硫循环过程加速微生物燃料电池驱动的脱系统:低硫酸盐产量和功能微生物的丰富
1Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, MOE), School of Environmental Science and Technology, Dalian University of Technology, No.2 Linggong Road, Dalian 116024, PR China.
Bioresource technology
|March 24, 2025
概括
在硫驱动的微生物燃料电池中添加化 (CP) 和γ-FeOOH,显著提高了酸盐的去除和电子利用. 这种新的方法也大大减少了有问题的硫酸盐生产,提高了整体效率.
科学领域:
- 环境科学 环境科学
- 电化学 电化学 电化学
- 微生物学 微生物学
背景情况:
- 双室微生物燃料电池 (MFC) 使用硫粉进行正极脱,提供了一个经济和环保的解决方案.
- 然而,低室电子利用率 (ACE) 和高硫酸盐 (SO42−) 生产阻碍了它们的实际应用.
研究的目的:
- 解决硫驱动型MFCs的局限性,提出使用化 (CP) 和γ-FeOOH的协同方法.
- 为了提高酸盐去除率 (NRR) 和ACE,同时最大限度地减少SO42−的产生.
主要方法:
- 研究了双室MFC中CP和γ-FeOOH (S-CP-γ-FeOOH系统) 的合作作用.
- 量化NRR,ACE和SO42−含量的变化.
- 分析了对微生物群落和电子转移过程的影响.
主要成果:
- 酸盐去除率 (NRR) 从20.39 ± 0.37%增加到94.11 ± 1.40%.
- 阳极室电子利用率 (ACE) 从11.10 ± 0.76%提高到61.05 ± 7.82%.
- 硫酸盐 (SO42−) 含量减少了61.26%.
结论:
- CP和γ-FeOOH显著增强了细胞内/细胞外电子转移,提高了MFC的性能.
- γ-FeOOH促进了SO42−降解为硫化合物,改善了阳极电子生成.
- 组合的添加剂丰富了氧化硫细菌,促进了减少硫酸盐的细菌,共同增强了NRR.
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