Article
Engineering, Chemical
Peyman Pakzad, Masoud Mofarahi, Chang-Ha Lee
Summary: A rate-based model was developed for post-combustion CO2 capture in an absorption column packed with Sulzer DX, using a new amine solution DEAB. Sensitivity analysis on mass-transfer coefficients and effective interfacial area was conducted to enhance absorber performance. Results showed significant impact of CO2 loading, temperature, and liquid flow rate on the reaction rate.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Energy & Fuels
Hyun-Taek Oh, Jae-Cheol Lee, Chang-Ha Lee
Summary: This study investigates the efficiency and inside profile of a packed-column CO2 absorption process using a novel multi-amine solvent. The results show that the process using DETA solvent has lower energy consumption compared to MEA, while the process using AEEA requires higher energy. Selecting the right multi-amine solvent has the potential to significantly improve the energy efficiency of CO2 capture.
Article
Engineering, Environmental
Hannaneh Rasouli, Ion Iliuta, Francis Bougie, Alain Garnier, Maria C. Iliuta
Summary: A novel enzymatic process using immobilized enzyme and magnetic nanoparticles in a packed-bed column bioreactor has been proposed to enhance CO2 absorption performance. The results demonstrated that the immobilized enzyme on the packing surface and magnetic nanoparticles exhibited high storage stability and could overcome the diffusion limitation of the enzyme on the packing surface. Overall, this technology design shows great potential for application.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Energy & Fuels
Tohid N.Borhani, Shervan Babamohammadi, Navid Khallaghi, Zhein Zhang
Summary: A rate-based non-equilibrium model was developed for CO2 absorption using a mixture of piperazine and potassium carbonate solution, incorporating mass and heat transfer processes between liquid and gas phases. The model considers physical equilibrium at the gas-liquid interface and chemical equilibrium in the liquid phase, with the mass transfer coefficient corrected by an enhancement factor to reflect chemical reactions. The model showed good agreement with experimental data and similar studies in the literature.
Article
Engineering, Chemical
Hong Quan, Chunliang Shang, Liju Bai, Zihan Fan, Yufan Dong, Shoulong Dong, Stefania Moioli, Miyi Li, Paitoon Tontiwachwuthikul, Helei Liu
Summary: Mass transfer performance is crucial in evaluating solvents and designing and scaling up CO2 absorption processes. This study investigated the mass transfer process of CO2 absorption into blended DEEA-HMDA solution using a lab-scale absorption column packed with Sulzer DX structured packing under different operating conditions. The impact of these operating parameters on KGav was thoroughly analyzed and discussed. Additionally, the mass transfer mechanism of CO2 absorption into blended DEEA-HMDA solution was comprehensively explained, providing operational guidelines. Moreover, a new KGav model was developed based on observed experimental values, which outperformed the empirical Kohl-Risenfield-Astarita and Sheng models in terms of AAD prediction.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Mahsa Amirkhosrow, Jose-Francisco Perez-Calvo, Matteo Gazzani, Marco Mazzotti, Ebrahim Nemati Lay
Summary: By improving the rate-based modeling with different kinetic models and mass transfer correlations, accurate predictions of CO(2) capture performance and temperature/composition profiles in liquid and gas phases have been achieved.
SEPARATION SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Environmental
Lei Xing, Hai Jiang, Shuo Wang, Valerie J. Pinfield, Jin Xuan
Summary: Enhanced weathering of minerals can capture atmospheric CO2 and store it as bicarbonate and carbonate in the ocean. This process requires engineered reactors that optimize reaction conditions to maximize CO2 capture rate and minimize energy and water consumption. Trickle beds and packed bubble columns are chosen as typical reactors to perform CO2 capture through enhanced weathering.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Jonathan Boualavong, Christopher A. Gorski
Summary: Electrochemical CO2 capture methods have attracted attention for their low energy demands, but combining electrochemical and CO2 mass-transfer reactor units may increase process time. In contrast, optimizing solution chemistry can improve both energy demands and process time simultaneously.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Thermodynamics
Kun Fu, Mingzhen Zheng, Dong Fu
Summary: The results of beaker experiments showed that the water-lean EHA + diglyme absorbent has advantages over the commercial MEA absorbent in terms of CO2 absorption and desorption characteristics. A pilot packed tower was set up to test the capture efficiency and mass transfer performance of the water-lean EHA + diglyme absorbent for low partial pressure CO2. The results demonstrated the transition from water-free absorption to water-lean absorption and provided basic data for the design of CO2 capture processes.
