Hydrothermal carbonization of the waste straw: A study of the biomass transient heating behavior and solid products combustion kinetics

Sobek, Szymon; Tran, Quoc Khanh; Junga, Robert; Werle, Sebastian

doi:10.1016/j.fuel.2021.122725

Cited by 31 publications

(17 citation statements)

References 30 publications

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“…Which includes the design of a biomass dryer run on hot air as well as a torrefaction reactor run on dry steam (superheated steam). As the novelty of this work in the winter of 2021, a new installation will be built including a counter-flow torrefaction reactor with superheated steam torrefaction, and experimental research will be carried out on the conditions of the torrefaction process of woody and agricultural biomass mix with digested solid residues DGS to produce carbonized solid biofuels such as biocarbon as a carrier for organic fertilizers, with data from this study [67][68][69].…”

Section: Discussionmentioning

confidence: 99%

Pine Wood and Sewage Sludge Torrefaction Process for Production Renewable Solid Biofuels and Biochar as Carbon Carrier for Fertilizers

et al. 2021

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This work presents the results of research on the thermo-chemical conversion of woody biomass–pine wood coming from lodzkie voivodship forests and sewage sludge from the Group Sewage Treatment Plant of the Łódź Urban Agglomeration. Laboratory scale analyses of the carbonization process were carried out, initially using the TGA technique (to assess activation energy (EA)), followed by a flow reactor operating at temperature levels of 280–525 °C. Both the parameters of carbonized solid biofuel and biochar as a carrier for fertilizer (proximate and ultimate analysis) and the quality of the torgas (VOC) were analyzed. Analysis of the pine wood and sewage sludge torrefaction process shows clearly that the optimum process temperature would be around 325–350 °C from a mass loss ratio and economical perspective. This paper shows clearly that woody biomass, such as pine wood and sewage sludge, is a very interesting material both for biofuel production and in further processing for biochar production, used not only as an energy carrier but also as a new type of carbon source in fertilizer mixtures.

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Section: Discussionmentioning

confidence: 99%

Pine Wood and Sewage Sludge Torrefaction Process for Production Renewable Solid Biofuels and Biochar as Carbon Carrier for Fertilizers

et al. 2021

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“…Over the years numerous studies investigated HTC biomass processing, providing insight into product quality, yields, and the influence of various experimental conditions [162]. Hydrochar is commonly employed as an alternative to fossil coal for combustion purposes [163], produced by HTC of wet biomass and wet residues, e.g., sewage sludge, waste straw, and spent coffee grain [164]. Additionally, the unique ability of HTC to remove the mineral ash has resulted in increased interest in the chicken breeding industry, to upgrade the properties of raw chicken manure and poultry litter in order to create a sustainable solid fuel for combustion and gasification [165].…”

Section: Hydrothermal Carbonization (Htc) As a Biomass Upgrade Methodsmentioning

confidence: 99%

“…Waste straw is the first type of lignocellulosic biomass, and it is a widely utilized feedstock for HTC processing. Low bulk energy density and high content of alkali metals in ash set are required for its removal before large-scale utilization in industrial boilers [163]. HTC processing of waste straw generates highly-carbonized solid fuels with HHV as high as 25.00 ± 1.34 MJ/kg at temperatures of 275 • C, however, at reduced EY of approximately 62.69 ± 3.65%.…”

Section: Hydrothermal Carbonization (Htc) As a Biomass Upgrade Methodsmentioning

confidence: 99%

Actual Trends in the Usability of Biochar as a High-Value Product of Biomass Obtained through Pyrolysis

Sajdak

Muzyka

Gałko³

et al. 2022

Energies

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This review comprehensively examines biochar, an essential material in an era of climate change for reducing carbon dioxide (CO2) emissions into the atmosphere. It is inconspicuous, black, lightweight, and very porous, and is produced through the thermal conversion of biomass. Our literature review highlights biochar’s expansive application possibilities. Firstly, its potential to improve soil quality and sequester CO2 has been examined, as well as its utilization in iron and steel manufacturing to minimize the quantity of coke and ultimately reduce CO2 emissions. In industrial manufacturing, the complete elimination of coke can promote environmental neutrality, which is achieved using biochar from biomass for its extrusion. Furthermore, biochar is becoming increasingly significant in modern energy storage technologies and as an important additive in Pickering emulsions, which are also employed in energy storage systems. Additionally, the use of carbon black is a broad topic, and this review illustrates where it can be successfully utilized, especially in environmentally sensitive areas.

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“…Few works have analyzed the effect of HTC pressure on the properties of food waste-derived hydrochar. This may be due to the fact that the pressure of an HTC reactor in most studies [ 73 , 74 ] were measured or monitored after few minutes into the duration of dwelling time. According to Das et al [ 75 ], HTC process normally records a final pressure of about 2 MPa at 200 °C within 1 h of dwelling time.…”

Section: Hydrothermal Carbonization Of Food Waste For Char Productionmentioning

confidence: 99%

Hydrothermal Conversion of Food Waste to Carbonaceous Solid Fuel—A Review of Recent Developments

Khan

Hameed

Siddiqui

et al. 2022

Foods

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This review critically discussed recent developments in hydrothermal carbonization (HTC) of food waste and its valorization to solid fuel. Food waste properties and fundamentals of the HTC reactor were also covered. The review further discussed the effect of temperature, contact time, pressure, water–biomass ratio, and heating rate on the HTC of food waste on the physiochemical properties of hydrochar. Literature review of the properties of the hydrochar produced from food waste in different studies shows that it possesses elemental, proximate, and energy properties that are comparable to sub-bituminous coal and may be used directly as fuel or co-combusted with coal. This work conclusively identified the existing research gaps and provided recommendation for future investigations.

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Hydrothermal carbonization of the waste straw: A study of the biomass transient heating behavior and solid products combustion kinetics

Cited by 31 publications

References 30 publications

Pine Wood and Sewage Sludge Torrefaction Process for Production Renewable Solid Biofuels and Biochar as Carbon Carrier for Fertilizers

Pine Wood and Sewage Sludge Torrefaction Process for Production Renewable Solid Biofuels and Biochar as Carbon Carrier for Fertilizers

Actual Trends in the Usability of Biochar as a High-Value Product of Biomass Obtained through Pyrolysis

Hydrothermal Conversion of Food Waste to Carbonaceous Solid Fuel—A Review of Recent Developments

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