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Banerjee, Priyanko Kumar
- Sequestration of C02 in coal Seams: a few thoughts
Authors
1 Sr Research Fellow - CSIR Metallurgical & Material Engineering, Jadavpur University, IN
2 Professor, Metallurgical & Material Engineering, Jadavpur University, IN
Source
Indian Science Cruiser, Vol 22, No 3 (2008), Pagination: 24-26Abstract
With global targets of the decrease of greenhouse gas emissions, attention has turned to the capture and storage of carbondioxide in geological media. Proposals for C 0 2 storage have included plans to sequester C02 in deep, unminable coals seams, with the possibility for enhanced coal bed methane recovery. However, the extent to which coal can adsorb C02 is affected by a number of factors. The nature of the coal will determine the maximum adsorption capacity under a given set of conditions, but the sequestration environment will determine the extent to which thatultim ate capacity will be realized. The effect of both physical and chemical changes need to be understood. Parameters such as tem perature, pressure, and pH might be expected to have a moderate to large influence.
- Metallic Elements In Bottom Ash & Their Contamination In Surface & Subsurface Water - A Case Study
Authors
1 Department of Metallurgical & Materials Engineering, Jadavpur University, Kolkata-700032, IN
2 Department of Geological Science, Jadavpur University Kolkata-700032, IN
Source
Indian Science Cruiser, Vol 21, No 4 (2007), Pagination: 13-17Abstract
In the global Energy scenario, coal contributes the greatest fraction. Increased quantity of coal utilisation leads to the generation of huge quantity of non-combustible waste containing compounds of several alumino-silicates and trace elements As these wastes are disposed in the environment the toxic elements gets a fair chance to disturb the ecosystem An estimation of the concentrations of different trace elements in the waste- the bottom ash fraction and the fly ash fraction - helps in assessment of the intensity of environmental pollution contributed individually by these two fraction Since, there is no end-user of bottom ash, it is left uncared under the activities of different surface processes, where a fair chance of contamination always exists The preferred sites of contamination are the ground water through percolation of the trace elements with rainwater and surface water where seepage from the ash pond occurs In both the cases, quantity of contamination depends on the solubility of the com pounds of particular trace elements
The present investigation deals with the characterisation of different trace elements present in the bottom ash generated in Kolaghat Thermal Power Station (KTPS).