Details
| Original language | English |
|---|---|
| Pages (from-to) | 866-882 |
| Number of pages | 17 |
| Journal | Chemosphere |
| Volume | 216 |
| Publication status | Published - 18 Oct 2018 |
Abstract
Fly ash is the residue of coal combustion collected by electrostatic or cyclone separator. It is one of the largest quantities of waste disposed in the world. Fly ash represents mostly less than 100 micron in size spherical particles with pozzolanic and hydraulic properties depending on its composition. Utilization of fly ash depends on its chemical, mineralogical composition and morphology. Because of coal nature, fly ash represents a significant drawback with presence of radionuclides such as 226Ra, 232Th and 40K. The fly ash can be used for various applications. The main amount of the fly ash is used for building materials production as cement additive and concrete production. Therefore, the determination of radiological properties both in the fly ash and final products are important parameters to consider. Radioactive isotopes cause release of alpha, beta, particles gamma rays and radon exhalation. However, fly ash addition doesn't increase the gamma dose substantially. Moreover, radioactive elements are generally immobilized within glass phase and therefore, radon emanation is not high. In this review the latest development of utilization of the various fly ashes with a different level of radioactive elements content for value added application are presented and a possible new direction of applications are discussed.
Keywords
- Air Pollutants, Radioactive/analysis, Coal Ash/chemistry, Construction Materials/radiation effects, Radioactivity, Fly ash, Value added utilization, Building materials, Radioactivity measurements
ASJC Scopus subject areas
- Medicine(all)
- Public Health, Environmental and Occupational Health
- Environmental Science(all)
- Pollution
- Chemistry(all)
- General Chemistry
- Environmental Science(all)
- Health, Toxicology and Mutagenesis
- Environmental Science(all)
- Environmental Engineering
- Environmental Science(all)
- Environmental Chemistry
Sustainable Development Goals
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In: Chemosphere, Vol. 216, 18.10.2018, p. 866-882.
Research output: Contribution to journal › Review article › Research
}
TY - JOUR
T1 - Processing and uses of fly ash addressing radioactivity (critical review)
AU - Surenjav, Enkhtuul
AU - Vahlbruch, Jan
AU - Temuujin, J.
AU - Rüscher, Claus
N1 - Funding information: JT and CHR thank to A v Humboldt Foundation (Germany) for the continuing support of joint research. JT and ES thank to Mongolian Foundation for Science and Technology for the support of their research projects.
PY - 2018/10/18
Y1 - 2018/10/18
N2 - Fly ash is the residue of coal combustion collected by electrostatic or cyclone separator. It is one of the largest quantities of waste disposed in the world. Fly ash represents mostly less than 100 micron in size spherical particles with pozzolanic and hydraulic properties depending on its composition. Utilization of fly ash depends on its chemical, mineralogical composition and morphology. Because of coal nature, fly ash represents a significant drawback with presence of radionuclides such as 226Ra, 232Th and 40K. The fly ash can be used for various applications. The main amount of the fly ash is used for building materials production as cement additive and concrete production. Therefore, the determination of radiological properties both in the fly ash and final products are important parameters to consider. Radioactive isotopes cause release of alpha, beta, particles gamma rays and radon exhalation. However, fly ash addition doesn't increase the gamma dose substantially. Moreover, radioactive elements are generally immobilized within glass phase and therefore, radon emanation is not high. In this review the latest development of utilization of the various fly ashes with a different level of radioactive elements content for value added application are presented and a possible new direction of applications are discussed.
AB - Fly ash is the residue of coal combustion collected by electrostatic or cyclone separator. It is one of the largest quantities of waste disposed in the world. Fly ash represents mostly less than 100 micron in size spherical particles with pozzolanic and hydraulic properties depending on its composition. Utilization of fly ash depends on its chemical, mineralogical composition and morphology. Because of coal nature, fly ash represents a significant drawback with presence of radionuclides such as 226Ra, 232Th and 40K. The fly ash can be used for various applications. The main amount of the fly ash is used for building materials production as cement additive and concrete production. Therefore, the determination of radiological properties both in the fly ash and final products are important parameters to consider. Radioactive isotopes cause release of alpha, beta, particles gamma rays and radon exhalation. However, fly ash addition doesn't increase the gamma dose substantially. Moreover, radioactive elements are generally immobilized within glass phase and therefore, radon emanation is not high. In this review the latest development of utilization of the various fly ashes with a different level of radioactive elements content for value added application are presented and a possible new direction of applications are discussed.
KW - Air Pollutants, Radioactive/analysis
KW - Coal Ash/chemistry
KW - Construction Materials/radiation effects
KW - Radioactivity
KW - Fly ash
KW - Value added utilization
KW - Building materials
KW - Radioactivity measurements
UR - http://www.scopus.com/inward/record.url?scp=85056710447&partnerID=8YFLogxK
U2 - 10.1016/j.chemosphere.2018.10.112
DO - 10.1016/j.chemosphere.2018.10.112
M3 - Review article
C2 - 30390998
VL - 216
SP - 866
EP - 882
JO - Chemosphere
JF - Chemosphere
SN - 0045-6535
ER -