Ethanol pulping of pretreated non-wood fibre materials

Lönnberg, B.; El-Sakhawy, Mohamed; Hultholm, Tom

doi:10.1533/9781845698690.99

Cited by 6 publications

(4 citation statements)

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“…The caustic soda pulping process has been widely used in the pulping of non-wood raw material [18][19][20]. The main component of the cooking liquor is NaOH, sometimes Na 2 CO 3 , the dosage of which depends on the fiber properties.…”

Section: Caustic Soda Pulpingmentioning

confidence: 99%

“…Formic acid and acetic acid are commonly used in organic acid pulping, which can react with lignocellulose to produce the corresponding esters in delignification process [13,18,23,24].…”

Section: Organic Acids Pulpingmentioning

confidence: 99%

“…Chemi-mechanical pulping has the advantages of high pulp yield Pulping and Papermaking of Non-Wood Fibers http://dx.doi.org/10.5772/intechopen.79017 and no need for chemical recovery systems. Table 6 shows the chemical pretreatment conditions and slurry properties of certain non-wood materials [18].…”

Section: Chemi-mechanical Pulpingmentioning

confidence: 99%

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Pulping and Papermaking of Non-Wood Fibers

Liu¹,

Wang²,

Hui³

2018

Pulp and Paper Processing

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In general, the main raw materials of pulp and papermaking industry can be classified into three categories: wood, non-wood, and non-plant (mainly wastepaper), of which non-wood fiber material is an important fiber source in the areas where forest resources are scarce. Nowadays, in the total pulp consumption of the world, the proportions of wood pulp, wastepaper pulp, and non-wood pulp are 63, 34, and 3%, respectively. The effective use of non-wood fiber resources, especially grasses, cereal straws, corn stalks, bamboo, and bagasse, would play a major role in optimizing papermaking raw materials. On the other hand, there are non-wood fibers such as flax, hemp, jute, kenaf, cotton, sisal, and abaca with properties as good as or much better than softwood materials.

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Section: Caustic Soda Pulpingmentioning

confidence: 99%

“…Formic acid and acetic acid are commonly used in organic acid pulping, which can react with lignocellulose to produce the corresponding esters in delignification process [13,18,23,24].…”

Section: Organic Acids Pulpingmentioning

confidence: 99%

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Pulping and Papermaking of Non-Wood Fibers

Liu¹,

Wang²,

Hui³

2018

Pulp and Paper Processing

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“…However, only limited amount of research has been made on the detailed mechanisms that govern defibration and how the tool surface affects these (Dornfeld, Wu 1977;Dornfeld 1981;Lönnberg et al 2007;Tuovinen et. al.…”

mentioning

confidence: 99%

Initiation of wood defibration in groundwood pulping, single asperity indentation and scratching

Heldin

Isaksson

Wiklund

2016

Nordic Pulp &Amp; Paper Research Journal

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SUMMARY:To understand how the energy requirements of the mechanical pulping process can be reduced, the fundamental mechanisms behind fiber separation in Norway spruce were studied experimentally and analytically. Single tip scratching in heated water was used to reproduce initial defibration mechanisms found industrially. The resulting scratches were then compared with surfaces ground in a real industrial process. Moreover, the mechanical behavior of the wood microstructure was monitored with X-ray computed microtomography as a single hard tip was pressed into it. Subsequent digital image correlation was applied to estimate the strain field in the region around the indenting tip. Regions in the wood with high tensile or shear strains were identified, i.e. where cracking and fiber separation is believed to initiate. ADDRESSES OF THE AUTHORS: Magnus

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