Feasibility of recycling the filtrate from acidified black liquor for alkaline pulping of golden bamboo grass

To reduce energy consumption, a new pulping process called A-D-E-RC (acidification/desalination/electrolysis/recycle-cooking) was developed by a research group in Guangxi University of China. The present work focuses on the step of recycle cooking (RC) to further investigate the technical feasibilit...

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Bibliographic Details
Published in:Bioresources 2024-08, Vol.19 (3), p.6160-6177
Main Authors: Wang, Jin-hui, Zhu, Tian, Li, Yi-jing, Wang, Qian, Ling, Yi-kai, Chen, Meng-meng, Nong, Guang-zai
Format: Article
Language:English
Subjects:
Acidification
Agricultural production
Alkalinity
Bamboo
Black liquor
Caustic soda
Cooking
Desalination
Electrolysis
Energy consumption
Feasibility studies
fiber materials
Filtrate
Grasses
Hydrochloric acid
Lignin
Liquor
Moisture content
Physical properties
Pulp
Pulping
Raw materials
recirculation
Recycling
Sodium
Technology assessment
Wastewater treatment
Water shortages
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Summary:To reduce energy consumption, a new pulping process called A-D-E-RC (acidification/desalination/electrolysis/recycle-cooking) was developed by a research group in Guangxi University of China. The present work focuses on the step of recycle cooking (RC) to further investigate the technical feasibility of A-D-E-RC methods. Golden bamboo grass was considered as fiber source material for pulp, and it was cooked with the acidic treating of wastewater from black liquor. Then, the pulp obtained from each cooking was made into paper to test the changes in its physical properties. As a result, the pulp yield increased from 43.9% to 50.2%, after re-using acidified black liquor, and the paper’s tear index and tensile index were improved. Therefore, this study demonstrated the feasibility of recycle cooking (RC) fiber materials for pulp applied the acidic treating wastewater from black liquor, and thereby, it further identifies the technical feasibility of A-D-E-RC pulping methods.
ISSN:1930-2126
1930-2126
DOI:10.15376/biores.19.3.6160-6177