环境工程学报2013，Vol.7Issue(2)：759-764,6.
pH、接种量及固形物含量对氧化亚铁硫杆菌LX5煤炭生物脱硫的影响
Effect of pH, inoculation and coal burden on bio-desulfurization of coal by Acidithiobacillus ferrooxidans LX5
摘要
Abstract
Great attention has been paid to the air pollution caused by combustion of high sulfur coal. Bio-desulfurization performances of Acidithiobacillus ferrooxidans LX5 at various pH, inoculation and coal burden were evaluated through batch experiment. In a strong acid culture for 15 days, when initial pH were 2.0, 2.5, 3.0 and 4. 0, the desulfurization efficiency by strain LX5 quickly reached 43. 1% , 73. 3% , 61. 9% and 37.3% , respectively. When the batch cultures were carried out 5, 10 and 15 ml. of bacterial suspension, the maximum desulfurization efficiencies by strain LX5 were 44. 2% , 68. 1% and 72. 2% , respectively. Different coal loads had strong influence on the bio-desulfurization performance of strain LX5. The maximum desulfurization efficiencies under the coal loads of 5% , 10% and 15% were 73. 1% , 72.2% and 56.3% , respectively. The optimal conditions of bio-desulfurization by LX5 were initial pH of 2. 5 , inoculation of 10% and loads of 10% , respectively. A mean desulfurization efficiency of 69.2% , especially for pyrite sulfur removal efficiency of 78% were achieved in a 5 L sequencing batch reactor.关键词
嗜酸性氧化亚铁硫杆菌/煤炭/脱硫/反应器Key words
Acidithiobacillus ferrooxidans LX5 / coal/ desulfurization / reactor分类
资源环境引用本文复制引用
刘玉娇,杨新萍,张德伟,王世梅..pH、接种量及固形物含量对氧化亚铁硫杆菌LX5煤炭生物脱硫的影响[J].环境工程学报,2013,7(2):759-764,6.基金项目
江苏省自然科学基金资助项目(BK2008332) （BK2008332）
国家自然科学基金资助项目(21077054) （21077054）
