通过添加元素硫来增强无氧消化
Zihao Qiao1, Zezhi Chen1, Huijuan Gong2
1State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, PR China.
Bioresource technology
|November 15, 2024
概括
将元素硫 (S) 添加到无氧消化 (AD) 中,通过促进有益的微生物生长,显著增加甲 (CH) 生产. 最佳的S0剂量可以提高生物气产量,但高度可能具有抑制作用.
科学领域:
- 生物技术是生物技术.
- 环境科学 环境科学
- 微生物学 微生物学
背景情况:
- 无氧消化 (AD) 是有机废物处理和生物气生产的关键过程.
- 从AD中提高甲 (CH4) 产量仍然是可持续能源研究的关键挑战.
研究的目的:
- 为了研究元素硫 (S0) 添加在无氧消化过程中对甲产生的影响.
- 阐明S0介导的AD增强背后的微生物和酶机制.
主要方法:
- 无氧消化实验使用葡萄糖作为模型基质进行.
- 在各种度 (20300毫克/升) 中添加了元素硫 (S).
- 分析包括甲产量测量,微生物社区概况和关键功能酶的量化.
主要成果:
- 甲产量在S0剂量从20到300毫克/升时显著增加,峰值分别在20和180毫克/升时增加了2.1倍和2.5倍.
- 此外,丰富了特定的微生物群体 (例如,Dethiobacteraceae,Methanobacterium) 和参与水解和甲基生成的关键酶.
- 在S0度超过300mg/L时,观察到对甲产生的抑制作用.
结论:
- 元素硫 (S) 通过促进协同微生物活动,有效地提高了无氧消化过程中的甲产量.
- 特定细菌和古生物的丰富,以及关键酶,与增加的挥发性脂肪酸和甲产量直接相关.
- 优化的S0加法为提高无氧消化过程的效率提供了一个有希望的策略.
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