垃圾填埋场气体加载提升策略:优化适应气候和甲氧化生物系统的长期氧化能力
Jessica Leindorf de Almeida1, Jacopo De Tommaso1, Federico Galli1
1Université de Sherbrooke, 2500 Boul. de l'Université Sherbrooke, Québec J1K2R1, Canada.
Waste management (New York, N.Y.)
|February 1, 2026
概括
在甲氧化生物系统 (MOB) 中优化垃圾填埋场气体提升策略可以加速甲的去除,并减少氧化层所需的大小. 逐渐适应是高效,紧的MOB的关键.
科学领域:
- 环境工程 环境工程
- 生物技术是生物技术.
- 气候变化缓解缓解 气候变化缓解
背景情况:
- 垃圾填埋场的甲 (CH4) 排放构成一个重大的气候变化挑战.
- 甲氧化生物系统 (MOB) 是降低CH4的成本有效解决方案.
- 在MOB中适应阶段需要进一步研究以优化.
研究的目的:
- 为了优化基于堆肥的MOBs的适应阶段.
- 调查受控垃圾填埋气体 (LFG) 提升策略对CH4清除效率的影响.
- 确定升级策略对甲氧化层 (MOL) 所需深度的影响.
主要方法:
- 使用了基于堆肥的MOB的实验室规模列.
- 应用了四种不同的LFG流量增加模式:指数式,线性,第一阶类和常量.
- 监测了CH4去除效率和轴向气体度概况.
- 一个175天的专测试估计了在增加负载下最大的CH4氧化能力.
主要成果:
- 指数式和线性升级策略实现了100%的CH4去除速度比恒流更快.
- 升级策略影响了完全CH4氧化所需的深度.
- 在主动通风下,指数式提升在MOL的前50mm内实现了完全的CH4去除.
- 该研究估计最大氧化率 (Vmax) 为3811gCH4·m-3·d-1和Km为12gCH4·m-3.
结论:
- 控制的LFG提升策略显著提高了MOB的性能.
- 逐渐的适应,特别是指数和线性策略,加速了CH4的去除,并可以减少MOBs的物理足迹.
- 优化适应是设计高效和紧的MOB能够处理高填埋气体负载的关键.
相关概念视频
Oxidation Numbers
42.6K
In redox reactions, the transfer of electrons occurs between reacting species. Electron transfer is described by a hypothetical number called the oxidation number (or oxidation state). It represents the effective charge of an atom or element, which is assigned using a set of rules.
42.6K
Oxidation-Reduction Reactions
75.7K
Oxidation–Reduction Reactions
75.7K
Pyruvate Oxidation
168.8K
After glycolysis, the charged pyruvate molecules enter the mitochondria via active transport and undergo three enzymatic reactions. These reactions ensure that pyruvate can enter the next metabolic pathway so that energy stored in the pyruvate molecules can be harnessed by the cells.
First, the enzyme pyruvate dehydrogenase removes the carboxyl group from pyruvate and releases it as carbon dioxide. The stripped molecule is then oxidized and releases electrons, which are then picked up by NAD+...
First, the enzyme pyruvate dehydrogenase removes the carboxyl group from pyruvate and releases it as carbon dioxide. The stripped molecule is then oxidized and releases electrons, which are then picked up by NAD+...
168.8K
Oxidation of Alcohols
16.1K
In this lesson, the oxidation of alcohols is discussed in depth. The various reagents used for oxidation of primary and secondary alcohols are detailed, and their mechanism of action is provided.
The process of oxidation in a chemical reaction is observed in any of the three forms:
The process of oxidation in a chemical reaction is observed in any of the three forms:
16.1K
Heat Capacities of an Ideal Gas I
4.3K
Heat capacity is the ratio of heat absorbed by the substance corresponding to its temperature change. It is also called thermal capacity and the SI unit of heat capacity is J/K. Whereas, specific heat capacity is defined as the amount of heat necessary to change the temperature of 1 kg of a substance by 1 K and is also called massic heat capacity. Its SI unit is J/kg⋅K.
Molar heat capacity quantifies the ratio of the amount of heat added (or removed) to increase (or decrease) the...
Molar heat capacity quantifies the ratio of the amount of heat added (or removed) to increase (or decrease) the...
4.3K
Heat Capacities of an Ideal Gas II
3.8K
For a system that undergoes a thermodynamic process at a constant volume condition, the heat absorbed is used only to increase the system's internal energy and not for doing any kind of work. While for a system undergoing a thermodynamic process under a constant pressure condition, the amount of heat absorbed is used not only for increasing the internal energy (as a function of temperature) but also for doing some work. The molar heat capacity is the amount of heat required to increase the...
3.8K


