在现场生物甲化过程中通过脉冲H2注射改善了有机物质的生物降解
M Mahieux1, Q Aemig2, C Richard2
1INRAE, Univ. Montpellier, LBE, 102 Avenue des étangs, F-11100 Narbonne, France; ENGIE, Lab CRIGEN, 4 Rue Joséphine Baker, 93240 Stains, France.
Bioresource technology
|July 12, 2024
概括
在无氧消化 (AD) 中注入 (H2) 显著增加有机物 (OM) 分解. 这一过程被称为现场生物甲化,通过改善有机物生物降解和COD去除,增强甲 (CH4) 生产.
科学领域:
- 环境微生物学 环境微生物学
- 生物化学工程 生物化学工程
- 废物管理 废物管理
背景情况:
- 无氧消化 (AD) 是将有机物 (OM) 转化为甲 (CH4) 的关键过程.
- 在现场生物甲化涉及直接注入 (H2) 来增强OM的微生物转化.
- 在AD中优化OM生物降解对于高效的沼气生产和废物利用至关重要.
研究的目的:
- 为了比较标准无氧消化 (AD) 和现场生物甲化之间的有机物质生物降解.
- 评估注射 (H2) 对有机物降解和化学氧需求 (COD) 消除的影响.
- 在这些过程中评估不同注射剂 (消化器与后消化器) 的有效性.
主要方法:
- 进行了半连续无氧消化和现场生物甲化过程.
- 使用了两种类型的注射剂:来自AD植物的消化器 (D) 和后消化器 (PoD).
- 使用分化方法分析有机物降解,在现场生物甲化过程中注入H2.
主要成果:
- 与AD对照组相比,用H2注射进行现场生物甲化导致COD去除至少是AD的2.5倍 (1.6gCOD对比0.6gCOD).
- 注射显著增强了有机物生物降解.
- 该研究表明,H2注射有助于改善AD系统中OM降解的潜力.
结论:
- 在无氧消化过程中注射是一种有希望的策略,可以增强有机物生物降解.
- 在现场生物甲化可显著提高COD去除效率.
- 这种方法有可能优化生物气生产和废物处理过程.
相关概念视频
00:46Bioremediation
18.2K
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
18.2K
02:13Reduction of Alkenes: Catalytic Hydrogenation
12.0K
Alkenes undergo reduction by the addition of molecular hydrogen to give alkanes. Because the process generally occurs in the presence of a transition-metal catalyst, the reaction is called catalytic hydrogenation.
Metals like palladium, platinum, and nickel are commonly used in their solid forms — fine powder on an inert surface. As these catalysts remain insoluble in the reaction mixture, they are referred to as heterogeneous catalysts.
The hydrogenation process takes place on the...
Metals like palladium, platinum, and nickel are commonly used in their solid forms — fine powder on an inert surface. As these catalysts remain insoluble in the reaction mixture, they are referred to as heterogeneous catalysts.
The hydrogenation process takes place on the...
12.0K