A novel PES-C/(GO-COOH/Ce) blended membrane for treating heavy-metal-ion wastewater. (April 2023)

• Record Type: Journal Article
• Authors: Zhang, Jie; Li, Baining; Xue, Hongdan; Zhang, Chunyan; Li, Jinjing; Zhou, Shujing
• Is Part Of: High performance polymers. Volume 35:Number 3(2023)
• Page Start: 295
• Page End: 309
• Publication Date: 2023-04
• Subjects: Blended membrane -- PES-C -- GO-COOH/Ce -- lead-ion interception; Polymerization -- Periodicals; Polymers -- Periodicals; 547.7
• DOI: 10.1177/09540083221130936
• Languages: English
• ISSNs: 0954-0083

Abstract

A GO-COOH/Ce complex was introduced into a phenolphthalide polythersulfone (PES-C) matrix to prepare a PES-C/(GO-COOH/Ce) blended membrane by nonsolvent-induced phase transformation (NIPS). FT-IR and EDS analysis confirmed that the GO-COOH/Ce complex was successfully incorporated into the PES-C matrix. SEM showed that the blended membrane possessed an asymmetric structure with finger-like pores. The best comprehensive performance was obtained for a PES-C/(GO-COOH/Ce) blended membrane prepared using 0.1 wt .% of the GO-COOH/Ce complex in the casting liquid. The specific results for the blended membrane were as follows: the fluxes of pure water and 0.1 g/L lead nitrate solution were 272 L/m 2 ·h and 214 L/m 2 ·h, respectively; the rejection of bovine serum albumin (BSA) was 99.4%; the rejection of lead ions was 96.2%; the moisture content was 10.9%; the contact angle was 67.1°; the Young's modulus was 35.7 MPa; and the flux recovery ratio was 1.5 times higher than that of the pure PES-C membrane. The antibacterial-zone diameters of the PES-C/(GO-COOH/Ce) blended membrane used against Escherichia coli and Staphylococcus aureus were 2.50 cm and 2.88 cm, respectively. A catalytic cleaning test showed a flux recovery ratio of 63% after washing the PES-C/(GO-COOH/Ce) blended membrane with a 0.2 g/L acetic acid solution for 0.5 h.