Numerical investigation into the restoration of ocean environments using steelmaking slag

Hidemi Mutsuda*, Yasuhito Miyata, Yasuaki Doi, Shade Rahmawati

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Steelmaking slag has been utilized in shore protection and to improve ocean environments of sea bottom sediments in semi-enclosed areas and coastal regions. This is achieved by reducing dissolved sulphide concentration. In this study, a numerical model is proposed and developed using a Eulerian-Lagrangian model coupled with an ocean circulation model to compute advection-diffusion of dissolved sulphides and fluid-particle interactions between ocean circulation and steelmaking slag. We applied the model to the Fukuyama inner harbour in the Seto Inland Sea and Tokyo Bay and compared our results with field data. The numerical results show good agreement with the field results. We demonstrate that steelmaking slag can control advection-diffusion with regard to concentration of hydrogen sulphide. The steelmaking slag could be a useful material in restoration of ocean environments at enclosed sea areas.

Original languageEnglish
Pages (from-to)428-440
Number of pages13
JournalMarine Pollution Bulletin
Publication statusPublished - Jun 2018


  • Eulerian-Lagrangian model
  • Ocean circulation model
  • Ocean environment
  • Steelmaking slag
  • Sulphide reduction


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