Emissions of air-borne mercury from five municipal solid waste landfills in Guiyang and Wuhan, China

by Z G Li, X Feng, P Li, L Liang, S L Tang, S F Wang, X W Fu, G L Qiu, L H Shang show all authors
Atmospheric Chemistry and Physics ()
Get full text at journal

Abstract

China disposes of bulk Municipal Solid Waste (MSW) by landfilling, resulting in a large quantity of mercury that enters landfills through waste. A detailed study on atmospheric mercury emissions from MSW landfills in China is necessary to understand mercury behavior from this source. Between 2003 and 2006, mercury airborne emissions through different pathways, as well as mercury speciation in Landfill Gas (LFG) were measured at 5MSW landfills in Guiyang and Wuhan, China. The results showed that mercury content in the substrate increased the magnitude of mercury emissions, with the highest emission rate measured at the working face and in uncovered waste areas, and the lowest measured near soil covers and vegetated areas. Meteorological parameters, especially solar radiation, influenced the diurnal pattern of mercury surface-air emissions. Total Gaseous Mercury (TGM) in LFG varied from 2.0 to 1406.0 ng m(-3), Monomethyl Mercury (MMHg) and Dimethyl Mercury (DMHg) in LFG averaged at 1.93 and 9.21 ng m(-3), and accounted for 0.51% and 1.79% of the TGM in the LFG, respectively. Total mercury emitted from the five landfills ranged from 17 to 3300 g yr(-1), with the highest from the working face, then soil covering, and finally the vent pipes.

Cite this document (BETA)

Readership Statistics

14 Readers on Mendeley
by Discipline
 
57% Environmental Science
 
29% Engineering
 
7% Social Sciences
by Academic Status
 
21% Student > Ph. D. Student
 
14% Professor > Associate Professor
 
14% Researcher
by Country
 
7% Germany
 
7% India
 
7% China

Sign up today - FREE

Mendeley saves you time finding and organizing research. Learn more

  • All your research in one place
  • Add and import papers easily
  • Access it anywhere, anytime

Start using Mendeley in seconds!

Sign up & Download

Already have an account? Sign in