Disclosed herein are processes for the recovery of 1,3-propanediol from an
aqueous feed stream. The present invention involves contacting an aqueous
feed stream that comprises water, 1,3-propanediol, and at least one
contaminant with at least one solvent extractant to form a mixture. The
mixture is separated into a first phase and a second phase. The second
phase comprises a majority of the water from the aqueous feed stream. The
first phase comprises solvent extractant and at least some of the
1,3-propanediol that was present in the aqueous feed stream. The weight
ratio in the first phase of 1,3-propanediol to any one contaminant
present is greater than the weight ratio of 1,3-propanediol to the same
contaminant in the aqueous feed stream prior to the aqueous feed stream
being contacted with the solvent extractant. The first phase can be
removed from the separated second phase in order to recover the
1,3-propanediol.