Influence of storage time on the quality of biomass for energy production in humid subtropical regions

Brand, Martha Andréia; Muñiz, Graciela Inés Bolzón de; Quirino, Waldir Ferreira; Brito, José Ótávio

doi:10.1590/s0104-77602010000400012

Cited by 9 publications

(6 citation statements)

References 4 publications

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“…The long-term storage of virgin feedstocks (without pretreatment) had been conducted and discussed in the previous publications. Brand et al reported that the optimal storage time of different virgin feedstocks only ranged from 2–4 months, before it was decayed apparently . Nurmi argues that, even with drying occurring in the summer, moisture is nonetheless reabsorbed if storage is extended over the autumn or winter months, and the high moisture content directly results in fungal growth and mass loss.…”

Section: Resultsmentioning

confidence: 99%

Year-Round Storage Operation of Three Major Agricultural Crop Residue Biomasses by Performing Dry Acid Pretreatment at Regional Collection Depots

Han

Zhang

et al. 2021

ACS Sustainable Chem. Eng.

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Commercial cellulosic biofuel operation requires a reliable, low-cost, and stable feedstock logistic system. One great challenge is its long-term storage at least for one harvest cycle (1 year for agricultural crop residues) with a minimum loss of bulky, geographically dispersed, inflammable, and easily degradable lignocellulosic biomass. This study conducted an investigation of year-round storage of the agricultural crop residue feedstock under the scenario of performing dry acid pretreatment at the distributed regional collection depots, instead of the central biorefinery plant. The dry acid pretreatment method provides a practical basis for the storage operation by its ability for high preservation of polysaccharide solids, highly compacted accumulation density, being free from wastewater generation, low capital investment, and low energy consumption. Three major agricultural crop residues (corn stover, wheat straw, and rice straw) were pretreated by dry acid pretreatment and then stored in their major planting regions under varying natural conditions of temperature, rain and snow fall, humidity, wind, and sunlight. The pretreated corn stover, wheat straw, and rice straw contained approximately 50% (w/w) of moisture, and their high water absorption capacity maintained the crop residues in solid and fine-particle forms without free wastewater generation and flammability. Meanwhile, the pretreated crop residues were of low pH value and contained various inhibitory compounds for microbial growth. The results show that the crop residue feedstocks were well preserved with negligible solid and fermentable sugar loss after year-round storage in different regions. The physical properties, chemical compositions, enzymatic hydrolysis yields, and ethanol fermentability were maintained essentially constant with a few positive exceptions such as the increased hydrolysis yield and reduced inhibitor content. A case study shows that the feedstock transportation cost of the long-term stored feedstocks under the scenario of dry acid pretreatment at collection depots was significantly reduced compared to that of the direct transportation of virgin crop residual feedstocks. This study provided an efficient and practical logistic system for large-scale biorefinery plants.

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Section: Resultsmentioning

confidence: 99%

Year-Round Storage Operation of Three Major Agricultural Crop Residue Biomasses by Performing Dry Acid Pretreatment at Regional Collection Depots

Han

Zhang

et al. 2021

ACS Sustainable Chem. Eng.

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“…The fixed carbon content can be a parameter to select the biomass destined for combustion 45 . The fuel burning with high levels of fixed carbon and low volatile materials tends to be slower, releasing energy for a longer time for total burning 46 , becoming one of the main advantages in energy supply for the blast furnace in the steel industry 47 .…”

Section: Resultsmentioning

confidence: 99%

Energetic characterization and radiographic analysis of torrefied coated MDF residues

Castro

Zanuncio

et al. 2021

Sci Rep

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The use of wood panel residues as biomass for energy production is feasible. Heat treatments can improve energy properties while minimizing the emission of toxic gases due to thermoset polymers used in Medium Density Fiberboard (MDF) panels. Torrefaction or pre-carbonization, a heat treatment between 200 and 300 °C with low oxygen availability accumulates carbon and lignin, decreases hygroscopicity, and increases energy efficiency. The objective of this work was to evaluate the energy parameters (immediate, structural, and elementary chemical composition, moisture content, and yield) and density in torrefied MDF panels. The torrefaction improved the energetic features of coated MDF, decreasing the moisture content, volatile matter, and consequently, concentrating the carbon with better results in the samples torrefied for 40 min. The densitometric profiles of the torrefied MDF, obtained by X-ray densitometry, showed a decrease in the apparent density as torrefaction time increased. The digital X-ray images in gray and rainbow scale enabled the most detailed study of the density variation of MDF residues.

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“…Regarding the total moisture content, the bark retained low levels of water between its anatomical elements, which is due to its low amount of intercellular roles (Evert, 2006). Moreover, these two forestry wastes might underwent a diverse influence related to their drying occurred throughout both their generation and their sampling (Brand et al, 2010;Silvério et al, 2011).…”

Section: Discussionmentioning

confidence: 99%

Chemical and Fuel Properties of Forestry Wastes From Pine Plantations

et al. 2018

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Power plants have been using forestry biomasses to produce thermal and electrical energies. However, these industries lack of reliable parameters about their raw material in order to consolidate their position in this market. The present study aimed to characterize forestry wastes from pine (Pinus elliottii) plantations leftover of wood logs processing units. Wood, bark and a mixture of both of them were characterized by prompt (total moisture, hygroscopic moisture, ashes, volatile matter and fixed carbon contents), elementary (S, C, H, N and [O + Halogens] contents), and via wet (holocellulose, lignin and extractives contents) chemical analyses. Indeed, basic density and fuel properties (gross and net calorific values) were also determined. Compared to the wood, the bark presented higher extractives content, which affected the ashes content. Regarding the energetic properties, the bark showed the highest properties, but a detrimental character from an environmental standpoint. The wood-bark mixture presented intermediate properties between these two forestry wastes, but with more approximation to the wood.

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Influence of storage time on the quality of biomass for energy production in humid subtropical regions

Cited by 9 publications

References 4 publications

Year-Round Storage Operation of Three Major Agricultural Crop Residue Biomasses by Performing Dry Acid Pretreatment at Regional Collection Depots

Year-Round Storage Operation of Three Major Agricultural Crop Residue Biomasses by Performing Dry Acid Pretreatment at Regional Collection Depots

Energetic characterization and radiographic analysis of torrefied coated MDF residues

Chemical and Fuel Properties of Forestry Wastes From Pine Plantations

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