Hydrogen Permeation Performance of Ni-BaZr0.1Ce0.7Y0.2O3−δ Metal-Ceramic Hollow Fiber Membrane

2012 ◽  
Vol 25 (2) ◽  
pp. 125-128 ◽  
Author(s):  
Chun-li Yang ◽  
Qi-ming Xu ◽  
Zhi-wen Zhu ◽  
Wei Liu
Keyword(s):  
Hollow Fiber ◽  
Hydrogen Permeation ◽  
Hollow Fiber Membrane ◽  
Fiber Membrane ◽  
Metal Ceramic

A CO2-stable hollow-fiber membrane with high hydrogen permeation flux

AIChE Journal ◽  
2015 ◽  
Vol 61 (6) ◽  
pp. 1997-2007 ◽  
Author(s):  
Yan Chen ◽  
Qing Liao ◽  
Zhong Li ◽  
Haihui Wang ◽  
Yanying Wei ◽  
...  
Keyword(s):  
Hollow Fiber ◽  
Hydrogen Permeation ◽  
Hollow Fiber Membrane ◽  
Permeation Flux ◽  
Fiber Membrane ◽  
High Hydrogen

scholarly journals One-Step Thermal Processing of BaCe0.8Y0.2O3-δ Hydrogen Permeable Multi-Channel Hollow Fiber Membrane

2021 ◽  
Author(s):  
Tianlei Wang ◽  
Zheng Fan ◽  
Shoufei Wang ◽  
Qiankun Zheng ◽  
Jinkun Tan ◽  
...  
Keyword(s):  
Hollow Fiber ◽  
Thermal Processing ◽  
Hydrogen Permeation ◽  
Sintering Temperature ◽  
Hollow Fiber Membrane ◽  
Fiber Membrane ◽  
Barium Cerate ◽  
Long Term Stability ◽  
Fiber Fabrication ◽  
One Step

Yttrium-doped barium cerate (BaCeYO, BCY) is the most widely studied proton conducting material and is frequently fabricated as dense membranes for hydrogen separation. However, the difficulty to prepare dense BCY membranes is the extremely high sintering temperature, normally higher than 1500 oC. Herein, the BCY 7-channel hollow fiber membrane was prepared by one-step thermal processing (OSTP). It proved that adding CoO as sintering aid is beneficial to the densification and 1wt% CoO was the optimum addition to form a homogeneous phase structure. The dense sintering temperature was greatly reduced from over 1500 to 1350 C. The hydrogen permeation flux of the BCY hollow fiber membrane reached up to 0.34 ml mincm at 900 C. The long-term stability test last for 300 h. The properties of OSTP samples were demonstrated to be essentially higher than samples made by conventional ceramic hollow fiber fabrication methods.

Simulation of Oxygen Permeability of Dual-phase Hollow Fiber Membrane

2012 ◽  
Vol 27 (9) ◽  
pp. 951-955
Author(s):  
Chun-Li YANG ◽  
Qi-Ming XU ◽  
Ming GONG ◽  
Wei LIU
Keyword(s):  
Hollow Fiber ◽  
Oxygen Permeability ◽  
Hollow Fiber Membrane ◽  
Dual Phase ◽  
Fiber Membrane

scholarly journals Kinetic Analysis of Lidocaine Elimination by Pig Liver Cells Cultured in 3D Multi-Compartment Hollow Fiber Membrane Network Perfusion Bioreactors

2021 ◽  
Vol 8 (8) ◽  
pp. 104
Author(s):  
Gerardo Catapano ◽  
Juliane K. Unger ◽  
Elisabetta M. Zanetti ◽  
Gionata Fragomeni ◽  
Jörg C. Gerlach
Keyword(s):  
Kinetic Analysis ◽  
Drug Screening ◽  
Hollow Fiber ◽  
Hollow Fiber Membrane ◽  
Liver Cells ◽  
Fiber Membrane ◽  
Bioreactor Design ◽  
Drug Adsorption ◽  
And Performance ◽  
Cells Cultured

Liver cells cultured in 3D bioreactors is an interesting option for temporary extracorporeal liver support in the treatment of acute liver failure and for animal models for preclinical drug screening. Bioreactor capacity to eliminate drugs is generally used for assessing cell metabolic competence in different bioreactors or to scale-up bioreactor design and performance for clinical or preclinical applications. However, drug adsorption and physical transport often disguise the intrinsic drug biotransformation kinetics and cell metabolic state. In this study, we characterized the intrinsic kinetics of lidocaine elimination and adsorption by porcine liver cells cultured in 3D four-compartment hollow fiber membrane network perfusion bioreactors. Models of lidocaine transport and biotransformation were used to extract intrinsic kinetic information from response to lidocaine bolus of bioreactor versus adhesion cultures. Different from 2D adhesion cultures, cells in the bioreactors are organized in liver-like aggregates. Adsorption on bioreactor constituents significantly affected lidocaine elimination and was effectively accounted for in kinetic analysis. Lidocaine elimination and cellular monoethylglicinexylidide biotransformation featured first-order kinetics with near-to-in vivo cell-specific capacity that was retained for times suitable for clinical assist and drug screening. Different from 2D cultures, cells in the 3D bioreactors challenged with lidocaine were exposed to close-to-physiological lidocaine and monoethylglicinexylidide concentration profiles. Kinetic analysis suggests bioreactor technology feasibility for preclinical drug screening and patient assist and that drug adsorption should be accounted for to assess cell state in different cultures and when laboratory bioreactor design and performance is scaled-up to clinical use or toxicological drug screening.

scholarly journals Development of mass and heat transfer coupled model of hollow fiber membrane for salt recovery from brine via osmotic membrane distillation

2021 ◽  
Vol 33 (1) ◽  
Author(s):  
Sher Ahmad ◽  
Gabriela Vollet Marson ◽  
Waheed Ur Rehman ◽  
Mohammad Younas ◽  
Sarah Farrukh ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Transfer Coefficient ◽  
Mass Transfer Coefficient ◽  
Heat And Mass Transfer ◽  
Hollow Fiber ◽  
Hollow Fiber Membrane ◽  
Membrane Distillation ◽  
Fiber Membrane ◽  
Salt Recovery ◽  
Osmotic Solution

Abstract Background In this research work, a coupled heat and mass transfer model was developed for salt recovery from concentrated brine water through an osmotic membrane distillation (OMD) process in a hollow fiber membrane contactor (HFMC).The model was built based on the resistance-in-series concept for water transport across the hydrophobic membrane. The model was adopted to incorporate the effects of polarization layers such as temperature and concentration polarization, as well as viscosity changes during concentration. Results The modeling equations were numerically simulated in MATLAB® and were successfully validated with experimental data from literature with a deviation within the range of 1–5%. The model was then applied to study the effects of key process parameters like feed concentrations, osmotic solution concentration, feed, and osmotic solution flow rates and feed temperature on the overall heat and mass transfer coefficient as well as on water transport flux to improve the process efficiency. The mass balance modeling was applied to calculate the membrane area based on the simulated mass transfer coefficient. Finally, a scale-up for the MD process for salt recovery on an industrial scale was proposed. Conclusions This study highlights the effect of key parameters for salt recovery from wastewater using the membrane distillation process. Further, the applicability of the OMD process for salt recovery on large scale was investigated. Sensitivity analysis was performed to identify the key parameters. From the results of this study, it is concluded that the OMD process can be promising in salt recovery from wastewater.

Sign in / Sign up

Export Citation Format

Share Document