Article
Engineering, Chemical
Cheng-Hsiu Yu, Yu-Jeng Lin, David Shan-Hill Wong, Chau-Chyun Chen
Summary: This study presents a first-principle process simulation model for the chemical absorption of CO2 with MEA aqueous solutions using RPB. The model accurately simulates the phase and chemical equilibria, the heat and mass transfer, the reactions between MEA and CO2, and the RPB hydraulics. The reaction rate constant is found to be the controlling step with the greatest potential to enhance CO2 absorption performance in RPB.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Engineering, Environmental
Stefano E. Zanco, Matteo Ambrosetti, Gianpiero Groppi, Enrico Tronconi, Marco Mazzotti
Summary: Experimental and modeling analysis shows that using packed open-cell foams as an alternative to standard packed bed configuration can achieve faster temperature transitions and reduce temperature gradients within the adsorption bed. Even though there is a loss of sorbent inventory with the presence of foam, higher process productivity is achieved due to faster temperature swings and more homogeneous temperature distribution within the adsorption columns.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
J. Arturo Mendoza-Nieto, Hector Martinez-Hernandez, Heriberto Pfeiffer, J. Francisco Gomez-Garcia
Summary: This work presents a kinetic study of CO2 capture on Na2ZrO3 as a function of temperature and CO2 flow rate. A new kinetic model is proposed and discussed, which considers the formation of a Na2CO3-ZrO2 layer and the enhancement of the capture process by Na+ ions diffusion. The results show that the CO2 capture efficiency is improved as the CO2 flow rate increases. The activated state energy for surface capture and bulk capture are calculated using the Eyring model. The study also discusses the impact of CO2 sorption desorption process at low temperature and flow rate on high-temperature CO2 capture.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Green & Sustainable Science & Technology
David Cann, Carolina Font-Palma, Paul Willson
Summary: This study examines the feasibility of a novel cryogenic carbon capture method, where CO2 is deposited as frost onto a cold moving bed to continuously remove CO2. Experimental results show that frost front velocities range from 0.4 to 1 mm/s, enabling the design of a moving bed system for continuous capture. Conducted experiments demonstrate successful cryogenic carbon capture under moving bed conditions without frost accumulation.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2021)
Article
Thermodynamics
Ahad Ghaemi, Alireza Hemmati
Summary: A novel correlation for calculating gas-phase mass transfer coefficient was developed based on theoretical investigation and experimental data, with an acceptable error rate of 7.47% when validated. Results showed that increasing holdup and Schmidt number enhanced the mass transfer coefficient at different temperatures and concentrations. Higher temperatures were found to result in higher gas-phase holdup in the absorption column.
HEAT AND MASS TRANSFER
(2021)
Article
Materials Science, Ceramics
Hongming Fu, Kaili Xue, Jihao Yang, Zhaohao Li, Heng Zhang, Dan Gao, Haiping Chen
Summary: In this study, Al2O3 ceramic membrane was modified to be hydrophobic by grafting 1H, 1H, 2H, 2H-per-fluorodecyltriethoxysilane, and its properties were characterized in detail. The CO2 capture performance of the modified ceramic membrane was investigated through experiments. Results showed that the wetting resistance of the modified membrane was significantly improved, and the contact angle increased from 49.8 to 130.9 degrees. With the use of ethanolamine (MEA) as an absorbent, the CO2 mass transfer rate and capture efficiency using the modified hydrophobic ceramic membrane were greatly increased compared to the original membrane. After 72 hours of immersion in MEA solution, the quality and pore size of the ceramic membrane did not show significant changes. This study provides valuable insights for the industrial application of gas-liquid membrane contactors with ceramic membranes for CO2 capture.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Computer Science, Interdisciplinary Applications
Mohammad Amin Makarem, Masoud Mofarahi, Benyamin Jafarian, Chang-Ha Lee
COMPUTERS & CHEMICAL ENGINEERING
(2019)
Article
Thermodynamics
Morteza Afkhamipour, Masoud Mofarahi, Peyman Pakzad, Chang-Ha Lee
FLUID PHASE EQUILIBRIA
(2019)
Article
Energy & Fuels
Morteza Afkhamipour, Masoud Mofarahi, Atefeh Rezaei, Rahele Mahmoodi, Chang-Ha Lee
Article
Energy & Fuels
Peyman Pakzad, Masoud Mofarahi, Amir Abbas Izadpanah, Morteza Afkhamipour
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
(2020)
Article
Chemistry, Multidisciplinary
Peymaneh Dehghan, Mohsen Abbasi, Masoud Mofarahi, Ahmad Azari
Summary: The study found that increasing the initial concentration of KHI in wastewater can significantly enhance the removal efficiency, and increasing the pH and adsorbent dosage also contribute to higher removal rates. The highest KHI removal was achieved at 68.75% and 22.8% at initial concentrations of 50 and 250 mg/L, respectively.
