Nutrient removal and biofuel production in high rate algal pond using real municipal wastewater

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Title
Nutrient removal and biofuel production in high rate algal pond using real municipal wastewater
Author(s)
Byung-Hyuk Kim; Kang Zion; R Ramanan; Jong-Eun Choi; Dae Hyun ChoHee-Mock OhHee-Sik Kim
Bibliographic Citation
Journal of Microbiology and Biotechnology, vol. 24, no. 8, pp. 1123-1132
Publication Year
2014
Abstract
This study evaluated the growth and nutrient removal ability of an indigenous algal consortium on real untreated municipal wastewater in a high rate algal pond (HRAP). The HRAP was operated semicontinuously under different hydraulic retention times (HRT: 2, 4, 6, and 8 days). The average removal efficiencies of chemical oxygen demand, and total nitrogen and phosphate of real municipal wastewater were maintained at 85.44 ± 5.10%, 92.74 ± 5.82%, and 82.85 ± 8.63%, respectively, in 2 day HRT. Algae dominated the consortium and showed high settling efficiency (99%), and biomass and lipid productivity of 0.500 ± 0.03 g/l/day and 0.103 ± 0.0083 g/l/day (2day HRT), respectively. Fatty acid methyl ester analysis revealed a predominance of palmitate (C16:0), palmitoleate (C16:1), linoleate (C18:2), and linolenate (C18:3). Microalgal diversity analyses determined the presence of Chlorella, Scenedesmus, and Stigeoclonium as the dominant microalgae. The algal consortium provides significant value not only in terms of energy savings and nutrient removal but also because of its bioenergy potential as indicated by the lipid content (20-23%) and FAME profiling. ⓒ 2014 by The Korean Society for Microbiology and Biotechnology.
Keyword
Algal consortiumChlorella sp.High rate algal pondMunicipal wastewaterScenedesmus sp
ISSN
1017-7825
Publisher
South Korea
DOI
http://dx.doi.org/10.4014/jmb.1312.12057
Type
Article
Appears in Collections:
Division of Biomaterials Research > Cell Factory Research Center > 1. Journal Articles
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