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  2. Deinking - Wikipedia

    en.wikipedia.org/wiki/Deinking

    Deinking is the industrial process of removing printing ink from paperfibers of recycled paper to make deinked pulp. The key in the deinking process is the ability to detach ink from the fibers. This is achieved by a combination of mechanical action and chemical means. In Europe the most common process is froth flotation deinking.

  3. Paper recycling - Wikipedia

    en.wikipedia.org/wiki/Paper_recycling

    The process of waste paper recycling most often involves mixing used/old paper with water and chemicals to break it down. 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.

  4. Melt and pour - Wikipedia

    en.wikipedia.org/wiki/Melt_and_pour

    As with the rebatching method, it can be considered a misnomer to refer to the melt and pour process as soap making. The process has much in common with candle making using meltable wax which, using a similar process, can be scented, dyed, and shaped on a small or large scale of production. Other processes used by soapers are cold process, hot ...

  5. Paper chemicals - Wikipedia

    en.wikipedia.org/wiki/Paper_chemicals

    Chemical pulping involves dissolving lignin in order to extract the cellulose from the wood fiber. The different processes of chemical pulping include the Kraft process, which uses caustic soda and sodium sulfide and is the most common; alternatively, the use of sulfurous acid is known as the sulfite process, the neutral sulfite semichemical is treated as a third process separate from sulfite ...

  6. Environmental impact of paper - Wikipedia

    en.wikipedia.org/wiki/Environmental_impact_of_paper

    Different paper mills are structured for different types of paper, and most “recovered office paper can be sent to a deinking mill”. [78] A deinking mill serves as a step in the recycling paper process. This type of mill detaches the ink from the paper fibers, along with any other excess materials which are also removed from the remaining ...

  7. Reuse - Wikipedia

    en.wikipedia.org/wiki/Reuse

    One way to address this is to increase product longevity; either by extending a product's first life or addressing issues of repair, reuse and recycling. [2] Reusing products, and therefore extending the use of that item beyond the point where it is discarded by its first user is preferable to recycling or disposal, [3] as this is the least energy intensive solution, although it is often ...

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  9. Kraft process - Wikipedia

    en.wikipedia.org/wiki/Kraft_process

    The kraft process (also known as kraft pulping or sulfate process) is a process for conversion of wood into wood pulp, which consists of almost pure cellulose fibres, the main component of paper. The kraft process involves treatment of wood chips with a hot mixture of water, sodium hydroxide (NaOH), and sodium sulfide (Na 2 S), known as white ...

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