摘要
为了研究煤炭生物脱硫的机制,采用正交试验设计和生物、电化学、化学、物理等处理和分析方法,选取氧化亚铁硫杆菌驯化菌种对煤炭进行生物电化学脱硫研究。结果表明,生物电化学协同脱煤中硫氧化还原作用明显;氧化亚铁硫杆菌最高脱硫率可达76.2%,脱硫过程Fe2+浓度降低,Fe3+浓度缓慢上升,细菌表现生长周期规律;电化学调控生物脱硫提供了动力学规律和数据采集区间,细菌电化学脱硫微观机制为外电场循环激励、溶解氧、细菌催化、Fe3+的协同作用。
In order to study mechanism of coal biodesulfurization, coal biodesulfurization was studied by orthogonal experimental designs and based on bioelectricity technology with domestication bacteria seed of Thiobacillus. ferrooxidans （T. f. ）. Biology, electrochemistry, chemistry and physics disposal and analysis ways were used too. The results showed that sulfur in coal was removed clearly by biology cooperated with bioelectricity technology, and Redox was distinctness ; the maximum desulfurization rate was 76.2% by T.f. Fe^2＋ concentration dropped, but Fe^3＋ concentration rised slowly. Orderliness of growth period represented. Bioelectricity desulfurization offered kinetics rules and data collection range;microcosmic mechanism of bioelectricity desulfurization was synergetic effect with exterior electric field cycle bestirring, dissolved oxygen, bacteria catalyst and Fe^3＋.
出处
《化学工程》
EI
CAS
CSCD
北大核心
2007年第6期61-65,共5页
Chemical Engineering(China)
基金
国家自然科学基金资助项目(50374068)
关键词
微生物
电化学
协同作用
氧化还原
脱硫
煤
机理
microorganism
electrochemistry
synergetic effect
redox
desulfurization
coal
mechanism
