LEACHING BEHAVIOR AND BIOAVAILABILITY OF ARSENIC AND SELENIUM IN FLY ASH FROM COAL-FIRED POWER PLANTS

被引：0
|
作者：
Yuan, Chun-Gang [1 ]
Yin, Lian-Qing [1 ]
Liu, Song-Tao [1 ]
He, Bin [2 ]
机构：
[1] N China Elect Power Univ, Sch Environm Sci & Engn, Baoding 071003, Hebei Province, Peoples R China
[2] Chinese Acad Sci, State Key Lab Environm Chem & Ecotoxicol, Ecoenvironm Sci Res Ctr, Beijing 100085, Peoples R China
来源：
FRESENIUS ENVIRONMENTAL BULLETIN | 2010年 / 19卷 / 02期
基金：
高等学校博士学科点专项科研基金; 中国国家自然科学基金;
关键词：
fly ash; arsenic and selenium; leaching; sequential extraction; bioavailability; SEQUENTIAL EXTRACTION; HEAVY-METALS; SPECIATION; SEDIMENTS; CHINA;
D O I：
暂无
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
A huge amount of fly ash was always produced by coal-fired power plants every year. Arsenic and selenium were absorbed and accumulated in fly ash during the combustion process of coal, but would be released into the environment again when/if fly ash was disposed. To better understand the mobility and bioavailability of arsenic and selenium in fly ash, one sequential extraction procedure was applied to characterize the species of As and Se. Both in fly ash were divided into 5 fractions: water extractable fraction (F1), acid soluble fraction (F2), reducible fraction (F3), oxidable fraction (F4) and residual fraction (F5). The fly ash samples from both the conventional pulverized coal (PC) and the circulating fluidized bed (CFB) combustor were analyzed. The results demonstrated that 71-84% of As and about 96% of Se were present in the extractable fractions (F1+F2+F3+F4) indicating that both in fly ash from coal-fired power plants have high mobility and bioavailability.
引用
收藏
页码：221 / 225
页数：5
相关论文
共 50 条
  • [1] Leaching characteristics of metals in fly ash from coal-fired power plant by sequential extraction procedure
    Yuan, Chun-Gang
    MICROCHIMICA ACTA, 2009, 165 (1-2) : 91 - 96
  • [2] SEQUENTIAL EXTRACTION OF PALLADIUM IN FLY ASH FROM COAL-FIRED POWER PLANT
    Yuan, Chun-Gang
    Liu, Song-Tao
    Yin, Lian-Qing
    FRESENIUS ENVIRONMENTAL BULLETIN, 2010, 19 (05): : 871 - 875
  • [3] Leaching of elements from bottom ash, economizer fly ash, and fly ash from two coal-fired power plants
    Jones, Kevin B.
    Ruppert, Leslie F.
    Swanson, Sharon M.
    INTERNATIONAL JOURNAL OF COAL GEOLOGY, 2012, 94 : 337 - 348
  • [4] Leaching behavior of selected trace elements in coal fly ash samples from Yenikoy coal-fired power plants
    Akar, Gul
    Polat, Mehmet
    Galecki, Greg
    Ipekoglu, Liner
    FUEL PROCESSING TECHNOLOGY, 2012, 104 : 50 - 56
  • [5] Mercury species and potential leaching in sludge from coal-fired power plants
    Chang, Lin
    Zhao, Yongchun
    Zhang, Yi
    Yu, Xuehai
    Li, Zenghua
    Gong, Bengen
    Liu, Huan
    Wei, Shuzhou
    Wu, Hao
    Zhang, Junying
    JOURNAL OF HAZARDOUS MATERIALS, 2021, 403
  • [6] Leachability of mercury in coal fly ash from coal-fired power plants in southwest China
    Huang, Yiming
    Liu, Jinling
    Wang, Guan
    Wang, Qingfeng
    Zeng, Boping
    Xiao, Zhongjiu
    Sun, Guangyi
    Li, Zhonggen
    FRONTIERS IN ENVIRONMENTAL SCIENCE, 2022, 10
  • [7] FRACTIONATION AND DISTRIBUTION OF ARSENIC IN DESULFURIZATION GYPSUM, SLAG AND FLY ASH FROM A COAL-FIRED POWER PLANT
    Yuan, Chun-Gang
    Jin, Yi
    Wang, Shuya
    FRESENIUS ENVIRONMENTAL BULLETIN, 2013, 22 (3A): : 884 - 889
  • [8] Chemical speciation and leaching characteristics of hazardous trace elements in coal and fly ash from coal-fired power plants
    Zhao, Shilin
    Duan, Yufeng
    Lu, Jincheng
    Gupta, Rajender
    Pudasainee, Deepak
    Liu, Shuai
    Liu, Meng
    Lu, Jianhong
    FUEL, 2018, 232 : 463 - 469
  • [9] Leaching characteristics of metals in fly ash from coal-fired power plant by sequential extraction procedure
    Chun-Gang Yuan
    Microchimica Acta, 2009, 165 : 91 - 96
  • [10] Fly ash characteristics of Spanish coal-fired power plants
    Argiz, C.
    Menendez, E.
    Moragues, A.
    Sanjuan, M. A.
    AFINIDAD, 2015, 72 (572) : 269 - 277
12345