Effect of Steel Slag to Improve Soil Quality of Tsunami-Impacted Land while Reducing the Risk of Heavy Metal Bioaccumulation

Marco Antonio León-Romero, Paula Cecilia Soto-Ríos, Munehiro Nomura, Osamu Nishimura

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

After the tsunami caused by the Great East Japan Earthquake, marine sediment was taken from the sea bottom and deposited over local agricultural fields. The marine sediment already contained an unknown amount of heavy metals, due to anthropogenic activities prior to the tsunami, which might affect plants, animals, and humans. Furthermore, soil salinity in tsunami-inundated land greatly increased. Three different amounts of steel slag were employed as pretreatment agent in order to improve agricultural soil quality. The soil samples treated with 2% of steel slag present a remarkable increase of A. thaliana biomass production with low BCF and TF values for most of the heavy metals. It was concluded that steel slag pretreatment used in the tsunami-inundated agricultural lands produced a noteworthy improvement in soil quality which lead to a positive stimulative effect on plant growth, and the slag addition treatment proved to be a promising treatment that might be used for phytostabilization of slightly contaminated soils.

Original languageEnglish
Article number12
JournalWater, Air, and Soil Pollution
Volume229
Issue number1
DOIs
Publication statusPublished - 2018 Jan 1

Keywords

  • Arabidopsis thaliana
  • Heavy metals
  • Soil rectification
  • Steel slag
  • Tsunami sediment

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Ecological Modelling
  • Water Science and Technology
  • Pollution

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