Mathematical Modeling of the Radial Crossflow Hollow Fiber Membrane Module for Multi-Component Gas Separation

2014 ◽  
Vol 625 ◽  
pp. 726-729 ◽  
Author(s):  
Serene Sow Mun Lock ◽  
Kok Keong Lau ◽  
Mohd Shariff Azmi
Keyword(s):  
Mathematical Model ◽  
Gas Separation ◽  
Hollow Fiber ◽  
Membrane Separation ◽  
Hollow Fiber Membrane ◽  
Membrane Module ◽  
Separation Performance ◽  
Fiber Membrane ◽  
Cell Balance ◽  
The Ideal

A “Multi-component Progressive Cell Balance” approach has been applied to characterize the gas separation of the radial crossflow hollow fiber membrane module. The mathematical model is an indispensable tool to evaluate the separation performance of membrane material towards different components. The approach is required to be implemented since there is scarcely available mathematical model to characterize the two dimensional radial crossflow. In addition, the currently available mathematical model is confined to the ideal binary system, which constraints its applicability in real membrane separation process with many components. The significance of the developed multi-component mathematical model as compared to the model adapting the ideal binary simulation condition is demonstrated in this study.

Mathematical Modeling of Natural Gas Separation Using Hollow Fiber Membrane Modules by Application of Finite Element Method through Statistical Analysis

2016 ◽  
Vol 11 (1) ◽  
pp. 11-15 ◽  
Author(s):  
Javad Aminian Dehkordi ◽  
Seyed Saeid Hosseini ◽  
Prodip K. Kundu ◽  
Nicolas R. Tan
Keyword(s):  
Mathematical Model ◽  
Natural Gas ◽  
Gas Separation ◽  
Mole Fraction ◽  
Hollow Fiber ◽  
Fiber Length ◽  
Hollow Fiber Membrane ◽  
Fiber Membrane ◽  
Active Fiber ◽  
Membrane Modules

Abstract Hollow fiber membrane permeators used in the separation industry are proven as preferred modules representing various benefits and advantages to gas separation processes. In the present study, a mathematical model is proposed to predict the separation performance of natural gas using hollow fiber membrane modules. The model is used to perform sensitivity analysis to distinguish which process parameters influence the most and are necessary to be assessed appropriately. In this model, SRK equation was used to justify the nonideal behavior of gas mixtures and Joule-Thomson equation was employed to take into account the changes in the temperature due to permeation. Also, the changes in temperature along shell side was calculated via thermodynamic principles. In the proposed mathematical model, the temperature dependence of membrane permeance is justified by the Arrhenius-type equation. Furthermore, a surface mole fraction parameter is introduced to consider the effect of accumulation of less permeable component adjacent to the membrane surface in the feed side. The model is validated using experimental data. Central Composite Designs are used to gain response surface model. For this, fiber inner diameter, active fiber length, module diameter and number of fibers in the module are taken as the input variables related to the physical geometries. Results show that the number as well as the length of the fibers have the most influence on the membrane performance. The maximum mole fraction of CO2 in the permeate stream is observed for low number of fibers and fibers having smaller active lengths. Also results indicate that at constant active fiber length, increasing the number of fibers decreases the permeate mole fraction of CO2. The findings demonstrate the importance of considering appropriate physical geometries for designing hollow fiber membrane permeators for practical gas separation applications.

Effect of MIL-53 on phase inversion and gas separation performance of mixed matrix hollow fiber membranes

RSC Advances ◽  
2016 ◽  
Vol 6 (73) ◽  
pp. 69124-69134 ◽  
Author(s):  
Haitao Zhu ◽  
Xingming Jie ◽  
Lina Wang ◽  
Guodong Kang ◽  
Dandan Liu ◽  
...  
Keyword(s):  
Solvent Effect ◽  
Gas Separation ◽  
Hollow Fiber ◽  
Membrane Structure ◽  
Phase Inversion ◽  
Hollow Fiber Membrane ◽  
Separation Performance ◽  
Fiber Membrane ◽  
Mixed Matrix ◽  
Gas Separation Performance

The MIL-53 non-solvent effect influenced the phase inversion of spinning dope, and the MOF-containing hollow fiber membrane structure was optimized.

scholarly journals Fabrication of Functionalized MOFs Incorporated Mixed Matrix Hollow Fiber Membrane for Gas Separation

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Haitao Zhu ◽  
Xingming Jie ◽  
Yiming Cao
Keyword(s):  
Gas Separation ◽  
Polymer Matrix ◽  
Hollow Fiber ◽  
Hollow Fiber Membrane ◽  
Metal Organic Framework ◽  
Separation Performance ◽  
Fluid Composition ◽  
Solvent Ratio ◽  
Fiber Membrane ◽  
Mixed Matrix

The metal-organic framework (MOFs) of MIL-53 was functionalized by aminosilane grafting and then incorporated into Ultem®1000 polymer matrix to fabricate mixed matrix hollow fiber membrane (MMHFM) with high separation performance. SEM, XRD, and TGA were performed to characterize the functionalized MIL-53 and prepared MMHFM. The filler particles were embedded in membrane successfully and dispersed well in the polymer matrix. The incorporation of MOFs endowed MMHFM better thermal stability. Moreover, effects of solvent ratio in spinning dope, spinning condition, and testing temperature on gas separation performance of MMHFM were investigated. By optimizing dope composition, air gap distance, and bore fluid composition, MMHFM containing functionalized MIL-53 achieved excellent gas permeance and CO2/N2selectivity. The CO2permeance increased from 12.2 GPU for pure Ultem HFM to 30.9 GPU and the ideal CO2/N2selectivity was enhanced from 25.4 to 34.7 simultaneously. Additionally, gas permeance increased but the selectivity decreased with the temperature increase, which followed the solution-diffusion based transport mechanism.

scholarly journals A novel method for processing adipose-derived stromal stem cells using a closed cell washing concentration device with a hollow fiber membrane module

2021 ◽  
Vol 23 (1) ◽  
Author(s):  
Shinji Hayashi ◽  
Rieko Yagi ◽  
Shuhei Taniguchi ◽  
Masami Uji ◽  
Hidaka Urano ◽  
...  
Keyword(s):  
Stem Cells ◽  
Hollow Fiber ◽  
Hollow Fiber Membrane ◽  
Membrane Module ◽  
Fiber Membrane ◽  
Cell Processing ◽  
Closed Cell ◽  
A Cell ◽  
Novel Method ◽  
Stromal Stem Cells

AbstractCell-assisted lipotransfer (CAL) is an advanced lipoinjection method that uses autologous lipotransfer with addition of a stromal vascular fraction (SVF) containing adipose-derived stromal stem cells (ASCs). The CAL procedure of manual isolation of cells from fat requires cell processing to be performed in clean environment. To isolate cells from fat without the need for a cell processing center, such as in a procedure in an operation theater, we developed a novel method for processing SVF using a closed cell washing concentration device (CCD) with a hollow fiber membrane module. The CCD consists of a sterilized closed circuit, bags and hollow fiber, semi-automatic device and the device allows removal of >99.97% of collagenase from SVF while maintaining sterility. The number of nucleated cells, ASCs and viability in SVF processed by this method were equivalent to those in SVF processed using conventional manual isolation. Our results suggest that the CCD system is as reliable as manual isolation and may also be useful for CAL. This approach will help in the development of regenerative medicine at clinics without a cell processing center.

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