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

被引：25

作者：

Wang, Fangfang ^{[1
,2
,3
,4
]}

Zhang, Hao ^{[1
,2
,3
]}

Sun, Yufeng ^{[2
,3
]}

Wang, Shengwen ^{[1
,2
,3
]}

Zhang, Li ^{[1
]}

Wu, Aiguo ^{[2
,3
,4
,5
]}

Zhang, Yujie ^{[2
,3
,4
,5
]}

机构：

[1] Ningbo Univ, Sch Mat Sci & Chem Engn, Ningbo 315211, Peoples R China

[2] Chinese Acad Sci, Cixi Inst Biomed Engn, Chinese Acad Sci CAS Key Lab Magnet Mat & Devices, Int Cooperat Base Biomed Mat Technol & Applicat, Ningbo 315201, Peoples R China

[3] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Zhejiang Engn Res Ctr Biomed Mat, Ningbo 315201, Peoples R China

[4] Adv Energy Sci & Technol Guangdong Lab, Huizhou 516000, Peoples R China

[5] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES | 2023年 / 227卷

关键词：

Calcium alginate; Tetrabutylammonium hydroxide; Aerogel membrane; ANTIBACTERIAL PROPERTY; CRUDE-OIL; OIL/WATER; HYDROGEL; COATINGS;

D O I：

10.1016/j.ijbiomac.2022.11.294

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

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.

引用

页码：1141 / 1150

页数：10

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