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Related Experiment Videos

Leaching behaviour of coal-ash: a case study.

M R Hajarnavis1, A D Bhide

  • 1NEERI, Nagpur.

Indian Journal of Environmental Health
|November 6, 2004
PubMed
Summary

Rainwater leaching trace elements from fly ash dumps contaminates groundwater. This study simulated disposal sites to assess groundwater pollution, revealing varied metal reactions with soil and water.

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Area of Science:

  • Environmental Science
  • Geochemistry
  • Soil Science

Background:

  • Fly ash deposition on land can lead to groundwater contamination.
  • Leaching of trace elements from fly ash by rainwater is a significant environmental concern.
  • Understanding the interaction between fly ash, soil, and water is crucial for assessing pollution risks.

Purpose of the Study:

  • To assess groundwater pollution from fly ash deposition.
  • To simulate disposal site conditions to study leaching phenomena.
  • To analyze the behavior of trace metals and physicochemical parameters in fly ash and soil.

Main Methods:

  • Utilized two lysimeters with different soil types to simulate disposal sites.
  • Collected and analyzed leachate daily to monitor leaching.
  • Measured trace metal and physicochemical parameters of fly ash and soil before and after the experiment.

Main Results:

  • Trace elements leach from fly ash dumps into the subsoil layer via rainwater.
  • Groundwater contamination is a direct consequence of fly ash deposition.
  • Metals exhibit different responses when interacting with soil and water at dumping sites.

Conclusions:

  • Fly ash leaching poses a significant risk to groundwater quality.
  • Simulated landfill conditions effectively demonstrated the leaching process.
  • The differential reactivity of metals in the environment requires further investigation for effective management strategies.

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