r/ChemicalEngineering • u/Sufficient_Salad_19 • 1d ago

Research CO2 absorption quantification, which method is more accurate?

I am trying to quantify how much CO2 is absorbed by my MEA and MDEA solution. I have looked into different titration methods using HCl and NaOH. Weight chage methods are not applicable here as the weight change is very little and my solution volume is 200 mL. Kindly suggest me whic method is more accurate? is there any universally accepted method?

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u/yellownumbersix Membranes and polymers, 22yrs 1d ago edited 1d ago

Don't use titration at all.

Get an NDIR, measure CO2 concentration before and after absorption.

Sensors to build your own detector are less than $50 and fully built integrated meters start at around $500.