Preliminary Study on the Structural Characteristics of Residue from Rice Straw Burning in Field
HU Lin-chao1, CHEN Li-na1, YIN Yong1, HUANG Zhao-qin2, 3, DAI Jing-yu2*
1. Changzhou Academy of Environmental Science, Changzhou 213022, China 2. College of Resources and Environmental Sciences, Nanjing Agricultural University，Nanjing 210095，China 3. The City Vocation College of Jiangsu，Nanjing 210036，China
Abstract：Because of their special structural characteristics, straw burning residues (biochar) have important impacts on the soil carbon sequestration and the transport and transformation behavior of pollutants. In this paper, a series of qualitative and quantitative analysis methods such as scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) have been used to study the basic physical and chemical properties and structural features of rice straw burning residues generating at different incineration intensity in field. The results show that: the basic physical and chemical properties of straw burning residues from field were closely associated with the burning intensity. The higher the burning intensity, the lower the TOC content. Meanwhile, the order degree of carbon atoms in the resulting residue increased. Wherein the fatty component of rice straw burning residues is gradually reduced with the burning intensity while the aromaticity of rice straw burning residues is gradually increased. In addition, the organic components in the straw burning residues from field have more significant contribution to the surface area.
Key words：Straw field burning;Structural characteristics;Fourier transformed infrared spectroscopy;X-ray diffraction
胡林潮1，陈莉娜1，尹 勇1，黄兆琴2, 3，代静玉2* . 水稻秸秆田间焚烧残留物的结构特征初探 [J]. 光谱学与光谱分析, 2015, 35(07): 1844-1847.
HU Lin-chao1, CHEN Li-na1, YIN Yong1, HUANG Zhao-qin2, 3, DAI Jing-yu2* . Preliminary Study on the Structural Characteristics of Residue from Rice Straw Burning in Field . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2015, 35(07): 1844-1847.
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