Methylene blue transport in a sand-illite mixture and its implications for contaminant transport

Seokjae Lee, Subin Yang, Dongjoon Lee, Hangseok Choi, Jongmuk Won

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Understanding contaminant transport in clay-containing soils is critical for accurate prediction of the travel distances of contaminants and for the design and implementation of corresponding remediation plans. This study examined the breakthrough behavior of methylene blue (MB) through sand-illite mixtures using laboratory soil-column experiments at five inlet concentrations, three flow rates, and five illite contents. Kinetic and equilibrium adsorption tests were performed to evaluate the maximum adsorption capacities of the sand and illite used in the soil-column experiments. In addition, the bed efficiency, MB saturation, and adsorption rate were calculated to quantitatively describe the observed breakthrough curves. The observed breakthrough curves, bed efficiencies, MB saturations, and adsorption rates in this study demonstrated the presence of a threshold illite content of ~10% for the adsorption efficiency of contaminants. This implies the need to evaluate the threshold clay content for accurate predictions of contaminant transport through gap-graded clay-containing soils.

Translated title of the contribution모래-일라이트 혼합토에서의 메틸렌 블루 이동 및 이의 오염물질 이동 현상에 의의
Original languageEnglish
Pages (from-to)1245-1257
Number of pages13
JournalHydrogeology Journal
Volume31
Issue number5
DOIs
Publication statusPublished - 2023 Aug

Bibliographical note

Publisher Copyright:
© 2023, The Author(s), under exclusive licence to International Association of Hydrogeologists.

Keywords

  • Contaminant transport
  • Groundwater flow
  • Kinetic test
  • Laboratory experiments
  • Sand-clay mixture

ASJC Scopus subject areas

  • Water Science and Technology
  • Earth and Planetary Sciences (miscellaneous)

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