Biodegradable Chitosan-Based Membranes for Highly Effective Separation of Emulsified Oil/Water

Wan, Peng1,2; Yang, Xuanning3; Feng, Qinhua4; Shi, Shuyu3; Deng, Baolin5,6; Zhang, Lina4

2022-11-01

10.1089/ees.2022.0254

ENVIRONMENTAL ENGINEERING SCIENCE   影响因子和分区

1092-8758

1557-9018

Efficient separation of oil droplets from oil/water emulsions is necessary for many energy and food industrial processes and for industrial wastewater treatment. Membrane microfiltration has been explored to address this issue because it is simple to operate and low in cost. However, filtration of oil droplets with a size around or less than 1 mu m is still a major challenge. Furthermore, the fabrication process for polymeric membranes often uses hazardous organic solvents and petroleum-derived and nonbiodegradable raw materials, which pose additional environmental health and safety risk. In this study, we examined the use of chitosan-based membranes to efficiently remove oil droplets with an average diameter of similar to 1 mu m. The membranes were fabricated based on the rapid dissolution of chitosan in an alkaline/urea solvent system at a low temperature, thus avoiding the use of any toxic organic solvent. The chitosan membranes were further modified by dopamine and tannic acid (TA). The as-prepared membrane was characterized in terms of surface morphology, pore size distribution, and mechanical strength. The membrane performance was evaluated on a custom-designed crossflow filtration system. The results showed that the modified chitosan membrane with dopamine and TA had a water flux of 230.9 LMH at 1bar transmembrane pressure and oil droplet rejection of 99%. This water flux represented an increase of more than 10 times when compared with the original chitosan membrane without modification. The study also demonstrated excellent antifouling properties of the modified membrane that could achieve near 100% water flux recovery.

biodegradable material chitosan dopamine membrane separation oil water emulsion

SCI

英语

其他

Engineering ; Environmental Sciences & Ecology

Engineering, Environmental ; Environmental Sciences

WOS:000878611900001

MARY ANN LIEBERT, INC

ENGINEERING

Web of Science

1.Univ Missouri, Dept Biomed Biol & Chem Engn, Columbia, MO USA
2.Shenzhen Water Planning & Design Inst Co Ltd, Guangdong Prov Engn & Technol Res Ctr Water Affair, Shenzhen, Peoples R China
3.Southern Univ Sci & Technol, Sch Environm Sci & Engn, Shenzhen, Peoples R China
4.Wuhan Univ, Coll Chem & Mol Sci, Wuhan, Peoples R China
5.Univ Missouri, Dept Civil & Environm Engn, Columbia, MO USA
6.Univ Missouri, Dept Civil & Environm Engn, Columbia, MO 65211 USA

Wan, Peng,Yang, Xuanning,Feng, Qinhua,et al. Biodegradable Chitosan-Based Membranes for Highly Effective Separation of Emulsified Oil/Water[J]. ENVIRONMENTAL ENGINEERING SCIENCE,2022.

Wan, Peng,Yang, Xuanning,Feng, Qinhua,Shi, Shuyu,Deng, Baolin,&Zhang, Lina.(2022).Biodegradable Chitosan-Based Membranes for Highly Effective Separation of Emulsified Oil/Water.ENVIRONMENTAL ENGINEERING SCIENCE.

Wan, Peng,et al."Biodegradable Chitosan-Based Membranes for Highly Effective Separation of Emulsified Oil/Water".ENVIRONMENTAL ENGINEERING SCIENCE (2022).