The effect of hemicellulose pre-extraction on the wood viscoelasticity and its implications on the fiber separation mechanism in Chemi-mechanical pulping

Liu, Rongrong; Sun, Yushuai; Meng, Fansheng; Wang, Yueping; Zhai, Feifan; Li, Qun

doi:10.1016/j.biombioe.2023.106949

Cited by 4 publications

(1 citation statement)

References 55 publications

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“…However, the pulping production for agricultural surplus materials needs a smaller scale and the increasing awareness of environmental friendly; the economic bene t and cost demands for soda pulping have limited the utilization of these materials In recent years, there have been gradually applied the mechanical methods on non-wood ber pulping, in which chemi-mechanical pulping (CMP) has a higher pulping yield and a lower chemical dosage compared to chemical pulping. CMP is operated by softening the material by chemicals and re ning by mechanical force (Liu et al, 2023). Mboowa (2004) has indicated that non-wood ber pulped by chemi-thermo mechanical pulping (CTMP) can be operated under lower chemicals and mechanical force demands to soften lignin and disintegrate the bers.…”

Section: Introductionmentioning

confidence: 99%

Feasibility of Substituting Soda Pulping with High Consistency Kneaded Chemi Mechanical Pulping for Discarded Oyster Farming Bamboo Scaffolding

Sun,

Lai,

et al. 2024

Preprint

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Discarded oyster farming bamboo scaffolding (BS) has the potential to be applied to pulping and papermaking. Thus, this study aims to develop a chemi-mechanical pulping process for the BS with lower chemical and temperature demands through a high-consistency kneader to enhance the feasibility of greener production development. This study applies a factorial experimental design to assess the impact of thermo-alkali pretreating conditions (temperature and NaOH dosage) by analyzing pulping yield, freeness, fiber appearance, and handsheet properties. After the factorial analysis, the temperature and NaOH dosage of thermo-alkali pretreatment both significantly affect the pulp properties, the condition with 125℃ and 7.5% NaOH dosage has the highest accepts ratio, the best capacity of fiber refining, and handsheet properties. Further compared with soda pulping, the kneading process developed by this study can produce a similar fiber to soda pulp and has a higher pulping yield. In summary, the chemi-mechanical pulping process through a high-consistency kneader has a greener process that can promote the application of the BS in pulping and papermaking.

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Section: Introductionmentioning

confidence: 99%