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

  Info
Periodical
Materials Science Forum (Volumes 544-545)
Edited by
Hyungsun Kim, Junichi Hojo and Soo Wohn Lee
Pages
521-524
DOI
10.4028/www.scientific.net/MSF.544-545.521
Citation
Y. J. Park, J. J. Ko, Y. I. Kim, S. L. Yun, S. J. Kim, B. C. Lee, "Application of Gypsum Granule as a Capping Material to Reduce Phosphorus Release from Sediment of Lake Paldang", Materials Science Forum, Vols. 544-545, pp. 521-524, 2007
Online since
May 2007
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Hong Shi, Lin Kai Qi
Chapter 7: Hydrogen and Fuel Cell
Abstract:Combination natural conditions and water pollution of the Tai Lake Basin, Mainly by contrast analysis about the water pollution governance...
3251
Authors: Yu Xue Sun, Jian Bo Xie, Jing Yuan Zhao
Chapter 8: Material Processing Technology
Abstract:The geological structure is very complex in Haita Basin, due to the difficult drilling, sidewall instability phenomena happened frequently...
1749
Authors: Shu You Huang, Zhi Gang Yin, Jin Guang Zhang, Yu Shan Ren, Jing Hai Zhou
Chapter 1: Geological and Geotechnical Engineering
Abstract:On the foundation of the item that the residence flood controlled technique and standard tested and the analysis according to the formation...
279
Authors: Kwang Ik Son, Kwang Sung Woo, Yong Gu Kang, Kyung Min Kim, Gyo Chang Son
Chapter 12: Hydrology and Water Resources Engineering
Abstract:A drastic change of hydrological characteristics of a deforested basin causes severe runoff, sediment yield, and environmental contamination....
2787
Authors: Cai Ping Wu, Jun Jie Chen, Guo Ying Wu, Chao Zhu
Chapter 9: Hydraulic and Fluid Engineering
Abstract:We designed and constructed a model of Ecuador's Coca Codo Sinclair Hydropower Station, observed its intake discharge, flow pattern, flow...
2537