A comprehensive characterisation of fly ash from a thermal power plant in Eastern India

Sarkar, Arindam; Rano, Ruma; Udaybhanu, G.; Basu, Amitabha

doi:10.1016/j.fuproc.2005.09.005

Cited by 90 publications

(46 citation statements)

References 24 publications

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“…This indicates that coarsest particles get collected in the field F1 (nearest) while the finest particles get collected in the field F5 (farthest), respectively. These observations are consistent with the results reported in the literature [74][75][76][77] and the trends depicted in Fig. 2.…”

Section: Resultssupporting

confidence: 93%

Influence of flue gas conditioning on fly ash characteristics

Shanthakumar

Singh

Phadke

2008

Fuel

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Section: Resultssupporting

confidence: 93%

Influence of flue gas conditioning on fly ash characteristics

Shanthakumar

Singh

Phadke

2008

Fuel

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“…In general, behavior of trace elements in coal combustion results from many factors, such as, their affinities and contents in coal, operating conditions and emission control devices (Sarkar et al, 2006;Dai et al, 2010). To elucidate the behavior of the trace elements during coal combustion, a relative enrichment factor was calculated by the following formula: RE = (element content in fly ash)/(element content in coal) × (% ash content in coal)/100.…”

Section: Trace Elements In Coal and Fly Ashmentioning

confidence: 99%

“…Most elements (except Ga) had an RE value less than 1, indicating that a portion of the trace elements have not been effectively captured by fly ash, and were directly released from the chimney. The relationship of element content and the fly ash particle size have been widely studied since the content of some elements is high in small particles and these particles are hard to remove from flue gas (Sarkar et al, 2006;Dai et al, 2010). Most elements show a pronounced trend of increased content with decreasing particle size, such as: Be, Cu, Ni, V, Se, Mo and Cd, while the content of Ba, Co, Zn and Pb shows an imperceptible change with decrease of particle size.…”

Section: Trace Elements In Coal and Fly Ashmentioning

confidence: 99%

Content and Distribution of Trace Elements and Polycyclic Aromatic Hydrocarbons in Fly Ash from a Coal-Fired CHP Plant

Liu

Cao

2014

Aerosol Air Qual. Res.

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The levels of trace elements and polycyclic aromatic hydrocarbons (PAHs) in fly ash generated by coal combustion have received considerable attention in recent years, due to their potential environmental impact. Sixteen high priority PAHs and 14 trace elements in coal fly ash were measured. The particle sizes of fly ash showed a bimodal distribution, and most ash particles were within a range of 20-25 µm in diameter. The fly ash exhibited high contents of CaO and SO 3 , which was influenced by the desulfidation treatment of limestone. The Be, Cu, Ni, V, Se, Mo and Cd contents increased significantly with decreasing particle sizes of fly ash, while those of Zn and Pb showed no obvious trends. PAHs with three-and four-rings were the dominate species in all the fly ash. The amount low molecular weight PAHs with two-, three-and four-rings was inversely correlated with the particle sizes of the fly ash.

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“…Characteristics of ash produced from a thermal power plant depend on the coal source, coal pulverization, boiler type and ash collection device [3,4]. Good amount of work has been carried out on fly ash and bottom ash as compared to pond ash.…”

Section: Introductionmentioning

confidence: 99%

Environmental Impact and Physicochemical Assessment of Pond Ash for its Potential Application as a Fill Material

Suthar

Aggarwal

2016

Int. J. of Geosynth. and Ground Eng.

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Thermal power plants (TPPs) produce a large quantity of coal ash, whose disposal is a big environmental issue. A major portion of coal ash is dumped as pond ash in ash pond near TPPs. Properties of pond ash vary from TPP to TPP and also within the same ash pond at inflow and outflow point. To assess the feasibility of pond ash as a fill material, pond ash samples were collected from inflow and outflow points of three TPPs in Haryana. This paper presents a detailed characterization study on the physicochemical, mineralogical and morphological properties of pond ash samples. Leaching study was also carried out to assess the potential contamination of ground water from coal ash fills. Results reveal that all inflow and outflow pond ashes have low specific gravity (2.03-2.27) as compared to soil (2.6-2.7), i.e. natural fill material, low amount of unburned carbon content (1.79-3.49 %) and the values of maximum dry density and optimum moisture content are within the permissible limits as per design standards of embankment construction. The results of leaching study indicate that concentration of lead (Pb) and chromium (Cr) are quite high from standard land disposal limit, prescribed by Ministry of Environment and Forest in all pond ash samples. So it can be effectively used as construction fill materials for low-lying areas and as embankment materials etc., with caution to protect ground water from contamination due to the high concentration of lead (Pb) and chromium (Cr).

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A comprehensive characterisation of fly ash from a thermal power plant in Eastern India

Cited by 90 publications

References 24 publications

Influence of flue gas conditioning on fly ash characteristics

Influence of flue gas conditioning on fly ash characteristics

Content and Distribution of Trace Elements and Polycyclic Aromatic Hydrocarbons in Fly Ash from a Coal-Fired CHP Plant

Environmental Impact and Physicochemical Assessment of Pond Ash for its Potential Application as a Fill Material

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