Effects of partial lignin extraction on rheological characteristics and combustion performance of high solids bamboo kraft black liquor
Source abstract
Abstract
Abstract This study investigates the impact of lignin extraction on the rheological and combustion properties of high-solids bamboo kraft black liquor (BKBL), focusing on viscosity reduction and silicon interference mitigation. Lignin was extracted from BKBL using CO2 acid precipitation. The effects on viscosity, silicon content, calorific value, and Volumetric Isothermal Expansivity (VIE) were systematically analyzed. Extracting 25 % of lignin reduced the apparent viscosity of BKBL and achieved a 33 % desilication rate. However, this extraction also led to a proportional decrease in calorific value and VIE, with a 15 % extraction resulting in approximately 11 % and 13 % reductions, respectively. An extraction rate of 15–25 % is recommended to balance viscosity reduction and silicon removal with minimal impact on boiler combustion efficiency. This study provides practical insights into optimizing lignin extraction from BKBL, offering significant operational, economic, and environmental benefits for the bamboo kraft pulping industry.
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Research context
OpenAlex topics: Bamboo properties and applications · Lignin and Wood Chemistry · Wood Treatment and Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
College of Bioresources Chemical and Materials Engineering , Shaanxi University of Science & Technology , Xi’an , 710021 , China
National Demonstration Center for Experimental Light Chemistry Engineering Education , Shaanxi University of Science & Technology , Xi’an , 710021 , China
Key Laboratory of Paper Based Functional Materials , China National Light Industry, Shaanxi University of Science & Technology , Xi’an , 710021 , China
Shaanxi Key Laboratory on Paper Technology and Specialty Papers , Shaanxi University of Science & Technology , Xi’an , 710021 , China
Funding
National Natural Science Foundation of China
References (27)
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