![]() ![]() Today, 40% of paper pulp is created from wood (in most modern mills only 9–16% of pulp is made from pulp logs the rest comes from waste wood that was traditionally burnt). ![]() Industrialized paper making has an effect on the environment both upstream (where raw materials are acquired and processed) and downstream (waste-disposal impacts). The share of ink in a wastepaper stock is up to about 2% of the total weight. Then it can be made into new recycled paper. It is then cleaned, de-inked (ink is removed), bleached, and mixed with water. It is strained through screens, which remove plastic (especially from plastic-coated paper) that may still be in the mixture. It is then chopped up and heated, which breaks it down further into strands of cellulose, a type of organic plant material this resulting mixture is called pulp, or slurry. The process of waste paper recycling most often involves mixing used/old paper with water and chemicals to break it down. The industrial process of removing printing ink from paper fibres of recycled paper to make deinked pulp is called deinking, an invention of the German jurist Justus Claproth. Paper suitable for recycling is called "scrap paper", often used to produce moulded pulp packaging. Post-consumer waste is material discarded after consumer use, such as old corrugated containers (OCC), old magazines, and newspapers. Pre-consumer waste is a material which left the paper mill but was discarded before it was ready for consumer use. Mill broke is paper trimmings and other paper scrap from the manufacture of paper, and is recycled in a paper mill. There are three categories of paper that can be used as feedstocks for making recycled paper: mill broke, pre-consumer waste, and post-consumer waste. ![]() After repeated processing the fibres become too short for the production of new paper, which is why virgin fibre (from sustainably farmed trees) is frequently added to the pulp recipe. Around two-thirds of all paper products in the US are now recovered and recycled, although it does not all become new paper. Because paper fibre contains carbon (originally absorbed by the tree from which it was produced), recycling keeps the carbon locked up for longer and out of the atmosphere. It has a number of important benefits: It saves waste paper from occupying homes of people and producing methane as it breaks down. The recycling of paper is the process by which waste paper is turned into new paper products. Bin to collect paper for recycling in a German train station ![]()
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