Review: Effects of wood quality and refining process on TMP pulp and paper quality

Li, Bin; Li, Haiming; Zha, Quanqing; Bandekar, Rohan; Alsaggaf, Ahmed; Ni, Yonghao

doi:10.15376/biores.6.3.li

Cited by 43 publications

(12 citation statements)

References 7 publications

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“…These three pulps were refined with the same conditions but the specific energy leading to BTC-1 was significantly lower. According to Li et al, chip properties could change the refining intensity. Therefore, the TEMPO oxidation, which is a surface treatment, has changed chips properties, inducing a decrease of refining intensity.…”

Section: Resultssupporting

confidence: 65%

4-Acetamido-TEMPO-Mediated Oxidation of Wood Chips and Thermomechanical Pulp in Large Scale

Myja

Loranger

Lanouette

2019

Ind. Eng. Chem. Res.

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The TEMPO-mediated oxidation was mainly studied in laboratory scale and need to be scale-up for any future industrial implantation. With this objective, the oxidation was applied at several step in a thermomechanical pulp production system. Softwood chips were impregnated with a TEMPO mixture or treated in batch before refining, leading to a modification of pulp mechanical and optical properties. The TEMPO oxidation was also studied on softwood pulp with a usual batch oxidation, a high consistency treatment or by replacing the diluting water by a TEMPO oxidation medium during the secondary refining.Pulp from high consistency oxidation presented a significant energy potential gain. However, optical properties were severely affected and could not be totally recovered by a conventional hydrogen peroxide bleaching. The refiner was also used as a nanofiber producing apparatus for pulp with carboxylic group content higher than 1500 mmol/kg. For this application, the refiner appeared to be a high efficiency dispersion system to produce significant amount of nanofibers at low energy consumption.

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Section: Resultssupporting

confidence: 65%

4-Acetamido-TEMPO-Mediated Oxidation of Wood Chips and Thermomechanical Pulp in Large Scale

Myja

Loranger

Lanouette

2019

Ind. Eng. Chem. Res.

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“…As a traditionally widely used mechanical treatment for the pulp and paper making industry, mechanical refining (particularly for disk refining) is a mature technology for improving the fiber performance by decreasing cell wall thickness, fiber coarseness of long fiber fraction, and fiber length, generating fines and increasing the specific surface area of fibers and fines. , Nowadays, with the rapid development of renewable biomass energy conversion, the mechanical refining after chemical pretreatment has been extensively studied to further modify the substrate to enhance the accessibility of the substrate and improve the final reducing sugar yields. − Hence, to some extent, the mechanical refining process after pretreatment could partly reduce the selling price of bioethanol and increase the final bioethanol yields …”

Section: Classification and Development Of Alkali-based Pretreatmentmentioning

confidence: 99%

Review of Alkali-Based Pretreatment To Enhance Enzymatic Saccharification for Lignocellulosic Biomass Conversion

2016

Ind. Eng. Chem. Res.

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144

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Lignocelluloses have been the focus of much attention, because of their conversion to fermentable sugars for cellulosic ethanol production, both from the viewpoint of energy and the environment. Pretreatment plays a crucial rule in biomass conversion, to overcome the chemical and structural difficulties, which have evolved in lignocelluloses, and to produce a cost-effective fermentable sugar via enzymatic saccharification. Among the developed pretreatment approaches, alkali-based pretreatment technology, which can utilize the equipment and chemical recovery system in the pulping industry, has been considered one of the most promising pretreatment methods, mainly because of its high efficiency in delignification and high final total sugar yields. This paper reviews the classification, mechanism, advantages, disadvantages, and the progress of alkali-based pretreatment technologies, in order to better understand the fundamental principles of alkali-based pretreatments. This is of vital importance for the process improvement and commercial production of alkali-based pretreatment for producing cellulosic ethanol.

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“…9−11 Disc refining is an effective but energy-intensive technology that is widely deployed in the pulp and paper industry. 12 Current disc refining technology is optimized to achieve optimal energy consumption with higher strength of the final paper product by increasing fiber flexibility 13 and bonding surface areas. 14 The fines production is minimized to avoid plugging issues in paper production machines.…”

Section: ■ Introductionmentioning

confidence: 99%

Modeling the Disc Refining of Lignocellulosic Biomass toward Reduced Biofuel Production Cost and Greenhouse Gas Emissions: Energy Consumption Prediction and Validation

Sievers

Chen

2021

ACS Sustainable Chem. Eng.

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Disc refining is a critical step in the deacetylation and mechanical refining (DMR) pretreatment process for the conversion of herbaceous biomass to biofuels. It is very effective in breaking down the biomass structures to increase enzyme accessibility and sugar yield. However, it is also an energy-intensive process, which consumes fossil electricity, generating greenhouse gas (GHG) emissions, and limits its commercialization in the biorefinery industry. To the authors’ best knowledge, this work is the first to report the development of a physics-based model in predicting the refining energy consumption during the biomass disc refining process. The developed model demonstrated its capability in accurately predicting the refining energy consumption under different operation conditions. Simulations show that the net refining energy consumption, net refining energy efficiency, and specific net energy increase with the increase in rotation speed and the decrease in the refiner plate gap. A convergence trend of these attributes was also observed between larger and smaller refiner plate gaps at increasing rotation speeds. In the scaling-up of the DMR pretreatment process, this model will be a powerful tool in the refiner plate design and operation parameter optimization to reach optimum refining energy consumption to reduce biofuel production cost and GHG emissions.

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Review: Effects of wood quality and refining process on TMP pulp and paper quality

Cited by 43 publications

References 7 publications

4-Acetamido-TEMPO-Mediated Oxidation of Wood Chips and Thermomechanical Pulp in Large Scale

4-Acetamido-TEMPO-Mediated Oxidation of Wood Chips and Thermomechanical Pulp in Large Scale

Review of Alkali-Based Pretreatment To Enhance Enzymatic Saccharification for Lignocellulosic Biomass Conversion

Modeling the Disc Refining of Lignocellulosic Biomass toward Reduced Biofuel Production Cost and Greenhouse Gas Emissions: Energy Consumption Prediction and Validation

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