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[Flux]

Hi,

I am a ChE masters student currently evaluating the removal of residual dyes via simultaneous multicomponent adsorption with AC.

My concern is related with respect to the calculation of the ADMI value.

Info:
- Using APHA method, published in Standard Methods for the examination of waste water.
- Not using CIElab method
- All tristimulus values for the blank, sample and pH corrected sample have been determined.
- Tristimuli have been converted to Munsell values using tables in Wysecki and Stiles' Color Science.
- Adams-Nickerson color difference (DE) has been calculated.

Problem:
- Calculation of ADMI????

No stock color samples have been prepared. Is this really necessary?

http://www.cheresour...do=new_post&f=2

The above article, refers to the calculation of a calibration factor (F), and then from there determine the ADMI value. However I don't have a clue what this APHA value is. Some texts sais the APHA value is the ADMI value??? CONFUSED....

There is also a way of determining the ADMI value by method of least squares. where ADMI = DE/a+(b*DE). If i'm not mistaken, you require ADMI values to do this (dependent variable), but that is what I want to determine.

SO LOST!!!

Please, if someone knows more about this subject matter, I NEED YOUR HELP!

I would like to get the chemistry (analytical) out of the way in order to focus on the engineering aspects.

Thanks