TY - JOUR
T1 - 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
AU - Li, Yecong
AU - Zhou, Wenguang
AU - Hu, Bing
AU - Min, Min
AU - Chen, Paul
AU - Ruan, Roger R.
PY - 2012/9
Y1 - 2012/9
N2 - 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 200μmolm-2s-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 120μmolm-2S-1 for all responses except for COD removal. For C. protothecoide, the optimum light intensity was 30μmolm-2S-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.
AB - 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 200μmolm-2s-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 120μmolm-2S-1 for all responses except for COD removal. For C. protothecoide, the optimum light intensity was 30μmolm-2S-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.
KW - Algae
KW - Biodiesel production
KW - Biomass accumulation
KW - Light intensity
KW - Municipal wastewater
UR - http://www.scopus.com/inward/record.url?scp=84864325370&partnerID=8YFLogxK
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U2 - 10.1002/bit.24491
DO - 10.1002/bit.24491
M3 - Article
C2 - 22407758
AN - SCOPUS:84864325370
SN - 0006-3592
VL - 109
SP - 2222
EP - 2229
JO - Biotechnology and bioengineering
JF - Biotechnology and bioengineering
IS - 9
ER -