TY - JOUR
T1 - Reduction of CO 2 by chlorella vulgaris cultured in biogas slurry
AU - Wang, Qinqi
AU - Li, Huai
AU - Wang, Cui
AU - Wei, Ping
PY - 2011/10/25
Y1 - 2011/10/25
N2 - The use of microalgae for CO 2 fixation and wastewater treatment has been one of the most important research fields of microalgal utilization. In this study, Chlorella vulgaris was cultivated in nutritious effluent from methane zymolysis, and after domestication, C. vulgaris grew well in different concentrations of biogas slurry. C. vulgaris had excellent growth and tolerance to high concentrations of CO 2, and the largest biomass productivity was obtained at the aeration of 1.5% CO 2. Therefore, the CO 2 reduction by C. vulgaris in biogas slurry was investigated. The results showed that increasing the growth rate of C. vulgaris and CO 2 concentration could enhance the amount of CO 2 reduction by C. vulgaris, and reducing the aeration also improved the removal efficiency of CO 2. The CO 2 removal efficiency reached 30.61% when the cultures were aerated with 1.5% CO 2 at a rate of 60 mL min1. Furthermore, When the cultures were aerated with 10% CO 2at a rate of 100 mL min -1, the maximum reduction amount of CO 2 was 279.7 mg L -1 h -1. A six series-wound photobioreactor was used to reduce CO 2 in crude biogas by C. vulgaris. The results revealed that the reduction amount of CO 2 was similar in the single photobioreactor and in the six series-wound photobioreactor [(205.80 ± 13.20) mg L -1 h -1]. But the reduction rate in the latter was 60.32% ± 3.73%, about six times higher than that in the former. The above results indicated that C. vulgaris had a remarkable removal effect on the CO 2 in biogas.
AB - The use of microalgae for CO 2 fixation and wastewater treatment has been one of the most important research fields of microalgal utilization. In this study, Chlorella vulgaris was cultivated in nutritious effluent from methane zymolysis, and after domestication, C. vulgaris grew well in different concentrations of biogas slurry. C. vulgaris had excellent growth and tolerance to high concentrations of CO 2, and the largest biomass productivity was obtained at the aeration of 1.5% CO 2. Therefore, the CO 2 reduction by C. vulgaris in biogas slurry was investigated. The results showed that increasing the growth rate of C. vulgaris and CO 2 concentration could enhance the amount of CO 2 reduction by C. vulgaris, and reducing the aeration also improved the removal efficiency of CO 2. The CO 2 removal efficiency reached 30.61% when the cultures were aerated with 1.5% CO 2 at a rate of 60 mL min1. Furthermore, When the cultures were aerated with 10% CO 2at a rate of 100 mL min -1, the maximum reduction amount of CO 2 was 279.7 mg L -1 h -1. A six series-wound photobioreactor was used to reduce CO 2 in crude biogas by C. vulgaris. The results revealed that the reduction amount of CO 2 was similar in the single photobioreactor and in the six series-wound photobioreactor [(205.80 ± 13.20) mg L -1 h -1]. But the reduction rate in the latter was 60.32% ± 3.73%, about six times higher than that in the former. The above results indicated that C. vulgaris had a remarkable removal effect on the CO 2 in biogas.
KW - Biogas slurry
KW - CO reduction
KW - Chlorella vulgaris
KW - Nitrogen and phosphorus removal
KW - Wastewater treatment
UR - http://www.scopus.com/inward/record.url?scp=82255182495&partnerID=8YFLogxK
U2 - 10.3724/SP.J.1145.2011.00700
DO - 10.3724/SP.J.1145.2011.00700
M3 - 文章
AN - SCOPUS:82255182495
SN - 1006-687X
VL - 17
SP - 700
EP - 705
JO - Chinese Journal of Applied and Environmental Biology
JF - Chinese Journal of Applied and Environmental Biology
IS - 5
ER -