Abaynesh Yihdego Gebreyohannes

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Questions related from Abaynesh Yihdego Gebreyohannes

PAN grafting on starch?

Is it possible to directly graft PAN on starch instead of using the standard co-polymerization of acrylonitrile ?

22 October 2019 234 2 View

HPLC pump for cross-flow membrane filtration?

I am using an HPLC pump to re-circulate feed stream in a crossflow membrane module. Somewhere along this line, I have put a needle valve to induce back-pressure for permeation. Apparently,...

19 January 2018 8,347 4 View

How can I calculate the membrane porosity from SEM?

I have SEM image of both surface and cross-section of the active side of a membrane. Is it possible to calculate the membrane porosity using Image J? Thanks

24 July 2015 9,010 7 View

How can I create a pectin solution with a distinct color?

I have pectin solution and wanted to characterize it based on its color. Can anyone suggest a possible way changing the color of the pectin solution, which is transparent to a colored one such as...

07 June 2015 4,119 1 View

What is the best way to measure the kinetics of pectinase immobilized to magnetic nanoparticles?

I have immobilized pectinase on magnetic nanoparticles and want to measure the kinetics in a stirred tank reactor (batch). But my worry is: 1. How is it possible to get a vigorous mixing of the...

26 March 2014 6,975 9 View