Distribution and fate of environmentally sensitive elements (arsenic, mercury, stibium and selenium) in coal-fired power plants at Huainan, Anhui, China

Tang, Quan; Liu, Guijian; Yan, Zhongjiang; Sun, Ruoyu

doi:10.1016/j.fuel.2011.12.052

Cited by 124 publications

(51 citation statements)

References 41 publications

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“…For emission of vapor TEs, the emission that resulted from operation of ESP only (runs 1 and 3 in Table 11 and Table 12) showed lower Hg and Cl compared to when FGD was applied regardless of coal type, but no distinct trend was observed for F. This is contrary to the findings that wet FGD could reduce the emission of volatile TEs as reported in the literature (Córdoba, Ochoa-Gonzalez, et al, 2012;Meij and te Winkel, 2007;Swanson et al, 2013;Tang et al, 2012). The reduction could be achieved because FGD resulted in the cooling of flue gas, allowing the more volatile TEs to condense from the vapor phase (Swaine and Goodarzi, 1995).…”

Section: Tes Behavior In Flue Gascontrasting

confidence: 70%

“…Based on the RE definition that includes ash content in coal, it is speculated that such finding could be due to low ash content (2.3%) in subbituminous coal. Other studies reported higher ash content in coal of 11% in the Netherlands (Meij, 1995), 32.51-36.25% in India (Reddy et al, 2005), 28.7-54.25% in Brazil (Depoi et al, 2008), 15.3-33.2% in Canada (Goodarzi, 2009 and 26.31-30.5% in China (Tang et al, 2012). Ash content influences coal combustion in several aspects.…”

Section: Resultsmentioning

confidence: 96%

“…But many studies have been conducted in countries that rely on coal to generate electricity, such as in China (Chen et al, 2013;Lee et al, 2006;Li et al, 2012;Tang et al, 2012;Wang et al, 2011;Wang et al, 2010;Wang et al, 2008;Zhong et al, 2010), the United States (Nyberg et al, 2009;Swanson et al, 2013), and India (Reddy et al, 2005;Sushil and Batra, 2006;Vejahati et al, 2010). The studies are mainly driven by the increasing number of coal-fired power plants, which leads to higher coal consumption and introduction of stringent regulation such as the Mercury and Air Toxic Standard (MATS) in the United States.…”

Section: Coal-fired Power Plants In Malaysiamentioning

confidence: 99%

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Understanding selected trace elements behavior in a coal-fired power plant in Malaysia for assessment of abatement technologies

Mokhtar

Taib

Hassim

2014

Journal of the Air & Waste Management Association

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The Proposed New Environmental Quality (Clean Air) Regulation 201X (Draft), which replaces the Malaysia Environmental Quality (Clean Air) 1978, specifies limits to additional pollutants from power generation using fossil fuel. The new pollutants include Hg, HCl, and HF with limits of 0.03, 100, and 15 mg/N-m 3 at 6% O 2 , respectively. These pollutants are normally present in very small concentrations (known as trace elements [TEs]), and hence are often neglected in environmental air quality monitoring in Malaysia. Following the enactment of the new regulation, it is now imperative to understand the TEs behavior and to assess the capability of the existing abatement technologies to comply with the new emission limits. This paper presents the comparison of TEs behavior of the most volatile (Hg, Cl, F) and less volatile (As, Be, Cd, Cr, Ni, Se, Pb) elements in subbituminous and bituminous coal and coal combustion products (CCP) (i.e., fly ash and bottom ash) from separate firing of subbituminous and bituminous coal in a coal-fired power plant in Malaysia. The effect of air pollution control devices configuration in removal of TEs was also investigated to evaluate the effectiveness of abatement technologies used in the plant. This study showed that subbituminous and bituminous coals and their CCPs have different TEs behavior. It is speculated that ash content could be a factor for such diverse behavior. In addition, the type of coal and the concentrations of TEs in feed coal were to some extent influenced by the emission of TEs in flue gas. The electrostatic precipitator (ESP) and seawater flue gas desulfurization (FGD) used in the studied coal-fired power plant were found effective in removing TEs in particulate and vapor form, respectively, as well as complying with the new specified emission limits. Implications: Coals used by power plants in Peninsular Malaysia come from the same supplier (Tenaga Nasional Berhad Fuel Services), which is a subsidiary of the Malaysia electricity provider (Tenaga Nasional Berhad). Therefore, this study on trace elements behavior in a coal-fired power plant in Malaysia could represent emission from other plants in Peninsular Malaysia. By adhering to the current coal specifications and installation of electrostatic precipitator (ESP) and flue gas desulfurization, the plants could comply with the limits specified in the Malaysian Department of Environment (DOE) Scheduled Waste Guideline for bottom ash and fly ash and the Proposed New Environmental Quality (Clean Air) Regulation 201X (Draft).

