I need to know approximately the GHG emissions expressed in kg CO2 eq for 1 ton of construction waste by using IPCC 2007 GWP100 impact method. Disposal without recycling, pre-treatment or transport to be taken into account.
By inert waste I mean waste that will not decompose, such as concrete, bricks, mortar etc. that will be deposed to a landfill (or an open space) without separation and any pre-treatment.
I just want to know approximately the emissions of end-of-life phase during a Life Cycle Assessment of a building. I'm interested in kg CO2 eq emissions of 1ton or 1m3 waste which is non recyclable or biodegradable (just deposited to landfill) and the methodology I choose is GWP 100.
This is a bad solution to landfill CDW. It's relative "easy" to use them as secondary row material instead to landfill. This is against the circular economy idea.
It is just for research purpose. It would be very helpful if you have any number to provide, or direct me to any link so I can estimate by myself.
Try to check articles about CDW+LCA:
Waste Manag. 2016 Apr;50:151-72. doi: 10.1016/j.wasman.2016.01.036. Epub 2016 Feb 23. Developments in life cycle assessment applied to evaluate the environmental performance of construction and demolition wastes.
Bovea MD, Powell JC. (review - there are links to the addditional literature sources)
But when you want to find relation between CDW landfilling and GHG emissions - then Kenneth M Towe is right, you need to include transport emissions. There are a lot of LCA data about CO2 emissions from transport sector. I attached one example (table 16).
Thank you for your answers! I know that I should consider also the transport and I have already calculate the emissions of it. The same I did also for the construction phase. Just I want to know the emissions of the waste itself. Using SimaPro or openLCA I get results which are very different for Landfill scenario. That's why I wanted to know approximately the number.
I am trying to understand your question. And I guess a good aproximation is to establish a minimum of emission expected from the transportation. In that case, may you can use a regulation, like a oficial standar, in case the vehicule respects the normativitie for emission, at least you can expect that amount of gases and particles. In the other hand I understand what the others are telling you, it doesnt matter if the waste disposal is in a landfill or in any other place, the emissions mainly came from transportation, and you have to consider the type of vehicle, the distance between the source an the disponsal, among other things related.
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