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Adsorption, coagulation, flocculation, and entropy

  1. Jun 8, 2015 #1
    1. The problem statement, all variables and given/known data
    Adsorption, coagulation, and flocculation are all important processes to remove or separate target substances from mixtures. In these processes, we can observe the spontaneous decrease of entropy.; can we therefore conclude that the second law of thermodynamics doesn't always apply. Comment on this contradiction.

    2. Relevant equations
    Hint: dH - TdST <= 0
  2. jcsd
  3. Jun 9, 2015 #2
    Think about the whole system entropy.
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