scholarly journals A Study to Understand Reduction Behavior of Toxic Metal in Leachate Using Bentonite

2021 ◽  
Vol 23 (06) ◽  
pp. 402-408
Author(s):  
Anupam Kaushik ◽  
◽  
Dr. Sindhu J. Nair ◽  
Keyword(s):  
Hydraulic Conductivity ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Waste Disposal ◽  
Toxic Metals ◽  
Toxic Metal ◽  
Solid Waste Disposal ◽  
Liner Material ◽  
Reduction Behavior ◽  
Landfill Liner

Landfills are the most popular municipal solid waste disposal system. The landfill liner is designed to isolate the waste from the soil beneath to minimize the passage of leachate into the groundwater. Usually, compacted liner materials consist of soil rich in clay minerals for their low hydraulic conductivity. This study is an attempt to assess the use of bentonite as a potential liner material. With the addition of bentonite in landfill liner, the toxicity of leachate is expected to decrease. It was found that bentonite bed works as a shield against percolation of heavy toxic metals from leachate of landfills into soil and groundwater.

Shrinkage behavior of clay liner material exposed to simulated municipal solid waste landfill leachate

1988 ◽  
Vol 15 (4) ◽  
pp. 500-508 ◽  
Author(s):  
J. P. A. Hettiaratchi ◽  
S. E. Hrudey ◽  
D. W. Smith ◽  
D. C. C. Sego
Keyword(s):  
Hydraulic Conductivity ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Effective Stress ◽  
Clay Liners ◽  
Laboratory Procedure ◽  
Liner Material ◽  
Landfill Liner ◽  
Free Swell ◽  
Soil Shrinkage

The use of hydraulic conductivity (k) of soil material as the sole basis for sanitary landfill liner design is reviewed. On one hand, k measurements obtained in the laboratory often vary by several orders of magnitude. On the other, laboratory-measured k values fail to address field behavior, where crack formation before and (or) during landfill operation may control the bulk permeability.A synaerisis shrinkage test (SST) to study the soil shrinkage caused by municipal solid waste (MSW) leachates is introduced. Leachates cause soil shrinkage by reducing interparticle repulsive stresses thereby increasing effective stress. The effective stress concept and double layer theory adequately describe the synaerisis shrinkage phenomenon. A strong correlation was obtained between percent strain, the soil–liquid parameter determined from SST results, and a volume change parameter (free swell difference, FSD) from sedimentation test results. The results provide a basis for a broader approach to landfill liner design. The SST, which supplies information on both volume shrinkage and permeability changes caused by leachate, provides a useful laboratory procedure for evaluating liner materials. Key words: clay liners, shrinkage, leachate, synaerisis, hydraulic conductivity.

Ecological-geochemical assessment of the territories for the municipal solid waste disposal

2018 ◽  
Vol 19 (1(19)) ◽  
pp. 22-26
Author(s):  
O.T. Azimov ◽  
◽  
I.V. Kuraeva ◽  
Yu.Yu. Voytyuk ◽  
A.I. Samchyk ◽  
...  
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Waste Disposal ◽  
Solid Waste Disposal ◽  
Geochemical Assessment

scholarly journals ENGINEERING GEOLOGICAL TYPIFICATION OF TERRITORIES FOR ALLOCATION OF MUNICIPAL SOLID WASTE MANAGEMENT FACILITIES

2020 ◽  
Vol 17 (35) ◽  
pp. 1124-1136
Author(s):  
Irina KOZLIAKOVA ◽  
Irina KOZHEVNIKOVA ◽  
Olga EREMINA ◽  
Nadezhda ANISIMOVA
Keyword(s):  
Waste Management ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Waste Disposal ◽  
Solid Waste Management ◽  
Federal District ◽  
Waste Utilization ◽  
Municipal Solid Waste Management ◽  
Solid Waste Disposal ◽  
Municipal Solid Wastes

The management of municipal solid waste (MSW) appears to be one of the major ecological problems at present. Selecting sites for the disposal of municipal solid wastes or waste utilization facilities is one of the most contentious aspects of waste management. The present study aimed to develop the methodology to assess the natural protection of the geological environment from contamination upon the implementation of large ecological projects due to the allocation of MSW utilization facilities. The case of the Central Federal District of Russia (CFD) is taken as an example. The suitability of territories for municipal solid waste disposal is assessed according to the presence of weakly permeable deposits in the geological cross-section and their occurrence mode. A “map of engineering geological zoning CFD by the conditions of allocation MSW disposal sites and utilization facilities” has been compiled to a scale 1:2500000. The map gives a general indication of the suitability of the planned sites for waste disposal within the regarded region and showed that, for the bulk of territory, the allocation of MSW disposal and management facilities requires undertaking additional measures for the geoenvironmental protection from contamination.

Quantification of methane emission from municipal solid waste disposal in Delhi

2007 ◽  
Vol 50 (3) ◽  
pp. 240-259 ◽  
Author(s):  
Vikash Talyan ◽  
R.P. Dahiya ◽  
S. Anand ◽  
T.R. Sreekrishnan
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Waste Disposal ◽  
Methane Emission ◽  
Solid Waste Disposal
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