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Application of Gypsum Granule as a Capping Material to Reduce Phosphorus Release from Sediment of Lake Paldang

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Abstract:

In this study, the capping effects of granular gypsum (Ca2SO4·2H2O) and sand on sediment and water column were evaluated in in-situ experiments in Lake Paldang. The results indicate that capping treatment is very effective for the restoration of eutrophied lake. It was demonstrated that phosphorus, T-N and T-P concentration in the water column of treated basin was relatively lower than control basin. As a consequence of reduction of nutrient concentration by capping treatment, chlorophyll-a concentration in treated basin was considerably lower than control basin. The chlorophyll-a concentration in water column could be reduced to 52% and 25% as compared to control basin, respectively, by the capping treatment with gypsum and sand. From the experimental results, it was concluded that gypsum was more effective capping material than sand for controlling of nutrients and chlorophyll-a. In addition, capping with gypsum bring calcium cation into sediment, which offer more site for phosphorus to bind. In case of the capping with gypsum, apatite P composition, mainly consist of Ca boun P, in the sediment increased from 24% to 43% for the two month of operation.

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Periodical:

Materials Science Forum (Volumes 544-545)

Pages:

521-524

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.544-545.521

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Online since:

May 2007

Authors:

Yong Jin Park, Jae Jung Ko, Young Im Kim, Sang Leen Yun, So Jung Kim, Byung Cheol Lee

Keywords:

Capping Material, Chlorophyll-a, Gypsum, Lake, Nutrient, Restoration, Sand, Sediment

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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References

[1] V. P. Salonen and E. Varjo: Gypsum treatment as a restoration method for sediments of eutrophied lakes-experiments from southern Finland, Environ. Geology, Vol. 39 (2000), p.353.

DOI: 10.1007/s002540050014

Google Scholar

[2] S. Wang, X. Jin, H. Zhao and F. Wu: Phosphorus fractions and its release in the sediments from the shallow lakes in the middle and lower reaches of Yangtze River area in China, Colloids and surfaces, Vol. 273 (2006), p.109.

DOI: 10.1016/j.colsurfa.2005.08.015

Google Scholar

[3] R. K. Mohan, M. P. Brown and C. R. Barnes: Design criteria and theoretical basis for capping contaminated marine sediment, Applied ocean Res., Vol. 22 (2000), p.85.

DOI: 10.1016/s0141-1187(00)00003-1

Google Scholar

[4] APHA, AWWA, WEF: Standard Methods for the Examination of Water and Wastewater, 20 th edition, Americal Public Health Association, Washington, D.C. (1998).

Google Scholar

[5] A. H. M. Hieltjes and L. Liklema: Fractionation of inorganic phosphates in calcareous sediments, J. Environ Qual., vol. 9 (1980) p.405.

DOI: 10.2134/jeq1980.00472425000900030015x

Google Scholar