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Waste Management & Research, Vol. 12, No. 4, 339-350 (1994)
DOI: 10.1177/0734242X9401200406

Analytical Modelling of Inorganic Contaminants in Leachate

M. Talha Gönüllü

Yildiz Technical University, Civil Engineering Faculty, Environmental Engineering Department, Yildiz, Istanbul 80750, Turkey

The need for estimating the contaminant concentration of leachates from landfills has rapidly become important because of the increased demand for landfilling, causing serious pollution of water bodies in some places. The present study examines the movement of inorganies from waste into leachate in the course of time. Inorganics are discussed in two groups according to their solubilities in water. The first group of inorganics dissolve immediately in water (i.e. at time t = 0). The inorganic compounds of the second group transfer into water over a longer period of time. The mathematical model is based on a porous and well-mixed medium, and on assumptions of dissolution/dilution and mass transfer according to their infiltration rate. The agreement between theoretical and experimental results from laboratory and literature are investigated. After experimental verification, some mathematical relationships to predict the mass transfer coefficient (k) and maximum concentration (C max) were also investigated.

Key Words: Landfills • leachate • mathematical modelling • inorganics • chloride • sodium • potassium • total solids • seasonal wastes.


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