carboxylic acid diol mixture 200 would be referred to as a terephthalic acid diol mixture carboxylic acids include any carboxylic acid produced via controlled oxidation of an organic precursor compound for example carboxylic acids include aromatic dicarboxylic acids preferably having 8 to 14 carbon atoms aliphatic dicarboxylic acids preferably having 4 to 12 carbon atoms or cycloaliphatic dicarboxylic acids preferably having 8 to 12 carbon atoms other examples of suitable carboxylic acids include but are not limited to terephthalic acid benzoic p toluic isophthalic acid trimellitic acid naphthalene dicarboxylic acid cyclohexanedicarboxylic acid cyclohexanediacetic acid diphenyl 4 4 u2032 dicarboxylic acid diphenyl 3 4 u2032 dicarboxylic acid 2 2 dimethyl 1 3 propandiol dicarboxylic acid succinic acid glutaric acid adipic acid azelaic acid sebacic acid and mixtures thereof terephthalic acid slurry is conventionally synthesized via the liquid phase oxidation of paraxylene in the presence of suitable oxidation catalyst suitable catalysts include but are not limited to cobalt manganese and bromine compounds which are soluble in the selected solvent in one embodiment of the invention the catalyst comprises cobalt bromine and manganese the cobalt and manganese combined can be in concentrations of about 100 ppm to about 2700 ppm by weight in the liquor the bromine can be in concentrations of about 1000 ppm to about 2500 ppm by weight in the liquor the carboxylic acid slurry 30 is fed to a solid liquid displacement zone 40 capable of removing a portion of the liquid contained in the carboxylic acid slurry 30 to produce a slurry or cake carboxylic acid product in conduit 70 the removal of a portion of the liquid to produce.