氧化亚铁硫杆菌L1对煤炭中无机硫脱除的研究  

Removement of Inorganic Sulfur from Coal by Acidithiobacillus ferrooxidans L1

作　　者：葛玉凤[1] 徐刚[1] 刘龙[1] 徐小琳[1] 

机构地区：[1]石河子大学化学化工学院,新疆石河子832003

出　　处：《石河子大学学报（自然科学版）》2016年第4期524-528,共5页Journal of Shihezi University(Natural Science)

基　　金：国家自然科学基金项目(21206095)

摘　　要：为探讨生物脱硫技术是一种有效的煤炭脱硫方法。本文研究了氧化亚铁硫杆菌L1对南山高硫煤中无机硫的脱除情况。考察了脱硫前后原煤中硫含量、灰分以及煤热值的变化。研究结果表明,用L1对原煤进行生物脱硫后煤中黄铁矿硫含量由原来的0.48%降低到0.20%,无机硫脱硫率达到67%,灰分含量由原来的6.1%降低到4.3%,煤的热值由原来的6349 cal/g增加到6370 cal/g。并且通过XRD、SEM、TG以及FTIR等分析方法分析了煤炭脱硫前后的结构及成分变化。结果显示原煤脱硫后比脱硫前有更好的性能。Coal biodesulfurization is one of effective methods to reduce sulphur in coals. Selected Acidithiobacillus ferrooxidans L1 could remove inorganic sulfur in coal from Nanshan colliery. Contents of sulfur, and ash and calorific value were investigated in coal. After biodesulphurization with L1, the pyritic sulfur content in coal was reduced from 0.48% to 0.20%, and ash content decreased from 6.1% to 4.3%. Meanwhile desulfurization rate of inorganic sulfur was achieved 67%. However, the calorific value of coal increased from 6349 cal/g to 6370 cal/g. In addition, XRD, TG, SEM and FTIR were applied to detect changes on the structure and composition of coal before and after desulfurization. It showed that coal had a better performance after desulfurization.

关 键 词：生物脱硫 氧化亚铁硫杆菌L1 无机硫 煤炭 

分 类 号：X524[环境科学与工程—环境工程]