Heavy coal combustion as the dominant source of particulate pollution in Taiyuan, China, corroborated by high concentrations of arsenic and selenium in PM10

Xie, Ruikai; Seip, H. M.; Wibetoe, Grethe; Nori, Showan Jafar; McLeod, Cameron W.

doi:10.1016/j.scitotenv.2006.07.004

Cited by 100 publications

(37 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The chlorine in the raw MSW will be initially oxidized into hydrogen chloride (HCl), which in turn aides the vaporization of metals through the formation of gaseous metallic chlorides with relative high equilibrium saturation vapor pressure. The metal vapors will undergo nucleation/condensation upon flue-gas cooling and will form fine particles which are capable of penetrating conventional air pollution control (APC) systems and consequently impose direct health threats to local residents (Zhu et al, 2001;Xie et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Characterization of zinc vapor condensation in fly ash particles using synchrotron X-ray absorption spectroscopy

Cai

Huang

Alhadj-Mallah

et al. 2015

J. Zhejiang Univ. Sci. A

View full text Add to dashboard Cite

Heavy metals released from municipal solid waste incinerators have become a major environmental concern. A comprehensive knowledge of metal vapor condensation in fly ash particles during incineration is essential for alleviating heavy metal toxicity, and for optimizing incineration process parameters and flue-gas cleaning systems. In this paper, the condensation of zinc vapor during flue-gas cooling in a 200 t/d fluidized bed incinerator and a 150 t/d moving grate incinerator was characterized and comparatively studied using high resolution synchrotron X-ray absorption spectroscopy (XAS). Principal component analysis, target transformation, and linear combination fitting were employed to identify zinc species directly from size fractionated fly ash particles. The chemical reaction behaviors of different zinc species were described by thermodynamic equilibrium simulations. Consistent with previous theoretical analysis and laboratory scale tests, the condensation behavior of zinc in an industrial incineration system is mainly affected by the sulfur/chlorine ratio and the inorganic particulates. It is found that zinc chloride is the major zinc species in a moving grate incinerator but willemite dominates in the fluidized bed incinerator. The high sulfur and silica/alumina particle concentration in the fluidized bed system changes the condensation propensity of vapors of Zn compounds. Adjusting the concentrations of SO 2 in flue-gas can inhibit the formation of zinc chlorides. Silica, alumina, aluminosilicates, and calcium-based compounds are potential sorbents for transforming zinc to less harmful species. To prevent toxic zinc species contained in fine particles from escaping into the atmosphere, wet scrubbers are more suitable for cleaning flue-gases in moving grate incineration systems, while improving the efficiency of dust removal is more important for fluidized bed incineration systems.

show abstract

Section: Introductionmentioning

confidence: 99%

Characterization of zinc vapor condensation in fly ash particles using synchrotron X-ray absorption spectroscopy

Cai

Huang

Alhadj-Mallah

et al. 2015

J. Zhejiang Univ. Sci. A

View full text Add to dashboard Cite

show abstract

“…Moreover, the rapid economic growth in recent years has sharply increased coal consumption in Taiyuan: the annual coal consumption is around 25 million tons, of which 9.6 million tons are for energy use, accounting for 95% of the total energy production (Environmental Monitoring Center of Taiyuan, 2004). The amount of coal consumed within such a small area is likely to result in high levels of pollutants (Xie et al, 2006). Furthermore, Taiyuan is located in a basin surrounded by mountains on three sides, and frequent inversions and low wind velocities concentrate pollutant levels (TCEAIP, 2000).…”

Section: Introductionmentioning

confidence: 99%

Levels and distribution of organochlorine pesticides in various media in a mega-city, China

Cheng

Liu

et al. 2009

Chemosphere

View full text Add to dashboard Cite

a b s t r a c tAs one of China's great metropolises, Taiyuan is generally recognized to be one of the most polluted cities in the world. It is affected by pollution from heavy industries, and from organochlorine pesticides (OCPs). In this study, we measured the concentrations of OCPs in various environmental media in Taiyuan. We measured the levels of OCPs in 15 soil samples and 34 samples of respirable particulate matter (PM) (17 of PM 2.5 and 17 of PM 10 ) from urban areas of Taiyuan. Analysis of the composition ratios of OCP residues revealed that dichlorodiphenyltrichloroethane (DDT) and hexachlorocyclohexane (HCH) were the predominant compounds in soil, PM 2.5 and PM 10 . The total DDT concentrations were 1.8-1.0 Â 10 2 ng g À1 in soil, 6.5-1.0 Â 10 3 pg m À3 in PM 2.5 , and 8.5-1.5 Â 10 3 pg m À3 in PM 10 . The total HCH concentrations were 1.4-45 ng g À1 in soil, 5.2-8.0 Â 10 2 pg m À3 in PM 2.5 , and 9.6-8.7 Â 10 2 pg m À3 in PM 10 . Furthermore, source analysis indicated that there was new input of OCPs at some sites. Finally, analysis of the individual OCPs revealed that new OCP contamination was the major problem in Taiyuan. This study suggests that measures should be taken to reduce the levels of OCP residues in order to improve the environmental quality in Taiyuan.

show abstract

“…This situation will persist for several decades until alternative sources of energy are developed and exploited on a commercial scale (Ram et al, 2007). Studies from different countries have shown a significant environmental impact of coal fired power plants with its surroundings (Alastuey et al, 1999;Sharma et al, 2005;Xie et al, 2006). The primary emissions from coal combustion at TPPs are carbon dioxide, nitrogen oxides, sulfur oxides and airborne inorganic particles such as fly ash, soot and other trace gas species.…”

Section: Issn: 2319-7706 Volume 6 Number 10 (2017) Pp 3151-3165mentioning

confidence: 99%

Effect of Air Pollutants on Growth and Yield of Rice (Oryza sativa) and Wheat (Triticum aestivum) Crops around the Coal Based Thermal Power Plant

Malav¹,

Khan²,

Kumar³

et al. 2017

Int.J.Curr.Microbiol.App.Sci

View full text Add to dashboard Cite

Heavy coal combustion as the dominant source of particulate pollution in Taiyuan, China, corroborated by high concentrations of arsenic and selenium in PM10

Cited by 100 publications

References 15 publications

Characterization of zinc vapor condensation in fly ash particles using synchrotron X-ray absorption spectroscopy

Characterization of zinc vapor condensation in fly ash particles using synchrotron X-ray absorption spectroscopy

Levels and distribution of organochlorine pesticides in various media in a mega-city, China

Effect of Air Pollutants on Growth and Yield of Rice (Oryza sativa) and Wheat (Triticum aestivum) Crops around the Coal Based Thermal Power Plant

Contact Info

Product

Resources

About