sulfite pulping
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Sulfite process — The sulfite process produces wood pulp which is almost pure cellulose fibers by using various salts of sulfurous acid to extract the lignin from wood chips in large pressure vessels called digesters. The salts used in the pulping process are… … Wikipedia
papermaking — [pā′pər māk΄iŋ] n. the making of paper papermaker n. * * * pa·per·mak·ing (pāʹpər mā kĭng) n. The process or craft of making paper. paʹper·mak er n. * * * Introduction formation of a matted or felted sheet, usually of cellulose fibres,… … Universalium
Pulp (paper) — Fibres in wood pulp Pulp is a lignocellulosic fibrous material prepared by chemically or mechanically separating cellulose fibres from wood, fibre crops or waste paper. Wood pulp is the most common raw material in papermaking. Contents … Wikipedia
Wood pulp — is a dry fibrous material prepared by chemically or mechanically separating the fibers which make up wood. Pulp can be either fluffy or formed into thick sheets. The latter form is used if the pulp must be transported from the pulp mill to a… … Wikipedia
Lignosulfonates — Lignosulfonates, or sulfonated lignin, (CAS number 8062 15 5) are water soluble anionic polyelectrolyte polymers: they are byproducts from the production of wood pulp using sulfite pulping.cite encyclopedia |last=Lebo |first=Stuart E. Jr. |author … Wikipedia
Organosolv — is a pulping technique that uses an organic solvent to solubilise lignin and hemicellulose. It has been considered in the context of both pulp and paper manufacture and biorefining for subsequent conversion of cellulose to fuel ethanol. The… … Wikipedia
wood — wood1 woodless, adj. /wood/, n. 1. the hard, fibrous substance composing most of the stem and branches of a tree or shrub, and lying beneath the bark; the xylem. 2. the trunks or main stems of trees as suitable for architectural and other… … Universalium
Wood — /wood/, n. 1. Grant, 1892 1942, U.S. painter. 2. Leonard, 1860 1927, U.S. military doctor and political administrator. * * * I Hard, fibrous material formed by the accumulation of secondary xylem produced by the vascular cambium. It is the… … Universalium
Wood-pulp paper — is paper made from wood pulp, which is produced from trees by a variety of mechanical and chemical processes. Paper made from wood pulp ranges from toilet paper (obviously a single use product) to newsprint (meant to be used once then recycled),… … Wikipedia
Bleaching of wood pulp — is the chemical processing carried out on various types of wood pulp to decrease the color of the pulp, so that it becomes whiter. The main use of wood pulp is to make paper where whiteness (similar to but not exactly the same as brightness ) is… … Wikipedia
Lignin — or lignen is a complex chemical compound most commonly derived from wood and an integral part of the secondary cell walls of plants.cite encyclopedia |last=Lebo |first=Stuart E. Jr. |author= |authorlink= |coauthors=Gargulak, Jerry D. and McNally … Wikipedia
