Whereas a compost pile decomposes aerobically — with oxygen — producing mainly CO2. This depends upon the types and ratio of material included in the compost i.
JDL: The basic system collects the landfill gas and is then flared burned or is converted for energy use by removing all contaminants.
Effectively that means that much of the CH4 generated from our food waste goes uncollected to the atmosphere. That said, I believe that every landfill should construct a landfill gas collection system immediately. This is a very basic answer, but I think it should answer the question as to why food waste is better off in a compost pile than in the local landfill. Liberals always have the dumbest arguments. They also tend to have zero supporting evidence.
As you see in this article, the answer was just a reiteration of what they have already claimed without any empirical evidence. Instead of trying to change peoples minds through fear, which is what this is along with other environmental campaigns that lead to idiotic ideas like trying to tax cyclists.
You know, things you can actually prove? Oliver Wingenter. However, less carbon-dioxide is produced in a landfill. Are you implicitly suggesting that the greater amount of methane that is produced in a landfill more than offsets the benefit from the smaller amount of carbon-dioxide that is produced in a landfill?
Fourth, in the case of animal manure, disposal is often a problem which might result in pollution or odor-related nuisance complaints. Fifth, the composting process results in pathogen destruction. In addition, properly prepared compost has been found to reduce soil-borne plant diseases. These characteristics reduce herbicide, pesticide and fertilizer use.
Like any additional operation, composting requires equipment, labor, and management. While initial investments for a composting operation can be low when existing equipment and facilities are used. This is for instance often the case on small rural enterprises. However, when the volume of material is large, it is likely that existing equipment is not sufficient to meet the demands, or that it requires too much labor.
In this case, purchase of dedicated composting equipment is required. Depending on the composting method selected and the characteristics of the waste stream that is to be composted costs can be become high. On the community level, composting might offer an attractive economic advantage for communities in which the costs of other options are high. The reduced disposal need associated with composting may even be adequate to justify this option. Aerobic biological treatment projects can be used as CDM projects.
This section briefly discusses several examples from within the current CDM portfolio to illustrate some of the possibilities. For instance, a CDM project in Brazil uses aerobic biological treatment to replace anaerobic lagoons.
These lagoons are similar to the example in the anaerobic biological treatment description in that they vent the produced methane directly into the atmosphere.
The lower Global Warming Potential of CO2 than methane leads to a net reduction in greenhouse gas emissions. I Version 8. The project generates revenue through the emission reduction credits and from selling the compost. For such a project the recommended methodology is Avoidance of methane emissions through controlled biological treatment of biomass AMS-III. F Version 8. A third example of a CDM project is a Bangladesh project that composts organic waste at landfill sites.
The project diverts waste with a high organic content to a composting plant. Under this project methane emissions are avoided. For such a project the recommended methodology is Avoided emissions from organic waste through alternative waste treatment processes AM Version These methodologies help to determine a baseline for GHG emissions in the absence of the project i.
Connecting countries to climate technology solutions. Toggle navigation. Breadcrumb Home. Landfill composting Objective:. Waste management. Technology group:. Solid waste.
Advanced paper recycling. Community based. Ecosystem monitoring. Enteric fermentation. Integrated solid waste management. Manure management. Municipal solid waste. Sustainable fertilizers. Tidal energy. Waste Management. Wastewater treatment plant. Introduction Biodegradation is a natural, ongoing biological process that is a common occurrence in both human-made and natural environments.
Feasibility of technology and operational necessities Three composting techniques that are available to compost biosolids are windrow, aerated static pile, and in-vessel composting. In-vessel composting EPA, The technique of in-vessel composting occurs within a contained vessel. Windrow composting In this technique, organic waste is placed into rows of long piles called windrows and are aerated by turning the pile periodically by either manual or mechanical methods.
Aerated static pile EPA, Aerated static pile composting mixes organic waste together in one large pile instead of rows. Operational necessities The micro-organisms which perform the composting process are influenced by their biological, chemical, and physical needs EPA guide. Biological needs In composting, micro-organisms such as bacteria, fungi and actinomycetes play an active role.
Chemical needs The material to be composted determines the chemical environment. The biodegradability of carbon sources differ.
For instance, lignin has a low degradability. In other words, there are only a few types of micro-organisms capable of decomposing lignin. In contrast, sugars are easily biodegraded. Most municipal solid waste and agricultural residues contain adequate amounts of biodegradable forms of carbon.
Therefore, carbon is generally not a limiting factor in the process. A possible limiting factor in the composting process is nitrogen. The other nutrients are usually not a limiting factor. A critical ration in the decomposition rate is the ratio of carbon to nitrogen. The ratio must be established based on available carbon.
Generally, an initial ratio of carbon to nitrogen is considered ideal. The ratio can be influenced by adding nitrogen rich materials such as yard trimmings, animal manure, or biosolids. It also works to add partially decomposed or composted materials.
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