Journal article
Two-stage heterotrophic and phototrophic culture strategy for algal biomass and lipid production
Bioresource technology, Vol.103(1), pp.484-488
01/2012
Handle:
https://hdl.handle.net/2376/108448
PMID: 22023968
Abstract
► Develop a novel two-stage heterotrophic and phototrophic algae culture strategy. ► Investigate the growth kinetics of phototrophic and heterotrophic cultures. ► Reduce cost by using food waste and wastewater. ► Study performances of heterotrophic algal seed under phototrophic conditions. ► Control contamination with large volume inoculation of heterotrophic seeds.
A two-stage heterotrophic and phototrophic culture strategy for algal biomass and lipid production was studied, wherein high density heterotrophic cultures of Chlorellasorokiniana serve as seed for subsequent phototrophic growth. The data showed growth rate, cell density and productivity of heterotrophic C.sorokiniana were 3.0, 3.3 and 7.4 times higher than phototrophic counterpart, respectively. Hetero- and phototrophic algal seeds had similar biomass/lipid production and fatty acid profile when inoculated into phototrophic culture system. To expand the application, food waste and wastewater were tested as feedstock for heterotrophic growth, and supported cell growth successfully. These results demonstrated the advantages of using heterotrophic algae cells as seeds for open algae culture system. Additionally, high inoculation rate of heterotrophic algal seed can be utilized as an effective method for contamination control. This two-stage heterotrophic phototrophic process is promising to provide a more efficient way for large scale production of algal biomass and biofuels.
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Details
- Title
- Two-stage heterotrophic and phototrophic culture strategy for algal biomass and lipid production
- Creators
- Yubin ZhengZhanyou ChiBen LuckerShulin Chen
- Publication Details
- Bioresource technology, Vol.103(1), pp.484-488
- Academic Unit
- Biological Systems Engineering, Department of
- Publisher
- Elsevier Ltd
- Identifiers
- 99900547115601842
- Language
- English
- Resource Type
- Journal article