Permeability characteristics of lake kojima sediment and their improvement

Ishiguro Munehide, Iwamoto Ryouichi, Hamabe Akiko, Ishida Tomoyuki, Akae Takeo

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

As lake sediments are one of the causes of eutrophication, their removal and effective use has been considered. When they are used as soil in a land, proper permeability is required. However, soil permeability has not completely been understood due to diversity of clays and organic compounds. We clarified permeability characteristics of Lake Kojima sediment, nonswelling clayey soil, by measuring saturated hydraulic conductivity (K). A decrease in K during percolation of dilute electrolyte solution was small when Ca was adsorbed by the soil; K became 3.4×10-5 cm/s at pH 5, 2.9×10 -5 cm/s at pH 7, 7.5×10-6 cm/s at pH 9, and 2.3×10-5 cm/s at pH 11 after pure water percolation. Although the permeability tended to decrease as pH increased, K at pH 11 became larger than that at pH 9 due to chemical reaction between soil particles and Ca. On the other hand, when Na was adsorbed, K drastically decreased with pH increase; K became 7.1×10-6cm/s at pH 5, 3.1×10-6 cm/s at pH 7, 1.7×10-7 cm/s at pH 9, and 1.3×10-7 cm/s at pH 11 after pure water percolation. The obtained results could be explained qualitatively by the theory. Next, an improvement method of permeability of Lake Kojima sediment with hydrated lime and gypsum were investigated. Three application methods were compared in the saturated hydraulic conductivity experiment; mixing, surface distribution and solution infiltration. Hydrated lime application with mixing maintained high hydraulic conductivity. The soil structure was supposed to be stabilized by chemical reaction between soil and heterogeneously distributed hydrated lime. On the other hand, gypsum application with solution infiltration maintained the same hydraulic conductivity as that of hydrated lime application with mixing. In that case, electrostatic adsorption of Ca was considered to generate flocculation and kept high permeability.

Original languageEnglish
JournalJournal of ASTM International
Volume3
Issue number6
Publication statusPublished - 2006

Fingerprint

Lakes
Permeability
Sediments
Hydrated lime
Soils
Hydraulic conductivity
Soil
Calcium Sulfate
Gypsum
Infiltration
Chemical reactions
Eutrophication
Water
Flocculation
Organic compounds
Electrolytes
Electrostatics
Clay
Adsorption
Static Electricity

Keywords

  • Ca
  • Na
  • PH
  • Saturated hydraulic conductivity
  • Sediment

ASJC Scopus subject areas

  • Engineering(all)
  • Materials Science(all)
  • Nuclear Energy and Engineering
  • Environmental Engineering
  • Public Health, Environmental and Occupational Health

Cite this

Munehide, I., Ryouichi, I., Akiko, H., Tomoyuki, I., & Takeo, A. (2006). Permeability characteristics of lake kojima sediment and their improvement. Journal of ASTM International, 3(6).

Permeability characteristics of lake kojima sediment and their improvement. / Munehide, Ishiguro; Ryouichi, Iwamoto; Akiko, Hamabe; Tomoyuki, Ishida; Takeo, Akae.

In: Journal of ASTM International, Vol. 3, No. 6, 2006.

Research output: Contribution to journalArticle

Munehide, I, Ryouichi, I, Akiko, H, Tomoyuki, I & Takeo, A 2006, 'Permeability characteristics of lake kojima sediment and their improvement', Journal of ASTM International, vol. 3, no. 6.
Munehide, Ishiguro ; Ryouichi, Iwamoto ; Akiko, Hamabe ; Tomoyuki, Ishida ; Takeo, Akae. / Permeability characteristics of lake kojima sediment and their improvement. In: Journal of ASTM International. 2006 ; Vol. 3, No. 6.
@article{0ed85e3cfcf84a74b272f6cecfe75613,
title = "Permeability characteristics of lake kojima sediment and their improvement",
abstract = "As lake sediments are one of the causes of eutrophication, their removal and effective use has been considered. When they are used as soil in a land, proper permeability is required. However, soil permeability has not completely been understood due to diversity of clays and organic compounds. We clarified permeability characteristics of Lake Kojima sediment, nonswelling clayey soil, by measuring saturated hydraulic conductivity (K). A decrease in K during percolation of dilute electrolyte solution was small when Ca was adsorbed by the soil; K became 3.4×10-5 cm/s at pH 5, 2.9×10 -5 cm/s at pH 7, 7.5×10-6 cm/s at pH 9, and 2.3×10-5 cm/s at pH 11 after pure water percolation. Although the permeability tended to decrease as pH increased, K at pH 11 became larger than that at pH 9 due to chemical reaction between soil particles and Ca. On the other hand, when Na was adsorbed, K drastically decreased with pH increase; K became 7.1×10-6cm/s at pH 5, 3.1×10-6 cm/s at pH 7, 1.7×10-7 cm/s at pH 9, and 1.3×10-7 cm/s at pH 11 after pure water percolation. The obtained results could be explained qualitatively by the theory. Next, an improvement method of permeability of Lake Kojima sediment with hydrated lime and gypsum were investigated. Three application methods were compared in the saturated hydraulic conductivity experiment; mixing, surface distribution and solution infiltration. Hydrated lime application with mixing maintained high hydraulic conductivity. The soil structure was supposed to be stabilized by chemical reaction between soil and heterogeneously distributed hydrated lime. On the other hand, gypsum application with solution infiltration maintained the same hydraulic conductivity as that of hydrated lime application with mixing. In that case, electrostatic adsorption of Ca was considered to generate flocculation and kept high permeability.",
keywords = "Ca, Na, PH, Saturated hydraulic conductivity, Sediment",
author = "Ishiguro Munehide and Iwamoto Ryouichi and Hamabe Akiko and Ishida Tomoyuki and Akae Takeo",
year = "2006",
language = "English",
volume = "3",
journal = "Journal of ASTM International",
issn = "1546-962X",
publisher = "American Society for Testing and Materials",
number = "6",

