Short notes PROLONGED IMPREGNATION OF BAMBOO CHIPSIN PRE-HYDROLYSIS KRAFT PULPING FOR DISSOLVING PULP PRODUCTION
Year: 2025
Type: article
Abstract: The aim of the article was to compare the feasibility of different impregnation processes of chips and production of soluble bamboo pulp by the pre-hydrolysis kraft (PHK) method.The chips made of Bambusa vulgariswere subjected to prolonged or conventional impregnation with white liquor, followed by the pre-hydrolysis, neutralization, kraft cooking and washing stages. The brown pulp was subjected to a bleaching process using an elemental chlorine-free (ECF) sequence. The results showed that prolonged impregnation provided greater delignification and lower reagent consumption than conventional impregnation. The pulp produced from prolonged impregnation with 14% effective alkali (EA) presented the best properties for dissolution, with intrinsic viscosity of 437 dm3/kg, brightness of 88% ISO, xylan content of 3.48% and glycan content of 94.5%. TAC consumption was low for both impregnations. The study concluded that Bambusa vulgaris can be used in the production of dissolving pulp, mainly for viscose grade.
Source: Wood Research
Language: English
Topic: Lignin and Wood Chemistry
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4408155881