Effect of Alkali Pectinase Pretreatment on Bagasse Soda-Anthraquinone Pulp

Liu, Xiuyu; Jiang, Yan; Xie, Qiuxia; Nie, Shuangxi; Song, Xueping

doi:10.15376/biores.12.3.5045-5056

Cited by 8 publications

(6 citation statements)

References 18 publications

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“…As one of the most abundant natural resources, cellulose, is characterized by unique features including renewability, biodegradability, low thermal expansion, and eco-friendly properties (Yan and Xu 2015;Liu et al 2017;Zhang et al 2018Zhang et al , 2019a. This could lead to the development of light weight and low-cost green products.…”

Section: Introductionmentioning

confidence: 99%

Flexible and conductive cellulose substrate by layered growth of silver nanowires and indium-doped tin oxide

Tao

Liu

Islam

et al. 2020

BioRes

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Regenerated cellulose film (RCF) has potential as a conductive substrate due to features such as its degradability, transparency, and flexibility. Indium doped tin oxide (ITO) is a conventional conductive material, but its rigidity restricts the formation of flexible conductive film. In this study, silver nanowires (AgNWs) were introduced between the RCF and the ITO conductive framework. Additionally, the fabrication of flexible, conductive, and transparent RCF was conducted. The AgNWs-ITO based RCF demonstrated high conductivity (170 Ω per sq) and transparency (78%) by the addition of 50 μL of AgNWs. After bending the sample 50 times with a 5 mm curve radius, the as-prepared conductive RCF presented an electric resistance improvement of 19%, with a 485% increase for the control ITO-based RCF. This is a result of the AgNWs framework, which can lessen the destruction of the bending treatment on the conductive layer and can also desirably connect the ITO conductive sections. The novel approach can expedite the versatile applications of flexibly conductive RCF on printable, portable, and wearable electronic devices.

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Section: Introductionmentioning

confidence: 99%

Flexible and conductive cellulose substrate by layered growth of silver nanowires and indium-doped tin oxide

Tao

Liu

Islam

et al. 2020

BioRes

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“…AQ addition in cooking liquor enhanced the pulp yield, viscosity and degree of polymerization (DP) values of the chickpea stalk pulps. AQ oxidizes the reducing end of the polysaccharide in the pulp, preserving it from alkaline deterioration (Liu et al, 2017;Masrol et al, 2018;Shao et al, 2017). Peeling reactions that cause yield loss are reduced and pulp yields increase (Fig.…”

Section: Chickpea Stalk Pulp Properties and Effects Of Anthraquinonementioning

confidence: 99%

NOHUT (Cicer arietinum) SAPI KAĞIT HAMURLARININ KARAKTERİZASYONU VE KAĞIT ÜRETİMİNDE DEĞERLENDİRİLMESİ

Çiçekler

ÖZDEMİR

Tutuş

2022

Bilge International Journal of Science and Technology Research

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In this study, the evaluability of chickpea stalks generated after harvest in chickpea production was investigated in pulp and paper production. Also, paper production was carried out by blending the chickpea stalk fibers with primary and secondary fibers in certain proportions and the effects of chickpea stalk fibers on the paper properties were determined. The modified kraft method was used in the pulping of chickpea stalks and anthraquinone (AQ) was added to the cooking liquor as a catalyst. Some chemical, mechanical and optical properties of the pulps produced with the addition of different AQ charges were compared and the 0.7% AQ added cooking experiment gave the best results. The yield and viscosity values of the chickpea stalk pulps increased by 12.6% and 34.2%, respectively and the kappa number decreased by 46.7% with the addition of 0.7% AQ to cooking liquor. Paper production was carried out by blending the fibers obtained from an optimum cooking condition with primary and secondary fibers at certain rates and the effects of chickpea stalk fibers on the paper properties were examined. Depending on the amount of chickpea stalk fibers, the mechanical properties of the papers produced with secondary fibers and the optical properties of the papers produced with primary fibers improved. The strength losses that occur during the recycling of waste paper could be reduced by blending the chickpea stalk fibers with secondary fibers and it is possible to produce various paper types such as writingprinting paper by blending the short fiber chickpea stalk fibers and long fibers.

