Back to Search
Start Over
Modifying the Refining Energy Consumption of Chemi-Mechanical Pulping with NaOH-Thiourea-Urea Aqueous Solution
- Source :
- BioResources, Vol 10, Iss 3, Pp 4811-4825 (2015)
- Publication Year :
- 2015
- Publisher :
- North Carolina State University, 2015.
-
Abstract
- To reduce the refining energy consumption of chemi-mechanical pulping, treatment with NaOH-thiourea-urea aqueous solution was studied in this work. By means of single-factor experiments, the effects of alkali dosage, soaking time, and freezing time were evaluated. It was found that the optimal conditions were an alkali dosage of 8%, soaking time of 45 min, and freezing time of 105 min. The results revealed that refining energy consumption could be reduced by approximately 40% under optimal conditions compared with that of alkaline peroxide mechanical pulp, while other pulping or paper-making properties were similar. There were no significant effects on the structure of the functional groups, the crystalline region of the pulp, or the whole structure of the treated wood chips. However, damage to single wood fibers on the chips treated in NaOH-thiourea-urea aqueous solution was more obvious.
- Subjects :
- Environmental Engineering
Aqueous solution
Pulp (paper)
lcsh:Biotechnology
Inorganic chemistry
Bioengineering
Alkaline peroxide
NaOH-thiourea-urea aqueous solution
Energy consumption
engineering.material
APMP
Alkali metal
chemistry.chemical_compound
stomatognathic diseases
Refining energy consumption
chemistry
Thiourea
lcsh:TP248.13-248.65
Urea
engineering
Chemi-mechanical pulping
Waste Management and Disposal
Refining (metallurgy)
Nuclear chemistry
Subjects
Details
- Language :
- English
- ISSN :
- 19302126
- Volume :
- 10
- Issue :
- 3
- Database :
- OpenAIRE
- Journal :
- BioResources
- Accession number :
- edsair.doi.dedup.....5195c5272bf184089bad47b75ece88bf