OPTIMIZATION OF DITHIONITE BLEACHING OF HIGH YIELD BAGASSE PULP
Source abstract
Abstract
Non-wood raw materials are an essential fiber source in regions where forest resources are limited. Therefore, chemi-mechanical high-yield bagasse pulp was prepared and then bleached with a dithionite bleaching agent. One- and two-stage bleaching of the pulp was carried out by using sodium dithionite (Y) as a sole bleaching agent, or after bleaching with hydrogen peroxide to achieve high brightness for the prepared pulp. Different parameters, such as consistency, concentration, temperature, time and pH were investigated. The effect of various additives, such as diethylenetriaminepentaacetic acid (DTPA) as chelating agent or Zn compounds and hexamethylenetetramine to stabilize the bleaching solution, was studied. The effect of dissolved oxygen in liquor was also considered.
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Research context
OpenAlex topics: Lignin and Wood Chemistry · Advanced Cellulose Research Studies · Dyeing and Modifying Textile Fibers
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Cellulose and Paper Department, National Research Centre, 33 El-Bohouth st., Dokki, P.O. 12622, Giza, Egypt
References (26)
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