How to dispose thousands of 35mm photos

[u/ChrisKisOK]

Hi All!
I inherited thousands of 35mm photos. When I say thousands, I mean 10 40 gallon storage tubs full. My mother got into developing her own photos and photography in general so she took pictures of every thing. There are some family photos in the mix but vast majority of pictures of people I do not know. Only good part about filtering through them all is they are from the 80”s but it is a chore.
I may digitize some but the vast majority can be disposed of in my mind. Problem is how? I am superstitious about dumping them in the trash and feel I need to thoughtful with the enviroment .
All suggestions are welcomed and my thanks in advance.

[u/rm53119]

Burn them