Mineralogical comparison of coal fly ash with soil for use in agriculture

Kaur, Rajinder; Goyal, Dinesh

doi:10.1007/s10163-014-0323-1

Cited by 16 publications

(4 citation statements)

References 42 publications

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“…Thermal analysis of fly ash confirms the presence of UC with a large exothermic peak incorporated with weight loss. The starting point of UC combustion in TG-DTA analysis varies with the type of coal fly ash [ 55 , 59 , 60 ]. Typically, the amount of UC in fly ash is higher than that in bottom ash [ 61 ].…”

Section: Properties Of Coal-fired Power Plant Fly Ashmentioning

confidence: 99%

Firing-Associated Recycling of Coal-Fired Power Plant Fly Ash

Minh

Pham

Tung

et al. 2023

Journal of Analytical Methods in Chemistry

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Coal-fired power plant fly ash is a global environmental concern due to its small particle size, heavy metal content, and increased emissions. Although widely used in concrete, geopolymer, and fly ash brick production, a large amount of fly ash remains in storage sites or is used in landfills due to inadequate raw material quality, resulting in a waste of a recoverable resource. Therefore, the ongoing need is to develop new methods for recycling fly ash. The present review differentiates the physiochemical properties of fly ash from two coal combustion processes: fluidized bed combustion and pulverized coal combustion. It then discusses applications that can consume fly ash without strict chemical requirements, focusing on firing-associated methods. Finally, the challenges and opportunities of fly ash recycling are discussed.

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Section: Properties Of Coal-fired Power Plant Fly Ashmentioning

confidence: 99%

Firing-Associated Recycling of Coal-Fired Power Plant Fly Ash

Minh

Pham

Tung

et al. 2023

Journal of Analytical Methods in Chemistry

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“…Di samping itu, fly ash dengan kandungan aluminosilikat dan berbagai mineral inorganik dapat dipakai untuk perbaikan tanah (Kaur & Goyal, 2016). Kandungan alumina pada fly ash dapat didaur ulang dengan teknik pelindian menggunakan asam sulfat dengan efektivitas hingga 90% (Xu et al, 2016).…”

Section: Pendahuluanunclassified

The comparison of regulations on fly ash as a hazardous waste in Indonesia and several countries

Ekaputri

Bari

2021

MKTS

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This paper aims to encourage the Indonesian government to review the 2014 Government Regulation (PP) number 101 related to coal-ash. Fly ashes at power plants overload the landfills and requires complete handling solution. The utilization of fly ash in Indonesia are facing the issues, one of these is the categorization of fly ash as a hazardous waste. As a result, its utilization requires permissions from the ministry of environment and forestry. In this paper, a comparative study of fly ash classification as hazardous waste in India, United States of America, China and Vietnam was conducted. India and China are the coal importer from Indonesia. US regulation was once referred when drafting PP number 101. Vietnam is chosen as comparison in Southeast Asia. The Toxicity Characteristic Leaching Procedure (TCLP) results of fly ashes from 16 Indonesian power plants proved that their toxic content was lower than the TCLP parameters in the regulation. Acute Oral Toxicity Test (LD50) results showed that fly ash and bottom ash with dosage up to 7000 mg/kg did not cause fatalities. This study is a reference for the Indonesian government to verify the status of fly ash to be utilized as much as possible in various fields.

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“…XRD analysis is a well-defined technique, and used in most studies (e.g., Rivera, Kaur, Hesterberg, Ward, Austin and Duckworth [25], Kaur and Goyal [18], Kunecki, Panek, Koteja and Franus [32] and Mashau, Gitari and Akinyemi [14]) to assess the fly ash's mineralogical composition. In this study, we also conducted an XRD analysis of samples.…”

Section: Mineralogical Analysismentioning

confidence: 99%

“…Fly ash's mineralogical composition mainly depends on the geological features that inform coal formation and deposition, as well as the combustion condition [13][14][15]. Here, quartz [14,[16][17][18][19], mullite [14,[20][21][22], hematite [19,[23][24][25], magnetite, and lime are the most common and predominant phases apart from other minor constituents [22,[25][26][27][28]. Also, fly ash's mineralogical composition is determined by the type of coal used.…”

Section: Introductionmentioning

confidence: 99%

Composition and Morphology Characteristics of Magnetic Fractions of Coal Fly Ash Wastes Processed in High-Temperature Exposure in Thermal Power Plants

Bui

Kalantar

et al. 2019

Applied Sciences

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Coal-fired power stations are one of the primary sources of power generation in the world. This will produce considerable amounts of fly ash from these power stations each year. To highlight the potential environmental hazards of these materials, this study is carried out to evaluate the characterization of fly ashes produced in thermal power plants in northern Vietnam. Fly ash was firstly fractionated according to size, and the fractions were characterized. Then, each of these fractions was analyzed with regard to their mineralogical features, morphological and physicochemical properties. The analytical results indicate a striking difference in terms of the characteristics of particles. It was found that magnetic fractions are composed of magnetite hematite and, to a lower rate, mullite, and quartz. Chemical analyses indicate that the non-magnetic components mainly consist of quartz and mullite as their primary mineral phases. As the main conclusion of this research, it is found that the magnetic and non-magnetic components differ in terms of shape, carbon content and mineralogical composition. In addition, it was found that magnetic components can be characterized as more spheroidal components compared to non-magnetic ones. This comprehensive characterization not only offers a certain guideline regarding the uses of different ash fractions but it will also provide valuable information on this common combustion process.

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Mineralogical comparison of coal fly ash with soil for use in agriculture

Cited by 16 publications

References 42 publications

Firing-Associated Recycling of Coal-Fired Power Plant Fly Ash

Firing-Associated Recycling of Coal-Fired Power Plant Fly Ash

The comparison of regulations on fly ash as a hazardous waste in Indonesia and several countries

Composition and Morphology Characteristics of Magnetic Fractions of Coal Fly Ash Wastes Processed in High-Temperature Exposure in Thermal Power Plants

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