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http://dx.doi.org/10.15433/ksmb.2018.10.2.091

Development of Improving Water Quality in Eutrophic Lake Using Microalgal Cultivation  

Kim, Ki-Hyun (National Marine Bioenergy R&D Consortium, Inha University)
Kang, Sung-Mo (National Marine Bioenergy R&D Consortium, Inha University)
Cho, Yonghee (National Marine Bioenergy R&D Consortium, Inha University)
Jeon, Sanghyun (National Marine Bioenergy R&D Consortium, Inha University)
Kim, Jun-Ho (National Marine Bioenergy R&D Consortium, Inha University)
Park, Hanwool (National Marine Bioenergy R&D Consortium, Inha University)
Lee, Yunwoo (National Marine Bioenergy R&D Consortium, Inha University)
Jeong, Jeongho (National Marine Bioenergy R&D Consortium, Inha University)
Lim, Sang-Min (National Marine Bioenergy R&D Consortium, Inha University)
Lee, Choul-Gyun (National Marine Bioenergy R&D Consortium, Inha University)
Publication Information
Journal of Marine Bioscience and Biotechnology / v.10, no.2, 2018 , pp. 91-96 More about this Journal
Abstract
There are many eutrophic lakes by point and non-point pollution sources such as in dustrial waste water, domestic raw sewage, and mucks. The eutrophic lakes not only cause algal blooms but also destroy the ecosystem in the lakes due to high nutrient concentrations. The purpose of this study was to improve water quality in eutrophic lakes by cultivating microalgae using photobioreactors (PBRs) with selectively permeable mesh (SPM), supplying nutrients in the lake and inhibiting cell leakage by diffusion and water permeability. Chlorella vulgaris, was cultivated using PBRs with SPM installed in Inkyung Lake located in Inha university, Incheon, Korea. When cultivating C. vulgaris, $8.3g/m^2/day$ of average biomass productivity was obtained at 3 days. Furthermore, concentrations of total nitrogen and phosphorus were reduced by 35.7% and 84.2%, respectively, compared to initial condition and water quality in eutrophic lake was improved to oligotrophic environment. These results suggest that microalgal cultivation using PBRs with SPM in the lake could produce microalgal biomass as well as improve water quality by decreasing nutrient concentrations.
Keywords
Eutrophication; Algal bloom; Microalgae; Photobioreactor; Chlorella vulgaris;
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