Co-pelletizing characteristics of torrefied wheat straw with peanut shell

Bai, Xiaopeng; Wang, Guanghui; Gong, Chunxiao; Yu, Young‐Moon; Liu, Weinan; Wang, Decheng

doi:10.1016/j.biortech.2017.02.091

Cited by 61 publications

(29 citation statements)

References 32 publications

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“…To the best of our knowledge, there is no ISO standard for energy consumption for pelletization. However, many researchers have focused on this index [24,25,33,47,50,[59][60][61]. According to Equation (1), the curve of the force (F 1 , F 2 ) and displacement (x 1 , x 2 ) can be obtained by a single pelletizer.…”

Section: Effects Of Different Factors On Energy Consumption Of Pelletmentioning

confidence: 99%

“…Aleksander et al [23] proposed pellet fuels made from walnut shells by controlling different parameters (such as moisture content and temperature), and optimized their durability and density. Bai et al [24] found that peanut shell contained some oils, which as a new material added to straw pellets could significantly improve the physical properties of fuel and energy consumption characteristics. Lai et al and Lam et al used palm kernel shells to produce biopellets and determined the impact of compaction pressure on the strength of fuel pellets in oil palm shells [25,26].…”

Section: Introductionmentioning

confidence: 99%

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Pelletization of Sunflower Seed Husks: Evaluating and Optimizing Energy Consumption and Physical Properties by Response Surface Methodology (RSM)

et al. 2019

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Pelletization is a significant approach for the efficient utilization of biomass energy. Sunflower seed husk is a common solid waste in the process of oil production. The novelty of this study was to determine the parameters during production of a novel pellet made from sunflower seed husk. The energy consumption (W) and physical properties (bulk density (BD) and mechanical durability (DU)) of the novel pellet were evaluated and optimized at the laboratory by using a pelletizer and response surface methodology (RSM) under a controlled moisture content (4%–14%), compression pressure (100–200 MPa), and die temperature (70–170 °C). The results show that the variables of temperature, pressure, and moisture content of raw material are positively correlated with BD and DU. Increasing the temperature and moisture content of raw materials can effectively reduce W, while increasing the pressure has an adverse effect on W. The optimum conditions of temperature (150 °C), pressure (180 MPa), and moisture content (12%) led to a BD of 1117.44 kg/m3, DU of 98.8%, and W of 25.3 kJ/kg in the lab. Overall, although the nitrogen content was slightly high, the novel manufactured pellets had excellent performance based on ISO 17225 (International Organization for Standardization of 17225, Geneva, Switzerland, 2016). Thus, sunflower seed husk could be considered as a potential feedstock for biomass pelletization.

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Section: Effects Of Different Factors On Energy Consumption Of Pelletmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Pelletization of Sunflower Seed Husks: Evaluating and Optimizing Energy Consumption and Physical Properties by Response Surface Methodology (RSM)

et al. 2019

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“…Through a detailed analysis of two different process schemes on producing biocoal, Ghiasi et al concluded that a binder is necessary for pelletization of torrefied wood with reasonable energy consumption [3]. The effect of additives/binders such as lignin, starch, saw dust, caster bean cake, peanut shell, calcium hydroxide, and sodium hydroxide on pelletization of torrefied biomass has been investigated [17][18][19][20]. However, in these studies, the binders/additives were used at much higher levels (up to 30%) than allowable by current International Organization for Standardization (ISO) guidelines (≤4%) for premium quality pellets made from thermally treated wood [21].…”

Section: Introductionmentioning

confidence: 99%

Pelletization of Torrefied Wood Using a Proteinaceous Binder Developed from Hydrolyzed Specified Risk Materials

et al. 2019

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Pressing issues such as a growing energy demand and the need for energy diversification, emission reduction, and environmental protection serve as motivation for the utilization of biomass for production of sustainable fuels. However, use of biomass is currently limited due to its high moisture content, relatively low bulk and energy densities, and variability in shape and size, relative to fossil-based fuels such as coal. In recent years, a combination of thermochemical treatment (torrefaction) of biomass and subsequent pelletization has resulted in a renewable fuel that can potentially substitute for coal. However, production of torrefied wood pellets that satisfy fuel quality standards and other logistical requirements typically requires the use of an external binder. Here, we describe the development of a renewable binder from proteinaceous material recovered from specified risk materials (SRM), a negative-value byproduct from the rendering industry. Our binder was developed by co-reacting peptides recovered from hydrolyzed SRM with a polyamidoamine epichlorohydrin (PAE) resin, and then assessed through pelleting trials with a bench-scale continuous operating pelletizer. Torrefied wood pellets generated using peptides-PAE binder at 3% binder level satisfied ISO requirements for durability, higher heating value, and bulk density for TW2a type thermally-treated wood pellets. This proof-of-concept work demonstrates the potential of using an SRM-derived binder to improve the durability of torrefied wood pellets.

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“…Component blending and pelletization are envisaged to afford adsorbent materials with improved phase separation over powdered materials that favour scalability for solid phase extraction (SPE) processes in aqueous media. Previous studies have reported the utility of blending binary systems in their powdered form with further chemical modification, [18] and co-pelletization of torrefied wheat straw with peanut shells [19]. To the best of our knowledge, this study reports a first-example that demonstrates the utility of co-pelletization between chitosan and wheat straw at variable straw content, along with characterization of the adsorption properties of these composites with anionic dyes.…”

Section: Introductionmentioning

confidence: 88%

Animal Biopolymer-Plant Biomass Composites: Synergism and Improved Sorption Efficiency

2020

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Pelletized biomaterial composites that contain chitosan (C) and torrefied wheat straw (S) at variable weight composition (C:S) were prepared using a facile blending process. The fractional content of the wheat straw was studied to elucidate the role of biomass on the pelletized product and effects of S-content on the physicochemical properties relevant to adsorption phenomena. Chitosan pellets (with and without S) were characterized by spectroscopic (FT-IR and 13C NMR) and thermal (TGA and DSC) techniques to provide support for their respective C:S composition. Confocal microscopy using fluorescein (FL) as a dye probe revealed the presence and an increase in the accessibility of the active sites for the composite pellets according to the S-content (wt %). Equilibrium and kinetic sorption studies using FL and reactive black (RB) dyes revealed an incremental adsorption affinity of the pellets with anionic dyes in variable charge states (FL and RB). The trend for dye adsorption parallels the incremental S-content (wt %) in the composite pellets. This study reports a first-example of a low-cost, facile, and sustainable approach for the valorization of straw and chitosan suitable for sorption-based applications in aqueous media.

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Co-pelletizing characteristics of torrefied wheat straw with peanut shell

Cited by 61 publications

References 32 publications

Pelletization of Sunflower Seed Husks: Evaluating and Optimizing Energy Consumption and Physical Properties by Response Surface Methodology (RSM)

Pelletization of Sunflower Seed Husks: Evaluating and Optimizing Energy Consumption and Physical Properties by Response Surface Methodology (RSM)

Pelletization of Torrefied Wood Using a Proteinaceous Binder Developed from Hydrolyzed Specified Risk Materials

Animal Biopolymer-Plant Biomass Composites: Synergism and Improved Sorption Efficiency

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