Title:
Biomass Production and Nutrient Removal of Chlorella Zofingiensis Cultured in Artificial Wastewater in Winter
Author(s):
Zhu, L., Takala, J., Hiltunen, E., Wang, Z.
Document(s):
Paper
Poster
Abstract:
Microalgae production in wastewaters is one of the best methods to reduce excessive nutrients. Meanwhile, microalgae have also been considered as one of the most promising biofuel feedstock. Nonetheless, one of the major factors affecting algae technology application is growth performance in winter. In this present study, an integrated approach, which combined freshwater microalgae Chlorella zofingiensis cultivation in winter with artificial wastewater treatment, was investigated. Two treatments (pH regulation group and control group) were designed, and algal growth and nutrient removal were examined. In pH regulation group, acetic acid was used to regulate pH at between 6.8 and 7.2 three times per day. The results showed that the total nitrogen and total phosphate removal in pH regulation group could obviously increase from 45.2% to 73.5% and from 92.2% to 100%, respectively. The final biomass productivity of pH-regulated culture arrived at 66.94 mg L–1 day–1, which was around 3.6 times higher than that of control group (18.48 mg L–1 day–1). These findings in our study can prove that it is feasible to cultivate C. zofingiensis in wastewater in winter for biomass production and nutrient reduction by pH adjustment using acetic acid.
Keywords:
biomass, microalgae, wastewater treatment, removal
Topic:
Biomass resources
Subtopic:
Algae production systems
Event:
21st European Biomass Conference and Exhibition
Session:
1AV.1.23
Pages:
193 - 197
ISBN:
978-88-89407-53-0
Paper DOI:
10.5071/21stEUBCE2013-1AV.1.23
Price:
FREE
