造粒石粉を用いた沿岸底質環境改善材開発のための基礎的研究 : 栄養塩溶出試験および Skeletonema costatum の増殖試験 A Preliminary Study of Development for Coastal Sediment Amendment with Granulated Stone Powder : Nutrient Elution Test and Growth Experiment of Skeletonema costatum
The purpose of this preliminary study is to characterize stone powder granulated with cement for the remediation of an organically rich sediment and the control of nutrient balance in a water column. The material used contained SiO<sub>2</sub>, Al<sub>2</sub>O<sub>3</sub>, K<sub>2</sub>O, CaO, CO<sub>3</sub>, Fe<sub>2</sub>O<sub>3</sub>, MgO, TiO<sub>2</sub> and trace elements with quartz and aluminum silicate as the main phases. An increase in the pH of seawater due to cement was observed with the material addition, which was effective for the remediation of the acid-rich sediment in coastal seas. Phosphate and silicate were released into seawater and the growth of <i>S. costatum</i> was maintained with the material addition. Thus, results of this preliminary study support the notion that the application of granulated stone powder may have potential advantages for the remediation of the acid-rich sediment and the control of the balance of nutrients in seawater.
- 水環境学会誌 = Journal of Japan Society on Water Environment
水環境学会誌 = Journal of Japan Society on Water Environment 31(2), 93-99, 2008-02-10
Japan Society on Water Environment