Hello
Thanks for reading my question.
As it is known, an increase in the temperature of an adsorbate stream (in this case air+VOC) has a negative effect on the adsorption process. In other words, lowering the temperature is favorable for adoption.
But in practice, for adsorption of VOCs from the air with activated carbon, it is common to not cooling the inlet stream. What causes this decision to be made? Is it a matter of desorption?
The inlet temperature of VOCs adsorption typically is between 77 to 104 F according to EPA.
Thanks again.
Read this article:
https://www3.epa.gov/ttncatc1/dir1/cs3-1ch1.pdf
Best regards
https://www.epa.gov/sites/production/files/2018-10/documents/final_carbonadsorberschapter_7thedition.pdf
It is may be due to rapid microstructure formation at that temperature range and moreover when particle size decreases the adsorption potentialal increases because of the increase in surface area with the decrease in size of particles
Thanks for your responses S Kalaiselvan and Abdelghani Rouini
Your information are really helpful
Why should the temperature be less than 25-40oC? VOCs are not gaseous substances, but organic compounds boiling in the range of 30-250oC. At lower temperatures, the dispersed small liquid droplets could form larger, which would make adsorption difficult
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