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[cd001i]

Hi All,

I work for a company that manufactures wastewater evaporators. One of the most common waste streams we deal with include those that have large a concentration of surfactants. In order to size our heat exchangers correctly, we need to know what the specific heat capacity of the surfactant solutions are. I've been trying to do literature searchs on this, and I haven't been able to find any references/data on the specific heat capacity of surfactant solutions. Does anybody out there have any data that I could use for aqueous solutions 0.1 - 99%? Any surfactant is fine.

THanks

[pawan]

For dillute solutions U can use specific heat of water on safer side.
For higher concentrations generally the specific heat of base materials
vary from 0.5 - 0.6 Kcal/Kg/°C or upto 0.8 in some rare cases .
So accordingly U can find it out for the mixture.
The basis is wighted acerage for water & acid content.

I have assumed that surfactant is mainly either fatty oils, acids,
alcohols driven compounds. So U can assume it to be a fatty acid
for general & design purpose.