Maybe few people know that not all printed papers are recyclable in the same way.
It depends on inks used.
It depends on glues used.
It depends on how many times you recycle the same paper.
So, first of all, it is important to know how to print, if you want to have the chance to recycle well your printed paper.
(of course we hope that no one book will be destroyed... but it happens!)
So, here it is a link to a website dedicated to recycling of printed paper:
There are useful suggestions about recycling also in the Nordic Swan criteria (see the post below).
My personal opinion: I am not a big fan of the recycled paper.
"Books like flowers" should be made with greener paper! (I prefer to use recycled paper for magazines, newspapers, brochures, etc)