Simultaneous treatment of municipal wastewater and biodiesel production by cultivation of Chlorella vulgaris with indigenous wastewater bacteria

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Title
Simultaneous treatment of municipal wastewater and biodiesel production by cultivation of Chlorella vulgaris with indigenous wastewater bacteria
Author(s)
B G Ryu; E J Kim; Hee-Sik Kim; J M Kim; Y E Choi; J W Yang
Bibliographic Citation
Biotechnology and Bioprocess Engineering, vol. 19, no. 2, pp. 201-210
Publication Year
2014
Abstract
This study examined the use of Chlorella vulgaris for the simultaneous bioremediation of municipal wastewater and production of biodiesel. We tested the effect of wastewater dilution on C. vulgaris growth in filtered and sterilized wastewater, sterilized wastewater, and untreated wastewater. Growth was the greatest in untreated wastewater, suggesting that certain wastewater components, such as bacteria, may promote microalgal growth. We confirmed the presence of beneficial bacteria by denaturing gradient gel electrophoresis analysis and inoculation of wastewater bacteria into microalgal cultures in artificial medium. Furthermore, we employed a semi-continuous cultivation process that successfully combined the advantages of indigenous bacteria with a high level of inoculum. Finally, cells grown in wastewater contained high levels of useful fatty acids. Collectively, our data suggest that it may be feasible to use wastewater-grown C. vulgaris biomass for simultaneous bioremediation and biodiesel production.
Keyword
biodieselChlorella vulgarisindigenous bacteriamicroalgal-bacterial interactionmunicipal wastewatersemi-continuous process
ISSN
1226-8372
Publisher
Springer
DOI
http://dx.doi.org/10.1007/s12257-013-0250-3
Type
Article
Appears in Collections:
Synthetic Biology and Bioengineering Research Institute > Cell Factory Research Center > 1. Journal Articles
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