表面活性剂对陕北富油煤微生物降解的影响  

Effects of surfactants on microbial degradation oftar-rich coals from northern Shaanxi

作　　者：蔡昕原 申文盛 马丽 刘向荣[1,2] 吴燕 赵顺省 杨再文[1,2] CAI Xinyuan;SHEN Wensheng;MA Li;LIU Xiangrong;WU Yan;ZHAO Shunsheng;YANG Zaiwen(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 MNR,Xi’an 710021,China)

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

出　　处：《西安科技大学学报》2022年第2期317-323,共7页Journal of Xi’an University of Science and Technology

基　　金：国家自然科学基金项目(U1903133,21373158);陕西省重点研发计划项目(S2020-YF-YBGY-0830);国土资源部煤炭资源勘查与综合利用重点实验室项目(KF2021-9)。

摘　　要：利用金雀儿根瘤苍白杆菌对陕北李家畔富油煤进行降解实验。通过单因素和正交试验得到了最优工艺条件为:加煤量为0.7 g/50 mL,接种量为20 mL/50 mL,降解时间为18 d,降解率为17.1%。在最优工艺条件下研究十二烷基硫酸钠(SDS)、直链烷基苯磺酸盐(LAS)和聚乙二醇辛基苯基醚(Triton X-100)3种表面活性剂对煤样生物降解率的影响,结果表明SDS不能促进菌种对煤样的降解,LAS和Triton X-100对降解过程有促进作用,其中Triton X-100增加效果最为明显,降解率提高至34.1%。GC-MS显示降解液相产物的主要成分为烷烃类、羧酸类、酯类和芳香类等小分子物质。Ochrobactrum cytisi was selected to degrade tar-rich coals from Northern Shaanxi.The optimal process conditions were obtained by single factor experiments and orthogonal experiments.The best degrading technological conditions were coal amount of 0.7 g/50 mL,inoculum size of 20 mL/50 mL,incubation time of 18 d and the biodegradation rate reaching 17.1%.Under the best technological conditions,the effects of SDS,LAS and Triton X-100 on biodegradation rates of coal samples were investigated.The results showed that SDS could not promote the degradation of coal samples by bacteria,while LAS and Triton X-100 could promote the degradation process.The increase of Triton X-100 was the most obvious with the degradation rate being 34.1%.GC-MS showed that the degradation liquid products under the action of Triton X-100 mainly contained small molecular substances such as alkanes,carboxylic acids,esters and aromatics.

关 键 词：富油煤 金雀儿根瘤苍白杆菌 微生物降解 表面活性剂 正交试验 

分 类 号：TD849.2[矿业工程—煤矿开采] TQ536[矿业工程—矿山开采]