Journal
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
Volume 51, Issue 12, Pages 1187-1220Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/10643389.2020.1753633
Keywords
Microalgae; micropollutants; photobioreactor
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Funding
- Ministry of Oceans and Fisheries, Korea
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This paper reviews the potential and mechanisms of microalgae-based systems for removing organic micropollutants, compares them with other treatment methods, and provides recommendations for future research.
Micropollutants have become a serious environmental problem with several negative outcomes for human health and ecosystems. Many efforts have been made to remove micropollutants using a variety of physical, chemical and biological methods. By far, the most attention has been paid to microalgae-based technologies for wastewater treatment in order to obtain high-quality effluents, recover algal biomass for fertilizers, protein-rich feed, biofuel, and put them to other practical use. This paper reviews the potential of microalgae-based systems for the removal of organic micropollutants from open ponds to closed photobioreactors coupled by suspended microalgal cells, immobilized cells, or microalgae-microbial consortia. The inhibition of micropollutants on microalgae growth as well as micropollutant removal mechanisms performed by microalgae-based systems are also discussed. Other treatment methods for the removal of micropollutants are analyzed to show the advantages and limitations of microalgae-based treatment strategies, from which some possible combined systems can be suggested. Finally, some recommendations for future studies on this topic are proposed.
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