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Shi L, Huang J, Zeng G, Zhu L, Gu Y, Shi Y, Yi K, Li X. Roles of surfactants in pressure-driven membrane separation processes: a review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:30731-30754. [PMID: 31494849 DOI: 10.1007/s11356-019-06345-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 08/28/2019] [Indexed: 06/10/2023]
Abstract
Surfactants widely exist in various kinds of wastewaters which could be treated by pressure-driven membrane separation (PDMS) techniques. Due to the special characteristics of surfactants, they may affect the performance of membrane filtration. Over the last two decades, there are a number of studies on treating wastewaters containing surfactants by PDMS. The current paper gives a review of the roles of surfactants in PDMS processes. The effects of surfactants on membrane performance were discussed via two aspects: influence of surfactants on membrane fouling and enhanced removal of pollutants by surfactants. The characteristics of surfactants in solution and at solid-liquid interface were summarized. Surfactants in membrane filtration processes cause membrane fouling mainly through adsorption, concentration polarization, pore blocking, and cake formation, and fouling degree may be influenced by various factors (feed water composition, membrane properties, and operation conditions). Furthermore, surfactants may also have a positive effect on membrane performance. Enhanced removal of various kinds of pollutants by PDMS in the presence of surfactants has been summarized, and the removal mechanism has been revealed. Based on the current reports, further studies on membrane fouling caused by surfactants and enhanced removal of pollutants by surfactant-aided membrane filtration were also proposed.
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Affiliation(s)
- Lixiu Shi
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, Hunan, China
- Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha, 410082, Hunan, China
| | - Jinhui Huang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, Hunan, China.
- Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha, 410082, Hunan, China.
| | - Guangming Zeng
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, Hunan, China.
- Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha, 410082, Hunan, China.
| | - Lei Zhu
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, Hunan, China
- Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha, 410082, Hunan, China
| | - Yanling Gu
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, Hunan, China
- Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha, 410082, Hunan, China
| | - Yahui Shi
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, Hunan, China
- Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha, 410082, Hunan, China
| | - Kaixin Yi
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, Hunan, China
- Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha, 410082, Hunan, China
| | - Xue Li
- Department of Bioengineering and Environmental Science, Changsha University, Changsha, 410003, Hunan, China
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