Improving the Quality of Crop Residues by the Reduction of Ash Content and Inorganic Constituents

Peng, Yige; Lau, Anthony

doi:10.1166/jbmb.2020.1950

Cited by 5 publications

(3 citation statements)

References 57 publications

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“…21,22 In this study, the ash content was calculated with the inclusion of dust (the ash content of the raw material excluding dust was 9.62%). Peng et al 23 found that the reduction of ash content could improve the quality of crop residues. However, dust could be unavoidable in the actual biomass utilization process.…”

Section: Mmentioning

confidence: 99%

Oxidative Torrefaction of Phragmites australis: Gas-Pressurized Effects and Correlation Analysis Based on Color Value

et al. 2020

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In this study, atmospheric (AP) and gas-pressurized (GP) torrefaction of Phragmites australis (PAS) were carried out in a rotary tube furnace and a gas-pressurized autoclave, respectively, aiming to investigate the effects of torrefaction pressure on the physicochemical properties and combustion characteristics of torrefied PAS. The organic components of liquid products were also analyzed. Compared with AP torrefied PAS, GP torrefied PAS had a higher weight loss, higher heating value (HHV), lignin content, lower ash content, and atomic O/C and H/C ratios. In addition, GP torrefied PAS had better hydrophobicity, representing a stronger storage capability in humid environments. The organic components of liquid products derived from AP torrefaction were mainly aldehydes, ketones, phenols, and furans, while those from GP torrefaction were mainly phenols, acids, ketones, and alcohols. GP torrefied PAS contained a higher combustion stability and better fuel properties than AP torrefied PAS. The color of GP torrefied PAS was significantly darker than that of AP torrefied PAS, and the weight loss, volatile matter (VM) content, and HHV of AP and GP torrefied PAS showed good correlations with the color parameters. This study innovatively carried out torrefaction in a pressurized atmosphere and used color parameters to establish a model to predict the quality of torrefied products; the results could be applied directly to guide the further development of wetland biomass upgrading and products quality controlling.

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Section: Mmentioning

confidence: 99%

Oxidative Torrefaction of Phragmites australis: Gas-Pressurized Effects and Correlation Analysis Based on Color Value

et al. 2020

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“…To the knowledge of the authors, no other means of fractionation, like automated visual inspection or spectral analysis, for fractionation of material for ash and moisture content are employed at present. The ash in biomass comes from two sources: (a) biogenic ash, that is, the minerals that are a natural part of the plant cellular structure; and (b) minerals that come from external sources like soil particles that are picked up during harvest and handling [22]. According to Werkelin et al [23], the variations in ash-forming matter between the different constituents of a tree (stem, bark, branches, shoots, and foliage) were large.…”

Section: Discussionmentioning

confidence: 99%

Variability in Physical Properties of Logging and Sawmill Residues for Making Wood Pellets

Lee,

Rezaei,

Gholami Banadkoki

et al. 2024

Processes

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Wood pellets are a versatile ingredient to produce bioenergy and bioproducts. Wood pellet manufacturing in Canada started as a way of using the excess sawdust from sawmilling operations. With the recent dwindling availability of sawdust and the growth in demand for wood pellets, the industry uses more non-sawdust woody biomass as feedstock. In this study, woody biomass materials received from nine wood pellet plants in British Columbia (BC) and Alberta were analyzed for their properties, especially those used for fractionating feedstock to make pellets. Half of the feedstock received at the plants was non-sawdust. Moisture contents varied from 10 to 60% wet basis, with the hog having an average of 50%. Ash contents ranged from 0.3 to 4% dry basis and were highest in the hog fraction. Bulk density varied from 50 to 450 kg/m3, with shavings having the lowest bulk density. Particle density ranged from 359 kg/m3 for infeed mix to 513 kg/m3 for sawdust. In total, 25% of particles received were larger than 25 mm. The extraneous materials (sand, dirt) in the infeed materials ranged from 0.03% to 1.2%, except for one hog sample (8.2%). Plant operators use mechanical fractionation and blending to meet the required ash content. In conclusion, further instrumental techniques to aid in fractionation should be developed.

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“…The dry organic matter in straw is primarily organic, with cellulose accounting for about 45 percent, and lignin for 15-18%. Additionally, it is estimated that straw contains between 3-5% SiO 2 as dry matter [53].…”

Section: Straw Properties Yield and Usesmentioning

confidence: 99%

Sustainable Potato Growth under Straw Mulching Practices

Waheed

Muhammad

et al. 2023

Sustainability

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Extreme heat, droughts, pests, diseases, and short bursts of heavy rain make potato production unsustainable. This unfavorable environment negatively affects potato productivity and yield levels. Within the next few years, conditions will likely deteriorate even more. In potato cultivation, straw mulching has been shown to increase yields by promoting the growth of beneficial bacteria in the soil. Mulching improves soil humidity, decreases transpiration, and cools the soil in dry and hot regions. There is a global decline in potato yields per hectare due to poor nutrient management, moderately humid years, and high disease pressure caused by Phytophthora infestans and Alternaria species. Farmers must take cultivation measures to achieve economic efficiency and adequate yields. A range of practices contributes to better potato yields and productivity, such as the use of appropriate fungicides, planting high-yielding varieties, and increasing row spacing. These practices complicate cultivation and affect profits. Furthermore, inorganic nitrogen in the soil regularly causes acidification, eroding soil fertility. As a result of land preparation, straw residues from rice and maize are collected from the field and destroyed or burned, which depletes nutrients and pollutes the air. Returning these residues to the soil, however, can improve its quality. Integrating rice and maize straw mulching into potato cultivation practices can enhance agricultural sustainability, productivity, and yield. This review will focus on using rice and maize straw mulching in cultivating potatoes. Straw mulching promotes sustainable potato growth, increasing productivity and quality while minimizing reliance on chemical inputs. Such practices can mitigate the need for synthetic fertilizers to enhance sustainable agriculture, ensure long-term growth, improve soil health, increase yields, and promote sustainable agriculture.

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Improving the Quality of Crop Residues by the Reduction of Ash Content and Inorganic Constituents

Cited by 5 publications

References 57 publications

Oxidative Torrefaction of Phragmites australis: Gas-Pressurized Effects and Correlation Analysis Based on Color Value

Oxidative Torrefaction of Phragmites australis: Gas-Pressurized Effects and Correlation Analysis Based on Color Value

Variability in Physical Properties of Logging and Sawmill Residues for Making Wood Pellets

Sustainable Potato Growth under Straw Mulching Practices

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