Composite Leaching of Thermal Power Plant Bottom Ash to Ensure Its Performance on Cement Mortar

2020 ◽  
pp. 75-79
Author(s):  
Sivakumar Naganathan ◽  
Salmia Beddu ◽  
Muhammad Zulfiqar Ajmulkhan ◽  
Jegatheish Kanadasan ◽  
Zakaria Che Muda ◽  
...  
Keyword(s):  
Power Plant ◽  
Thermal Power Plant ◽  
Cement Mortar ◽  
Thermal Power ◽  
Bottom Ash

Compressive Strength and Density of Cementless Unfired Lightweight Brick Utilizing Coal Ash from Coal-Fired Thermal Power Plant

2013 ◽  
Vol 594-595 ◽  
pp. 527-531
Author(s):  
Mohamad Ezad Hafez Mohd Pahroraji ◽  
Hamidah Mohd Saman ◽  
Mohamad Nidzam Rahmat ◽  
Kartini Kamaruddin ◽  
Ahmad Faiz Abdul Rashid
Keyword(s):  
Compressive Strength ◽  
Power Plant ◽  
Thermal Power Plant ◽  
Thermal Power ◽  
Bottom Ash ◽  
Coal Ash ◽  
Hydrated Lime ◽  
Raw Material ◽  
The World ◽  
Blastfurnace Slag

Millions tons of coal ash which constitute of fly ash and bottom ash were produced annually throughout the world. They were significant to be developed as masonry brick to substitute the existing widely used traditional material such as clay and sand brick which were produced from depleting and dwindling natural resources. In the present study, the coal ash from coal-fired thermal power plant was used as the main raw material for the fabrication of cementless unfired lightweight brick. The binder comprising of Hydrated Lime (HL)-activated Ground Granulated Blastfurnace Slag (GGBS) system at binding ratio 30:70, 50:50 and 70:30 were used to stabilize the coal ash in the fabrication process of the brick. Foam was used to lightweight the brick. The compressive strength and ambient density were evaluated on the brick. The results indicated that the brick incorporating HL-GGBS system achieved higher strength of 20.84N/mm2 at 28 days compare to the HL system with strength of 13.98N/mm2 at 28 days. However, as the quantity of foam increase at 0%, 25%, 50%, 75% and 100%, the strength and density for the brick decreased.

scholarly journals Results of the modernization of the electrostatic precipitator at unit B1 of the Thermal Power Plant Kostolac B

2018 ◽  
Vol 22 (Suppl. 5) ◽  
pp. 1623-1634
Author(s):  
Milic Eric ◽  
Predrag Stefanovic ◽  
Zoran Markovic ◽  
Rastko Jovanovic ◽  
Ivan Lazovic ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Power Plant ◽  
Thermal Power Plant ◽  
Electrostatic Precipitator ◽  
Thermal Power ◽  
Bottom Ash ◽  
Acceptance Test ◽  
Working Parameters ◽  
Matter Concentration ◽  
Limiting Value

The electrostatic precipitator system of the lignite fired 350 MWe unit B1 of Thermal Power Plant Kostolac B has been modernized during 2014. The results of complex in site measurements, performed in the frame of performance control test at the beginning of the exploitation period of the upgraded electrostatic precipitator proved that, under normal and guarantee working conditions of the boiler and precipitator, the emission of particulate matter do not exceed limiting value. After the period of precipitator further adjustments, five series of measurements in the frame of acceptance test were performed in accordance with relevant standards. This paper presents results of the investigation of particulate matter concentration, laboratory analysis of the lignite, fly and bottom ash samples, working parameters of the unit and upgraded electrostatic precipitator as well as results of the calculations. The averaged mean particulate concentration at the exit of upgraded electrostatic precipitator of the unit B1 during Acceptance test was below guaranteed value. It is confirmed that adjustments of electrostatic precipitator electrical parameters have improved electrostatic precipitator efficiency, as well that electrostatic precipitator could work highly efficiently in energy save mode with lower power consumption.

