and cooling profiles. Proper adjustment of these parameters can improve the flow properties and crystal size of ibuprofen, and closed clear impellers show better performance.
INDIAN CHEMICAL ENGINEER
(2022)
Article
Engineering, Chemical
Zakir Husain, Khursheed B. Ansari, Vikram S. Chatake, Yogesh Urunkar, Aniruddha B. Pandit, Jyeshtharaj B. Joshi
INDIAN CHEMICAL ENGINEER
(2020)