Hydrogen Peroxide Bleaching. New Application of Hydrogen Peroxide in Chemical Pulp Bleaching.
نویسندگان
چکیده
منابع مشابه
Mg(OH)2-Based Hydrogen Peroxide Bleaching of Deinked Pulp
Sodium hydroxide (NaOH) has been used as an alkali source in conventional hydrogen peroxide bleaching. In the present work, partial and total replacement of NaOH with magnesium hydroxide (Mg(OH)2) as the alkali source for hydrogen peroxide bleaching of deinked pulp was studied. The bleached pulp was studied with respect to brightness, post color (P.C.) number, and mechanical properties (i.e., t...
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Effluents from pulp and paper mills are highly toxic and are a major source of water pollution. Nearly 250 chemicals have been identified in effluents which are produced at different stages of papermaking. Their toxic nature is derived from the presence of several naturally occurring and xenobiotic compounds which are formed and released during various stages of papermaking. If applied under ap...
متن کاملApplication of Polyoxometalate in Hydrogen Peroxide Bleaching under Acidic Conditions
The modified bleaching sequence OPAPPO from short-sequence bleaching OAP and OQP was studied in an effort to achieve higher quality straw pulp (with brightness 84.5% and acceptable viscosity 669 mL/g), which will be appropriate for more situations than straw pulp as presently produced. Though the OP and PO stages are recognized as the key processes used to increase the pulp’s brightness, additi...
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Bleaching detergent formulations contain environmentally unfriendly bleaching agents (perborates and percarbonates), which cause aquatic eutrophication, although without these compounds detergents are much less efficient for the washing processes. In an effort to replace these compounds, in this study, hydrogen peroxide was generated as a bleaching compound by means of enzymatic reactions. Thre...
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ژورنال
عنوان ژورنال: JAPAN TAPPI JOURNAL
سال: 1998
ISSN: 0022-815X,1881-1000
DOI: 10.2524/jtappij.52.623