scholarly journals Standardization method for moleculer weight cut-off evalution of ultrafiltration membranes. III. Correction of measured retention of hollow fiber membrane using mass transfer coefficient.

MEMBRANE ◽  
1990 ◽  
Vol 15 (4) ◽  
pp. 203-209 ◽  
Author(s):  
Haruhiko OHYA ◽  
Hiroyuki YAMANAKA ◽  
Yutaka URAYAMA ◽  
Akihito HAIO ◽  
Youichi NEGISHI ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Transfer Coefficient ◽  
Mass Transfer Coefficient ◽  
Hollow Fiber ◽  
Hollow Fiber Membrane ◽  
Standardization Method ◽  
Fiber Membrane ◽  
Ultrafiltration Membranes

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.

Study on the Gas-Liquid Two-Phase Flow Two-Phase Flow Characteristics of Carbon Dioxide Removal by Membrane Method

2011 ◽  
Vol 347-353 ◽  
pp. 1797-1800
Author(s):  
Yan Chao Li ◽  
Zhi Wu Hao ◽  
Xian Ping Zeng ◽  
Fang Qin Li ◽  
Jian Xing Ren
Keyword(s):  
Mass Transfer ◽  
Transfer Coefficient ◽  
Mass Transfer Coefficient ◽  
Flue Gas ◽  
Total Mass ◽  
Hollow Fiber Membrane ◽  
Flue Gases ◽  
Fiber Membrane ◽  
Shell Side ◽  
Two Phase

In this paper, membrane absorption method was introduced. Analyzed and studied flue gases passing in the shell side (hollow fiber membrane) and in the pipe side (membrane lumen) respectively. Total mass transfer coefficient and de CO2 efficiency were calculated. For flue gases passing in the pipe side, total mass transfer coefficient was 1.1191×10-4m/s and de CO2 efficiency was 73.8%; while for flue gases passing in the shell side, total mass transfer coefficient was 3.4701×10-4m/s and de CO2 efficiency was 98.0%. The results showed that the flow of flue gas flowing in the lumen is better than the flow of flue gas flowing out of the hollow fiber membrane from the point of views of removal rate and mass transfer. To build de CO2 experimental devices, flow of flue gas flowing in the pipe side was proposed.

Sign in / Sign up

Export Citation Format

Share Document