MINERAL COMPONENTS AND HEAVY METAL POLLUTION CHARACTERISTICS IN WASTE INCINERATION FLY ASH IN FUZHOU

ZHANG Yuchen; CHEN Xiaoduo; GUI Si; SU Hua; ZHANG Weifang; LIU Changqing; WU Chunshan; ZHENG Yuyi

doi:10.13205/j.hjgc.202208014

Volume 40 Issue 8

Nov. 2022

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2022 > 40(8): 102-109

ZHANG Yuchen, CHEN Xiaoduo, GUI Si, SU Hua, ZHANG Weifang, LIU Changqing, WU Chunshan, ZHENG Yuyi. MINERAL COMPONENTS AND HEAVY METAL POLLUTION CHARACTERISTICS IN WASTE INCINERATION FLY ASH IN FUZHOU[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(8): 102-109. doi: 10.13205/j.hjgc.202208014

Citation:

ZHANG Yuchen, CHEN Xiaoduo, GUI Si, SU Hua, ZHANG Weifang, LIU Changqing, WU Chunshan, ZHENG Yuyi. MINERAL COMPONENTS AND HEAVY METAL POLLUTION CHARACTERISTICS IN WASTE INCINERATION FLY ASH IN FUZHOU[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(8): 102-109. doi: 10.13205/j.hjgc.202208014

Citation:

ZHANG Yuchen, CHEN Xiaoduo, GUI Si, SU Hua, ZHANG Weifang, LIU Changqing, WU Chunshan, ZHENG Yuyi. MINERAL COMPONENTS AND HEAVY METAL POLLUTION CHARACTERISTICS IN WASTE INCINERATION FLY ASH IN FUZHOU[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(8): 102-109. doi: 10.13205/j.hjgc.202208014

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MINERAL COMPONENTS AND HEAVY METAL POLLUTION CHARACTERISTICS IN WASTE INCINERATION FLY ASH IN FUZHOU

doi: 10.13205/j.hjgc.202208014

ZHANG Yuchen^1,2,3,4,5,
CHEN Xiaoduo¹,
GUI Si¹,
SU Hua¹,
ZHANG Weifang^{1,2,3,4
,
,},
LIU Changqing^2,3,6,
WU Chunshan^1,2,3,4,
ZHENG Yuyi^1,2,3,4

1. College of Environmental Science and Engineering, Fujian Normal University, Fuzhou 350007, China;
2. Institute of Environmental Science, Fujian Normal University, Fuzhou 350007, China;
3. Urban Waste Resource Technology and Management Fujian University Engineering Research Center, Fuzhou 350007, China;
4. Key Laboratory of Resource Cycle and Pollution Control of Fujian Province, Fujian Normal University, Fuzhou 350007, China;
5. Fujian Provincial Key Laboratory of Coastal Basin Environmental Measurement and Control, Fujian Polytechnic Normal University, Fuqing 350300, China;
6. College of Geography Science, Fujian Normal University, Fuzhou 350007, China

Received Date: 2021-11-29
Publish Date: 2022-11-08

Abstract

Abstract

This study collected fly ash from an incineration power plant in Fuzhou, analyzed and compared the mineral components and heavy metal pollution characteristics in different areas in China. The results showed that the main mineral included the soluble chloride salts(NaCl, KCl) and insoluble chloride salts(AlOCl), apart from CaCO₃ and SiO₂. The order of heavy metal total amount was Zn>Pb>Cu>Cd>Cr>Ni, and the total amount of Zn and Pb was higher, the same as that in some other areas in China; the leaching concentration of Pb exceeded the standard limit, GB 16889—2008 in the leaching toxicity test. The morphological analysis also showed that the unstable state of Cd (83.3%) and Cu (66.2%) accounted for high proportions, and that of Pb (36.6%) and Zn (47.0%) also accounted for certain proportions. Compared with the short-term leaching and the types of extractants (UPW, acetic acid and HCl), 5 mol/L HCl had a significant leaching effect under the long-term leaching condition, and the leaching concentrations of Zn and Pb significantly rose, and Zn leaching concentration was the highest in all heavy metal elements; the leaching concentrations of Cu, Cd, Cr, and Ni were relatively lower under the influence of total amount and speciation of heavy metal. Therefore, long-term storage of fly ash in the environment still possessed a high potential risk. The mineral components and heavy metal pollution characteristics of fly ash in different areas have certain universal laws and regional characteristics, which can provide data support for the development of fly ash immobilization and stabilization methods.
- fly ash,
- heavy metal,
- leaching behavior,
- speciation,
- mineral component,
- Fuzhou

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References(41)

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