High-performance antibacterial tight ultrafiltration membrane constructed by co-deposition of dopamine and tobramycin for sustainable high-salinity textile wastewater management

Wenyuan Ye, Fan Yu, Zijian Yu, Na Kong, Xiaoyan Lin, Riri Liu, Jiale Du, Xuan Huang, Ailiang Gu, Sotto Arcadio, Wenyi Zhang, Xuewei Li, Shuaifei Zhao, Ming Xie, Qinghua Liang, Jiuyang Lin

Research output: Contribution to journalArticlepeer-review

Abstract

High-salinity textile wastewater is a pressing environmental concern, urgently requiring the appropriate treatment. Sustainable management of high-salinity textile wastewater via fractionation of the existing dyes and inorganic salts (NaCl) using selective separation membranes is a key approach to address this detrimental concern. Herein, tight composite ultrafiltration membranes with impressive antibacterial function were constructed using one-step co-deposition of dopamine and tobramycin on the porous substrate to fractionate the dyes and NaCl. Triggered by ammonia persulfate, the polydopamine/tobramycin coating layer imparts the fabricated composite ultrafiltration membranes with tight surface structure and narrow pore size distribution, enabling effective dyes/salts fractionation. Specifically, the tight composite ultrafiltration membrane with a molecular weight cutoff of 3692 Da experienced a > 98.0 % rejection against various reactive dyes (molecular weight: <1000 Da) with nearly complete salt transmission (<0.8 % NaCl rejection), demonstrating an effective fractionation of dyes and salts. Additionally, the incorporated tobramycin as a broad-spectrum antibiotic endowed the tight composite ultrafiltration membrane with a sufficient inhibition efficiency (i.e., 100 %) against E. coli bacteria in a short-time contact (i.e., 3 min). Thereby, the tight composite ultrafiltration membrane constructed by fast co-deposition of dopamine and tobramycin established an unparalleled platform technology for sustainable resource recovery (dyes or salts) from high-salinity textile wastewater.

Original languageEnglish
Article number117482
JournalDesalination
Volume579
Early online date28 Feb 2024
DOIs
Publication statusE-pub ahead of print - 28 Feb 2024

Keywords

  • Antibacteria
  • High-salinity textile wastewater
  • Polydopamine coating
  • Tight ultrafiltration membranes
  • Tobramycin

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering
  • General Materials Science
  • Water Science and Technology
  • Mechanical Engineering

Fingerprint

Dive into the research topics of 'High-performance antibacterial tight ultrafiltration membrane constructed by co-deposition of dopamine and tobramycin for sustainable high-salinity textile wastewater management'. Together they form a unique fingerprint.

Cite this