Chemical, Leaching, and Toxicity Characteristics of Coal Ashes from Circulating Fluidized Bed of a Philippine Coal-Fired Power Plant

Gallardo, Susan; Hullebusch, Eric D. van; Pangayao, Denvert; Salido, Beatice Mari; Ronquillo, Ria

doi:10.1007/s11270-015-2367-9

Cited by 8 publications

(5 citation statements)

References 37 publications

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“…Any mineral material with a unit size <100 nm is more active in the environment due to bio adsorption; in the case of carbon particles, this characteristic allows them to encapsulate several dangerous elements (1). The lower the particle size and the higher the concentration of heavy metals, the toxicity increases (18). doi: 10.25100/iyc.v26i1.13113…”

Section: Resultsmentioning

confidence: 99%

“…The composition of CFCs is mostly silicates, aluminates, carbonates, metalloids, and heavy metals (17). Gallardo et al, (18) measured the surface area of CFC and CVC which is between 1.16 and 2.92 m 2 /g respectively; highlighting that small particles have a larger surface area; therefore CVCs tend to be more harmful to the environment and human health.…”

Section: Introductionmentioning

confidence: 99%

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Evaluación de material particulado en cenizas de fondo de carbón y sus posibles efectos ecotóxicos: estudio preliminar

Torres Agredo,

Agudelo-Morales,

Vallejo Vallejo

2024

inycomp

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Las actividades industriales que utilizan carbón como fuente de energía, generan cantidades considerables de residuos sólidos que afectan la dinámica natural del ambiente, así como a la salud humana. Entre los residuos generados se encuentran las cenizas de fondo de carbón, las cuales podrían generar efectos adversos en la salud humana, especialmente por afecciones respiratorias. En este sentido se presenta una caracterización física (tamaño de partícula), química y ambiental, de cenizas de fondo generadas a partir de la combustión del carbón en una industria colombiana. Las técnicas empleadas para el análisis de tamaño de partícula fueron microscopía electrónica de barrido (SEM), microscopía electrónica de transmisión (TEM) y microscopía óptica, donde se observa material particulado de interés ambiental PM10 y PM2.5. También se realizó un análisis químico a través de la técnica de Fluorescencia de Rayos X y un análisis termogravimétrico con el fin de determinar el contenido de carbón inquemado. Adicionalmente, se realizó un bioensayo con semillas de Vigna radiata el cual indicó una reducción de la radícula, siendo más notoria en concentración de 50 % al 100% de ceniza. En las cenizas estudiadas, se encontraron partículas a escala de micras y nanómetros que podrían generar efectos negativos en la salud por su inhalación; así como contenido de metales pesados y compuestos de cuidado por su potencial riesgo a la salud y al ambiente.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Evaluación de material particulado en cenizas de fondo de carbón y sus posibles efectos ecotóxicos: estudio preliminar

Torres Agredo,

Agudelo-Morales,

Vallejo Vallejo

2024

inycomp

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“…As the variability of the composition of coal has been shown to be very high, its toxicity has also been shown to vary from acutely toxic [27][28][29][30][31] to non-toxic [28-30, 32, 33]. The consensus based on the gathered data showed that fly ash was more toxic than bottom ash [34][35][36]. However, the results were highly dependent on the investigated sample and the test organism used [37].…”

Section: Resultsmentioning

confidence: 99%

Comparison of the ecotoxic properties of oil shale industry by-products to those of coal ash

Järvik¹,

Konist²,

Lees³

et al. 2022

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The European Union (EU) presented a uniform List of Waste (LoW) in 2000 and last updated the technical guidance in 2018. The respective local regulations for the classification of waste in Estonia were set in 2015. Due to the changes in the regulations, it was necessary to review the properties of solid wastes generated in Estonian oil shale industry in light of hazardous properties. Therefore, the properties of the produced ash streams were analysed and the obtained results were compared to those for coal for being in accordance with common practices. The main objective of the paper was to answer the question whether the properties of oil shale (OS) are comparable to those of coal as coal and its combustion residues were not considered hazardous waste in Europe, but the respective counterparts of oil shale were. The EU guidelines suggest the use of calculations based on trace element concentrations for the classification of hazardous property (HP) 14 -ecotoxic. Therefore, an extensive study was conducted to investigate the hazardous properties of all the solid residues from power plants operating on oil shale and shale oil production facilities. This paper describes one part of it -the trace element compositions of the major ash streams produced in the Estonian oil shale industry and focuses on their comparison with data available for coal ash samples. The findings of the study showed that, similarly to coal, oil shale ash (OSA) should not be considered as ecotoxic due to the low concentrations of trace elements. It was found that the investigated oil shale ash samples exhibited a very similar composition and properties to those of coal, and as a result of a larger study, from the beginning of 2020, oil shale ash and other oil shale thermal treatment residues are not classified as hazardous waste in Estonia, thereby initiating policy changes that affect most areas of the economy.

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“…Ditemukan kandungan arsen, merkuri dan sianida tidak lebih dari 0,001 mg/l. Hasil ini sesuai dengan beberapa penelitian yang telah dilakukan di tempat lain (Arioz et al, 2012;Gallardo et al, 2015), dan menunjukkan bahwa fly ash menjadi semakin tidak berbahaya jika dimanfaatkan sebagai produk daripada hanya dibuang.…”

Section: Hasil Pengujianunclassified

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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Chemical, Leaching, and Toxicity Characteristics of Coal Ashes from Circulating Fluidized Bed of a Philippine Coal-Fired Power Plant

Cited by 8 publications

References 37 publications

Evaluación de material particulado en cenizas de fondo de carbón y sus posibles efectos ecotóxicos: estudio preliminar

Evaluación de material particulado en cenizas de fondo de carbón y sus posibles efectos ecotóxicos: estudio preliminar

Comparison of the ecotoxic properties of oil shale industry by-products to those of coal ash

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

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