Minimizing phosphorus release from newly flooded organic soils amended with calcium silicate slag: a pilot study

Authors: Chimney, Michael¹; Wan, Yongshan; Matichenkov, Vladimir; Calvert, David

Source: Wetlands Ecology and Management, Volume 15, Number 5, October 2007 , pp. 385-390(6)

Publisher: Springer

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Abstract:

A pilot study was conducted using commercially available forms of calcium silicate (CaSiO₃) slag as a soil amendment to reduce phosphorus (P) release from an organic soil after flooding. Broadcasting CaSiO₃slag on top of the soil reduced the flux of soil P up to 84% compared to an unamended soil control. However, incorporation of CaSiO₃ slag into the soil was only minimally effective at reducing P release. These materials have a potential use in the construction of treatment wetlands in south Florida. Further work is needed to better define reaction mechanisms, investigate the long-term treatment efficacy of these materials and address other environmental questions concerning their use.

Keywords: Calcium silicate slag; Soil phosphorus flux; Soil amendments; Treatment wetlands

Document Type: Research article

DOI: 10.1007/s11273-007-9037-7

Affiliations: 1: Email: mchimney@sfwmd.gov

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