Another very good article, albeit from 2019, from the excellent magazine REPORTERRE:
From backyard cabins to large-scale urine collection projects, dry toilets are a solution to the exhaustion of our sewage-based sanitation system. What’s more, our dejecta could be recycled, providing us with a valuable source of fertilizer.
At the end of this article, you’ll find a Guide to composting dry toilet by-products.
Read it on the Reporterre.net website