In situ Fenton remediation for diesel contaminated clayey zone assisted by thermal plasma blasting: Synergism and cost estimation

Kien Tiek Wong, Seok Byum Jang, Choe Earn Choong, Cha won Kang, Geun Chun Lee, Jae Yong Song, Yeomin Yoon, Min Jang

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

Thermal plasma blasting technology has been widely applied for rock cracking. Though, the application for environmental remediation has yet to be reported. Since the delivery of remediation agents into diesel contaminated clayey zones are exceptionally challenging, herein, this study explores the effect of pilot-scale thermal plasma blasting for soil fracturing and concurrently dispersing the Fenton reagent into the diesel contaminated silty soils. Six times plasma blasting with sole H2O2 at 20 kV had the highest degradation of diesel (>97%) with an equilibrium time of 3 h, and the final diesel concentration was below the South Korean regulated health standard (500 mg kg−1). This study highlights plasma blasting able to deliver H2O2 instantaneously and homogeneously into contaminated zone while promoting Fenton reaction synergism (fsyn: 2.04) between H2O2 and ≡Fe surface for effective remediation. Furthermore, the remediation cost (USD 4 metric ton−1) is much lower than most reported in situ technologies.

Original languageEnglish
Article number131574
JournalChemosphere
Volume286
DOIs
StatePublished - Jan 2022

Bibliographical note

Publisher Copyright:
© 2021 Elsevier Ltd

Keywords

  • Diesel
  • Fenton reaction
  • In situ treatment
  • Silty clay
  • Thermal plasma blasting

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