Experimental Investigation of Red Soil Blended With Bentonite and Lime as a Landfill Liner

Author:

Srinivasa H. N.,Muddaraju H. C.,Kavya G. N.,Shubha B. S.

Abstract

To control the migration of contaminants generated from the leachate, the liners are used in landfills. Compacted clay liners are widely used as liner materials due to the low value of hydraulic conductivity and large attenuation capacity. In the present work, an experimental study on red soil which is locally available is amended with bentonite use as a liner material for efficient leachate containment in landfills. The primary objective of this work is to determine the geotechnical properties of red soil blended with bentonite as a material for liners. The clay liners performance primarily depends on hydraulic conductivity. The hydraulic conductivity of the red soil is higher than the recommended limit (i.e.>10-7cm/s). Commercially available bentonite was blended with red soil to decrease the hydraulic conductivity. The permeability tests and falling head tests were conducted on 5%, 10%, 15%, and 20% bentonite by weight blended with red soil to evaluate hydraulic conductivity. From the experimental studies, it is clear that the red soil blended with 15% bentonite has a hydraulic conductivity value less than the requirements of landfill clay liner(i.e.<10-7cm/s). However, the Compressive Strength (CS) of blended red soil with 15% bentonite was less than 200 kPa, which is less than the minimum CS required for liner material. Lime was added to enhance the CS of the soil mixture and further studies were carried out. Swelling behavior is the major problem that is to be addressed during and after the construction of landfills. This study also presents the swelling behavior of red soil blended with bentonite and other additives.

Publisher

Informatics Publishing Limited

Reference11 articles.

1. Bundela P, Gautam SP, Pandey AK, Awasthi MK. Municipal solid waste management in Indian cities - A review. International Journal of Environmental Science. 2010; 1(4):591-606.

2. Taha MR, Kabir MH. Tropical residual soil as compacted soil liners. Environ Geol. 2005; 47(3):375-81. https://doi. org/10.1007/s00254-004-1160-7

3. Dinesh Kumar, Alappat BJ. Analysis of Leachate Contamination Potential of a Municipal Landfill using Leachate Pollution Index. Workshop on Sustainable Landfill Management 3-5 December 2003; Chennai, India. pp. 147-153.

4. Yahia E, Al-rawas AA, Al-aghbari MY, Qatan A. Assessment of crushed shales for use as compacted land- fill liners. Engineering Geology Journal. 2005; 80:271-81. https://doi.org/10.1016/j.enggeo.2005.06.001

5. Senthil MS, Suresh, ESM. Study on Geotechnical, Engineering and Chemical analysis of amended red soil as landfill liner material. Sambodhi (UGC care journal) 2021; pp. 212-220

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