Authors
Abstract
Polyethersulfone (PES) hollow fiber ultrafiltration (UF) membrane with the molecular
weight cut-off (MWCO) 20,000 was used for the recovery of polyvinyl alcohol (PVA) from
the simulated wastewater. An attempt to study the effect of carboxymethyl cellulose as
synthetic warp sizing agents on the PVA recovery was investigated in this case.
Experimental results shown that PVA concentration in the retentate of PES hollow fiber
membrane were lower with addition of carboxymethyl cellulose (CMC) in PVA solution.
Besides, higher trans-membrane pressure from 1.0 to 2.1 bars, solution temperature 50-75℃,
and feed velocity 0.16-0.32 m/s, improved the PVA recovery in two different PVA solutions.
PES hollow fiber ultrafiltration process was efficient for PVA recovery from the simulated
wastewater using PVA solution with low carboxymethyl cellulose (CMC) concentration as
synthetic warp sizing agents.
Keywords
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