Mass Transfer
The surface renewal frequency in Danckwerts model of mass transfer is given by (KL: mass transfer co-efficient)

√(KL².DA)
KL²/DA
KL².DA
KL/DA²

ANSWER DOWNLOAD EXAMIANS APP

Mass Transfer
An example of elutioh is

Dissolution of tannin out of tree barks by water
Separation of uranium oxide from its ore by H₂SO₄ in a Pachuca tank
Separation of sugar from sugar beet by hot water
Recovery of vegetable oils from seeds

ANSWER DOWNLOAD EXAMIANS APP