The end state of biodegradation is "mineralization" where complex molecules are fully broken down to simple ones like water and carbon dioxide. Cellulose acetat

The end state of biodegradation is "mineralization" where complex molecules are fully broken down to simple ones like water and carbon dioxide. Cellulose acetate will mineralize as fully as food waste does, but it takes longer than food waste. See e.g. https://onlinelibrary.wiley.com/doi/abs/10.1002/app.1993.070501009 https://onlinelibrary.wiley.com/doi/abs/10.1002/app.1993.070... for a discussion of microbial cellulose acetate mineralization (full article accessible through sci-hub).