微生物修饰提高了天然气合铁溶液的有机硫去除能力
Yu Guo1, Qisong Liu1, Li Liang1
1Research Institute of Natural Gas Technology, PetroChina Southwest Oil & Gasfield Company, No. 218 Tianyan Road, Chengdu 610051, China.
ACS omega
|February 16, 2026
概括
一个新的生物化铁系统通过结合生物和化铁方法来增强天然气脱硫. 这种新的方法有效地去除了硫化,甲基和硫化碳,改善了燃料气体的净化.
科学领域:
- 环境工程 环境工程
- 生物技术是生物技术.
- 化学工程是化学工程的重要组成部分.
背景情况:
- 天然气含有硫化合物 (H2S,COS,MeSH),需要在管道运输时去除.
- 化铁工艺在去除H2S方面具有成本效益,但对于有机硫化合物来说效率低下.
- 生物硫化对于低硫流是有效的,但由于微生物抑制,它与高H2S度作斗争.
研究的目的:
- 开发和评估一种新型的综合生物化铁系统,用于增强气体脱硫.
- 使用集成系统评估H2S,COS和MeSH的去除效率.
- 为了确定化铁溶液中的脱硫微生物的活力和代谢活性.
主要方法:
- 一种脱硫微生物菌株 (TYWJ-1) 的隔离和鉴定.
- 使用Box-Behnken响应表面方法 (RSM) 优化微生物生长条件.
- 通过全基因组分析阐明硫化合物去除机制.
- 生物化铁系统与传统化铁工艺的比较性能评估.
主要成果:
- 生物化铁系统实现了100%的H2S,55.2-55.7%的COS和94.7-96.5%的MeSH去除,超过了传统的化铁 (34.6-35.8%的COS,58.0-59.1%的MeSH).
- 在连续运行10天的时间里,稳定的多硫化合物去除得到维持.
- 隔离的TYWJ-1菌株在化铁溶液中保持活力和代谢活性.
结论:
- 生物化铁系统代表了液相氧化脱硫的重大进步.
- 这种综合技术为各种燃料气体净化提供了更广泛的适用性和卓越的性能.
- 生物化铁系统显示出作为下一代高效天然气脱硫解决方案的前景.
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