沼渣物理特性及沼渣纤维化学成分测定与分析

以反刍动物粪便厌氧发酵生产沼气剩余物沼渣为研究对象，采用振动筛分分组、统计分析、图像处理和Fibertec 2010&M6纤维分析系统分析等方法，对沼渣的物理成分及沼渣纤维化学成分进行了测定分析。研究结果表明，沼渣主要由质量分数为64%的纤维、35%的非矿物质和1%的矿物质组成；沼渣纤维中纤维素、半纤维素、木质素、灰分及其它各成分的质量分数分别为44.8%、21.9%、15.6%和17.7%。从而得出结论：反刍动物粪便厌氧发酵生产沼气后的沼渣中纤维素含量较水稻、小麦和玉米等作物秸秆的高5%以上，半纤维素含量较水稻、小麦和玉米等农作物秸秆低5%。研究结果为沼渣资源化、高值化利用技术研究奠定了基础。

Determination and analysis of physical characteristics and fiber chemical composition of biogas residue

Selecting biogas residue of ruminant feces anaerobic fermentation as the research object, physical composition and fiber chemical composition were determined and analyzed by the methods of the vibration sieving, statistical analysis, image processing and the Fibertec 2010&M6 system etc. Through the experimental study, biogas residue were mainly composed of the fiber, non-metallic minerals, minerals, their mass percentage were 64%, 35% and 1%, respectively; cellulose, hemicellulose, lignin and ash were 44.8%, 21.9%, 15.6% and 17.7% , respectively, in the biogas residue fiber. Conclusion could be drawn that the mass percent of cellulose in the biogas residue, which is the remnant produced by anaerobic fermentation using ruminant feces, was above 5% more than that in rice straw, wheat straw and corn stalk; the mass percent of hemicellulose was 5% less than that in rice straw, wheat straw and corn stalk. This result can provide the base for the technology research on high value application of biogas residue resource.