Coupled microalgal cultivation with the treatment of domestic sewage and high-level CO2

Environmental Technology
Liqun JiangLijie Zhang

Abstract

The ability of Scenedesmus quadricauda SDEC-13 to accumulate biomass and remove nutrients in domestic sewage from campus when incorporated with 15% CO2 was explored. The maximum specific growth rate, biomass productivity, biomass concentration, and CO2 fixation rate were 0.14 d-1, 0.08 g/L/d, 0.69 g/L, and 0.076 g-CO2/L/d, respectively. The lipid content of SDEC-13 at different culture phases was also evaluated and it increased following nutrient limitation. The removal efficiencies of total nitrogen, total phosphorus, nitrate, and ammonium were all above 90%. A coupled system was designed with hydraulic retention time of 8.33 d and biomass harvest ratio of 12%, which could yield 0.54 g/L biomass and 25% lipid content with efficient domestic sewage treatment.

References

May 17, 2008·Applied Microbiology and Biotechnology·Bei WangChristopher Q Lan
Jun 10, 2009·Applied Biochemistry and Biotechnology·Qing-xue KongRoger Ruan
Dec 4, 2012·Bioresource Technology·Yinli JiangTianzhong Liu
Mar 16, 2013·Bioresource Technology·Mingming SongGuixia Ma
Dec 20, 2013·Environmental Technology·Fabio Rubens SoaresEmília Satoshi Miyamaru Seo

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