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Int. J. Mol. Sci. 2017, 18(1), 79;

Microalgal Cultivation in Secondary Effluent: Recent Developments and Future Work

School of Life Science, Shanxi University, Taiyuan 030006, China
Author to whom correspondence should be addressed.
Received: 27 October 2016 / Revised: 19 December 2016 / Accepted: 28 December 2016 / Published: 1 January 2017
(This article belongs to the Special Issue Algae Based Bio-Renewable Energy for Sustainability)
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Eutrophication of water catchments and the greenhouse effect are major challenges in developing the global economy in the near future. Secondary effluents, containing high amounts of nitrogen and phosphorus, need further treatment before being discharged into receiving water bodies. At the same time, new environmentally friendly energy sources need to be developed. Integrating microalgal cultivation for the production of biodiesel feedstock with the treatment of secondary effluent is one way of addressing both issues. This article provides a comprehensive review of the latest progress in microalgal cultivation in secondary effluent to remove pollutants and accumulate lipids. Researchers have discovered that microalgae remove nitrogen and phosphorus effectively from secondary effluent, accumulating biomass and lipids in the process. Immobilization of appropriate microalgae, and establishing a consortium of microalgae and/or bacteria, were both found to be feasible ways to enhance pollutant removal and lipid production. Demonstrations of pilot-scale microalgal cultures in secondary effluent have also taken place. However there is still much work to be done in improving pollutants removal, biomass production, and lipid accumulation in secondary effluent. This includes screening microalgae, constructing the consortium, making use of flue gas and nitrogen, developing technologies related to microalgal harvesting, and using lipid-extracted algal residues (LEA). View Full-Text
Keywords: microalgae; the treatment of secondary effluent; pollutants removal; biomass production; lipid accumulation microalgae; the treatment of secondary effluent; pollutants removal; biomass production; lipid accumulation
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Lv, J.; Feng, J.; Liu, Q.; Xie, S. Microalgal Cultivation in Secondary Effluent: Recent Developments and Future Work. Int. J. Mol. Sci. 2017, 18, 79.

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