摘要
综述了丝状硫细菌、光合硫细菌和无色硫细菌 3类氧化硫化物为单质硫的微生物的生理特征与产硫条件 ,以及国内外利用其进行生物脱硫工艺的研究现状 ,指出无色硫细菌体外排硫、氧化硫的效率高 ,每增长 1g细菌细胞至少可产生 2 0 g单质硫 ,更适合于工业化的生物脱硫工艺 .同时总结了生物脱硫新工艺的重要标准和今后研究与应用的方向 ;总结了国内外从酶学和遗传学角度研究生物脱硫过程的分子机理 。
There are three kinds of sulfur bacteria (filaceous sulfur bacteria, synthetic sulfur bacteria and colorless sulfur bacteria), and they could consume sulfide and excrete sulfur intracellularly or extracellularly. The characteristics of these sulfur bacteria, the operational conditions for sulfur producing, and the latest research status of biological sulfide removing processes home and broad were summarized in this paper. It was shown that colorless sulfur bacteria had high sulfur producing rate and twenty grams sulfur could be produced extracellularly while one gram cell weight is increased. Therefore, this kind of bacterium is suitable to be applied in the future industrialized sulfide removing process. The development trend of sulfide removing processes both in research and application, and the key standards of those processes were also summarized. In the author's viewpoint, sulfide removing process could be widely developed in the near future for its low energy consuming, low investment and suitable operational conditions. In addition, the molecular mechanism of biological sulfide removing from the points of enzymology and genetics has been discussed as well. It was indicated that the novel engineering bacteria reconstructed by gene engineering technology would have higher efficiency of sulfide removing.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2003年第3期265-268,275,共5页
Journal of Harbin Institute of Technology
基金
国家自然科学基金资助项目 (5 99780 12 )
黑龙江省自然科学基金资助项目 (E2 0 0 0 2 6) .
关键词
生物脱硫
硫化物氧化细菌
单质硫
biological sulfate removal
sulfur bacteria
sulfur