scholarly journals Use of bottom ash from thermal power plant and lime as filler in bituminous mixtures

2015 ◽  
Vol 65 (318) ◽  
pp. e051 ◽  
Author(s):  
E. López-López ◽  
Á. Vega-Zamanillo ◽  
M. Á. Calzada-Pérez ◽  
M. A. Taborga-Sedano
Keyword(s):  
Power Plant ◽  
Thermal Power Plant ◽  
Thermal Power ◽  
Bottom Ash ◽  
Bituminous Mixtures

Exploration of the potential capacity of fly ash and bottom ash derived from wood pellet-based thermal power plant for heavy metal removal

2020 ◽  
Vol 740 ◽  
pp. 140205 ◽  
Author(s):  
Jong-Hwan Park ◽  
Ju-Hyun Eom ◽  
Su-Lim Lee ◽  
Se-Wook Hwang ◽  
Seong-Heon Kim ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Fly Ash ◽  
Power Plant ◽  
Thermal Power Plant ◽  
Metal Removal ◽  
Thermal Power ◽  
Heavy Metal Removal ◽  
Bottom Ash ◽  
Wood Pellet ◽  
Potential Capacity

Influence of Addition of Waste Glass as a Fluxing Agent on the Bloating Phenomenon of Artificial Aggregates Fabricated from Coal Bottom Ash

2012 ◽  
Vol 724 ◽  
pp. 455-459 ◽  
Author(s):  
Seung Gu Kang ◽  
Si Nae Jo ◽  
Gi Gang Lee
Keyword(s):  
Power Plant ◽  
Water Absorption ◽  
Thermal Power Plant ◽  
Thermal Power ◽  
Bottom Ash ◽  
Waste Glass ◽  
Dredged Soil ◽  
Black Core ◽  
Fluxing Agent ◽  
Sintering Method

The artificial aggregates (AAs) were manufactured from the parent batch powders consisting of bottom ash produced at thermal power plant and dredged soil by direct sintering method at 1050~1200°C for 10min. The bloating phenomenon could be occurred in AAs due to a gas-capturing caused by large quantity of liquid formed at the specimen surface. Increasing the amount of the Na2O added enlarged the area of black core and size of the macro pores in the aggregates. The inside black core got out of the surface of the specimens sintered at 1200°C showing the rugged and cracked surface, but this morphology did not cause a water absorption to increase.

scholarly journals Leaching characteristics of wastes from Kemerkoy (Mugla-Turkey) power plant

2013 ◽  
Vol 2 (1) ◽  
pp. 51-57
Keyword(s):  
Fly Ash ◽  
Power Plant ◽  
Thermal Power Plant ◽  
Thermal Power ◽  
Extraction Procedure ◽  
Bottom Ash ◽  
Coal Ash ◽  
Toxicity Tests ◽  
Western Coast ◽  
Ash Disposal

A main problem related to coal ash disposal is the heavy metal content of the residue. In this regard, experimental results of numerous studies have indicated that toxic trace metals may leach when fly ash and bottom ash contacts with water. In this study, fly ash and bottom ash samples obtained from Kemerköy thermal power plant, located on the south-western coast of Turkey, were subjected to toxicity tests such as the extraction procedures (EP) and toxicity characteristic leaching procedures (TCLP) of the U.S. Environmental Protection Agency (U.S. EPA), the so-called Method A extraction procedure of the American Society of Testing and Material (ASTM). When Pb and Cd concentrations, analysed according to EP and TCLP, were considered, Kemerköy fly and bottom ash can be classified as a hazardous waste under the principles of the Federal Resource Conservation and Recovery Act (RCRA). Based on the geochemical analyses carried out, it was also determined that several toxic trace elements, such as Pb, Zn, Cd, Cu and Co were enriched at the fly and bottom ash of Kemerköy thermal power plant.

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