Bioflocculation as an innovative harvesting strategy for microalgae |
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| Authors: | Md Asraful Alam Dries Vandamme Wan Chun Xinqing Zhao Imogen Foubert Zhongming Wang Koenraad Muylaert Zhenhong Yuan |
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| Institution: | 1.Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion,Chinese Academy of Sciences,Guangzhou,China;2.Laboratory of Aquatic Biology,KU Leuven Kulak,Kortrijk,Belgium;3.School of Life Science and Biotechnology,Dalian University of Technology,Dalian,China;4.School of Life Science and Biotechnology,Shanghai Jiao Tong University,Shanghai,China;5.Research Unit Food and Lipids, Department of Molecular and Microbial Systems Kulak,KU Leuven Kulak,Kortrijk,Belgium;6.Leuven Food Science and Nutrition Research Centre (LFoRCe),KU Leuven,Heverlee,Belgium |
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| Abstract: | Microalgae are a promising new source of biomass for the production of third generation biofuels but, so far, the majority of microalgal biomass has been used for high-value applications. New low-cost technologies are needed to make the production and processing of microalgae economically feasible for low-value applications. A major challenge lies in the harvesting of microalgae, which requires a cost-efficient separation technology. Flocculation, especially bioflocculation, is an attractive low-cost separation technology. Various new bioflocculation strategies have been claimed to generate major advances in cost-efficient harvesting. Here, we review the recent advances in bioflocculation based on algal–bacterial, algal–fungal, or algal–algal interactions within the framework of microalgae biomass harvesting for biofuel production. We also discuss recent advances using infochemicals and genetic engineering for the induction of bioflocculation. |
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