无氧硫化物去除涉及到生物质,生物硫和溶液之间的复杂相互作用
Rikke Linssen1, Sanne de Smit1, Annemiek Ter Heijne1
1Environmental Technology, Wageningen University P.O. Box 17, Bornse Weilanden 9, 6708 WG, Building Axis z, building nr. 118 6700 AA Wageningen The Netherlands Annemiek.terHeijne@wur.nl.
概括
硫化物氧化细菌 (SOB) 可去除有害的硫化物,但电子转运不仅仅涉及细菌. 生物硫和溶液在这种生物硫化过程中也发挥着关键作用.
科学领域:
- 环境微生物学环境微生物学
- 生物技术是生物技术.
- 生物地质化学生物地质化学
背景情况:
- 生物硫化利用硫化氧化细菌 (SOB) 将有害的硫化物转化为硫.
- 在这个过程中,硫化物去除发生在氧气消耗之前,这表明中间电子穿.
- 以前,只有SOB被认为是主要的电子穿器.
研究的目的:
- 研究生物硫化过程中电子穿的机制.
- 为了识别参与硫化物去除和电子转移的SOB以外的组件.
- 了解生物硫和溶液在氧降解电位 (ORP) 变化中的作用.
主要方法:
- 在批量中进行无氧硫化物去除试验.
- 监测硫化物度和氧降低潜力 (ORP).
- 分析硫化物,生物硫和溶液之间的相互作用.
主要成果:
- SOB在两个不同的步骤中去除硫化物,第二步降低ORP.
- 生物硫和溶解物被确定为电子穿的重要贡献者.
- 即使在完全去除硫化物后,ORP也增加,与硫化物去除能力相关.
- 有机醇/二硫化物氧化还原对被假设参与电子穿.
结论:
- 生物硫化中的电子穿是一种复杂的过程,涉及SOB,生物硫和溶液.
- 这些成分的相互作用会影响硫化物去除过程中的ORP动态.
- 对有机醇/二硫化物氧化还原对进行进一步的研究是有必要的,以充分阐明电子穿机制.
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