Mechanistic study of microstructural deformation and stress in steam-exploded softwood

Muzamal, Muhammad; Gamstedt, E. Kristofer; Rasmuson, Anders

doi:10.1007/s00226-017-0896-7

Cited by 13 publications

(8 citation statements)

References 26 publications

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“…The results agree with Muzamal et al, 2015, andSatari et al, 2018 [24-26]. The size distribution of lignocellulosic biomass particles is a crucial factor in both steam explosion (SE) and the subsequent anaerobic digestion processes [22,25]. The efficiency of these processes is influenced by the size, dimensions, and structure of the biomass particles [27].…”

Section: Introductionsupporting

confidence: 89%

Lignocellulosic Biomass Valorisation by Coupling Steam Explosion Treatment and Anaerobic Digestion

Chaib,

Abatzoglou,

Achouri

2024

Energies

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Lignocellulosic biomass valorisation presents a promising avenue for sustainable and renewable energy production. In this study, the synergistic potential of coupling steam explosion (SE) treatment with anaerobic digestion (AD) was explored to maximize the efficient conversion of lignocellulosic biomass into valuable biogas. The SE process, a cost-effective technique for biomass fractionation, plays a pivotal role in breaking down complex biomass components, rendering them more amenable to subsequent biological treatments. In the present work, we investigated the impact of various SE conditions, including temperature, time, and acid concentration, on the breakdown of lignocellulosic residues. Through the quantification and analysis of sugars and their degradation products, the optimization of steam explosion conditions at lower temperatures and shorter time periods, along with the presence of a lower concentration of acid catalysts, efficiently releases sugars. Maintaining these conditions helps prevent byproducts. The evaluation of the (S/I)vs ratio during anaerobic digestion reveals an optimal 1/2 ratio, maximizing biogas production. This innovative approach demonstrates significant potential for the valorisation of lignocellulosic biomass, contributing to a more sustainable and efficient utilization of renewable resources in the pursuit of clean energy solutions.

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Section: Introductionsupporting

confidence: 89%

Lignocellulosic Biomass Valorisation by Coupling Steam Explosion Treatment and Anaerobic Digestion

Chaib,

Abatzoglou,

Achouri

2024

Energies

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“…7c). According to Muzamal, the presence of cross-field pits in the cell walls resulted in stress concentration under steam pressure, and the resultant stress concentration promoted the formation of cracks in these regions [28]. These micro-cracks would provide new capillaries for moisture diffusion and make moisture easier to move through cell wall to adjacent cell lumen.…”

Section: Sem Images Of Mw-pretreated Woodmentioning

confidence: 99%

Effects of microwave pretreatment on drying of 50 mm-thickness Chinese fir lumber

Xiang

Zhou

et al. 2021

J Wood Sci

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Low permeability of wood causes problems during drying of timber. This study evaluated the effects of microwave (MW) pretreatment on the conventional drying behavior and mechanical damages of Chinese fir lumber. MW pretreatment of lumber was performed at applied MW energy of 43 kWh/m3, and then, the samples were dried in a laboratory drying kiln. The results showed that the drying rate was effectively increased after MW pretreatment. The moisture content (MC) deviation in thickness and residual stress indexes of MW-pretreated samples were significantly decreased in comparison with the control samples, and the appearance quality of wood samples was not clearly affected by the MW pretreatment. Scanning electron microscope (SEM) micrographs demonstrated that pit membranes were damaged after MW pretreatment, and the micro-cracks in radial section as well as detachments between ray parenchyma cells and tracheids were also observed. Consequently, new pathways for moisture migration during drying process were formed after MW pretreatment, which contributed to the improved permeability of Chinese fir lumber and decreased drying time.

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“…Pressure pretreatment helped open up the connective wood passages by breaking down the pit membrane and intercellular spaces in the wood, which blocked the air passages. Pressure from steam explosions leads to micro-cracks on the inner cell walls, pits, and vessels of Norway spruce boards (Muzamal et al 2017). Exerting high pressure to the sample boards of Chinese poplar (Populus cathayana Rehd) before drying, followed by the instantaneous release of the pressure, caused the pit membranes to fracture, thus increasing the wood permeability (Ma et al 2015).…”

Section: Wet Pockets In the Dried Woodmentioning

confidence: 99%

Effects of incision, forced-air drying, and pressure pretreatments on wet pockets, drying rate, and drying defects of Acacia mangium wood

Ambrose

Jusoh

Duju

et al. 2022

BioRes

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The pretreatment of 7- and 10-year-old Acacia mangium wood using incision, forced-air dying, and pressure were conducted to evaluate the effects on wet pockets, the drying rate, and drying defects. Quarter and rift sawn boards were used in this study. Results showed that the incidence of wet pockets in the incised, forced-air drying, and pressure-treated quarter and rift sawn boards of 7-year-old A. mangium alleviated up to 35% and 79%, 60% and 54%, and 54% and 82%, respectively. In 10-year-old A. mangium, the occurrence of wet pockets was reduced by 68% and 60%, 31% and 73% and 82% and 73% in quarter and rift sawn boards, respectively. Drying rates of 7-year-old A. mangium pressure-treated boards increased by 5% and 40% in quarter and rift sawn boards, respectively. The drying rate was 10% faster for 10-year-old A. mangium pressure-treated boards. The application of the pressure pretreatment yielded no severe drying defects at the end of the drying period, except for a mild collapse in one of the 10-years old A. mangium sample boards. Incision and forced-air drying pretreatments improved the drying rate; however, pressure treatment was found to be superior in reducing wet pockets and drying defects.

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Mechanistic study of microstructural deformation and stress in steam-exploded softwood

Cited by 13 publications

References 26 publications

Lignocellulosic Biomass Valorisation by Coupling Steam Explosion Treatment and Anaerobic Digestion

Lignocellulosic Biomass Valorisation by Coupling Steam Explosion Treatment and Anaerobic Digestion

Effects of microwave pretreatment on drying of 50 mm-thickness Chinese fir lumber

Effects of incision, forced-air drying, and pressure pretreatments on wet pockets, drying rate, and drying defects of Acacia mangium wood

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