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Torabi H, Javi F, Deisenroth TW, Pho TV, Barbright V, Abbaspourrad A. Mechanism and kinetics of enzymatic degradation of polyester microparticles using a shrinking particle-shrinking core model. LAB ON A CHIP 2023; 23:4456-4465. [PMID: 37740368 DOI: 10.1039/d3lc00581j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/24/2023]
Abstract
Generalized shrinking particle (SPM) and shrinking core (SCM) models were developed to the kinetics of heterogenous enzymatic degradation of polymer microparticles in a continuous microflow system. This enzymatic degradation was performed in a microfluidic device designed to both physically separate and immobilize the microparticles. Then time-resolved measurements were made using image processing of the physical changes of the particles during degradation. The kinetics of enzyme-polymer intermediate formation, enzymatic bond cleavage, and enzyme diffusion through the layer of degraded substrate (SCM only) were mathematically derived to predict the time-resolved degradation of the substrate. The proposed models were tested against the degradation of 15-25 μm particles of polycaprolactone (PCL) and poly (butylene adipate-co-terephthalate) (PBAT) by cutinase enzyme from Humicola insolens. Degradation of PCL microparticles followed the SPM model and its kinetics were found to be zero-order, while the SCM model applied to PBAT microparticles showed first-order kinetics. Further, the degradation of polybutylene succinate (PBS), and poly butylene-sebacate-co-terephthalate (PBSeT) microparticles demonstrated wide applicability of the method. The use of image processing simplifies the required analysis by eliminating the need to remove aliquots or concentrate effluent for additional analytical characterization.
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Affiliation(s)
- Hooman Torabi
- Department of Food Science, College of Agriculture & Life Sciences, Cornell University, Stocking Hall, Ithaca, New York, 14853, USA.
| | - Farhad Javi
- Department of Food Science, College of Agriculture & Life Sciences, Cornell University, Stocking Hall, Ithaca, New York, 14853, USA.
| | - Ted W Deisenroth
- BASF Corporation, 500 White Plains Road, Tarrytown, New York 10591, USA
| | - Toan V Pho
- BASF Corporation, 500 White Plains Road, Tarrytown, New York 10591, USA
| | | | - Alireza Abbaspourrad
- Department of Food Science, College of Agriculture & Life Sciences, Cornell University, Stocking Hall, Ithaca, New York, 14853, USA.
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Kamolov A, Turakulov Z, Rejabov S, Díaz-Sainz G, Gómez-Coma L, Norkobilov A, Fallanza M, Irabien A. Decarbonization of Power and Industrial Sectors: The Role of Membrane Processes. MEMBRANES 2023; 13:130. [PMID: 36837633 PMCID: PMC9964316 DOI: 10.3390/membranes13020130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 01/11/2023] [Accepted: 01/17/2023] [Indexed: 06/18/2023]
Abstract
Carbon dioxide (CO2) is the single largest contributor to climate change due to its increased emissions since global industrialization began. Carbon Capture, Storage, and Utilization (CCSU) is regarded as a promising strategy to mitigate climate change, reducing the atmospheric concentration of CO2 from power and industrial activities. Post-combustion carbon capture (PCC) is necessary to implement CCSU into existing facilities without changing the combustion block. In this study, the recent research on various PCC technologies is discussed, along with the membrane technology for PCC, emphasizing the different types of membranes and their gas separation performances. Additionally, an overall comparison of membrane separation technology with respect to other PCC methods is implemented based on six different key parameters-CO2 purity and recovery, technological maturity, scalability, environmental concerns, and capital and operational expenditures. In general, membrane separation is found to be the most competitive technique in conventional absorption as long as the highly-performed membrane materials and the technology itself reach the full commercialization stage. Recent updates on the main characteristics of different flue gas streams and the Technology Readiness Levels (TRL) of each PCC technology are also provided with a brief discussion of their latest progresses.
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Affiliation(s)
- Azizbek Kamolov
- Department of IT, Automation, and Control, Tashkent Chemical-Technological Institute, Tashkent 100011, Uzbekistan
- Department of Chemical and Biomolecular Engineering, University of Cantabria, 39005 Santander, Spain
| | - Zafar Turakulov
- Department of IT, Automation, and Control, Tashkent Chemical-Technological Institute, Tashkent 100011, Uzbekistan
- Department of Chemical and Biomolecular Engineering, University of Cantabria, 39005 Santander, Spain
| | - Sarvar Rejabov
- Department of IT, Automation, and Control, Tashkent Chemical-Technological Institute, Tashkent 100011, Uzbekistan
| | - Guillermo Díaz-Sainz
- Department of Chemical and Biomolecular Engineering, University of Cantabria, 39005 Santander, Spain
| | - Lucia Gómez-Coma
- Department of Chemical and Biomolecular Engineering, University of Cantabria, 39005 Santander, Spain
| | - Adham Norkobilov
- Department of IT, Automation, and Control, Tashkent Chemical-Technological Institute, Tashkent 100011, Uzbekistan
- Department of Engineering Technologies, Shahrisabz Branch of Tashkent Chemical-Technological Institute, Shahrisabz 181306, Uzbekistan
| | - Marcos Fallanza
- Department of Chemical and Biomolecular Engineering, University of Cantabria, 39005 Santander, Spain
| | - Angel Irabien
- Department of Chemical and Biomolecular Engineering, University of Cantabria, 39005 Santander, Spain
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Limestone Calcination Kinetics in Microfluidized Bed Thermogravimetric Analysis (MFB-TGA) for Calcium Looping. Catalysts 2022. [DOI: 10.3390/catal12121661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Limestone calcination is an important part of calcium looping (CaL) technology and is critical to the design and operation optimization of fluidized bed reactors. However, obtaining a method of measuring the fast calcination kinetics in a fluidizing environment with isothermal conditions is still a challenge in the field of calcium looping. We address this challenge in this work and develop a new method of obtaining limestone calcination kinetics by injecting limestone particles into the hot fluidizing sands in a microfluidized bed thermogravimetric analysis (MFB-TGA) with a mass measurement resolution of 1 mg. The calcination characteristics of limestone are investigated at different particle sizes (150–1250 μm), temperatures (750–920 °C), and CO2 concentrations (0–30 vol.%). The experimental data measured from MFB-TGA were analyzed using a detailed model including surface reaction and intraparticle and external diffusion. The results show that the kinetics of limestone calcination measured by MFB-TGA are faster than those measured via regular TGA. This particle-injecting method of MFB-TGA provides a new experimental idea for measuring fast calcination kinetics occurring inside fluidized bed reactors and provides guidance on the application of CaL technology.
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