Investigation of gasification reactivity and properties of biocarbon at high temperature in a mixture of CO/CO2

Wang, Liang; Skreiberg, Øyvind; Smith-Hanssen, Nicholas; Jayakumari, Sethulakshmy; Rørvik, Stein; Jahrsengene, Gøril; Turn, Scott Q.

doi:10.1016/j.fuel.2023.128233

Cited by 3 publications

(1 citation statement)

References 44 publications

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“…The carbon materials in FeMn production will react with CO 2 to CO, also known as the Boudouard reaction. 39 , 40 The reaction equation is shown as eq 1 . …”

Section: Metallurgical Properties Of Biocarbonsmentioning

confidence: 99%

Metallurgical Properties of Biocarbon in Ferroalloy Production─A Review

Han,

Tangstad

2024

ACS Omega

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The significant volume of CO 2 emissions contributes to global warming, which has drawn substantial attention. Metallurgical processes contribute to around 30% of these emissions, with ferroalloy smelting alone equivalent to the collective mean CO 2 emissions from 11.8 million people. Biocarbon emerges as a promising substitute for fossil reductants, and its research and industrial application have the potential to significantly curtail emissions on a relatively short time scale. As a result, extensive research has been conducted on biobased carbon materials and their practical utilization in metal production processes. In this review, an overview of the methodologies employed to assess the CO 2 reactivity, electrical conductivity, reactivity toward slag and SiO, and mechanical strength is illustrated. The impact of characterizations on its behavior within furnaces is concluded. Furthermore, the ongoing efforts to substitute traditional fuels with these environmentally friendly materials in the sintering process are introduced. The metallurgical properties of biocarbon are closely related to its chemical composition and physical characteristics, such as porosity, surface area, and internal structure. It has higher CO 2 reactivity, lower electrical conductivity, higher SiO reactivity, and lower mechanical strength than conventional coke. Some of the drawbacks can be addressed through techniques such as densification, pyrolysis, carbonization, and agglomeration, effectively mitigating these limitations. Additionally, the current application situation on sintering has demonstrated that the substitution of specific coke amounts with biobased reductants in the ore agglomeration process can save energy. The incorporation of biocarbon in metallurgy is a feasible and potential way to reduce CO 2 emissions, and this work deserves a valuable and significant endeavor.

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“…The carbon materials in FeMn production will react with CO 2 to CO, also known as the Boudouard reaction. 39 , 40 The reaction equation is shown as eq 1 . …”

Section: Metallurgical Properties Of Biocarbonsmentioning

confidence: 99%

Metallurgical Properties of Biocarbon in Ferroalloy Production─A Review

Han,

Tangstad

2024

ACS Omega

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Volatile matter characterization of birch biochar produced under pressurized conditions

Babinszki,

Czirok,

Johnson

et al. 2024

J Therm Anal Calorim

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The volatile matter (VM) content and composition of birch biochars produced at 320 °C under elevated pressure (0.1–11 MPa) and constant pressure or constant volume reactor conditions were characterized by thermogravimetry/mass spectrometry (TG/MS) and pyrolysis–gas chromatography/mass spectrometry (Py–GC/MS). Some of the thermal properties of the biochars and the composition of the VMs varied as a function of the maximal pressure applied during carbonization. The samples prepared at higher pressures released more volatiles up to 320 °C, while the maximal rate of thermal decomposition at around 440 °C showed decreasing tendency with the carbonization pressure. In terms of VM composition, the most apparent effect was the significant increase of the amounts of apoallobetulins from biochars prepared at elevated pressures, which were formed by dehydration, ring closure and rearrangement from the betulin content of birch. The change in the ratio of the evolved guaiacol and 4-methylguaiacol as well as that of syringol and 4-methylsyringol as a function of the maximal pressure of carbonization indicated a modification of the lignin decomposition mechanism.

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Malachite Green Dye Removal in Water by Using Biochar Produced from Pinus patula Pellet Gasification in a Reverse Downdraft Reactor

Henao-Toro,

Pérez,

Rubio-Clemente

2024

Sustainability

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The efficiency of the elimination of malachite green dye (MG) in water was investigated using biochar (BC) obtained from Pinus patula wood pellets (BC-WP). The biomass was gasified, reaching a temperature of 391.07 °C near the reactor wall. During the adsorption tests, three independent factors were considered: the solution pH, BC concentration, and the BC particle size, which were optimized using different study ranges (4–10, 6–12 g/L, and 150–600 μm, respectively) at 30 min of contact time. The response surface methodology was used through a face-centered central composite design for this purpose. The experimental results were analyzed to develop a quadratic regression model that fitted the experimental data achieved. The highest removal percentage of MG by BC-WP (94.25%) was attained under a solution pH of 10, a BC concentration of 12 g/L, and an average BC particle size of 225 μm. Furthermore, the validated regression model was found to explain 94.72% of the obtained results, demonstrating the ability of BC-WP to remove the target dye. Thus, a new and sustainable alternative to conventional systems for treating dye-polluted water is proposed, utilizing the solid by-product of the thermochemical process, contributing to the circular economy.

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Investigation of gasification reactivity and properties of biocarbon at high temperature in a mixture of CO/CO2

Cited by 3 publications

References 44 publications

Metallurgical Properties of Biocarbon in Ferroalloy Production─A Review

Metallurgical Properties of Biocarbon in Ferroalloy Production─A Review

Volatile matter characterization of birch biochar produced under pressurized conditions

Malachite Green Dye Removal in Water by Using Biochar Produced from Pinus patula Pellet Gasification in a Reverse Downdraft Reactor

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