Experimental investigations of leaching of sodium, calcium, potassium, and zinc through refuse soil from Boragaon landfill (Guwahati)

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Landfills are one of the prominent forms of disposal of waste generated from urban areas. The waste dump landfills interact with atmosphere, rainwater, and soil moisture and produce landfill leachates. The leachate may migrate through the vadoze zone and cause pollution of the subsurface aquifer. In recent years, public as well as scientific community have raised intense concerns over pollution of groundwater resources due to spillage of hazardous elements from land surface to the underlying aquifer. This entire environmental phenomenon of landfill leaching is one of the most important issues of concern in urban areas.Landfill leaching is also an important environmental matter of concern in the city of Guwahati, Assam, India. Unscientific dumping of wastes are observed in many commercial centers, in and around the city. The effort of municipal authority to prevent such dumpings has become unsuccessful due to lack of infrastructure as well as civic sense of the citizens. The Guwahati municipal authorities have earmarked the site at Boragaon, near Deepor Beel, as the location to dispose all the municipality wastes generated from Guwahati. Deepor Beel is a wetland of international importance since it is the only Ramsar site of the North Eastern India. Though scientifically designed landfill waste dumps are planned for the site, the project is not fully functional and the municipal wastes are dumped near Deepor Beel.
Supervisors: Suresh A. Kartha and Bulu Pradhan