Does the below input follow opposite direction approach in LCA? Is it correct?

Question

so that means the waste written below then follows opposite direction approach?

 Input

PE : 0.0022 kg

waste : -0.0002 kg

 Output

fillers : 0.002kg

Answer 1

well you would need to say in addition whether the flow type for each is waste or product (which you can see from the icon e.g.) but the negative waste amount suggests indeed the opposite direction / double negative approach. "Waste" is then be a product flow. And if fillers are a product too, you have a process with two products.

Comments

A better question is what waste modeling approach would this follow:

Input

PE : 0.0022 kg

Incineration good : 0.0002 kg  //(this is a process under municipal solid waste in the existing EF database)

 Output

fillers  : 0.002kg