week5Paper - Paper Paper Paper is a thin sheet composed of...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Paper Paper • Paper is a thin sheet composed of many fibers which have been somehow pressed together. • Paper making has been going on for thousands of years • Paper can be made of many different organic (usually plant) fibers… wood pulp, hemp, papyrus, cotton, rice etc. Paper • Paper products are a very diverse group with many uses • Cardboard, facial tissues, bathroom tissue writing paper, magazines, coffee cups etc, are all paper products • The are different grades of paper - some higher quality, some lower
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2 Additives • Many things are added to paper to change its characteristics and qualities • Chalk, clay or wax are added to change the texture/consistency or other properties • Rags are added to increase the strength of paper • Many dyes are added to colour the paper • Bleaches are used to whiten paper Paper Making Waste • Paper making produces a certain amount of waste in production, which due to the sulphur content and biological reactions • This can be rather noxious, but it is not particularly hazardous material • Bleaching and other processes require more chemical processing which can produce some toxic/hazardous waste Paper • Paper is mostly also organic fibers, so it has some of the same characteristics as other organic waste • Despite being the electronic age, we still use a considerable amount of paper • Paper is used for many purposes but the main ones are as printed material and packaging.
Background image of page 2
3 • Paper can be landfilled, composted, recycled or incinerated. • Paper is generally not recommended for home composters as it often has inks and other materials that would be detrimental to the final compost Composting • municipal compost programs will accept some papers like facial tissue, paper towel
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 10/20/2010 for the course NATS Nats1840(A taught by Professor M.h.armour during the Fall '10 term at York University.

Page1 / 9

week5Paper - Paper Paper Paper is a thin sheet composed of...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online