Superhydrophilic quaternized calcium alginate based aerogel membrane for oil-water separation and removal of bacteria and dyes

Fangfang Wang; Hao Zhang; Yufeng Sun; Shengwen Wang; Li Zhang; Aiguo Wu; Yujie Zhang

doi:10.1016/j.ijbiomac.2022.11.294

Superhydrophilic quaternized calcium alginate based aerogel membrane for oil-water separation and removal of bacteria and dyes

Int J Biol Macromol. 2023 Feb 1:227:1141-1150. doi: 10.1016/j.ijbiomac.2022.11.294. Epub 2022 Dec 1.

Authors

Fangfang Wang¹, Hao Zhang², Yufeng Sun³, Shengwen Wang², Li Zhang⁴, Aiguo Wu⁵, Yujie Zhang⁶

Affiliations

¹ School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China; Cixi Institute of Biomedical Engineering, International Cooperation Base of Biomedical Materials Technology and Application, Chinese Academy of Science (CAS) Key Laboratory of Magnetic Materials and Devices and Zhejiang Engineering Research Center for Biomedical Materials, Ningbo Institute of Materials Technology and Engineering, CAS, Ningbo 315201, China; Advanced Energy Science and Technology Guangdong Laboratory, Huizhou 516000, China.
² School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China; Cixi Institute of Biomedical Engineering, International Cooperation Base of Biomedical Materials Technology and Application, Chinese Academy of Science (CAS) Key Laboratory of Magnetic Materials and Devices and Zhejiang Engineering Research Center for Biomedical Materials, Ningbo Institute of Materials Technology and Engineering, CAS, Ningbo 315201, China.
³ Cixi Institute of Biomedical Engineering, International Cooperation Base of Biomedical Materials Technology and Application, Chinese Academy of Science (CAS) Key Laboratory of Magnetic Materials and Devices and Zhejiang Engineering Research Center for Biomedical Materials, Ningbo Institute of Materials Technology and Engineering, CAS, Ningbo 315201, China.
⁴ School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China.
⁵ Cixi Institute of Biomedical Engineering, International Cooperation Base of Biomedical Materials Technology and Application, Chinese Academy of Science (CAS) Key Laboratory of Magnetic Materials and Devices and Zhejiang Engineering Research Center for Biomedical Materials, Ningbo Institute of Materials Technology and Engineering, CAS, Ningbo 315201, China; Advanced Energy Science and Technology Guangdong Laboratory, Huizhou 516000, China; University of Chinese Academy of Sciences, Beijing 100049, China. Electronic address: aiguo@nimte.ac.cn.
⁶ Cixi Institute of Biomedical Engineering, International Cooperation Base of Biomedical Materials Technology and Application, Chinese Academy of Science (CAS) Key Laboratory of Magnetic Materials and Devices and Zhejiang Engineering Research Center for Biomedical Materials, Ningbo Institute of Materials Technology and Engineering, CAS, Ningbo 315201, China; Advanced Energy Science and Technology Guangdong Laboratory, Huizhou 516000, China; University of Chinese Academy of Sciences, Beijing 100049, China. Electronic address: zhangyujie@nimte.ac.cn.

PMID: 36464185
DOI: 10.1016/j.ijbiomac.2022.11.294

Abstract

In recent years, frequent oil spills and increasing industrial wastewater discharge have caused serious water pollution problems. In addition, there are often microbial and dye pollutants in oil-containing wastewater. The development of materials that can simultaneously treat these three pollutants is very important for the safe treatment and recovery of wastewater. In this work, a modified calcium alginate-based aerogel membrane (CTW) was prepared through sol spraying, Ca²⁺ crosslinking and freeze drying by using tetrabutylammonium hydroxide (TBA) quaternary ammonium salt modified sodium alginate (SA) as raw material and waterborne polyurethane (WPU) as adhesive. The results show that CTW membrane has super hydrophilic and underwater super-oleophobic properties, and can realize the separation oil-water emulsions under gravity, with the separation efficiency of >99 %. CTW membrane can also remove bacteria and dye such as Congo red from water by filtration, with removal rates of 100 % and 99 % respectively. The filtration results of mixed wastewater show that CTW membrane can realize one-step separation of oil, bacteria and dye in wastewater, and can also be recycled, having potential application prospect.

Keywords: Aerogel membrane; Calcium alginate; Tetrabutylammonium hydroxide.

MeSH terms

Alginates
Bacteria
Coloring Agents
Environmental Pollutants*
Wastewater*
Water

Substances

Wastewater
Coloring Agents
Alginates
Water
Environmental Pollutants