A fermentation slurry containing S.kanamyceticus cell is filtered using a continuous rotary vacuum filter. 120 kg slurry is fed to the filter 1 kg slurry contain 60 g cell solids. To improve filtration rates,particles of diatomaceous-earth filter aid are added at a rate of 10 kg. The concentration of kanamycin in the slurry is 0.05% by weight. Liquid filtrate is collected at rate of 112 kg ; the concentration of kanamycin in the filtrate is 0.045% (w/w) . Filter cake containing cell and filter aid is continuously removed from the filter cloth.
What percentage liquid is the filter cake ?
If the concentration of kanamycin in the filter cake liquid is the same as in filtrate, how much kanamycin is absorbed per kg filter aid ?