Geochemical database of feed coal and coal combustion products (CCPs) from five power plants in the United States

Coal combustion products can be considered as commercial products or waste depending on the quality of the coal, the combustion process, and the country’s legislation. The circular economy can create incentives for the implementation of new business models in large power plants in cooperation with coal mines and users of coal combustion products. This is particularly important in Poland, where coal still remains the main source of energy, employing over 80,000 workers. The objective of this study was to assess the readiness for change toward a circular economy and to identify challenges, barriers, and plans at seven large power plants. To do this, a final questionnaire was developed after checking environmental reporting, a CATI survey, and brainstorming between circular economy leaders from science, industry, and non-governmental organizations. The results indicate that even if the great economic and environmental potential of coal combustion products management are understood, all requirements connected with CO2 and air pollution have higher priorities. Policy shifts away from coal do not promote cooperation, but the higher acceptance of products from waste and more transparent data shows a large potential for changes toward a circular economy.

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Characteristics of coal combustion products (CCP's) from Kentucky power plants, with emphasis on mercury content

Fuel ◽

10.1016/j.fuel.2004.09.029 ◽

2005 ◽

Vol 84 (11) ◽

pp. 1338-1350 ◽

Cited By ~ 44

Author(s):

J HOWER ◽

T ROBL ◽

C ANDERSON ◽

G THOMAS ◽

T SAKULPITAKPHON ◽

...

Keyword(s):

Coal Combustion ◽

Power Plants ◽

Combustion Products ◽

Mercury Content ◽

Coal Combustion Products

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Mineralogical and Environmental Geochemistry of Coal Combustion Products from Shenhuo and Yihua Power Plants in Xinjiang Autonomous Region, Northwest China

Minerals ◽

10.3390/min9080496 ◽

2019 ◽

Vol 9 (8) ◽

pp. 496 ◽

Cited By ~ 1

Author(s):

Wu ◽

Li ◽

Zhuang ◽

Querol ◽

Moreno ◽

...

Keyword(s):

Fly Ash ◽

Coal Combustion ◽

Inductively Coupled Plasma ◽

Power Plants ◽

Environmental Geochemistry ◽

Combustion Products ◽

Coal Combustion Products ◽

X Ray ◽

Inductively Coupled ◽

Xinjiang Autonomous Region

The mineralogical and geochemical characteristics of feed coals and coal combustion products (CCPs) from the Shenhuo and Yihua Power Plants in Xinjiang Autonomous Region, were studied by means of proximate analysis, Power X-ray diffraction (XRD), scanning electron microscopy with Energy Dispersive X-ray analyzer (SEM-EDX), inductively coupled plasma atomic emission spectrometry (ICP-MS) and inductively coupled plasma mass spectrometry (ICP-AES). The environmental geochemistry of CCPs was evaluated by Al-normalized enrichment factor as well as European Standard EN-12457 leaching test. Two feed coals have the characteristics of low sulfur content, medium to high volatiles matter yields, medium moisture content, super low to medium ash yield, medium to high calorific value and low mineral content. The main crystalline facies in fly ash and slag are quartz and mullite, with a small amount of calcite, and some unburned carbon. Hematite, SrSO4 and barite also can be observed in fly ashes by SEM. Typical plerophere occurs in fine fly ash rather than the coarse fly ash. The concentration of most trace elements in CCPs falls within the lower concentration range of European fly ashes. With respect to the partitioning behavior of trace elements during coal combustion, S is highly volatile, and Mg, Na, Zn, B, Co, As, Nb, Zr, Cu and K also show certain volatility, which may to some extent emit to the atmosphere. Furthermore, leaching experiments show that leachable concentrations of most of the potentially toxic elements in CCPs are low, and the CCPs fall in the range between inert and nonhazardous landfill material regulated by the 2003/33/EC Decision.

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