}

TY - JOUR

T1 - Permeability characteristics of lake kojima sediment and their improvement

AU - Munehide, Ishiguro

AU - Ryouichi, Iwamoto

AU - Akiko, Hamabe

AU - Tomoyuki, Ishida

AU - Takeo, Akae

PY - 2006

Y1 - 2006

N2 - As lake sediments are one of the causes of eutrophication, their removal and effective use has been considered. When they are used as soil in a land, proper permeability is required. However, soil permeability has not completely been understood due to diversity of clays and organic compounds. We clarified permeability characteristics of Lake Kojima sediment, nonswelling clayey soil, by measuring saturated hydraulic conductivity (K). A decrease in K during percolation of dilute electrolyte solution was small when Ca was adsorbed by the soil; K became 3.4×10-5 cm/s at pH 5, 2.9×10 -5 cm/s at pH 7, 7.5×10-6 cm/s at pH 9, and 2.3×10-5 cm/s at pH 11 after pure water percolation. Although the permeability tended to decrease as pH increased, K at pH 11 became larger than that at pH 9 due to chemical reaction between soil particles and Ca. On the other hand, when Na was adsorbed, K drastically decreased with pH increase; K became 7.1×10-6cm/s at pH 5, 3.1×10-6 cm/s at pH 7, 1.7×10-7 cm/s at pH 9, and 1.3×10-7 cm/s at pH 11 after pure water percolation. The obtained results could be explained qualitatively by the theory. Next, an improvement method of permeability of Lake Kojima sediment with hydrated lime and gypsum were investigated. Three application methods were compared in the saturated hydraulic conductivity experiment; mixing, surface distribution and solution infiltration. Hydrated lime application with mixing maintained high hydraulic conductivity. The soil structure was supposed to be stabilized by chemical reaction between soil and heterogeneously distributed hydrated lime. On the other hand, gypsum application with solution infiltration maintained the same hydraulic conductivity as that of hydrated lime application with mixing. In that case, electrostatic adsorption of Ca was considered to generate flocculation and kept high permeability.

AB - As lake sediments are one of the causes of eutrophication, their removal and effective use has been considered. When they are used as soil in a land, proper permeability is required. However, soil permeability has not completely been understood due to diversity of clays and organic compounds. We clarified permeability characteristics of Lake Kojima sediment, nonswelling clayey soil, by measuring saturated hydraulic conductivity (K). A decrease in K during percolation of dilute electrolyte solution was small when Ca was adsorbed by the soil; K became 3.4×10-5 cm/s at pH 5, 2.9×10 -5 cm/s at pH 7, 7.5×10-6 cm/s at pH 9, and 2.3×10-5 cm/s at pH 11 after pure water percolation. Although the permeability tended to decrease as pH increased, K at pH 11 became larger than that at pH 9 due to chemical reaction between soil particles and Ca. On the other hand, when Na was adsorbed, K drastically decreased with pH increase; K became 7.1×10-6cm/s at pH 5, 3.1×10-6 cm/s at pH 7, 1.7×10-7 cm/s at pH 9, and 1.3×10-7 cm/s at pH 11 after pure water percolation. The obtained results could be explained qualitatively by the theory. Next, an improvement method of permeability of Lake Kojima sediment with hydrated lime and gypsum were investigated. Three application methods were compared in the saturated hydraulic conductivity experiment; mixing, surface distribution and solution infiltration. Hydrated lime application with mixing maintained high hydraulic conductivity. The soil structure was supposed to be stabilized by chemical reaction between soil and heterogeneously distributed hydrated lime. On the other hand, gypsum application with solution infiltration maintained the same hydraulic conductivity as that of hydrated lime application with mixing. In that case, electrostatic adsorption of Ca was considered to generate flocculation and kept high permeability.

KW - Ca

KW - Na

KW - PH

KW - Saturated hydraulic conductivity

KW - Sediment

UR - http://www.scopus.com/inward/record.url?scp=33746882484&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33746882484&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:33746882484

VL - 3

JO - Journal of ASTM International

JF - Journal of ASTM International

SN - 1546-962X

IS - 6

ER -