Growing green microalgae for biofuel production in nutrient-rich centrate from municipal wastewater treatment plant

Liang Wang, Min Min, Yecong Li, Yifeng Chen, Paul Chen, Roger Ruan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The wastewater generated from centrifuging activated sludge, named centrate, contains highest amount of ammonia nitrogen and active phosphorus among several wastewaters after different processes in municipal wastewater treatment plant, which could be used as a valuable growth media for microalgae for the dual purpose of removing nutrients and obtaining a feedstock for biofuel production. This research was conducted step by step, resolving question by question which might account for the inhibition of fast algal growth in the centrate. Finally, the conclusion that all the possible inhibitions of (1) residual polymer, (2) unbalanced N/P ratio, and (3) deficient trace element Zn were not present was made. Algae could grow well in 100% centrate without any addition of supplementary elements. Further study will focus on scale-up, algal lipid content analysis.

Original languageEnglish (US)
Title of host publicationAmerican Society of Agricultural and Biological Engineers Annual International Meeting 2009, ASABE 2009
Pages1787-1800
Number of pages14
StatePublished - Dec 1 2009
EventAmerican Society of Agricultural and Biological Engineers Annual International Meeting 2009 - Reno, NV, United States
Duration: Jun 21 2009Jun 24 2009

Publication series

NameAmerican Society of Agricultural and Biological Engineers Annual International Meeting 2009, ASABE 2009
Volume3

Other

OtherAmerican Society of Agricultural and Biological Engineers Annual International Meeting 2009
CountryUnited States
CityReno, NV
Period6/21/096/24/09

Keywords

  • Biofuel
  • Centrate
  • Microalgae
  • Nitrogen
  • Phosphorus
  • Polymer
  • Wastewater

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  • Cite this

    Wang, L., Min, M., Li, Y., Chen, Y., Chen, P., & Ruan, R. (2009). Growing green microalgae for biofuel production in nutrient-rich centrate from municipal wastewater treatment plant. In American Society of Agricultural and Biological Engineers Annual International Meeting 2009, ASABE 2009 (pp. 1787-1800). (American Society of Agricultural and Biological Engineers Annual International Meeting 2009, ASABE 2009; Vol. 3).