Speciation analysis of arsenic in coal and its combustion by-products in coal-fired power plants

HE Kai-qiang; SHI Meng-dan; LI Yan; JIANG Yang-hong; LI Yuan-peng; YUAN Chun-gang

Volume 48 Issue 11

Nov. 2020

Turn off MathJax

Article Contents

Article Navigation > Journal of Fuel Chemistry and Technology > 2020 > 48(11): 1310-1317

HE Kai-qiang, SHI Meng-dan, LI Yan, JIANG Yang-hong, LI Yuan-peng, YUAN Chun-gang. Speciation analysis of arsenic in coal and its combustion by-products in coal-fired power plants[J]. Journal of Fuel Chemistry and Technology, 2020, 48(11): 1310-1317.

Citation:

HE Kai-qiang, SHI Meng-dan, LI Yan, JIANG Yang-hong, LI Yuan-peng, YUAN Chun-gang. Speciation analysis of arsenic in coal and its combustion by-products in coal-fired power plants[J]. Journal of Fuel Chemistry and Technology, 2020, 48(11): 1310-1317.

Citation:

HE Kai-qiang, SHI Meng-dan, LI Yan, JIANG Yang-hong, LI Yuan-peng, YUAN Chun-gang. Speciation analysis of arsenic in coal and its combustion by-products in coal-fired power plants[J]. Journal of Fuel Chemistry and Technology, 2020, 48(11): 1310-1317.

PDF( 6090 KB)

Speciation analysis of arsenic in coal and its combustion by-products in coal-fired power plants

1.
Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science & Engineering, North China Electric Power University, Baoding 071000, China
2.
MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China

Funds:

the National Key R & D Program of China 2018YFB0605101

the Fundamental Research Funds for the Central Universities 2018QN088

More Information

Corresponding author: YUAN Chun-gang, Tel:+86-312-7525512, Fax:+86-312-7525512, E-mail:cgyuan@ncepu.edu.cn
Received Date: 2020-09-10
Rev Recd Date: 2020-09-21

Available Online: 2021-01-23

Publish Date: 2020-11-10

Abstract

Abstract

The speciations of Arsenic (As) in coal will inevitably convert during the combustion process. The As speciations in coal and its by-products are closely related to human health and environmental safety which is urgent to be identified. However, there is a lack of pretreatment procedure and analysis method on the As species in coal-related products in power plants. In this study, the As species in coal, fly ash (FA), and gypsum were successfully determined by high performance liquid chromatography coupled with hydride generation atomic fluorescence spectrometry (HPLC-HG-AFS). The instrument parameters, extract reagents, and pretreatment methods (i.e. ultrasound and microwave-assisted) were optimized. The whole separation time of inorganic As was shorten to 7 min after optimization, with the detection limit of 1.8 and 4.6 ng/g for As(Ⅲ) and As(Ⅴ), respectively. The efficient As extract reagent was the mixture of 1.0 mol/L H₃PO₄ and 0.1 mol/L ascorbic acid solution. Microwave-assisted (2000 W, 80 ℃, 40 min) and ultrasound-assisted (40 kHz, 20 ℃, 40 min) schemes were the optimal extraction methods for coal/FA and gypsum samples, respectively. Under the proposed microwave and ultrasound extraction procedure, the recovery of As(Ⅲ) and As(Ⅴ) could reach to 95.8%/104.5% and 90.6%/89.7%, respectively. The dominant occurrence of As species in coal was As(Ⅴ) with a small percentage of As(Ⅲ), while As(Ⅴ) was the only occurrence form observed in FA and gypsum. It is indicated that revealing the transformation of As(Ⅲ) to As(Ⅴ) is the key for gaseous As capture. The As species distribution investigation provides a scientific insight to the controlling of As emission from power plant.
- arsenic,
- speciation,
- coal,
- combustion by-products,
- HPLC-HG-AFS

FullText(HTML)

References(24)

