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Some notes on entropy

The concept of entropy as a general measure of the disorder of a system is, of course, highly relevant in solid-liquid separation because the degree of restoration of the order (the reduction in entropy) describes the success of the separation process. Fundamentally, entropy is a measure of the way in which the total energy of the system is distributed amongst its constituent atoms. [Pg.542]

In order to be able to evaluate the relative reduction in entropy during or after the separation process, we have to be able to calculate the entropy of the suspension as a function of the sohds concentration. The necessary relationship may be derived in analogy with a molecular model for an ideal solution as used in chemical thermodynamics, summarized in the following. A very small sohd particle is treated simply as if it were a large molecule. [Pg.542]

Assuming, in the first instance, mono-sized particles, completely interchangeable with pockets of fluid of the same size without affecting the [Pg.542]

From molecular thermodynamics, the entropy, S, is proportional to the natural logarithm of the multiplicity W, i.e. [Pg.543]

Stirling s approximation for equation 18.29, used with equation 18.30, gives the entropy of a suspension [Pg.543]


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