An appraisal of the potential use of fly ash for reclaiming coal mine spoil

Ram, L. C.; Masto, Reginald Ebhin

doi:10.1016/j.jenvman.2009.10.004

Cited by 154 publications

(60 citation statements)

References 156 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It was because that the residual carbon particles from pulverized coal combustion are irregular in shapes (He et al, 2015). Similar observations were also found in previous studies (Ahmaruzzaman, 2010;Ram and Masto, 2010) that the carbonaceous material in the FA is composed of angular particles. For the FA in 75-150 and 54-75 µm size grades, as shown in Figs.…”

Section: Residual Carbon Content and Surface Morphologysupporting

confidence: 82%

“…Coal fly ash (FA), one type of coal combustion by-products (CCBs), with finer particles in size (i.e., 0.01-100 µm) is considered as a hazardous material (Ram and Masto, 2010). In China, the installed capacity of coal-fired power plants increased significantly since 2002 and the coal consumption reached up 2.8 billion tons in 2010 (China, 2010).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Emission and Species Distribution of Mercury during Thermal Treatment of Coal Fly Ash

Wang

Shi

Chiang

et al. 2016

Aerosol Air Qual. Res.

View full text Add to dashboard Cite

The thermal treatment of coal fly ash (FA) utilized by industries will inevitably lead to the emission of mercury, potentially causing atmospheric pollution. The present study is aimed at understanding the emission amount and species distribution of mercury during FA thermal treatment, and attempts were made to further provide basic data of mercury emission for environmental utilization of the FA by industries as raw materials. The physio-chemical properties of FA were analyzed and FA samples were heated at 200-1200°C in a tubular furnace in an oxidizing atmosphere. Thermogravimetric analysis (TGA) was carried out to determine the content of residual carbon in FA. The mercury species distribution was determined using United States EPA method 3200. The results indicated that semi-mobile mercury was the main mercury species in FA. Owing to the adsorption of residual carbon on Hg 0 , more residual carbon which lead to higher proportion of semi-mobile obtained in coarser size grades. 20% of total mercury emitted at 206°C, followed by a rapid growth of the emission rate of mercury at above 206°C, and the emission of total mercury achieved to be 50% and 90% corresponding to 291°C and 515°C, respectively. A distinct transformation from semi-mobile mercury to extractable mercury occurred at 200°C due to catalytic oxidation of Hg 0 and enhance the mobility and potential toxicity of mercury. Both extractable and semi-mobile mercury decreased sharply at 300-400°C. Finally, the non-mobile mercury was emitted with combustion of residual carbon in FA at 600-800°C. It was thus concluded that measures would be taken to control emission of mercury for environmentally friendly utilization of coal FA by industries when the FA was heated higher than 300°C.

show abstract

Section: Residual Carbon Content and Surface Morphologysupporting

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Emission and Species Distribution of Mercury during Thermal Treatment of Coal Fly Ash

Wang

Shi

Chiang

et al. 2016

Aerosol Air Qual. Res.

View full text Add to dashboard Cite

show abstract

“…They are used as calcium and magnesium fertilizers for soil fertilization [7,8,16,[31][32][33][34]. They improve physicochemical properties, increase the capacity of absorbent complex, enhances the absorbency to water, and reduce the density and alkalize acidic soils [7,14,17,32,34,35].…”

Section: Use In Agriculturementioning

confidence: 99%

The influence of changes in the structure of electric power generation on the management of energetic waste in Poland

Pyssa

2016

E3S Web Conf.

View full text Add to dashboard Cite

Abstract. In the paper the changes in structure of production of electric power and heat in Poland has been analyzed. Both the quantity and quality of incineration byproducts is determined by the way of generation of energy and used raw materials. It also depends on the production volume. The possibility of economic utilization of energetic waste from various production sources requires detailed knowledge of its physicochemical composition, properties and vulnerability for further processing in various technologies. Economic directions of using byproducts from incineration is also discussed in detail.

show abstract

“…광산 채움기술은 광산의 안 전성 향상, 환경영향성 저감, 채굴율 증진을 목적으로 적용되는 기술로서, 종래의 광산 채움기술은 모래, 자갈, 폐석 등의 비활성 물질을 채움재로 사용하거나 시멘트 계 재료와 함께 페이스트화 하여 적용하는 것이 일반적 이다 13) . 최근에는 산업 공정에서 발생하는 다양한 종류 의 무기 폐기물을 채움재로 활용하기 위한 연구가 활발 히 진행되고 있으며, CFBC 석탄재, PCC 석탄재 등을 활용한 채움 기술이 국내·외에서 적극적으로 검토 되고 있다 [15][16][17][18][19] . 그러나 석탄재를 광산 채움 용도로 효 율적으로 활용하기 위해서는 기술적인 검토와 함께 관 련 규격에 대해 향후 충분히 논의를 거쳐야 할 여지가 있다.…”

unclassified

Utilization of Circulating Fluidized Bed Combustion Ash and Related Specifications for Mine Backfills

Jang¹,

Ji²,

Ahn³

2017

Journal of the Korean Institute of Resources Recycling

View full text Add to dashboard Cite

Circulating fluidized bed combustion (CFBC) ash is one of useful mineralogical resources having abundant content of free lime and anhydrite, and has a self-cementitious property. Recently, considerable interest has been gained regarding the utilization of CFBC ash, along with its use in mine backfill and reclamation. Prior to adopt the use of CFBC ash in the mine backfill technology, discussion on the technology and related specification is prerequisite in the future. This paper presents a review on studies in the emerging technology of CFBC ash utilization, and provides useful information with regard to the specifications for mine backfills utilizing CFBC ash.

show abstract

An appraisal of the potential use of fly ash for reclaiming coal mine spoil

Cited by 154 publications

References 156 publications

Emission and Species Distribution of Mercury during Thermal Treatment of Coal Fly Ash

Emission and Species Distribution of Mercury during Thermal Treatment of Coal Fly Ash

The influence of changes in the structure of electric power generation on the management of energetic waste in Poland

Utilization of Circulating Fluidized Bed Combustion Ash and Related Specifications for Mine Backfills

Contact Info

Product

Resources

About