publication . Article . 2007

The pulping of esparto grass by sodium monosulfite

Akchiche, Omar; Messaoud, Boureghda;
Open Access Russian
  • Published: 01 Jan 2007 Journal: Химия растительного сырья (issn: 1029-5151, Copyright policy)
  • Publisher: Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования «Алтайский государственный университет»
Abstract
Traditionally, the esparto's limbs, in the manufacturing process of the cellulosic pulps, are delignified according to the process chlorinates alkaline which alternate the action of caustic's soda and chlorine; the reason is that these sheets cannot be free from the silica which they contain that only in strongly alkaline medium. In spite of the relative simplicity of implementation of this process, it does not remain free from grievance about it: low yield, an excessive consumption of bleaching agents (5,4 % of total chlorine) for a whiteness not exceeding 80 points, a significant time of pulping (3,5 h), the pulp's quality is low, difficulties of regenerating ...
Subjects
Medical Subject Headings: stomatognathic systemstomatognathic diseases
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