IEECAS OpenIR  > 黄土与第四纪地质国家重点实验室(2010~)
Leaching of Arsenic, Chromium, and Copper from Coal Fly Ash Treated Soil
Zhang, Qing1,2; Liu, Guijian3; Peng, Shuchuan1; Wang, Jiao3; Li, Hui3
AbstractThe use of coal fly ash for soil amelioration may provide soil enrichment as well as the disposal of fly ash produced from thermal plants. However, when exposed to rainfall, hazardous elements such as arsenic, chromium, and copper in the coal fly ash may be released into the soil and cause environmental pollution. In the current study, continuous leaching experiments were performed on coal fly ash used as a soil ameliorant to investigate the leaching of arsenic, chromium, and copper. The concentrations of the analytes and other elements in leachates from fly ash were determined by inductively coupled plasma mass spectroscopy and X-ray fluorescence spectrometry, respectively. The results indicated that the concentrations of these leached elements varied depending on the distance from the amended soil. In the downstream soil, the concentrations of arsenic and chromium increased with distance of the amended soil. However, the concentration of copper initially increased and then decreased under the same conditions. The maximum average concentrations of arsenic and chromium were three times and five times higher, respectively, than the corresponding background values in water. Moreover, the concentration of arsenic decreased with leaching time in the order of 14 > 2 > 8 h, while the concentrations of chromium and copper decreased according to 2 > 8 > 14 h. These results provide useful information for the safe utilization of coal fly ash.
KeywordAmended Soil Coal Fly Ash Elemental Mobility Inductively Coupled Plasma Mass Spectroscopy Leaching Time
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
WOS Research AreaChemistry
WOS SubjectChemistry, Analytical
WOS IDWOS:000380773000016
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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Hefei Univ Technol, Sch Resource & Environm Engn, Hefei 230009, Peoples R China
2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian, Peoples R China
3.Univ Sci & Technol China, Sch Earth & Space Sci, CAS Key Lab Crust Mantle Mat & Environm, Hefei, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Qing,Liu, Guijian,Peng, Shuchuan,et al. Leaching of Arsenic, Chromium, and Copper from Coal Fly Ash Treated Soil[J]. ANALYTICAL LETTERS,2016,49(13):2146-2156.
APA Zhang, Qing,Liu, Guijian,Peng, Shuchuan,Wang, Jiao,&Li, Hui.(2016).Leaching of Arsenic, Chromium, and Copper from Coal Fly Ash Treated Soil.ANALYTICAL LETTERS,49(13),2146-2156.
MLA Zhang, Qing,et al."Leaching of Arsenic, Chromium, and Copper from Coal Fly Ash Treated Soil".ANALYTICAL LETTERS 49.13(2016):2146-2156.
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