Landfills are highly engineering containment systems, designed to minimize the impact of soiled waste on the environment and human health. In case of economically developing countries the design of a liner varies, that depends upon number of factors such as potential of the landfill polluting the land and water environments, the local hydrogeology and meteorology, and the availability of suitable materials and monetary resourced. Landfill is a land disposal site for waste and its Preparation, management and control must be of the highest standard to minimize the risks to human health and the environment. Well-constructed and maintained landfills are safer than open dumping sites. Landfill liners are exposed to various types of physical, chemical and biological processes which gets affected by leach ate produced from the decomposition of waste dumps. The aim is to avoid any hydraulic connection between the wastes and the surrounding environment, particularly groundwater. To ensure this, the important characteristics for compacted landfill liners are; selection of materials, hydraulic conductivity, strength, compressibility and contaminant retention capacity. Compacted clay liners are of low cost, large leach ate attenuation capacity and resistance to damage. Natural clay is often fractured and cracked and due to non-availability of suitable soil at a site, it is necessary to mix imported clay materials with industrial wastes to achieve a suitable material. Usually soil, which is rich in clay minerals is used for compacted liner materials. But instead of clay, mixture of expansive soil such as bentonite with fly ash can be used as compacted liner materials for their low hydraulic conductivity which is required to be less than 1.00×10^ -7 cm/sec. Bentonite was mixed with fly ash in 2,4 8,12,16, and 20% by dry weight.
Permeability, bentonite, fly ash, landfill liner, pond ash
International Journal of Trend in Scientific Research and Development - IJTSRD having
online ISSN 2456-6470. IJTSRD is a leading Open Access, Peer-Reviewed International
Journal which provides rapid publication of your research articles and aims to promote
the theory and practice along with knowledge sharing between researchers, developers,
engineers, students, and practitioners working in and around the world in many areas
like Sciences, Technology, Innovation, Engineering, Agriculture, Management and
many more and it is recommended by all Universities, review articles and short communications
in all subjects. IJTSRD running an International Journal who are proving quality
publication of peer reviewed and refereed international journals from diverse fields
that emphasizes new research, development and their applications. IJTSRD provides
an online access to exchange your research work, technical notes & surveying results
among professionals throughout the world in e-journals. IJTSRD is a fastest growing
and dynamic professional organization. The aim of this organization is to provide
access not only to world class research resources, but through its professionals
aim to bring in a significant transformation in the real of open access journals
and online publishing.