Chromium transport modeling in tannery effluent from a surface water body to groundwater regime: Case study in Kodaganar Basin

J. Colins Johnny, M. C. Sashikkumar, J. Rajesh Banu, Gopalakrishnan Kumar

Research output: Contribution to journalArticlepeer-review

Abstract

Groundwater is the main source of water supply to the public in the upper Kodaganar basin in the state of Tamilnadu in India. Wastewater from the tannery industries of the basin is discharged into Sengulam Lake. For this study, a model was developed to simulate the magnitude and direction of groundwater flow in the aquifer. This model was extended as a chromium-transport model that demonstrated the transport of hexavalent chromium from the lake to the aquifer. The chromium concentration in the lake was found to be 4 mg/L. The chromium concentration in the groundwater of the nearby aquifer ranged from 0 to 2 mg/L. The migration behavior of the chromium was analyzed by the developed contaminant-transport model. The spatial extent of the damage caused in the aquifer by chromium contamination was demarcated by modeling the velocity vectors. It was estimated that the groundwater in an area of about 10 km2 was polluted by chromium. The average velocity of groundwater was estimated to be 1.9 m/day. The time taken for the chromium particles to reach the Kodaganar River was estimated to be 12 years.

Original languageEnglish
Article number0000577
JournalJournal of Hazardous, Toxic, and Radioactive Waste
Volume25
Issue number2
DOIs
Publication statusPublished - 2021 Apr 1

Bibliographical note

Publisher Copyright:
© 2020 American Society of Civil Engineers.

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Water Science and Technology
  • Geotechnical Engineering and Engineering Geology
  • Waste Management and Disposal

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