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Study on Pulping Performance of Arund donax cv. Lvzhou No.1 and Pennisetum Sinese in Different Growth Periods
Received:January 11, 2021  
DOI：10.11980/j.issn.0254-508X.2021.06.007
Key Words:Arund donax cv. Lvzhou No.1  Pennisetum Sinese  ultrasonic  pulp performance
Fund Project:国家自然科学基金（31370146）；福建农林大学国际合作与交流项目（KXG15001A）；菌草生态产业协同创新中心攻关课题（K80ND800212）。
Author NameAffiliationPostcode
FANG Zhiyi College of Mechanical and Electrical Engineering， Fujian Agriculture and Forestry University， Fuzhou， Fujian Province， 350000 350000
WANG Xiaoxi College of Life Science， Fujian Agriculture and Forestry University， Fuzhou， Fujian Province， 350000
National Engineering Research Center of JUNCAO Technology， Fujian Agriculture and Forestry University， Fuzhou， Fujian Province， 350000 		350000
LEI Yating College of Life Science， Fujian Agriculture and Forestry University， Fuzhou， Fujian Province， 350000
National Engineering Research Center of JUNCAO Technology， Fujian Agriculture and Forestry University， Fuzhou， Fujian Province， 350000 		350000
YE Dapeng College of Mechanical and Electrical Engineering， Fujian Agriculture and Forestry University， Fuzhou， Fujian Province， 350000 350000
LIU Bin National Engineering Research Center of JUNCAO Technology， Fujian Agriculture and Forestry University， Fuzhou， Fujian Province， 350000 350000
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Abstract:The pulping performance of Arund donax cv. Lvzhou No.1 and Pennisetum Sinese in different growth periods of 1， 2， and 3 years by ultrasonic-assisted pretreatment and cooking process were evaluated. The research results showed that under the same pulping conditions （ultrasonic pretreatment with 4% alkali； sulfidity of 2%； ultrasonic time of 2 h； cooking alkali dosage of 6%， sulfidity of 0； solid-liquid ratio of 1∶4； maximum temperature of 170℃， and holding time of 1 h）， the 3-year-old Pennisetum Sinese was more suitable as a pulp raw material， the unscreened pulp yield was 49.3%， Kappa value was 14.5， viscosity was 850.63 mL/g， brightness was 39.3%. The contents of lignin and reducing sugar in ultrasonic pretreatment liquid were 4.3 g/L and 2.9 g/L， and those in cooking black liquid were 2.9 g/L and 5.7 g/L. tensile index of paper was 56.4 N·m/g， and tearing index was 20.5 mN·m2/g， burst index was 2.35 kPa·m2/g.
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