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Sorption of Dissolved Inorganic Phosphorus to Zero Valent Iron and Black Shale as Reactive Materials  

Min, Jee-Eun (Department of Civil Engineering, Hanyang University)
Park, In-Sun (Department of Civil Engineering, Hanyang University)
Ko, Seok-Oh (Department of Civil Engineering, Kyunghee University)
Shin, Won-Sik (Department of Environmental Engineering, Kyungpook National University)
Park, Jae-Woo (Department of Civil Engineering, Hanyang University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.30, no.9, 2008 , pp. 907-912 More about this Journal
Abstract
In order to reduce the availability of dissolved inorganic phosphorus in surface water, lakes, and estuaries, black shale and zero valent iron can be used as reacitve materials. Sorption of phosphate to sampled sediment, black shale, and zero valent iron was quantitatively evaluated in this research. Effect of coexistence of calcium was also tested, since coexisting ions can enhance the precipitation of phosphate. An empirical kinetic model with fast sorption(k$_t$), slow sorption(k$_s$), and precipitation(k$_p$) was well fitted to experiment data from this research. Langmuir and Freundlich sorption isotherms were also used to evaluated phosphate maximum sorption capacity. Calcium ions at 0, 1 and 5 mM affected the precipitation kinetic coefficient in empirical kinetic model but did not have impact on the maximum sorbed concentration.
Keywords
Phosphorous; Sorption; Sediment; Zero Valent Iron; Black Shale;
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