Hydrogen transport through a membrane module based on a palladium foil

2013 ◽  
Vol 47 (6) ◽  
pp. 719-729 ◽  
Author(s):  
V. N. Babak ◽  
L. P. Didenko ◽  
S. E. Zakiev
Keyword(s):  
Membrane Module ◽  
Hydrogen Transport ◽  
Palladium Foil

Studying the Operation of a Membrane Module Based on Palladium Foil at High Temperatures

2018 ◽  
Vol 52 (2) ◽  
pp. 181-194 ◽  
Author(s):  
V. N. Babak ◽  
L. P. Didenko ◽  
Yu. P. Kvurt ◽  
L. A. Sementsova
Keyword(s):  
High Temperatures ◽  
Membrane Module ◽  
Palladium Foil

Numerical Simulation of Hydrogen Transport at a Crack Tip in a Pipeline Steel

2006 ◽  
Author(s):  
Mohsen Dadfarnia ◽  
Petros Sofronis ◽  
Ian Robertson ◽  
Brian P. Somerday ◽  
Govindarajan Muralidharan ◽  
...  
Keyword(s):  
Distribution System ◽  
Large Scale ◽  
Pipeline Steel ◽  
Rapid Assessment ◽  
Crack Tip ◽  
Hydrogen Transport ◽  
Natural Gas Pipeline ◽  
Central Production ◽  
Materials Used ◽  
Pressure Hydrogen

The technology of large scale hydrogen transmission from central production facilities to refueling stations and stationary power sites is at present undeveloped. Among the problems which confront the implementation of this technology is the deleterious effect of hydrogen on structural material properties, in particular at gas pressure of 1000 psi which is the desirable transmission pressure suggested by economic studies for efficient transport. In this paper, a hydrogen transport methodology for the calculation of hydrogen accumulation ahead of a crack tip in a pipeline steel is outlined. The approach accounts for stress-driven transient diffusion of hydrogen and trapping at microstructural defects whose density may evolve dynamically with deformation. The results are used to discuss a lifetime prediction methodology for failure of materials used for pipelines and welds exposed to high-pressure hydrogen. Development of such predictive capability and strategies is of paramount importance to the rapid assessment of using the natural-gas pipeline distribution system for hydrogen transport and of the susceptibility of new alloys tailored for use in the new hydrogen economy.

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.

scholarly journals STUDIES ON THE MECHANISM OF HYDROGEN TRANSPORT IN ANIMAL TISSUES

1942 ◽  
Vol 142 (2) ◽  
pp. 543-555 ◽  
Author(s):  
V.R. Potter ◽  
W.C. Schneider
Keyword(s):  
Hydrogen Transport ◽  
Animal Tissues

ChemInform Abstract: Electrochemical Membrane Technique for Studying Hydrogen Transport in Germanium

ChemInform ◽  
2009 ◽  
Vol 40 (15) ◽  
Author(s):  
P. P. Konorov ◽  
N. V. Rodionov ◽  
A. M. Yafyasov ◽  
V. B. Bozhevol'nov
Keyword(s):  
Hydrogen Transport ◽  
Membrane Technique

scholarly journals Investigation of a novel high-efficiency ion-permselective membrane module based on the electrochemically switched ion exchange scheme

RSC Advances ◽  
2021 ◽  
Vol 11 (35) ◽  
pp. 21248-21258
Author(s):  
Di Zhang ◽  
Pengle Zhang ◽  
Du Xiao ◽  
Xiaogang Hao
Keyword(s):  
Ion Exchange ◽  
High Efficiency ◽  
Membrane Module ◽  
Permselective Membrane ◽  
Membrane Modules

Novel ion permselective membrane modules based on the ESIX scheme.

Use of a membrane module for semi-direct air evaporative cooling

2019 ◽  
Vol 29 (10) ◽  
pp. 1346-1358 ◽  
Author(s):  
Sebastian Englart
Keyword(s):  
Moisture Content ◽  
Relative Error ◽  
Air Temperature ◽  
Evaporative Cooling ◽  
Cross Flow ◽  
Membrane Module ◽  
Transfer Model ◽  
Air Cooling ◽  
Heating Efficiency ◽  
Circulating Water

This study discusses the use of a membrane module for semi-direct evaporative air cooling. A cross-flow membrane module was used to carry out this air treatment process. For such a flow, it was proposed to describe and solve the heat and mass transfer model as a one-dimensional problem. The mathematical model was used to determine the moisture content and air temperature at the outlet from the module and the temperature of the circulating water. Results obtained using the proposed model are in good agreement with the experimental data. The relative error for the air temperature at the module outlet did not exceed 0.5%. For the moisture content, the relative error did not exceed 4%. For the circulating water temperature, the relative error did not exceed 0.6%. This paper also discusses the heating efficiency of the evaporative cooling process. Methods for determining the unit cooling indicator and the energy efficiency ratio are also proposed.

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