Patent ID: 9394211
Filing Date: 2016-07-19
CPC Classification: B01D,C02F,C07B,C07C,D21C

Claim Text:
1. A process for enriching or isolating a target compound from pulp and paper waste water, said process comprising the steps of: obtaining a condensate from a recovery evaporator or a reverse osmosis (RO) retentate of condensates of a pulp and paper mill, or both, the condensate, retentate or both being substantially free of higher molecular weight cellulose and/or lignin and/or lignin-derived material, adjusting pH of the condensate, RO retentate or both to about pH 2.0, and extracting the condensate with an organic solvent by solid phase extraction (SPE), liquid-liquid extraction or solid-liquid extraction to produce an extract containing said target compound.