Abstract

In this study, by using a fluidized bed reactor, anaerobic treatment of young landfill leachate was performed to observe carbon dioxide (CO₂), methane (CH₄) and nitrous oxide (N₂O) emissions. Greenhouse gas (GHG) emissions from an anaerobic fluidized bed reactor (AFBR) were calculated through a developed model based on IPCC approach. During 270 days of operation, it was reported that CH₄ was the major emitted greenhouse gas with the highest values. Also, N₂O and CO₂ have been emitted from an AFBR. To minimize the GHG emissions, a zeolite column reactor was used for the reduction of the GHG emissions during 60 days of operation. Static chamber method was applied to measure the emissions from the zeolite column reactor. It was observed that GHG emissions from leachate treatment was minimized by applying an adsorption process with zeolite. CO₂ emission was 0 at the end of 46 days. N₂O emission was zero at 27th day. The emission of methane was also reduced up to 32%. The emission of CH₄ emission was minimized at nearly 4.75 kg CO₂e/d. Thus, it can be said that zeolite could adsorb CO₂, CH₄ and N₂O gases and minimize GHG emissions.

摘要

在这项研究中，通过使用流化床反应器，对年轻的垃圾填埋场渗滤液进行厌氧处理，以观察二氧化碳（CO ₂），甲烷（CH ₄）和一氧化二氮（N ₂ O）的排放。厌氧流化床反应器（AFBR）的温室气体（GHG）排放量是通过基于IPCC方法开发的模型计算得出的。据报道，在运行的270天中，CH ₄是排放量最高的主要温室气体。另外，N ₂ O和CO ₂已从AFBR发出。为了最大程度地减少温室气体排放，使用了一个沸石塔反应器以减少运行60天期间的温室气体排放。采用静态室法测量沸石柱反应器的排放量。观察到，通过采用沸石的吸附过程，使渗滤液处理产生的温室气体排放最小化。46天结束时，CO ₂排放为0。在第27天，N ₂ O排放为零。甲烷的排放也减少了多达32％。在接近4.75 kg CO ₂ e / d的情况下，CH _4的排放量最小。因此，可以说沸石可以吸附CO ₂，CH ₄和N _2。O气体并最大程度减少温室气体排放。