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Fuller's earth is the most common spelling today, but both fullers earth and fullers' earth remain in wide use. [4] Fuller's earth is also known by the following other names: Bleaching clay, [5] probably because fulling whitened the cloth. Whitening clay, particularly when used to treat facial pigmentation, such as melasma.
Recycling paper decreases the demand for virgin pulp and thus reduces the overall amount of air and water pollution associated with paper manufacture. Recycled pulp can be bleached with the same chemicals used to bleach virgin pulp, but hydrogen peroxide and sodium hydrosulfite are the most common bleaching agents. Recycled pulp, or paper made ...
Recycled pulp can be bleached with the same chemicals used to bleach virgin pulp, but hydrogen peroxide and sodium hydrosulfite are the most common bleaching agents. Recycled pulp, or paper made from it, is known as PCF (process chlorine free) if no chlorine-containing compounds were used in the recycling process. [20]
In the past, the battery and rare earth recycling industry has relied on two other standard practices, Sauve said. One treats the incoming material with solvents and the other uses heat to melt ...
The deinking and recycling of paper require less bleaching, resulting in processed chlorine-free (PCF) pulp. The 1990 Earth Day catalyzed the tree-free paper movement, leading to increased use of alternative fibers like kenaf, hemp, bamboo, agricultural residues, and textile industry scraps.
Recycling can be carried out on various raw materials. Recycling is an important part of creating more sustainable economies , reducing the cost and environmental impact of raw materials. Not all materials are easily recycled, and processing recyclable into the correct waste stream requires considerable energy.
Waste valorization, beneficial reuse, beneficial use, value recovery or waste reclamation [1] is the process of waste products or residues from an economic process being valorized (given economic value), by reuse or recycling in order to create economically useful materials.
Fischer is going to an opioid addiction treatment clinic. In Fort Collins, a doctor will meet with him for a half hour and write him a prescription for a month’s supply of buprenorphine, a medication that blunts his cravings for heroin and other short-acting opioids. Fischer has spent a dozen or so years dealing with his addiction.