Journal article
Dissolved Air Flotation to Control Phosphorus Release of Benthic Sediment in a Coastal Brackish Lake
ENVIRONMENTAL ENGINEERING SCIENCE, v 38(10), pp 944-954
01 Oct 2021
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
When applying the flotation process for phosphorus (P) removal in a lake, it is important to separate as much P as possible from water bodies and sediments using microbubbles. Furthermore, for removing P from the sediment, it is crucial to effectively remove readily releasable P that affects the growth of phytoplankton among various P forms. To find out the characteristics and behavior of various P forms in flotation, a series of experiments was carried out to classify and analyze various P types. This article explores how effectively the readily released P forms are separated from other P forms among various P forms in controlling P release from benthic sediment using the flotation separation process. Laboratory-scale dissolved air flotation (DAF) experiments were conducted to remove P from the water body and sediments collected from four brackish Saemangeum Lake sites. DAF could be applied owing to the improved P species composition (mobile P decrease), despite insufficient P removal efficiency in some areas. Moreover, to the best of our knowledge, this study is the first to apply DAF for the treatment of mobile P in sediments; further, the applicability of this process based on the P fractionation method is demonstrated. The findings of this study suggest that DAF removes mobile P contained in sediments more efficiently than immobile P and decreases the content of readily releasable P contained in some of the sediment particles that did not float and settle at the bottom.
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Details
- Title
- Dissolved Air Flotation to Control Phosphorus Release of Benthic Sediment in a Coastal Brackish Lake
- Publication Details
- ENVIRONMENTAL ENGINEERING SCIENCE, v 38(10), pp 944-954
- Publisher
- MARY ANN LIEBERT, INC; NEW ROCHELLE
- Number of pages
- 10
- Grant note
- This work was supported by the National Research Foundation, Republic of Korea (2019R1A2C1006441).
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Drexel University
- Web of Science ID
- WOS:000659256200001
- Scopus ID
- 2-s2.0-85117385895
- Other Identifier
- 991021860761704721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Engineering, Environmental
- Environmental Sciences