TY - JOUR
T1 - Relationship between selenium removal efficiency and production of lipid and hydrogen by Chlorella vulgaris
AU - Gan, Xinyu
AU - Huang, Jung Chen
AU - Zhou, Chuanqi
AU - He, Shengbing
AU - Zhou, Weili
N1 - Funding Information:
This research was supported by National Natural Science Foundation of China (No. 51479110 ) and Project of Science and Technology Applied in Construction of Anhui Province (No. 2015YF16 ). We thank Shanghai Synchrotron Radiation Facility ( SSRF ) for the beam time ( #2017-SSRF-PT-001500 ) granted for the Se speciation analysis on Beamline 14W1. We also want to express gratitude to the laboratory staff of the School of Environmental Science and Engineering at the Shanghai Jiao Tong University for their help with the Se analysis.
Funding Information:
This research was supported by National Natural Science Foundation of China (No. 51479110) and Project of Science and Technology Applied in Construction of Anhui Province (No. 2015YF16). We thank Shanghai Synchrotron Radiation Facility (SSRF) for the beam time (#2017-SSRF-PT-001500) granted for the Se speciation analysis on Beamline 14W1. We also want to express gratitude to the laboratory staff of the School of Environmental Science and Engineering at the Shanghai Jiao Tong University for their help with the Se analysis.
Publisher Copyright:
© 2018
PY - 2019/2
Y1 - 2019/2
N2 - In our previous studies, Chlorella vulgaris had proven highly efficient in removing selenium (Se) from water, while the disposal of Se containing in algal biomass was still an issue of concern. Firstly, this research suggests algal Se could be released back to water, posing risks to aquatic wildlife. Thus, we further explored the possibility of using C. vulgaris to remove Se and produce lipid and hydrogen simultaneously. Our results show the higher percentage of saturated fatty acids, especially palmitic acid, was found in the sulfur (S) deprived algae exposed to either selenate or selenite, although the highest lipid content (21.9%) was found in the selenite treated algae in full BG11 medium. In addition, compared with the Se free algae, hydrogen production rate was 2.1- and 4.3-fold higher for the selenate and selenite treated algae, respectively. Se removal efficiency achieved by the selenite treated algae through accumulation and volatilization was 2.3-fold higher than the selenate treatment under hypoxic condition with S deprived, which is in contrast to the results obtained under aerobic conditions.
AB - In our previous studies, Chlorella vulgaris had proven highly efficient in removing selenium (Se) from water, while the disposal of Se containing in algal biomass was still an issue of concern. Firstly, this research suggests algal Se could be released back to water, posing risks to aquatic wildlife. Thus, we further explored the possibility of using C. vulgaris to remove Se and produce lipid and hydrogen simultaneously. Our results show the higher percentage of saturated fatty acids, especially palmitic acid, was found in the sulfur (S) deprived algae exposed to either selenate or selenite, although the highest lipid content (21.9%) was found in the selenite treated algae in full BG11 medium. In addition, compared with the Se free algae, hydrogen production rate was 2.1- and 4.3-fold higher for the selenate and selenite treated algae, respectively. Se removal efficiency achieved by the selenite treated algae through accumulation and volatilization was 2.3-fold higher than the selenate treatment under hypoxic condition with S deprived, which is in contrast to the results obtained under aerobic conditions.
UR - http://www.scopus.com/inward/record.url?scp=85057192760&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85057192760&partnerID=8YFLogxK
U2 - 10.1016/j.chemosphere.2018.11.075
DO - 10.1016/j.chemosphere.2018.11.075
M3 - Article
C2 - 30458418
AN - SCOPUS:85057192760
SN - 0045-6535
VL - 217
SP - 825
EP - 832
JO - Chemosphere
JF - Chemosphere
ER -