Should CO2 be in ADM1 liquid phase too?

[adam-a-a]

          @adam-a-a I'm wondering where this comment is from? Do you have another component for dissolved CO2? If `S_h2` and `S_ch4` can have liquid phase, I'd expect `S_co2` to have liquid phase as well as it's more dissoluble in the water

Originally posted by @yalinli2 in #1000 (comment)

[adam-a-a]

@yalinli2 After further reflection, CO2 dissolved in the liquid phase would be accounted for in S_IC, inorganic carbon in liquid phase. Thus, S_co2 is only explicitly considered in the gas phase in the ADM1 model. However, looking at the literature, S_co2 in liquid phase could be represented as S_IC - S_HCO3-

If that adds up for everyone, we can close this issue.

[yalinli2]

OK, so you have reactions to account for the gas-liquid equilibrium of CO2? If that's the case then it should be OK, can you modify the comment to reflect this? Thank you!
https://github.com/watertap-org/watertap/blob/main/docs/technical_reference/unit_models/translators/translator_adm1_asm1.rst
https://github.com/watertap-org/watertap/blob/main/docs/technical_reference/unit_models/translators/translator_asm1_adm1.rst

[MarcusHolly]

Just for additional clarity, dissolved CO2 is represented by the constraint below in ADM1 (and Modified ADM1). I will update the documentation to make this more clear