Effects of Salt on the Hydraulic Conductivity and Lead Sorption of Marine Clay - Collections

＜departmental bulletin paper＞
Effects of Salt on the Hydraulic Conductivity and Lead Sorption of Marine Clay

Creator	Creator Name 森下, 智貴 Morishita, Tomotaka Affiliation Affiliation Name 株式会社ウエスコ Uesuko Co.Ltd.
	Author PID K001561 Creator Name 大坪, 政美 Ohtsubo, Masami Affiliation Affiliation Name 九州大学大学院農学研究院生産環境科学部門地域環境科学講座土環境学研究室 Laboratory of Environmental Soil Engineering, Division of Regional Environment Science, Department of Bioproduction Environmental Sciences, Faculty of Agriculture, Kyushu University
	Author PID K002241 Creator Name 東, 孝寛 Higashi, Takahiro Affiliation Affiliation Name 九州大学大学院農学研究院生産環境科学部門地域環境科学講座土環境学研究室 Laboratory of Environmental Soil Engineering, Division of Regional Environment Science, Department of Bioproduction Environmental Sciences, Faculty of Agriculture, Kyushu University
	Creator Name Loretta, Li Affiliation Affiliation Name Department of Civil Engineering, The University of British Columbia, Canada
Language	Japanese
Publisher	九州大学大学院農学研究院
Publisher	Faculty of Agriculture, Kyushu University
Date	2009-02-27
Source Title	Science bulletin of the Faculty of Agriculture, Kyushu University
Vol	64
Issue	1
First Page	55
Last Page	61
Publication Type	Version of Record
Access Rights	open access
JaLC DOI	https://doi.org/10.15017/13907

File	FileType	Size	Views	Description
p055	pdf	693 KB	250

PISSN	1347-0159
NCID	AA11577672
Record ID	13907
Peer-Reviewed	Unrefereed
Subject Terms	Geo-Environment Science
Subject Terms	地水環境学
Notes	In recent years incinerated municipal solid waste has been disposed in landfill sites near coastal area in Japan where underlying marine clay deposits are expected to serve as a natural clay barrier. In this study marine clay is examined for the effects of salt on permeability and the sorption of lead using column leaching tests with deionized water, sea water and bottom ash leachate spiked with 100mg/L lead as permeants, and then selective sequential extraction (SSE) was employed to assess the retention mechanism of lead onto marine clay. The hydraulic conductivity of column clay was 2.5 to 7 times higher for the sea water and the ash leachate than for the deionized water. Lead concentration in the effluent was less than 6mg/L throughout the column leaching test with the deionized water, whereas it exceeded Pb concentration in influent below one pore volume leaching for the sea water. Lead in pore water accumulated in the top layer of the column soil for the deionized water whereas it was distributed throughout depth for the sea water and ash leachate. The SSE indicated that carbonate, exchangeable and hydroxides phases are predominant for Pb retention.
Created Date	2009.04.22
Modified Date	2022.11.11