It depends upon the pages, cover and spiral binding materials of the notebook. You need to separate the pages from the spiral binding material and cover first. The white or light coloured papers can be kept in normal recycling bins. About the spiral, if it is made up of metal, then it can be recycled with other household metals. You also have to check the cover material as well. If the cover is made of paper or cardboard, it can go in the bin, but if it is of plastic, the case becomes doubtful.