Reuse recycle

Question

Hello!

In the end of a process i have materials that i recycle/reuse again (e.g, remaining ammonia). I guess it is a loop, for another same process. How do i model them? As i understand i do not put them as wastes. But how i show that they are reused? In the avoided products? Do i show that i use less ammonia?

E.g., i need 2 kg ammonia to produce 1 kg product, and there is in the end 0.5 kg. What do i do with this remaining?

Do i have to consider my model? Apos or cut off?

Do i input

A. 2kg ammonia and avoided 0.5 kg ammonia?

B.  1.5 kg anmonia in the input?

C. Just 2kg ammonia and nothing else?

Answer 1

Hi,

good questions. Options A and B will lead to the same result. It is up to you how to model it. For transparency, it is better to have an internal loop, especially if you one day have environmental burdens for the "recycling" step. How to model recycling can look like this https://greendelta.github.io/openLCA2-manual/allocation.html?highlight=recyc#allocation-for-recycling

Hope this helps

Comments

Thank you very much for your answer
However, in this case is not so much about recycling as in the file, because i do not use electricity or have wastes to model my recycled ammonia. It is more about recirculation i think. That s why i am confused... Thank you