The hypothesis of this research was that by stretching microfiltration or ultrafiltration membranes, their performance, in terms of flux and rejection, could be improved. Stretching a membrane was envisioned to stretch its pores, or change the aspect ration of the pores. It was thought that changing the aspect ratio could lead to improved flux (by increasing the pore area) while also improving the rejection of particles (by decreasing the length of the minor axis). The objective of this research was to study the effects of uniaxial stretching of microporous membranes (and thereby change the aspect ratio) on their performance (measured in terms of flux and particle rejection).Therefore, manual measurements were made of the major and minor axis length using the line drag feature. ... This hypothesis was checked by measuring exact pore areas for 50 pores and then comparing those measurements to elliptical area calculations. ... Image Pro Plus also allowed for the measurement of the angle of the major axis relative to the direction in which the membrane was extruded oranbsp;...
|Title||:||Performance Modification Via Membrane Stretching|
|Author||:||Douglas R. Lloyd|
|Publisher||:||American Water Works Association - 2006|