References

[1]	ZHAO Y C, YANG J P, MA S M, ZHANG S B, LIU H, GONG B G, ZHANG J Y, ZHENG C G. Emission controls of mercury and other trace elements during coal combustion in China: A review[J]. Int Geol Rev, 2018, 60: 638-670. doi: 10.1080/00206814.2017.1362671
[2]	LUO G Q, YU Q, MA J, J, ZHANG B, XIAO L, LUO J, ZHOU T, WANG Y, XU M H, YAO H. Pilot-scale study of volatilization behavior of Hg, Se, As, Cl, S during decoupled conversion of coal[J]. Fuel, 2013, 112: 704-709. http://www.sciencedirect.com/science/article/pii/S0016236113004419
[3]	HE K Q, YUAN C G, SHI M D, JIANG Y H. Accelerated screening of arsenic and selenium fractions and bioavailability in fly ash by microwave assistance[J]. Ecotox Environ Safe, 2020, 187: 109820. https://www.sciencedirect.com/science/article/pii/S0147651319311510
[4]	XU H, ZHANG C, YUAN C L, YU S H, LI Q, FANG Q Y, CHEN G. Study on arsenic adsorption characteristics by mineral elements in simulated flue gas atmosphere[J]. J Fuel Chem Technol, 2019, 47(7): 876-883. https://www.sciencedirect.com/science/article/pii/S1385894716314085
[5]	QIN Y Q, CHEN X L, CHEN H D, LIU H F. Effects of adding CaO on the release and transformation of arsenic and sulfur during coal pyrolysis[J]. J Fuel Chem Technol, 2017, 45(2): 147-156. http://en.cnki.com.cn/Article_en/CJFDTOTAL-RLHX201702003.htm
[6]	DONG J L, GENG X, GAO Z Y, LIU Y F. Adsorption mechanism of trace As on the defect sites of SiO₂ in fly ash[J]. J Fuel Chem Technol, 2018, 46: 1401-1408.
[7]	LIU H, ZHAO Y C, ZHOU Y M, CHANG L, ZHANG J Y. Removal of gaseous elemental mercury by modified diatomite[J]. Sci Total Environ, 2018, 652: 651-659. http://www.ncbi.nlm.nih.gov/pubmed/30380473
[8]	XIE J J, YUAN C G, XIE J, SHEN Y W, HE K Q, ZHANG K G. Speciation and bioaccessibility of heavy metals in PM_2.5 in Baoding city, China[J]. Environ Pollut, 2019, 252: 336-343. http://www.sciencedirect.com/science/article/pii/S0269749118353363
[9]	REID M S, HOY K S, SCHOFIELD J R M, UPPAL J S, LE X C. Arsenic speciation analysis: A review with an emphasis on chromatographic separations[J]. Trac-Trend Anal Chem, 2019, 123: 115770. http://www.sciencedirect.com/science/article/pii/S0165993619304029
[10]	MAHER W, FOSTER S, KRIKOWA F, DONNER E, LOMBI E. Measurement of inorganic arsenic species in rice after nitric acid extraction by HPLC-ICPMS: Verification using XANES[J]. Environ Sci Technol, 2013, 47: 5821-5827. http://europepmc.org/abstract/med/23621828
[11]	TORRES AIGDL, GIRALDEZ I, MARTINEZ F, PALENCIA P, CORNS W T, SANCHEZRODAS D. Arsenic accumulation and speciation in strawberry plants exposed to inorganic arsenic enriched irrigation[J]. Food Chem, 2020, 315: 126215. https://www.sciencedirect.com/science/article/pii/S0308814620300625
[12]	MENON M, SARKAR B, HUFTON J, REYNOLDS C, YOUNG S. Do arsenic levels in rice pose a health risk to the UK population[J]. Ecotox Environ Safe, 2020, 197: 110601. https://pubmed.ncbi.nlm.nih.gov/32302858/
