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

页码：221 / 225

页数：5

共 50 条

[31] Effect of Additives on Arsenic, Boron and Selenium Leaching from Coal Fly Ash
Sri Hartuti
Hanum, Farrah Fadhillah
Takeyama, Akihiro
Kambara, Shinji
MINERALS, 2017, 7 (06):
[32] A Biogeochemical Study of Heavy Metal Leaching from Coal Fly Ash Disposed in Yeongdong Coal-Fired Power Plant
Chung, Duk-Ho
Cho, Kyu-Seong
Park, Kyeong-Jin
JOURNAL OF THE KOREAN EARTH SCIENCE SOCIETY, 2011, 32 (02): : 170 - 179
[33] Soil contamination caused by fly ash from coal-fired thermal power plants in India: Spatiotemporal distribution and elemental leaching potential
Luo, Chen
Pajala, Gustav
Yekta, Sepehr Shakeri
Sarkar, Sayantan
Klump, J. Val
Pujari, Paras
Routh, Joyanto
APPLIED GEOCHEMISTRY, 2024, 170
[34] On environmental issues at coal-fired thermal power plants in India and disposal of fly ash
Thakur, DN
Dhar, BB
Sanyal, S
Murty, NBK
Grover, SK
PROCEEDINGS OF THE FIRST WORLD MINING ENVIRONMENT CONGRESS - SELECT PAPERS, 1996, : 331 - 365
[35] Modeling arsenic partitioning in coal-fired power plants
Senior, Constance L.
Lignell, David O.
Sarofim, Adel F.
Mehta, Arun
COMBUSTION AND FLAME, 2006, 147 (03) : 209 - 221
[36] Ash Handling Options for Coal-Fired Power Plants
Morris, Lindsay
POWER ENGINEERING, 2011, 115 (02) : 26 - +
[37] Leaching characteristics of trace elements in hetero-aggregation fly ash from coal-fired power plant
Li, Yang
He, Yong-Lai
Jin, Li-Jun
Liu, Jing-Chao
Hu, Hao-Quan
Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology, 2020, 48 (11): : 1394 - 1401
[38] A review on fly ash from coal-fired power plants: chemical composition, regulations, and health evidence
Zierold, Kristina M.
Odoh, Chisom
REVIEWS ON ENVIRONMENTAL HEALTH, 2020, 35 (04) : 401 - 418
[39] STRONTIUM ISOTOPES AS TRACERS OF AIRBORNE FLY-ASH FROM COAL-FIRED POWER-PLANTS
HURST, RW
DAVIS, TE
ENVIRONMENTAL GEOLOGY, 1981, 3 (06): : 363 - 367
[40] CHEMICAL CHARACTERIZATION OF FLY-ASH FROM COAL-FIRED THERMAL POWER-PLANTS IN INDIA
SADASIVAN, S
NEGI, BS
SCIENCE OF THE TOTAL ENVIRONMENT, 1991, 103 (2-3) : 151 - 158

← 1 2 3 4 5 →