Released on = February 28, 2007, 3:34 am

Press Release Author = Ms Papita Saha

Industry = Environment

Press Release Summary = An experimental attempt has been taken in laboratory scale
using clay as liner materials to protect groundwater from contaminant & the
experimental work is to be transferred to the Industry purposes also

Press Release Body = One of the main problem in geo-environment field is intrusion
of toxic contaminants of toxic contaminant from Waste disposal & other sources into
underlying ground water supply. Water present in waste, rainwater infiltration
causes the penetration of water through liner & generation of leachate & will
eventually migrate from the landfill into the surrounding environment. Leachate
remains a critical issue in landfill containment. So, to protect of groundwater from
leachate, liners are used to enhance protection of environment as well as
groundwater. They serve as a hydraulic barrier to the flow of fluids.

Clay particle has porosity of 40 - 70% and permeability (K) value of clay is less
than 10-7 cm/s and so the rate of advection transport through clay is very low.
Clay has the property of swelling, plasticity, cohesion and adhesion. Low porosity,
slow diffusive transport, high adsorption of cations, and plasticity / swelling is
among the interesting property of clays.


Web Site = http://

Contact Details = Ms Papita Saha.
Kolkata
India
E-Mail:papitasaha@gmail.com