Carbohydrates as binders in biomass densification for biochemical and thermochemical processes

Soleimani, Majid; Tabil, Xavier L.; Grewal, Ramanpreet; Tabil, Lope G.

doi:10.1016/j.fuel.2016.12.053

Cited by 65 publications

(22 citation statements)

References 14 publications

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“…Nowadays, pelletizing is known as a process for biomass properties improvement [1]. Biomass pellets has higher bulk density and energy density while lower moisture content than that of untreated biomass [2][3][4][5][6][7]. Nevertheless, biomass pellets have many drawbacks as same as untreated biomass such as high water absorption, biodegradation, and high volatile content.…”

Section: Introductionmentioning

confidence: 99%

Quality Properties and Pyrolysis Characteristics of Cassava Rhizome Pellets Produced by Alternating between Pelletizing and Torrefaction

2019

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This work investigated quality properties of pellets of raw cassava rhizome (P-RC), pellets of pelletized cassava rhizome followed by torrefaction (T-CP), and pellets of torrefied cassava rhizome followed by pelletizing (P-TC). Torrefaction was conducted at temperatures of 230, 250, and 280 °C for 30 min. Pyrolysis characteristics of T-CP and P-TC at torrefied temperatures of 230 and 250 °C were studied using thermogravimetric analysis. It was found that at the similar torrefied temperature, P-TC had a higher bulk density, energy density, and pellet durability than that of T-CP and P-RC while T-CP had a higher HHV and moisture absorption than P-TC and P-RC. The bulk density of P-TC was 1.13–1.19 and 1.33–1.52 times higher than that of P-RC and T-CP, respectively. The HHV of T-CP was 1.07 and 1.29 times higher than P-TC and P-RC, respectively. The energy density of P-TC was 1.24–1.56 and 1.20–1.41 times higher than that of P-RC and T-CP. In terms of Pellet Fuel Institute (PFI) standard, the durability index of P-RC, P-TC, and T-CP at torrefied temperatures of 230 and 250 °C was acceptable. However, dramatically low and unacceptable durability index was found in case of T-CP at torrefied temperature of 280 °C. The moisture absorption of P-TC was lower than that of P-RC and T-CP. Finally, T-CP had a lower pyrolysis temperature and had a much lower solid yield than that of P-TC. Variation of pyrolysis characteristics indicated the difference in chemical composition between T-CP and P-TC.

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Section: Introductionmentioning

confidence: 99%

Quality Properties and Pyrolysis Characteristics of Cassava Rhizome Pellets Produced by Alternating between Pelletizing and Torrefaction

2019

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“…32,33 Corn starch [(C 6 H 10 O 5 ) n ], glycerol (C 3 H 8 O 3 ) and acetic acid (C 2 H 4 O 2 ) are not present in the ash contents, since their components are all oxygenated hydrocarbons that generate CO 2 and H 2 O during the process of complete combustion. 34,35 Thus, the amount of ash increases as the rice husk content increased in the samples. All samples displayed lower ash content than that of 42.16% found by Morais et al in rice husk coal briquettes and those found in previous studies using rice husk biomass.…”

Section: Resultsmentioning

confidence: 98%

“…Glycerol and citric acid were added to facilitate the bonding of cellulose with hemicellulose, and acetic acid was added to catalyse these reactions, which favour agglutination of the components. 24,35 Figure 2: Trendline of moisture content, ash content and HHV for solid biofuels…”

Section: Resultsmentioning

confidence: 99%

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Mandarin Peels and Rice Husks as Substrates for Solid Biofuel

Ezirio¹,

Costa²,

Barcelos³

et al. 2020

Cellulose Chem. Technol.

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Biomass, such as mandarin peels and rice husks, are among the most abundant and accessible sources for the conversion of crops into solid biofuel. It is important to highlight that sustainable bioenergy must have high efficiency; therefore, the heating values of biofuel samples produced from rice husks, mandarin peels, corn starch, glycerol, citric acid and acetic acid have been evaluated in the present study. The total moisture content, ash content and heating values of the sixteen biofuels produced were determined. The compressive strength was also determined and it was found that all the samples presented maximum resistance, appropriate for the storage and handling of the developed solid biofuel. Replacing rice husks with mandarin peels resulted in a reduction of the silica mass in the ash content. In addition, in four specimens, the amounts of nutrients (N, P, K, Ca and Mg) and heavy metals (Cu, Zn, Fe, Mn, Cd, Pb, Cr and Al) found in the ash were measured. It was found that the amount of nutrients increased proportionally with the quantity of mandarin peels in the solid biofuel. The solid biofuel with a higher quantity of mandarin peels showed greater high and low heating values, which were 19.18 MJ.kg -1 and 17.92 MJ.kg -1 , respectively. All the developed biofuels were shown to be capable of replacing traditional heat sources, such as firewood (7.12-10.47 MJ.kg -1 ).

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“…Moreover, adding fat or oil-based binders might reduce the energy consumption of agglomeration, but the reduced friction may cause the pellets more elastic and less durable. Soleimani et al (2017) state that pellets from spruce wood shavings or wheat straw with binders like glucose, fructose, sucrose or maltodextrin have higher density over 1200 kg/m 3 or even 1300 kg/m 3 , where compared to the unit density of the pellets from the native biomass it was up to 1200 kg/m 3 . Bai et al (2017) obtained good quality pellets from biochar and 15% additive of peanut shell binder.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Physical Properties of Dietary Fiber From Apple Waste

Obidziński¹,

Dołżyńska²,

Lewicka³

2017

Farm Machinery and Processes Management in Sustainable Agriculture, IX International Scientific Symposium

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The purpose of the present study was to determine the suitability of apple fibers (dietary fiber) as a raw material for granulate pellets production, as an aspect of waste management in sustainable agriculture processes. Apple fibers are a waste produced during the agri-food processing of apples. It is obtained from apple peas and can be further used as a diet supplement or for animal feed purposes, reducing the breeding costs. The material was moisturized with water and a mixture of water and milk powder to a moisture content of 16%. During the tests, the maximum pressure of the process was determined for all trials carried out. Density, absorption and activity of water in the resulting agglomerate and in the raw material were examined. Increasing the temperature of the pressure process from 20 to 50°C results in an approx. 50% increase in the density of the test mixtures. Higher density of the resulting granules was obtained using lower agglomeration pressure. The increase in density of the granulate influences the reduction of its water absorption (decrease of its moisture content and water activity). Increasing the density of apple fiber (from loose fiber) decreases moisture and water activity.

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Carbohydrates as binders in biomass densification for biochemical and thermochemical processes

Cited by 65 publications

References 14 publications

Quality Properties and Pyrolysis Characteristics of Cassava Rhizome Pellets Produced by Alternating between Pelletizing and Torrefaction

Quality Properties and Pyrolysis Characteristics of Cassava Rhizome Pellets Produced by Alternating between Pelletizing and Torrefaction

Mandarin Peels and Rice Husks as Substrates for Solid Biofuel

Analysis of Physical Properties of Dietary Fiber From Apple Waste

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