农业机械学报2017，Vol.48Issue(8)：296-301,6.DOI:10.6041/j.issn.1000-1298.2017.08.034
鸡粪沼渣好氧堆肥颗粒尺度下氧气渗透深度表征
Characterization of Oxygen Penetration Depth during Chicken Manure Digestate and Wheat Straw Co-composting
摘要
Abstract
It is an attempt to characterize of the oxygen penetration depth at the particles scale during chicken manure digestate co-composting wheat straw by Fourier transform infrared microspectroscopy (FT-IRM).It is presented to improve the anaerobic/aerobic co-process mechanism,in order to ensure adequate oxygen supply.The spectral range,spectral resolution and pixel dimensions in the transmission spectra were 750 ～ 4 000 cm-1,16 cm-1 and 6.25 μm × 6.25 μm,and a mean spectrum of 8 scans wasused for the second-derivative analysis with nine smoothing points.Chicken manure digestate aerobic composting samples by freeze-drying treatment should be made into 12 μm slice by using paraffin section technology.Selection of 2 856 cm-1,1 640 cm-1 and 1 568 cm-1,3 001 cm-1 was done to represent aliphatic component and aromaticity,respectively,which were used for deciding the boundary of oxygen penetration depth.The difference curve drops rapidly was regarded as the terminal point of oxygen penetration depth.The oxygen penetration depth of chicken manure digestate particles fluctuated within 7 ～ 20 μm,which was lower than that of pig manure aerobic compost particles.The variation in the oxygen penetration depth can be described by an exponential fitting function.The results indicated that it was feasible to determine the oxygen penetration depth of aerobic composting particles by FT-IRM,but the method and technical parameters should be selected according to the characteristics of different materials.关键词
鸡粪沼渣/好氧堆肥/氧气渗透深度/显微红外成像Key words
chicken manure digestate/aerobic composting/oxygen penetration depth/infrared microspectroscopy分类
农业科技引用本文复制引用
马双双,黄晶,李仁权,孙晓曦,韩鲁佳,黄光群..鸡粪沼渣好氧堆肥颗粒尺度下氧气渗透深度表征[J].农业机械学报,2017,48(8):296-301,6.基金项目
欧盟框架计划项目(690142)、国家国际科技合作专项(2015 DFA90370)和国家重点研发计划项目(2016YFE0112800) （690142）