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Section: Tes Behavior In Flue Gascontrasting

confidence: 70%

Section: Resultsmentioning

confidence: 96%

Section: Coal-fired Power Plants In Malaysiamentioning

confidence: 99%

See 1 more Smart Citation

Understanding selected trace elements behavior in a coal-fired power plant in Malaysia for assessment of abatement technologies

Mokhtar

Taib

Hassim

2014

Journal of the Air & Waste Management Association

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“…The metal concentrations in the coal mine soil are lower than those from the power plant, which indicates a higher release ratio of metals from the power plant. Tang et al (2012) reported that approximately 0.3 Mt yr À1 of arsenic were released into atmosphere during coal combustion in the Huainan power plant. The concentrations of metal generally increased with the length of the mining duration, except for Cd and Zn.…”

Section: Resultsmentioning

confidence: 99%

Characterization of Heavy Metals in Soil Near Coal Mines and a Power Plant in Huainan, China

You¹,

Huang²,

Lu³

et al. 2014

Analytical Letters

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The environmental and health hazards posed by heavy metals are significant due to their toxicity and bioavailability. Thirty-two soil samples were collected from residential areas around three coal mines and a power plant to assess the environmental and health implications caused by mining activities. The concentrations of heavy metals in soil were determined by inductively coupled plasma mass spectrometry. To evaluate the risk levels, the geo-accumulation index and health risk assessment were determined. The concentrations of metals in power plant soil were generally higher than those in coal mine soil, suggesting a higher release during coal combustion. The results demonstrate that the soils in the vicinity of Xinzhuangzi Mine and Luohe Power Plant are moderately contaminated by arsenic and cadmium. The analysis of the health risk of the metals indicated that the non-carcinogenic and carcinogenic adverse effects to residents due to heavy metal exposure are negligible. However, more attention should be paid around the power plant for the unacceptable level of carcinogenic risk. Based on the results of the environmental and health risk assessment, priority control components in Huaian have been identified. The study provides a comprehensive assessment of soil heavy metal implications derived from mining activity in this region in China and is helpful for pollution control and environmental management.

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“…When selenate or selenite coexist with other anions such as nitrate (NO 3 − ), sulfate (SO 4 2− ), and perchlorate (ClO 4 − ), biological Se reduction can be inhibited by the electron scavenging of denitrifying bacteria, sulfate-reducing bacteria, or perchlorate-reducing bacteria because most selenate-reducing bacteria are heterotrophic facultative anaerobes which compete for electron donors under anoxic or anaerobic conditions. Another limiting factor might be the drastic change of selenate in the water body due to irrigated agricultural drainage [11], sedimentary soil erosion [3], surface mining [12], coal-fired power plants [13], and so on. Most biological selenate reductions are targeted for either pure culture or up-flow anaerobic sludge blanket process [14].…”

Section: Introductionmentioning

confidence: 99%

Effect of Nitrate and Perchlorate on Selenate Reduction in a Sequencing Batch Reactor

Kim

Hong²,

Choi

2020

Processes

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Selenate removal from a water body is being vigorously debated owing to severe health impact, but inhibitions of coexisting anions have been reported. To suggest a viable treatment option, this study investigates the effect of nitrate and perchlorate on selenate reduction in a laboratory-scale sequencing batch reactor. The experimental design tests how competing electron acceptors (NO3− and ClO4−) and electron donor (acetate) limitations affect selenate reduction in the reactor. Results show that the reactor achieves almost complete selenate reduction within the initial concentration ranges of 0.1–1 mM by enriching selenate-reducing bacteria with appropriate temperature (30 °C) and acclimation period (50 days). We monitored simultaneous selenate and nitrate reduction in the reactor without specific inhibition due to a difference in microbial growth strategy related to electron donor status. Lack of perchlorate-reducing bacteria makes perchlorate addition (0.2 mM) not to be closely associated with dissimilative perchlorate reduction. These results provide information that can help us to understand the effect of competing electron acceptors on selenate reduction and the kinetics of potential parallel reactions in the reactor.

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Distribution and fate of environmentally sensitive elements (arsenic, mercury, stibium and selenium) in coal-fired power plants at Huainan, Anhui, China

Cited by 124 publications

References 41 publications

Understanding selected trace elements behavior in a coal-fired power plant in Malaysia for assessment of abatement technologies

Understanding selected trace elements behavior in a coal-fired power plant in Malaysia for assessment of abatement technologies

Characterization of Heavy Metals in Soil Near Coal Mines and a Power Plant in Huainan, China

Effect of Nitrate and Perchlorate on Selenate Reduction in a Sequencing Batch Reactor

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