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Journal of Biological Sciences

Year: 2010 | Volume: 10 | Issue: 2 | Page No.: 107-111
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Authors

M.A. Abdoli

Hans Gunter Ramke

Hossein Ghiasinejad

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Research Article

Direct Evaporation from the Waste Body and its Influence on Leachate Generation in Landfills in Arid Areas

M.A. Abdoli, Hans Gunter Ramke and Hossein Ghiasinejad
In this study, a newly established test was performed to determine a correlation between pan evaporation and waste surface evaporation. A container with diameter of 120 cm and height of 60 cm was used for determining the evaporation in field conditions in Kahrizak Landfill in Tehran based on the container weight loss. A class and a evaporation pan was also installed in the vicinity to determine evaporation from water surface. A correlation could be seen in the results and also a certain diminishing by time pattern in evaporation from the waste was also observed. A governing equation was also provided to calculate direct evaporation from waste using pan evaporation values. The correlation showed with acceptable precision with 0.5 mm day-1 error. A comparison also made with the previous researches in Germany showed higher values for maximum evaporation per day (8 mm day-1 instead of 5 mm day-1) and higher maximum possible values for evaporation (180 mm instead of 20 mm). The current study showed that the evaporation can have a significant impact on the amount of leachate produced in the landfills in arid areas and implementing the current tool will lead to more efficient design of leachate treatment in landfills or better decision making for operation of landfills.
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