Analysis of fly ash produced from combustion of refuse-derived fuel and coal mixtures

Taylor, David; Tompkins, Michael A.; Kirton, Sarah E.; Mauney, T.H.; Natusch, D. F. S.; Hopke, Philip K.

doi:10.1021/es00097a006

Cited by 25 publications

(10 citation statements)

References 19 publications

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“…However, the spherical particles do not predominate. Taylor, et al [6] also observed the same types of MSW fly ash particles but called them, perhaps more descriptively, "shredded sponge," "rolled paper," and "paint chips. "…”

Section: Physical Properties Ond Morphologymentioning

confidence: 95%

Physical properties and chemical species distributions within municipal waste combuster ashes

1989

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Incineration of municipal solid waste has been viewed as a preferred alternative to landfilling in recent years. Fly ash and bottom ash are of particular concern because of the high concentration of heavy metals on and within the ash matrix. This paper presents chemical, physical, and structural properties of the ashes from several municipal waste combustors.Properties of both the bulk ash and ash fractions separated b y particle size are included. Results have shown signijicant variability based upon both ash type and particle fraction.

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Section: Physical Properties Ond Morphologymentioning

confidence: 95%

Physical properties and chemical species distributions within municipal waste combuster ashes

1989

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“…As the temperature decreases downstream, they may nucleate and grow to form a submicrometer-sized aerosol that is difficult to capture in conventional air-pollution control devices. [1][2][3][4][5][6] Fine particles may pose enhanced health risks; 7 thus, EPA is considering modifying the National Ambient Air Quality Standards for particulate matter. 8 The metallic species have been reported to be enriched in combustion exhausts (compared to their concentrations in the feed).…”

Section: Introductionmentioning

confidence: 99%

Control of Toxic Metal Emissions from Combustors Using Sorbents: A Review

Biswas

1998

Journal of the Air & Waste Management Association

172

123

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This paper constitutes a review of the control of toxic metal emissions using sorbents. The objective of sorbent-injection methods is to effectively capture the metal species (preferably transform it to an environmentally benign form) and to suppress the fraction in the submicrometer mode. The design of an effective sorbent-injection methodology thus requires an understanding of the fate of the metallic species and its transformation pathways (transfer to the gas phase, subsequent chemistry at high temperatures, and aerosol formation and growth dynamics) in the combustor. Several different sorbent methodologies used for metals capture are discussed, and a mechanistic description is provided. The need for further experimentation and pilot scale testing is also emphasized.

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“…coal combustion and building materials industries 16 17 . Sea salt 50 51 52 53 from South China Sea was another factor responsible for the increase in the level of these cations (e.g. Na + , Mg 2+ and K + ).…”

Section: Discussionmentioning

confidence: 99%

Urbanization in China drives soil acidification of Pinus massoniana forests

Huang

Zhang

et al. 2015

Sci Rep

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Soil acidification instead of alkalization has become a new environmental issue caused by urbanization. However, it remains unclear the characters and main contributors of this acidification. We investigated the effects of an urbanization gradient on soil acidity of Pinus massoniana forests in Pearl River Delta, South China. The soil pH of pine forests at 20-cm depth had significantly positive linear correlations with the distance from the urban core of Guangzhou. Soil pH reduced by 0.44 unit at the 0–10 cm layer in urbanized areas compared to that in non-urbanized areas. Nitrogen deposition, mean annual temperature and mean annual precipitation were key factors influencing soil acidification based on a principal component analysis. Nitrogen deposition showed significant linear relationships with soil pH at the 0–10 cm (for ammonium N (-N), P < 0.05; for nitrate N (-N), P < 0.01) and 10–20 cm (for -N, P < 0.05) layers. However, there was no significant loss of exchangeable non-acidic cations along the urbanization gradient, instead their levels were higher in urban than in urban/suburban area at the 0–10 cm layer. Our results suggested N deposition particularly under the climate of high temperature and rainfall, greatly contributed to a significant soil acidification occurred in the urbanized environment.

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Analysis of fly ash produced from combustion of refuse-derived fuel and coal mixtures

Cited by 25 publications

References 19 publications

Physical properties and chemical species distributions within municipal waste combuster ashes

Physical properties and chemical species distributions within municipal waste combuster ashes

Control of Toxic Metal Emissions from Combustors Using Sorbents: A Review

Urbanization in China drives soil acidification of Pinus massoniana forests

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