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Analysis on the Impact of Composting with Different Proportions of Corn Stalks and Pig Manure on Humic Acid Fractions and IR Spectral Feature

文献类型： 外文期刊

作者： Sun Xiang-ping 1 ; Li Guo-xue 2 ; Xiao Ai-ping 1 ; Shi Hong 2 ; Wang Yi-ming 2 ; Li Yang-yang 2 ;

作者机构： 1.Chinese Acad Agr Sci, Inst Bast Fiber Crops, Changsha 410125, Hunan, Peoples R China

2.China Agr Univ, Coll Resources & Environm Sci, Beijing 100193, Peoples R China

关键词： FTIR;Element analysis;Humic substance;Pig manure composting;Maize straw

期刊名称：SPECTROSCOPY AND SPECTRAL ANALYSIS （ 影响因子：0.589； 五年影响因子：0.504 ）

ISSN： 1000-0593

年卷期： 2014 年 34 卷 9 期

页码：

收录情况： SCI

摘要： Using pig manure and corn straw as raw materials for high-temperature composting, setting three different treatments; C/N 15, C/N 25, and C/N 35. Composting period is 120 days, which contains 30 days for ventilation cycle by forced continuous ventilation. Sampled on 0, 22, 30, 60, 90, 120th days, they were analyzed by elemental analysis and IR spectroscopy to study effect of different lignin content on compost humic acid ( HA) composition and molecular structure. The results showed that the change in composting humic acid C focused on the first 30 days, while after composting, the O/C of compost HA increased, H/C decreased, and N content increased. Low C/N (15) and higher C/N ratio (35) had higher degree of oxidation than the C/N 25 in compost HA. FTIR indicated that the infrared spectrum shapes with different lignin content treatment are similar during the composting process, but the peak intensity is obviously different. Research results proved that the composting stage is more conducive to enhanced aromatic in compost HA. After composting, C/N 15 had less polysaccharide and fat ingredients and more aromatic structural components in compost HA, compared with C/N 25 and 35. In addition, compost HA of C/N 15 had higher degree of humification and its structure was more stable.

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