Mathematical Modeling of Leachates from Ash Ponds of Thermal Power Plants |
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Authors: | Gurdeep Singh S K Gupta Ritesh Kumar M Sunderarajan |
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Institution: | (1) Centre of Mining Environment, Indian School of Mines, Dhanbad, Jharkhand, 826004, India;(2) Central Mining Research Institute, Dhanbad, Jharkhand, 826004, India |
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Abstract: | The present study describes the development of empirical models for the prediction of various trace metals i.e., Mn, Cu, Fe,
Zn and Pb found in the leachates generated from the ash ponds of various thermal power plants. The dispersion phenomenon of
these trace metals followed first order reaction rate kinetics. The empirical models for individual trace metals derived from
the lab scale models data correlate well with the real field data with regression coefficients varying from 0.93 to 0.98.
The predicted concentrations of the trace metals varied within ±3% of the observed values in the leachates generated from
the ash ponds of four thermal power plants with standard deviation varying from 0.001 to 0.032. The empirical models derived
from the study can be applied for prediction of trace metals in leachates generated from similar thermal power plants. |
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Keywords: | Fly ash Trace metals Runoff Leaching Dispersion coefficients Empirical models Ground water pollution |
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