Water retrieval from aqueous mixture of organic phosphates

Details Water retrieval from aqueous mixture of organic phosphates Water retrieval from aqueous mixture of organic phosphates

1995-03-27

1997-12-30

Nessler, Cynthia L.

Liquid purification or separation

Processes

Ion exchange or selective sorption

210692, 210799, 210259, 210265, 210266, 210683, C02F 128, C02F 142

Patent

active

057026092

ABSTRACT:
Process and apparatus for separating aryl phosphates and esters and hydrolysates thereof from water in an aqueous mixture thereof. A superposed layer of the mixture is decanted from a lower layer of the phosphates, esters and hydrolysates. The superposed layer is filtered with a filter having a pore size of between 1 micron and 25 microns to remove globules and solid particles. The effluent is then subjected to demineralization with an anion exchange resin to remove most of the hydrolysates. Thereafter a sorber composed of an organic polymeric material such as polypropylene removes any remaining phosphates and esters down to less than 250 ppb.

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