SEPARATION SCIENCE AND TECHNOLOGY
(2021)
Article
Thermodynamics
Atefeh Rezaei, Peyman Pakzad, Masoud Mofarahi, Amir Abbas Izadpanah, Morteza Afkhamipour, Chang-Ha Lee
Summary: The densities and viscosities of three solutions were measured and various volumetric and viscometric characteristics were calculated to explain the experimental results. The properties were analyzed through intermolecular interactions and molecular structures to determine the viscous flows of the solutions. The obtained thermodynamic properties can be utilized in the design and optimization of a CO2-capture process.
JOURNAL OF CHEMICAL AND ENGINEERING DATA
(2021)
Article
Engineering, Chemical
Kwang-Jun Ko, Seongmin Jin, Haeryeong Lee, Kyung-Min Kim, Masoud Mofarahi, Chang-Ha Lee
Summary: Resin-based activated carbon beads with KOH activation were studied for CO2 adsorption and separation, revealing the significant impact of ultra-micropores on CO2 adsorption capacity. Excessive ultra-micropores may reduce CO2 adsorption rate, highlighting the need for careful control of ultra-micropores for efficient separation.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Energy & Fuels
Khayyam Mehrabi, Ali Bakhtyari, Masoud Mofarahi, Chang-Ha Lee
Summary: This study develops a simple and accurate density calculation model for amino acid salt solutions (AASs) and evaluates it using artificial neural networks (ANNs). The results show that the developed correlation has excellent performance in predicting the densities of AASs, and ANNs can accurately calculate the densities.
Article
Thermodynamics
Meisam Ansarpour, Navid Aslfattahi, Masoud Mofarahi, R. Saidur
Summary: This study investigates the heat transfer performance of [MMI] [DMP] ionic liquid solution in the presence of Mxene nanoparticle. The results show that increasing the Reynolds number and nanofluid concentration increases the heat transfer coefficient, while the Nusselt number decreases. The maximum heat transfer enhancement occurs at 0.2 mass% INf, Reynolds number 50, and fluid inlet temperature 308.15 K.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Energy & Fuels
Ali Bakhtyari, Masoud Mofarahi, Chang-Ha Lee
Summary: This study aimed to develop advanced processes for producing dimethyl ether (DME) from biomass-driven feedstocks by optimizing the feed shift strategy for methanol dehydration. The results showed that using a non-adiabatic reactor with a specific catalyst can achieve higher DME yields under certain conditions, but the system design is more complex.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2022)
Article
Engineering, Environmental
Hyokyung Kim, Kwang-Jun Ko, Masoud Mofarahi, Kyung-Min Kim, Chang-Ha Lee
Summary: This study elucidates the adsorption characteristics of low-concentration tetrahydrothiophene (THT) and tert-butyl mercaptan (TBM) in CH4 on Cu-impregnated activated carbon (Cu/AC). THT removal is dominated by physical adsorption, allowing facile regeneration by N2 thermal treatment. TBM removal is primarily carried out by chemical adsorption utilizing CuO, Cu2O, and oxygen on the AC.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Peymaneh Dehghan, Fatemeh Keramat, Masoud Mofarahi, Chang-Ha Lee
Summary: This study investigates the effects of an inclined step combined with different types of obstacles on the heat transfer of graphene oxide nanofluid inside a double backward-facing microchannel. The simulation results show that placing a triangular obstacle at the top of the first step significantly increases the Nusselt number and heat transfer coefficient compared to pure water. High pressure drop improves heat transfer, and the friction factor is influenced by the presence and location of triangular obstacles.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Article
Engineering, Multidisciplinary
Ali Bakhtyari, Ali Rasoolzadeh, Khayyam Mehrabi, Masoud Mofarahi, Chang -Ha Lee
Summary: This study developed simple and precise methods for modeling the viscosity of natural amino acid salt solutions (NAASs) using empirical correlations and artificial intelligence approaches. The results showed that the modified global equation had the best accuracy with a deviation of 2.28%, while the artificial neural networks (ANNs) achieved errors of 2.82%, 1.82%, and 0.47% using different algorithms.
RESULTS IN ENGINEERING
(2023)
Article
Chemistry, Physical
Ali Bakhtyari, Khayyam Mehrabi, Ali Rasoolzadeh, Masoud Mofarahi, Chang -Ha Lee
Summary: This study aims to develop a generalized theoretical model derived from free-volume theory (FVT) for estimating the viscosity of NAASs. The results demonstrated that the FVT is capable of modeling the viscosities of NAASs and can thus be employed for the simulation and optimization of thermophysical properties.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Multidisciplinary Sciences
Ali Bakhtyari, Masoud Mofarahi
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2019)