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This substitution produces pulp with physical properties that are well suited for printing and notebook paper, tissue products, boxes, and newspapers. [2] It can also be used for making boards resembling plywood or particle board, known called bagasse boards and Xanita boards. These are widely used in the production of partitions and furniture.
Wood-free paper is paper created exclusively from chemical pulp rather than mechanical pulp. [1] Chemical pulp is normally made from pulpwood, but is not considered wood as most of the lignin is removed and separated from the cellulose fibers during processing, whereas mechanical pulp retains most of its wood components and can therefore still be described as wood.
With a 2 ton/day production facility located in Wausau, Wisconsin, AST can also make high quality pulp, glucose, fructose and lignin. With the AST process, lignocellulosic biomass is treated with sulfuric acid, water, butanol and other organic solvents, water, an organic or inorganic acid, and catalyst for one to three hours at 150 to 200 °C.
Tree-free paper, also known as no tree paper, offers an alternative to traditional wood-pulp paper [1] due to its unique raw material [2] composition. This type of paper is considered more eco-friendly especially when evaluating its entire life cycle. Sources of fiber for tree-free paper [3] [4] [5]
Non-wood fibre sources account for about 5–10 percent of global pulp production, for a variety of reasons, including seasonal availability, problems with chemical recovery, brightness of the pulp etc. [16] [34] In China, as of 2009, a higher proportion of non-wood pulp processing increased use of water and energy.
Further purification by bleaching can also be done. Purifying the pulp by bleaching and by alkaline extraction is called alpha or dissolving pulp. This type of pulp is used for speciality papers, for rayon and cellulose film production, and for cellulose derivatives (nitrate and acetate.) [10]
Hemp paper only reached Europe in the 13th century via the Middle East. In Germany it was used for the first time in the 14th century. It was not until the 19th century that methods were established for the production of paper from wood pulp, which were not necessarily cheaper than the hemp paper production but did not need extra production because wood was already there ready to be harvested ...
Dissolving pulp is mainly produced chemically from pulpwood in a process that has a low yield (30 - 35% of the wood). This makes up of about 85 - 88% of the production. [2] Dissolving pulp is made from the sulfite process or the kraft process with an acid prehydrolysis step to remove hemicelluloses. For the highest quality, it should be derived ...