Released on = February 27, 2006, 4:06 am

Press Release Author = Ms. Papita Saha

Industry = Environment

Press Release Summary = Liner is a barrier to fluid movement. In Industry
Geo-membrane are used as liner materials for Hazardous Waste landfill. But these are
very costly, unsuitable for retention of some Hydrocarbons and exposed part to
sunlight is susceptible to UV attack & there are every possibility of structural
cracking. By using these materials as liner materials there is every possibility of
contamination of ground water, surface water by hazardous material.Whereas Clay
liners at the bottom of landfill body play a very important part in the whole multi
barrier system for retaining pollutants.

Press Release Body = Clay liners at the bottom of landfill body play a very
important part in the whole multi barrier system for retaining pollutants. Porosity
of clay particle is 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 and it is
cheap. Clay has the property of swelling, plasticity, cohesion and adhesion. Some
clay soils have the ability to act as membrane that restricts the passage of charged
solutes. An attempt has been made in laboratory scale for using clay as liner
materials for the hazardous waste landfill.

The aim of this project work is: -

To investigate the transport of organic and inorganic compounds through clay liners
having different degrees of compaction of clay liners, different mixes of clay and
silts and different levels of sand contamination & to develop model for composite
membrane and to test the validity of the models with experimental results.

The outcome of the research work will be analysed and subsequently the technology
will be transferred to different industries for its appropriate application.


Web Site = http://geocities.com/papitasaha

Contact Details = Papita Saha.
Lecturer
ITME College
India
E-mail: papitasaha@gmail.com