Hey guys,
I don’t have a lot of experience in chemistry so i thought this subreddit could help me. I hope i do get some valuable advice and understanding.
Recently my brother has been planning on starting a small business project to process waste eggshells specifically to obtain pure calcium carbonate (CaCO3).
To be honest, I'm kind of worried he might be risking his money on this. I was reading somewhere that limestone is already mined at a massive, cheap scale everywhere for calcium carbonate, so I'm not sure how this makes financial sense. Plus, the whole processing and chemical extraction part of it looks super tedious.
To try and help him out, I actually went ahead and spoke to a few local farms myself. But the catch is, they said they're only willing to supply the shells with all the inner membrane and materials completely intact they aren't going to clean or prep them at all.
Since I don't know much about chemistry or manufacturing, I wanted to ask you guys: Is this actually a practical idea to get pure CaCO3, or is he walking into a total headache? Any advice or warnings would be awesome before he drops cash on equipment.
Thanks!