Effect of light intensity on algal biomass accumulation and biodiesel production for mixotrophic strains Chlorella kessleri and Chlorella protothecoide cultivated in highly concentrated municipal wastewater

Effect of light intensity on algal biomass accumulation and biodiesel production for mixotrophic strains Chlorella kessleri and Chlorella protothecoide cultivated in highly concentrated municipal wastewater

2012

Keywords: algae; municipal wastewater; light intensity; biomass accumulation; biodiesel production Abstract: In this research, the effect of light intensity on biomass accumulation, wastewater nutrient removal through algae cultivation, and biodiesel productivity was investigated with algae species Chlorella kessleri and Chlorella protothecoide. The light intensities studied were 0, 15, 30, 60, 120, and 200?µmol?m?2?s?1. The results showed that light intensity had profound impact on tested responses for both strains, and the dependence of these responses on light intensity varied with different algae strains. For C. kessleri, the optimum light intensity was 120?µmol?m?2?S?1 for all responses except for COD removal. For C. protothecoide, the optimum light intensity was 30?µmol?m?2?S?1. The major components of the biodiesel produced from algae biomass were 16-C and 18-C FAME, and the highest biodiesel contents were 24.19% and 19.48% of dried biomass for C. kessleri and C. protothecoide, respectively. Both species were capable of wastewater nutrients removal under all lighting conditions with high removal efficiencies. Biotechnol. Bioeng. 2012;109: 2222–2229. © 2012 Wiley Periodicals, Inc.

Zhou, Wenguang
Li, Yecong
Hu, Bing
Woodruff, Laurel G
Chen, Paul
Ruan, Roger

U of M- Dept. of Bioproducts/Biosystems Engineering and Center for Biorefining

7

Agricultural Drainage

Wastewater
Waste water
waste-water
wastewaters
biodiesel
bio-diesel
bio diesel
biomass
biomasses
algae
MWTP
municipal wastewater treatment plant
municipal wastewater treatment plants
MWTPs
light intensity

2010-2019

Yes

Do Not Have Copyright Permission

Minnesota Water Research Digital Library