I’d be careful that the light from a scanner doesn’t damage the paper/ink.

I’d also be cautious about ‘sealing it’. Do not wrap books in plastic (i.e. hoping to keep it safe) – books have got to breathe.

Safest bet might be a glass fronted wooden cabinet, away from the floor, and not in direct sunlight.

Do not store it in a corrugated cardboard box, as that type of cardboard can be fertile for book lice and these love a bit of old paper and glue.

I’m no expert, though, so there may be more to looking after old books than that.