Characterization of waste. Methodology for the determination of the leaching behaviour of waste under specified conditions

1998 ◽  
Keyword(s):  
Leaching Behaviour

scholarly journals Assessment of Characterization of Leachate Generated using Leachate Generated Model

2020 ◽  
Vol 9 (6) ◽  
pp. 443-447
Keyword(s):  
Waste Water ◽  
Pilot Study ◽  
Groundwater Contamination ◽  
Water Contamination ◽  
Tube Wells ◽  
Leaching Behaviour ◽  
Land Disposal ◽  
Leachate Quality

There are many approaches which have been used to assess the ground water and surface water contamination. The land disposal of municipal waste is potential cause of groundwater contamination unscientifically managed dumping yards are prone to groundwater contamination because of leachate production. The leaching behaviour of a waste can be assessed either by the experimental determination of the characteristics of leachate generated or through mathematical modeling.A pilot study was conducted to assess the characterization of leachate generating using Leachate Generated Model (LGM). In present study the model is used to study the effect of gomutra and enzymes on the municipal solid waste and the leachate quality. The result indicated that the colour of leachate generated in study area was found to be oxygenated and has organic compound which resulted in increased permeability. The results reveal that the use of gomutra (15%) mixed with MSW, was a good indication that organic matters in leachate are readily biodegradable in mature land fill, where as 10% gomutra used in MSW, showed that (BOD / COD = 0.64) leachate had high biodegradability through anaerobic phase. This stimulator showed better result than enzymes used and is also helpful to prevent containing of waste water tube wells and bore holes affected from leachate generated.

Characterization of Impressed Current Technique to Model Corrosion of Reinforcement in Concrete

2020 ◽  
Vol 11 (1) ◽  
pp. 93-99
Author(s):  
Abu Zakir Morshed ◽  
Sheikh Shakib ◽  
Tanzim Jahin
Keyword(s):  
Immersion Time ◽  
Chloride Content ◽  
Engineering Science ◽  
Coastal Regions ◽  
Faraday’S Law ◽  
Current Technique ◽  
Corrosion Cell ◽  
Impressed Current

Corrosion of reinforcement is an important durability concern for the structures exposed to coastal regions. Since corrosion of reinforcement involves long periods of time, impressed current technique is usually used to accelerate the corrosion of reinforcement in laboratories. Characterization of impressed current technique was the main focus of this research,which involved determination of optimum chloride content and minimum immersion time of specimens for which the application of Faraday’s law could be efficient. To obtain optimum chloride content, the electrolytes in the corrosion cell were prepared similar to that of concrete pore solutions. Concrete prisms of 200 mm by 200 mm by 300 mm were used to determine the minimum immersion time for saturation. It was found that the optimum chloride content was 35 gm/L and the minimum immersion time for saturation was 140 hours. Accounting the results, a modified expression based on Faraday’s law was proposed to calculate weight loss due to corrosion. Journal of Engineering Science 11(1), 2020, 93-99

The Determination of Sense via Deleuze and Blanchot: Paradoxes of the Habitual, the Immemorial, and the Eternal Return

2008 ◽  
Vol 2 (2) ◽  
pp. 155-177 ◽  
Author(s):  
Eugene Brently Young
Keyword(s):  
Eternal Return

Eternal return is the paradox that accounts for the interplay between difference and repetition, a dynamic at the heart of Deleuze's philosophy, and Blanchot's approach to this paradox, even and especially through what it elides, further illuminates it. Deleuze draws on Blanchot's characterisations of difference, forgetting, and the unlivable to depict the ‘sense’ produced via eternal return, which, for Blanchot, is where repetition implicates or ‘carries’ pure difference. However, for Deleuze, difference and the unlivable are also developed by the living repetition or ‘contraction’ of habit, which results in his distinctive characterization of ‘force’, ‘levity’, and sense in eternal return.

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