[13]	NARUKAWA T, TAKATSU A, CHIBA K, RILEY KW, FRENCH D. Investigation on chemical species of arsenic, selenium and antimony in fly ash from coal fuel thermal power stations[J]. J Environ Monitor, 2005, 7: 1342-1348. https://pubs.rsc.org/en/content/articlelanding/2005/em/b509817c
[14]	SUN M, LIU G J, WU Q H, LIU W Q. Speciation analysis of inorganic arsenic in coal samples by microwave-assisted extraction and high performance liquid chromatography coupled to hydride generation atomic fluorescence spectrometry[J]. Talanta, 2013, 106: 8-13. http://europepmc.org/abstract/MED/23598089
[15]	XU Z, HU H Y, CHEN D K, CAO J X, YAO H. Determination of inorganic arsenic speciation in municipal solid waste incineration fly ash by high performance liquid chromatography-hydride generation-atomic fluorescence spectroscopy with phosphoric acid as extracting agent[J]. Chin J Anal Chem, 2015, 43: 490-494.
[16]	ZOU H M, ZHOU C, LI Y X, YANG X S, WEN J, SONG S J, LI C X, SUN C J. Speciation analysis of arsenic in edible mushrooms by high-performance liquid chromatography hyphenated to inductively coupled plasma mass spectrometry[J]. Food Chem, 2020, 127033.
[17]	HE K Q, YUAN C G, SHI M D, JIANG Y H, YU S J. Fractions of arsenic and selenium in fly ash by ultrasound-assisted sequential extraction[J]. Rsc Adv, 2020, 10: 9226-9233. http://pubs.rsc.org/en/content/articlelanding/2020/ra/c9ra08481a
[18]	MONTPERRUS M, BOHARI Y, BUENO M, ASTRUC A, ASTRUC M. Comparison of extraction procedures for arsenic speciation in environmental solid reference materials by high-performance liquid chromatography-hydride generation-atomic fluorescence spectroscopy[J]. Appl Organomet Chem, 2010, 16: 347-354. doi: 10.1002/aoc.311
[19]	LEERMAKERS M, BAEYENS W, DE GIETER M, SMEDTS B, MEERT C, DE BISSCHOP H C, MORABITO R, QUEVAUVILLER P. Toxic arsenic compounds in environmental samples: Speciation and validation[J]. Trac-Trend Anal Chem, 2006, 25(1): 1-10. https://www.sciencedirect.com/science/article/pii/S0165993605001706
[20]	GARCIAMANYES S, JIMENEZ G, PADRO A, RUBIO R, RAURET G. Arsenic speciation in contaminated soils[J]. Talanta, 2002, 58: 97-109. https://www.sciencedirect.com/science/article/pii/S003991400200259X
[21]	GAO X B, WANG Y X, HU Q H. Fractionation and speciation of arsenic in fresh and combusted coal wastes from Yangquan, northern China[J]. Environ Geochem Hltha, 2012, 34: 113-122. doi: 10.1007/s10653-011-9395-1
[22]	LIU Z X, HAO Y, ZHANG J, WU S M, PAN Y, ZHOU J Z, QIAN G R. The characteristics of arsenic in Chinese coal-fired power plant flue gas desulphurisation gypsum[J]. Fuel, 2020, 271: 117515. https://www.sciencedirect.com/science/article/pii/S001623612030510X
[23]	LI J Y, WANG J M. Integrated life cycle assessment of improving saline-sodic soil with flue gas desulfurization gypsum[J]. J Clean Prod, 2018, 202: 332-341. https://www.sciencedirect.com/science/article/pii/S0959652618323989
[24]	HUANG Y D, YANG Y H, HU H Y, XU M, LIU H, LI X, WANG X Y, YAO H. A deep insight into arsenic adsorption over γ-Al₂O₃ in the presence of SO₂/NO[J]. Process Combust Inst, 2019, 37: 2951-2957.