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最大限度地提高元素硫的产量,使用一个富含硫氧化的细菌联盟在一个料批生物反应器

Masumeh Shaeyan¹, Mohsen Nosrati¹, Behnam Rasekh²

¹Biotechnology Group, Department of Chemical Engineering, Tarbiat Modares University, Tehran, Iran.

Environmental technology

|November 24, 2025

概括

使用富含硫氧化细菌 (SOB) 的生物脱硫提供了一种可持续的硫化 (H2S) 去除方法. 优化条件实现了71%的选择性转化为元素硫,证明了高效和环保的工业替代品.

科学领域:

环境生物技术环境生物技术
生物化学工程是生物化学工程.
工业微生物学工业微生物学

背景情况:

传统的物理化学方法去除硫化 (H2S) 往往是昂贵的和不太可持续的.
生物脱硫为工业气体流提供了一个有希望的环保替代方案.
硫氧化细菌 (SOB) 可以选择性地将硫化物转化为元素硫.

研究的目的:

丰富和应用一种硫氧化细菌 (SOB) 联盟,用于选择性生物脱硫.
优化工艺参数,以最大限度地提高元素硫的产量,并最大限度地减少副产品.
为了评估生物脱硫的效率在一个料批量空运生物反应器.

主要方法:

从硫丰富的环境中隔离和丰富SOB联盟.
利用中央复合设计响应表面方法 (CCD-RSM) 进行过程优化.
在受控的溶氧 (DO),pH和硫化物加载率下运行的Fed-batch空运生物反应器.

主要成果:

低的DO水平 (0.2毫克L-1) 有利于元素硫的生产.
确定了最佳条件:pH 8.5,DO 0.2 mg L-1,硫化物负载率 97.2 mg L-1 h-1.
实现了71%的选择性转化为元素硫和100%的硫化物去除.

结论:

丰富的SOB联盟和优化的生物反应器条件提高了生物硫化效率和选择性.
优化的生物过程具有成本效益,可持续性,并在温和条件下运行.
这种方法为传统的H2S去除技术提供了可行且环保的替代方案.

关键词:

生物硫化生物硫化航空桥梁生物反应器基本硫元素的硫.丰富了财团的财团.硫氧化细菌是一种硫氧化细菌.

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