A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Experimental and Numerical Studies on Usage of Soil–Bentonite Mixture as Clay Liner in Engineered Landfill
Engineered landfills are considered to be one of the best municipal solid waste (MSW) disposal technique due to its cost-effectiveness, efficiency, and large capacity. However, the continuous occurrence of several bioprocesses results in the generation of considerable quantity of leachates with high concentration of heavy metals in addition to other organic and inorganic compounds. Seepage of such leachates containing heavy metal ions contaminates nearby environment and ground which causes severe health problems and unhygienic environment for living beings. A well-designed liner acting as hydraulic barrier is needed to minimize or restrict the intrusion of leachates into the natural ground. The present study discusses the suitability of soil–bentonite mixture as a bottom liner material to minimize leachate migration in engineered landfills. The extensive experimental study is performed on emphasizing adsorption characteristics of soil–bentonite mixture when in contact with leachate of different concentrations and at varying durations. Variation in adsorption characteristics was assessed by using batch adsorption and column testing studies. Several adsorption isotherm models were utilized to fit the experimental data for varying presumptions to be taken into consideration for the considered clay liner-leachate interactions. Results revealed that Redlich–Peterson nonlinear model fits the experimental outcome more precisely as compared to other isotherm models.
Experimental and Numerical Studies on Usage of Soil–Bentonite Mixture as Clay Liner in Engineered Landfill
Engineered landfills are considered to be one of the best municipal solid waste (MSW) disposal technique due to its cost-effectiveness, efficiency, and large capacity. However, the continuous occurrence of several bioprocesses results in the generation of considerable quantity of leachates with high concentration of heavy metals in addition to other organic and inorganic compounds. Seepage of such leachates containing heavy metal ions contaminates nearby environment and ground which causes severe health problems and unhygienic environment for living beings. A well-designed liner acting as hydraulic barrier is needed to minimize or restrict the intrusion of leachates into the natural ground. The present study discusses the suitability of soil–bentonite mixture as a bottom liner material to minimize leachate migration in engineered landfills. The extensive experimental study is performed on emphasizing adsorption characteristics of soil–bentonite mixture when in contact with leachate of different concentrations and at varying durations. Variation in adsorption characteristics was assessed by using batch adsorption and column testing studies. Several adsorption isotherm models were utilized to fit the experimental data for varying presumptions to be taken into consideration for the considered clay liner-leachate interactions. Results revealed that Redlich–Peterson nonlinear model fits the experimental outcome more precisely as compared to other isotherm models.
Experimental and Numerical Studies on Usage of Soil–Bentonite Mixture as Clay Liner in Engineered Landfill
Lecture Notes in Civil Engineering
Muthukkumaran, Kasinathan (editor) / Rathod, Deendayal (editor) / Sujatha, Evangelin Ramani (editor) / Muthukumar, M. (editor) / Anjali, S. (author) / Ajitha, A. R. (author) / Seethalakshmi, P. (author)
Indian Geotechnical Conference ; 2021 ; Trichy, India
2022-12-11
14 pages
Article/Chapter (Book)
Electronic Resource
English
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