Recovery of PVA using polyethersulfone (PES)‎ hollow fiber ultrafiltrationmembranes : part II: effect of carboxymethyl cellulose (CMC)‎ concentration

الملخص EN

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.