Effects of salt on the sorption of lead by marine clay in column tests

M. Ohtsubo, T. Morishita, L. Li, T. Higashi, S. Yamaoka

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

抄録

In recent years incinerated municipal solid waste has been disposed of in landfill sites near the coastal area in Japan where the underlying marine clay deposits are expected to serve as a natural clay barrier. In this study, marine clay from Japan is examined for the effects of salt on sorption of lead using column leaching tests with deionlzed water, sea water, and bottom ash leachate spiked with 100 mg/L lead as permeants, and then selective sequential extraction (SSE) was employed to assess the retention mechanism of lead onto marine clay. Lead concentration in the effluent was less than 5 MG/L throughout the column leaching tests 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 the depth for the sea water and ash leachate. The SSE Indicated that carbonate, exchangeable, and hydroxides phases are predominant for Pb retention.

本文言語英語
ホスト出版物のタイトルContaminated Sediments
ホスト出版物のサブタイトルEvaluation and Remediation Techniques
出版社American Society for Testing and Materials
ページ135-144
ページ数10
1482
ISBN(印刷版)0803134088, 9780803134089
出版ステータス出版済み - 1 1 2006
イベント3rd International Symposium on Contaminated Sediments - Shizuoka, 日本
継続期間: 5 23 20065 25 2006

出版物シリーズ

名前ASTM Special Technical Publication
番号1482
ISSN(印刷版)0066-0558

その他

その他3rd International Symposium on Contaminated Sediments
国/地域日本
CityShizuoka
Period5/23/065/25/06

All Science Journal Classification (ASJC) codes

  • 工学(全般)

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