4种细菌降解内蒙古赤峰褐煤的实验研究  

Study on Degradation of Chifeng Lignite of Inner Mongolia by Four Kinds of Bacteria

作　　者：康红丽 刘向荣[1,2] 赵顺省 杨再文[1] 杨征[1] KANG Hong-li;LIU Xiang-rong;ZHAO Shun-sheng;YANG Zai-wen;YANG Zheng(College of Chemistry and Chemical Engineering,Xi′an University of Science and Technology,Xi′an 710054,China;Key Laboratory of Coal Resources Exploration and Comprehensive Utilization of MLR,Xi′an 710021,China)

机构地区：[1]西安科技大学化学与化工学院,西安710054 [2]国土资源部煤炭资源勘查与综合利用重点实验室,西安710021

出　　处：《煤炭技术》2019年第10期130-133,共4页Coal Technology

基　　金：国家自然科学基金(21373158);陕西科技厅中澳合作项目(2013KW17)

摘　　要：利用金雀儿根瘤苍白杆菌、食萘新鞘氨醇菌、粪产碱杆菌和荧光假单胞菌4种细菌对内蒙古赤峰褐煤进行降解实验,通过正交试验得到了上述4种细菌在最优工艺条件下的降解率分别为93.5%、91.8%、90.3%和85.0%。红外光谱分析表明,残煤中N=O、C=O官能团减少,说明细菌可将含N=O、C=O官能团片段降解下来。紫外光谱显示降解后的液体产物中存在含不饱和键的化合物。热重结果显示,细菌降解了煤中结构较松散的部分,煤样的热稳定性提高。The degradation experiments of Chifeng Lignite of Inner Mongolia by Ochrobactrum cytisi,Novospingobium naphthalenivor-ans, Alcaligenes faecalis and Pseudomonas fluorescens were carried out. The best conditions of the degradation were obtained by orthog-onal experiment. Under these conditions, the degradation rates of four kinds of bacteria were 93.5%,91.8%,90.3% and 85.0%,respectively. Infrared spectrum analysis showed that treatment of coal by bacteria causing decrease in N=O and C=O in the residual coal, indicating that the bacteria could decompose the C =O and N =O fragments from the coal macromolecular structures. UV spectrum analysis showed that the liquid products of degradation contain unsaturated compounds. The results of thermogravimetric analysis showed that the bacteria can degrade the loose structure of the coal which contributed to an increase of the thermal stability of the coal sample.

关 键 词：微生物降解 影响因素 正交试验 产物分析 

分 类 号：TQ536[化学工程—煤化学工程]