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
  • [21] Mercury capture by native fly ash carbons in coal-fired power plants
    Hower, James C.
    Senior, Constance L.
    Suuberg, Eric M.
    Hurt, Robert H.
    Wilcox, Jennifer L.
    Olson, Edwin S.
    PROGRESS IN ENERGY AND COMBUSTION SCIENCE, 2010, 36 (04) : 510 - 529
  • [22] Accelerated screening of arsenic and selenium fractions and bioavailability in fly ash by microwave assistance
    He, Kai-Qiang
    Yuan, Chun-Gang
    Shi, Meng-Dan
    Jiang, Yang-Hong
    ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY, 2020, 187
  • [23] Acid Stabilization of Fly Ash from Coal Fired Power Plants
    Xiang, Wei
    Li, Ying
    PROCEEDINGS OF THE 2015 INTERNATIONAL FORUM ON ENERGY, ENVIRONMENT SCIENCE AND MATERIALS, 2015, 40 : 615 - 618
  • [24] Heavy metals in fly ash from a coal-fired power station in Poland
    Smolka-Danielowska, D.
    POLISH JOURNAL OF ENVIRONMENTAL STUDIES, 2006, 15 (06): : 943 - 946
  • [25] An overview for DFT application on arsenic behavior in coal-fired power plants
    Xing, Jiaying
    Wang, Chunbo
    Anthony, Edward J.
    FUEL, 2023, 353
  • [26] Leaching characteristics of heavy metals in fly ash from different ESPs of coal-fired power plant
    Gong, Xun
    Yao, Hong
    Zhang, Dan
    Qiao, Yu
    Li, Lin
    Xu, Minghou
    PROCEEDINGS OF THE 6TH INTERNATIONAL SYMPOSIUM ON COAL COMBUSTION, 2007, : 890 - 895
  • [27] THE COMPRESSIVE BEHAVIOUR OF AGGREGATES CEMENTED WITH FLY ASH COLLECTED FROM COAL-FIRED POWER PLANTS
    Rotaru, Ancuta
    Boboc, Vasile
    Taranu, Nicolae
    Abdelhadi, Monther
    Boboc, Andrei
    Banu, Oana-Mihaela
    REVISTA ROMANA DE MATERIALE-ROMANIAN JOURNAL OF MATERIALS, 2019, 49 (01): : 141 - 147
  • [28] Increasing mercury risk of fly ash generated from coal-fired power plants in China
    Chen, Qing
    Chen, Long
    Li, Jiashuo
    Guo, Yaqin
    Wang, Yongjie
    Wei, Wendong
    Liu, Chang
    Wu, Jiayuan
    Tou, Feiyun
    Wang, Xuejun
    Yang, Yi
    JOURNAL OF HAZARDOUS MATERIALS, 2022, 429
  • [29] Potential environmental risk of trace elements in fly ash and gypsum from ultra-low emission coal-fired power plants in China
    Han, Deming
    Xu, Liwen
    Wu, Qingru
    Wang, Shuxiao
    Duan, Lei
    Wen, Minneng
    Li, Zhijian
    Tang, Yi
    Li, Guoliang
    Liu, Kaiyun
    SCIENCE OF THE TOTAL ENVIRONMENT, 2021, 798
  • [30] Leaching behavior of arsenic and selenium in coal fly ash by aging treatment and cement mixing
    Seki, Tsugumi
    Ogawa, Yasumasa
    Ibi, Koki
    Chida, Taiji
    Inoue, Chihiro
    Niibori, Yuichi
    JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY, 2023, 60 (10) : 1169 - 1181
12345