期刊
JOURNAL OF MICROBIOLOGY AND BIOTECHNOLOGY
卷 24, 期 8, 页码 1123-1132出版社
KOREAN SOC MICROBIOLOGY & BIOTECHNOLOGY
DOI: 10.4014/jmb.1312.12057
关键词
Algal consortium; high rate algal pond; municipal wastewater; Chlorella sp.; Scenedesmus sp.
资金
- Advanced Biomass R&D Center (ABC) of Global Frontier Project - Korea Government Ministry of Science, ICT and Future Planning [ABC-2011-0031351]
- Energy Efficiency & Resources of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant - Korea Government Ministry of Trade, Industry Energy [2012T100201665]
- KRIBB (Korea Research Institute of Bioscience and Biotechnology) Research Initiative Program
- National Research Foundation of Korea [2010-0029723] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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 (HEAP). 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 (2 day 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.
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