Emission Characteristics of Carbonaceous Particles and Trace Gases from Open Burning of Crop Residues in China
Document Type
Article
Publication Date
1-12-2015
Publication Title
Atmospheric Environment
Volume
123
Issue
Part B
First page number:
399
Last page number:
406
Abstract
Open burning of crop residue is an important source of carbonaceous pollutants, and has a large impact on the regional environment and global climate change. Laboratory burn tests were conducted using a custom-made combustion chamber to determine pollutants (i.e. CO2, CO, PM2.5, organic carbon (OC) and elemental carbon (EC)) emission factors (EFs) of wheat straw, rice straw and corn stalk; the three major agricultural crop residues in China. The average EFs were estimated to be 1351 ± 147 g kg−1 for CO2, 52.0 ± 18.9 g kg−1 for CO, 10.6 ± 5.6 g kg−1 for PM2.5, 4.8 ± 3.1 g kg−1 for OC and 0.24 ± 0.12 g kg−1 for EC. In addition, the effect of fuel moisture was investigated through the controlled burning of wheat straw. Increasing the moisture content decreased the CO2 EF, and increased the EFs of CO, PM2.5 and OC. Based on measurements from this study and nationwide statistics in crop type and area, pollutants emission inventories for crop residue combustion with 1° × 1° resolution were compiled for 2008. Total emissions were 120 Tg CO2, 4.6 Tg CO, 0.88 Tg PM2.5, 0.39 Tg OC and 0.02 Tg EC.
Keywords
Crop residue; Open burning; Emission factor; Combustion chamber
Repository Citation
Ni, H.,
Han, Y.,
Cao, J.,
Chen, L. A.,
Tian, J.,
Wang, X.,
Chow, J. C.,
Watson, J. G.,
Wang, Q.,
Wang, P.
(2015).
Emission Characteristics of Carbonaceous Particles and Trace Gases from Open Burning of Crop Residues in China.
Atmospheric Environment, 123(Part B),
399-406.
http://dx.doi.org/10.1016/j.atmosenv.2015.05.007