|
Title
Peracetic acid pulp from annual plants
Authors
Valerii Barbash Vita Poyda and Irina Deykun
Received
February 25, 2011
Published
Volume 45 Issue 9-10 November-December
Keywords
non-wood, organosolv pulp, peracetic acid, black liquor
Abstract
The aim of this study was to carry out a comparative analysis of various kinds of annual plants and to investigate the process of obtaining pulp from these plants by a peracetic acid solution. The microscopic structure and chemical composition of the stalks of non-traditional annual plants for pulp and paper industry, such as wheat, rape, amaranth, lavatery, sverbiga and schavnat, were studied. It was established that their microscopic structure and chemical composition are similar to those of other kinds of non-wood plants, but are, nevertheless, different from those of softwoods and hardwoods. The effect of the duration of oxidative-organosolvent delignification of these plants on the quality of peracetic acid pulp was investigated. It was shown that oxidation of lignin and its transfer into solution occurs with varying intensity for different annual plants. It was also evidenced that the peracetic acid pulps obtained from the investigated plants may be arranged in the following order, according to their physical and mechanical indices: wheat straw – rape – schavnat – sverbiga – amaranth – lavatera. They can be used for manufacturing various kinds of paper and cardboard. Black liquor composition was established after peracetic acid cooking of annual plants and the method to be used was suggested.
Link
|
