Physicochemical characteristics and pyrolysis kinetics of raw and torrefied hybrid poplar wood  (NM6 – <i>Populus nigra</i>)

Regmi, Bharat; Dutta, Animesh; Pradhan, Ranjan; Arku, Precious

doi:10.1080/17597269.2017.1368058

Cited by 6 publications

(6 citation statements)

References 30 publications

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“…Although activation energy of hydrochar pyrolysis reaction increases with conversion degree (see in Figure ), average activation energy is lower than the average activation energy of wood sawdust pyrolysis. Similar results were observed by Regmi et al, where torrefied (dry torrefaction) hybrid poplar had lower average activation energy (168.20 [calculated by KAS method] and 169.51 kJ/mol [calculated by FWO method]) than average activation energy of raw hybrid poplar (202.27 kJ/mol [calculated by KAS method] and 201.69 kJ/mol [calculated by FWO method]). The difference between the activation energies can be explained by referring the wood structure, which is changed during the hydrothermal carbonization (Figure ).…”

Section: Resultssupporting

confidence: 86%

“…Activation energies regarding pyrolysis of wood sawdust and its Although activation energy of hydrochar pyrolysis reaction increases with conversion degree (see in Figure 7), average activation energy is lower than the average activation energy of wood sawdust pyrolysis. Similar results were observed by Regmi et al, 47 where torrefied (dry torrefaction) hybrid poplar had lower average activation . The difference between the activation energies can be explained by referring the wood structure, which is changed during the hydrothermal carbonization (Figure 1).…”

Section: Kineticssupporting

confidence: 90%

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Pyrolysis and combustion characteristics and kinetics of wood sawdust and wood sawdust hydrochar

Kabakcı

2019

Env Prog and Sustain Energy

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This study compares the pyrolysis and combustion characteristics with the kinetics of wood sawdust and its hydrochar. Wood sawdust hydrochar was obtained by the hydrothermal treatment of wood sawdust (biomass/water: 1 g/4 mL) at 220°C, where the residence time was set as 90 min. After hydrothermal carbonization, carbon content and heating value were both increased by 14%. Pyrolysis and combustion of wood sawdust and its hydrochar were performed by thermogravimetric analysis at 10, 20, 30, and 40°C/min. Kissinger–Akahira–Sunose (KAS) method, Friedman method, Flynn–Wall–Ozawa (FWO) method, and Kissinger method were used for analyzing the pyrolysis data. For combustion, only KAS and FWO methods were used to determine the kinetic parameters. As compared to wood sawdust pyrolysis, average activation energy of hydrochar pyrolysis was lower (150.36 kJ/mol by using KAS method, 153.05 kJ/mol by using FWO method). Based on mean activation energies, pyrolysis reaction of hydrochar was more favorable than its combustion. In combustion, average activation energy of hydrochar combustion reaction was higher; indicating that combustion of wood sawdust was more favorable.

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Section: Resultssupporting

confidence: 86%

Section: Kineticssupporting

confidence: 90%

Pyrolysis and combustion characteristics and kinetics of wood sawdust and wood sawdust hydrochar

Kabakcı

2019

Env Prog and Sustain Energy

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“…The new absorption peak at 1268 cm −1 is the stretching vibration of phenolic C-OH in peanut hull [41]. Notably, phenolic hydroxyl groups in lignin, benzene ring, and peanut hull mainly participate in coordination reactions [45].…”

Section: Fourier Infrared Spectroscopy (Ftir) Testmentioning

confidence: 99%

Study on the Process Optimization of Peanut Coat Pigment Staining of Poplar Wood

Qi,

Zhang,

Sun

et al. 2024

Forests

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Wood staining is a crucial technique for enhancing the decorative effect of wood. Different mordants and mordant processes can influence the staining effect of wood. In this study, three types of mordants and mordant methods were selected to improve the color difference and colorfastness to the washing of poplar veneer, using green peanut pigment as the dye. An orthogonal test was conducted to investigate the effects of mordant temperature, mordant time, and mordant concentration on color difference and colorfastness to washing. Range and variance analysis were employed to determine these properties’ main factors. A fuzzy comprehensive evaluation method was used to evaluate and optimize the color difference value and colorfastness of washing. The results revealed that all three factors had significant impacts on both color difference and colorfastness to washing during the process of mordant staining. The optimal process conditions (temperature, concentration, time) for achieving desirable staining effects on poplar veneer were determined as 50 °C, 0.8%, and 2 h, respectively. Furthermore, Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and X-ray diffraction (XRD) analyses demonstrated that the dye formed complexes with poplar wood, enabling it to adhere to wood grain apertures and tube walls effectively. Mordant treatment increased the crystallinity of stained wood significantly while improving its overall staining performance considerably. This study provides substantial data support for future optimization processes involving natural pigment coal staining in wood.

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Section: Thermochemical Conversionmentioning

confidence: 99%

“…[107] Regmi et al studied the impact of torrefaction in upstream processing for fast pyrolysis using reaction models and reported a 10% reduction in the activation energy of reactions compared to untreated feedstock. [108] The development of small-scale mobile pyrolysis facilities and the co-pyrolysis of different feedstocks are two emerging trends in pyrolysis process research. [100][101][102] Small-scale mobile pyrolysis facilities are gaining prominence in the biorefinery supply chain as they can Zacher et al [88] Whole tree chips, forest residues, and agricultural residues Bio-oil Hydrogenation-derived renewable diesel (HDRD)…”

Section: Pyrolysismentioning

confidence: 99%

A review of Canadian wood conversion technologies for the production of fuels and chemicals

et al. 2023

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Canada has 347 million ha of forest cover, contributing to the potential large availability of wood‐based resources. Although Canada's forest sector contributed $23.7 billion to the national nominal gross domestic product (GDP) in 2019, the GDP contribution of the wood product manufacturing subsector shrank by 6%. To reposition the Canadian forest industry, new forest management practices and wood‐based conversion technologies should be applied. In this context, the use of woody biomass in biorefineries to produce clean energy, fuels, and chemicals is becoming increasingly significant. There is a need to understand the current status and challenges of the wood‐based biomass conversion technologies that have been and are being developed in Canada. This information will help decision‐makers in formulating and implementing forest sector‐related policies for a sustainable bioeconomy in Canada. This study is focused on a review of Canadian woody biomass conversion technologies. Our critical review identified considerable potential biomass conversion technologies specialized for woody feedstock, all in the Canadian setting. We focused on the prospects of revitalizing Canada's pulp and paper industry through the integration of pre‐treatment processes and biochemical technologies. The thermochemical conversion pathway was identified as the dominant route for woody feedstock valorization. The review also identified pathways with the potential to diversify the existing product mix that generate products from wood streams, such as chemicals and biomaterials. Most of the biochemical and thermochemical research done in institutional and multi‐institutional research collaborations from laboratory scale to industrial scale will boost the chances of the commercialization of a wood‐based biorefinery in Canada.

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Physicochemical characteristics and pyrolysis kinetics of raw and torrefied hybrid poplar wood (NM6 – Populus nigra)

Cited by 6 publications

References 30 publications

Pyrolysis and combustion characteristics and kinetics of wood sawdust and wood sawdust hydrochar

Pyrolysis and combustion characteristics and kinetics of wood sawdust and wood sawdust hydrochar

Study on the Process Optimization of Peanut Coat Pigment Staining of Poplar Wood

A review of Canadian wood conversion technologies for the production of fuels and chemicals

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