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“…Bagasse was pretreated with the pectinase in a 4 L reactor under the following conditions: temperature, 55 °C; pulp consistency, 10%; initial pH, 9.0 (adjusted with acetate buffer); pectinase dosage, 60 IU/g of oven-dried bagasse; and total time, 60 min (Liu et al 2017). The control samples were subjected to the same treatment conditions without the addition of the enzyme.…”

Section: Enzymatic Pretreatmentmentioning

confidence: 99%

“…All bagasse samples were subjected to soda-AQ pulping in an oil bath rotating digester. The conditions of cooking were as follows: alkali dosage, 13%; anthraquinone dosage, 0.05%; ratio of liquor to bagasse, 5:1 (v/w); maximum temperature, 158 °C; heating time, 100 min; and holding time, 100 min (Liu et al 2017).…”

Section: Production Of Pulpsmentioning

confidence: 99%

“…Soda-AQ pulping produces a pulp with better properties, but at the same time it brings about some disadvantages, such as high chemical charge in pulping and bleaching and environmental pollution (Ates et al 2008). Biopulping, which was used in fiber pretreatment prior to chemical pulping, would be a potential solution for some of the soda-AQ pulping problems, by, for instance, decreasing chemical consumption during pulping and bleaching (Liu et al 2017), improving pulp strength properties, and reducing environmental pollution (Kaur et al 2010;Martin-Sampedro et al 2011). Biopulping can result in better fiber qualities due to the superior flexibility, compressibility, collapsibility, and conformability of fibers produced using this method (Chen et al 2010).…”

Section: Introductionmentioning

confidence: 99%

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Effects of pectinase treatment on pulping properties and the morphology and structure of bagasse fiber

Liu

Jiang

Yang

et al. 2017

BioRes

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Bagasse was pretreated by pectinase, and both the control and pretreated bagasse were subjected to soda-anthraquinone (AQ) pulping. There were significant improvements in pulp properties after pectinase treatment, such as relative increases of brightness (5.5%), breaking length (17.1%), burst factor (16.5%), and tear factor (7.0%). The samples were analyzed by a fiber analyzer, scanning electron microscope (SEM), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR). The pectinase treatment changed the material properties, which would improve the efficiency of subsequent pulping, such as increasing the fiber length (20.0%), lowering the fines length (10.6%), and increasing the percentage of flexible fiber. Pectinase treatment removed some non-cellulose components; in particular, the pectin and alcohol-benzene extractives were decreased by 19.4% and 37.3% after enzymatic treatment. The hemicellulose and lignin were decreased by 5.5% and 1.9%, respectively. A bulkier and more collapsed fiber surface was observed in the treated fibers, which suggested greater pore volume and more accessible surface area. Treatment caused a slight incline by 4.8% in the crystallinity index. Some chemical structures in pectin, hemicellulose, and lignin were partly broken, showing the effect of pectinase treatment on the degradation of non-cellulose components. Pectinase treatment prior to pulping is therefore recommended, given its efficiency and eco-friendly nature.

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Effect of Alkali Pectinase Pretreatment on Bagasse Soda-Anthraquinone Pulp

Cited by 8 publications

References 18 publications

Flexible and conductive cellulose substrate by layered growth of silver nanowires and indium-doped tin oxide

Flexible and conductive cellulose substrate by layered growth of silver nanowires and indium-doped tin oxide

NOHUT (Cicer arietinum) SAPI KAĞIT HAMURLARININ KARAKTERİZASYONU VE KAĞIT ÜRETİMİNDE DEĞERLENDİRİLMESİ

Effects of pectinase treatment on pulping properties and the morphology and structure of bagasse fiber

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