Characterization of structural and chemical modifications during the steam activation of activated carbons

Muthmann, Johanna; Bläker, Christian; Luckas, Michael; Schledorn, Carsten; Bathen, Dieter

doi:10.1016/j.micromeso.2020.110549

Cited by 21 publications

(8 citation statements)

References 41 publications

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“…This is because a longer activation time enables the full release of volatile matter and generates more micropores, which thus results in a greater iodine value. Muthmann et al also found that the BET specific surface area and total pore volume of CAC increased with increasing activation time during the steam activation process. Jing et al used Hulunbuir lignite semicoke carbonized at 650 °C as a raw material to prepare AC by steam activation; they comprehensively considered the effects of activation time, activation temperature, and steam flow rate on the structure and performance of AC and determined the optimal activation conditions: the activation time was 70 min, the activation temperature was 700 °C, and the steam flow was 150 mL/min.…”

Section: Preparation Of Cacmentioning

confidence: 91%

“…The preparation of AC by chemical activation can be carried out simultaneously with carbonization or separately. Whether physical activation or chemical activation is selected, the carbonization temperature, carbonization time, type of activator, active gas flow (physical activation) or impregnation ratio (chemical activation), activation temperature, and activation time are all important factors affecting the structure and performance of the resulting AC. − The structure and surface functional groups of AC are important factors affecting its performance. Modification can improve the structure and properties of AC to further improve its performance .…”

Section: Introductionmentioning

confidence: 99%

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Review on Coal-Based Activated Carbon: Preparation, Modification, Application, Regeneration, and Perspectives

Zhao

Mai

et al. 2023

Energy Fuels

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Coal is not only a type of fuel but also a precious resource with dual value attributes. Coal is usually used for combustion and electricity generation and is also used as a feedstock in the production of fuels, chemicals, and other high value-added products to improve efficiency. Among these products, coal-based activated carbon is an important part of the high value-added and resource utilization of coal. In this paper, the relevant research on coal-based activated carbon in recent decades is reviewed, including raw material selection, preparation process and mechanism, modification methods, application status, and regeneration methods. Finally, the existing problems and future research directions in the field of coal-based activated carbon are proposed, which has great significance for realizing the high valueadded utilization of coal resources.

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Section: Preparation Of Cacmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Review on Coal-Based Activated Carbon: Preparation, Modification, Application, Regeneration, and Perspectives

Zhao

Mai

et al. 2023

Energy Fuels

View full text Add to dashboard Cite

show abstract

“…Different steam activation parameters such as temperature and reaction time have different activation effects. With the increase of activation time, the inner surface and the total pore volume of the activated carbon become larger, the pore width distribution becomes wider, and the proportion of mesopores increases [52]. Young-Jung Heo et al [53] used cellulose fibers as feedstock and activated them at different temperatures by steam activation.…”

Section: Steam Activationmentioning

confidence: 99%

Biomass-based carbon materials for CO2 capture: A review

Quan

Zhou

Wang

et al. 2023

Journal of CO2 Utilization

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“…Total surface acidic groups (lactonic, phenolic and carboxylic) are all determined by NaOH-neutralization. Lactonic and carboxylic groups are determined by Na2CO3neutralization, and only carboxylic groups by NaHCO3-neutralization [29].…”

Section: Analysis Of the Surface Acidic Functional Groups (Safg) Of The Adsorbentsmentioning

confidence: 99%

Adsorption Of Methylene Blue from Aqueous Solution with Sulfuric Acid Activated Corn Cobs: Equilibrium, Kinetics, and Thermodynamics Assessment

Bozbeyoglu

Duran

Baltacı

et al. 2020

Hittite J. Sci. Eng.

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N atural waters are getting more and more polluted due to the activities of many industry organizations such as juice, coffee, and cereal processing plants. The contamination of the water used for drinking and other purposes by partially treated or untreated discharges from chemical industries, petrochemical industries, oil refineries, oil spills, rolling steel mills, unrefined domestic sludge, and pesticide runoff threaten both human health and environmental health [1]. Dyestuffs, one of many different types of contaminants, are among the chemicals that pose this threat. Synthetic dyestuffs are widely used worldwide in textile staining processes. Synthetic dyestuff classes are the azo type, including reactive, disperse, and acid dyes. Azo dyes account for 65% of the total dye production in the world [2]. Today, biological treatment is the most widely used method to decompose dye waste. However, this process is not very successful in removing dyes effectively. For this reason, dyes

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Characterization of structural and chemical modifications during the steam activation of activated carbons

Cited by 21 publications

References 41 publications

Review on Coal-Based Activated Carbon: Preparation, Modification, Application, Regeneration, and Perspectives

Review on Coal-Based Activated Carbon: Preparation, Modification, Application, Regeneration, and Perspectives

Biomass-based carbon materials for CO2 capture: A review

Adsorption Of Methylene Blue from Aqueous Solution with Sulfuric Acid Activated Corn Cobs: Equilibrium, Kinetics, and Thermodynamics Assessment

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