Modification strategy of biodegradable poly (butylene succinate) (PBS) membrane by introducing Al2O3 nanoparticles: preparation, characterization and wastewater treatment

Abstract

a b s t r a c tNovel biodegradable poly (butylene succinate) membranes were modified by introducing Al 2 O 3 nanoparticles. A series of non-solvents (i.e. methanol, methanol/isopropanol (50/50, v/v), isopropanol) is used as coagulants. The correlation between membrane morphology, mechanical properties, hydrophilicity, thermal stability and permeation properties of membranes were examined as functions of non-solvents used in coagulation bath and Al 2 O 3 nanoparticle concentrations. The modified membranes were characterized by contact angle, scanning electron microscopy, thermogravimetric analysis, tensile testing and dynamic test of tomato canning wastewater treatment. The experimental results elucidated that modified membranes exhibit significant differences in surface properties and inherent properties due to Al 2 O 3 nanoparticles addition. In addition, a substantial increase in mechanical properties and resistance of membranes was observed for the poly (butylene succinate) membranes cast in isopropanol coagulation bath of increasing Al 2 O 3 nanoparticles up to 1 wt.%. These membranes have more comprehensive potential to reject the wastewater pollutants properly than others.

Going beyond Cellulose and Chitosan: Synthetic Biodegradable Membranes for Drinking Water, Wastewater, and Oil–Water Remediation

“…Ebrahimpour et al described the preparation of a novel PBS/Al 2 O 3 nanoparticle composite membrane using the phase inversion method. 127 The experimental results indicated substantial improvement in surface and mechanical properties for PBS membranes cast in an isopropanol coagulation bath with an increasing Al 2 O 3 nanoparticle concentration up to 1 wt %. The membranes were compacted at a pressure of 7 bar and exhibited a pure water permeability of 13 L/m 2 •h•bar, 85 L/ m 2 •h•bar permeate flux of tomato canning wastewater, a COD rejection of 85%, a TDS rejection of 70%, and a turbidity rejection of 98%.…”

“…Ebrahimpour et al described the preparation of a novel PBS/Al 2 O 3 nanoparticle composite membrane using the phase inversion method . The experimental results indicated substantial improvement in surface and mechanical properties for PBS membranes cast in an isopropanol coagulation bath with an increasing Al 2 O 3 nanoparticle concentration up to 1 wt %.…”