Abstract
This study developed a high-efficiency algal biofilm photobioreactor for microalgae by designing a special array of curtain membrane components. This paper also discusses the growth and nutrient composition of Chlorella vulgaris, and hog manure wastewater utilization and purification. It was found that after about 5 days of culture, the biomass of C. vulgaris on the membrane could reach as high as 7.37 g/m2 and the algae were easily harvested by mechanical scraping. The lipid content of C. vulgaris on the membrane structure was 10.17% while the lipid content of the algae in suspension was 14.29%. The light intensity showed a significant effect on the fatty acid composition. The C. vulgaris grew very well, and achieved deep purification of the hog manure wastewater; the COD, TP, TN, and NH4+-N removal rates reached 95.67%, 64.40%, 69.55%, and 91.24%, respectively.
Original language | English (US) |
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Article number | 121925 |
Journal | Bioresource Technology |
Volume | 292 |
DOIs | |
State | Published - Nov 2019 |
Bibliographical note
Funding Information:The authors are grateful for financial support of the National Natural Science Foundation of China (Grant No. 21767017 , 21878139 ), of the Youth Project of Jiangxi Provincial Department of Education (Grant No. GJJ160189 ), of the Science and Technology Project of Jiangxi Provincial Department of Science and Technology (Grant No. 20171BBF60024 ), and of the Science and Technology Project of Jiangxi Provincial Department of Education (Grant No. KJLD 12011 ).
Publisher Copyright:
© 2019 Elsevier Ltd
Keywords
- Algal biofilm photobioreactor
- CO biofixation
- Chlorella vulgaris
- Hog manure wastewater
- Treatment