To reduce CO2 concentration and increase pH value of RO permeate water a CO2 stripper system shall be used. The stripper system includes a packed bed column that provides required surface for air-water contact and an air blower.
The analysis of influent water is as follows:
Temp= 20 C
CO2= 64.6 ppm
HCO3= 4.9 ppm
CO3= ~ 0.0 ppm
How can I measure the concentration of HCO3 and CO3 and the pH value of the effluent product? The concentration of CO2 in the effluent can be determined according to the CO2 content of inlet air and Henry’s law.
To my knowledge, using carbonate equilibrium equations there are four unknown parameters include CT, CO3, HCO3, and H concentrations, while there are just three equilibrium equations.
Regards
I want to tell her that I am a PhD in Geology and the question should be asked Manuel R. Palacios-Fest, Terra Nostra Earth Science Research LLC, Tucson, Arizona, 85740, USA, [email protected] or Michael M. Mcglue, University of Kentucky, Department of Earth and Environmental Sciences, Lexington, Kentucky, 40506, USA, [email protected]
Hello Hossein. I think measuring the pH of the should be possible, One can use of the various available pH meters to do that.
Then, If one wants to assume that that is equilibrium pH plus other assumption, one can solve the resulting equations and find those concentrations.
Dear Monsuru,
Thank you so much for your response. However, the system is not installed yet and pH measuring of product water is impossible.
I need to model and design the mentioned system.
Yes, the concentration of CO2 in the effluent can be determined according to the CO2 content of inlet air and Henry’s law. I agree with Karimi answer.
Dear Hussein Al-Hazmi
Thank you so much.
It was so helpful and the problem was solved.
Regards
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