|
International Journal of Environment Science and Technology
Center for Environment and Energy Research and Studies (CEERS)
ISSN: 1735-1472 EISSN: 1735-1472
Vol. 11, No. 2, 2014, pp. 357-366
|
Bioline Code: st14037
Full paper language: English
Document type: Research Article
Document available free of charge
|
|
International Journal of Environment Science and Technology, Vol. 11, No. 2, 2014, pp. 357-366
en |
Estimation of atmospheric iodine emission from coal combustion
Wu, D.; Du, J.; Deng, H.; Wang, W.; Xiao, H. & Li, P.
Abstract
Coal combustion is the primary anthropogenic
source of atmospheric iodine, which has important environmental
and health effects. The iodine distribution in Chinese
coals and the atmospheric iodineemission factors of coal-fired
boilers are studied to estimate the iodine atmospheric flux
from coal combustion in China from 1995 to 2009. The
national average iodine content weighted by coal yield fluctuated
from 2.61 mg kg-1 in 1995 to 2.09 mg kg-1 in 2009,
recording an annual decline of 1.42 %. By establishing a
monitoring program, iodine distribution in coal by-products
after the coal is consumed in combustors is measured, and
atmospheric iodine emission factors by sectors are calculated.
Based on the coal consumption by sectors, the annual atmospheric
iodine emission from coal combustion in China
increased at an annual rate of 4.3 %from3031.1 tons in 1995
to 4872.6 tons in 2009. Anthropogenic atmospheric iodine
emission is significantly underestimated, and its environmental
and health effects must be given more attention.
Keywords
Anthropogenic source; Atmospheric flux; Coal consumption; Emission factors
|
|
© International Journal of Environment Science and Technology Alternative site location: http://www.ijest.org
|
|