High Efficiency Regeneration Performance of Exhausted Activated Carbon by Superheated Steam and Comparison with Conventional Chemical Regeneration Method

Ying, Xinyi; Kim, Gisung; Han, Inwoo; Sheng, Jiayi; Mei, Qiwen; Kim, Yangwook

doi:10.1007/s12205-022-1454-x

Cited by 11 publications

(6 citation statements)

References 31 publications

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“…In industrial settings, tanks are often filled with AC to adsorb pollutants in the fluids passing through the tanks . As the use time of AC increases, its adsorption capacity will weaken.…”

Section: Regeneration Of Acmentioning

confidence: 99%

“…As the use time of AC increases, its adsorption capacity will weaken. Therefore, it is necessary to replace deteriorated, depleted, or saturated AC with new or regenerated AC to restore its adsorption capacity . Generally, the use of regenerated AC is more popular than the replacement of new AC because regeneration not only saves resources and reduces secondary pollution but also reduces operating costs. , The regeneration methods of AC can be divided into desorption and decomposition.…”

Section: Regeneration Of Acmentioning

confidence: 99%

“…In industrial settings, tanks are often filled with AC to adsorb pollutants in the fluids passing through the tanks. 137 As the use time of AC increases, its adsorption capacity will weaken. Therefore, it is necessary to replace deteriorated, depleted, or saturated AC with new or regenerated AC to restore its adsorption capacity.…”

Section: Summary Of Applicationsmentioning

confidence: 99%

“…Decomposition of AC works by breaking down adsorbates on the surface of the adsorbent and is classified into electrochemical, microbiological, chemical, and ultrasonic (which is also a desorption technique) methods. 30,140,141 Ying et al 137 compared the effects of superheated steam regeneration and NaOH regeneration on phenol-saturated AC and carried out six-cycle adsorption/regeneration experiments under the best working conditions. The results showed that the regeneration efficiency of superheated steam decreased uniformly and steadily during each cycle of the adsorption/ regeneration experiment, while the regeneration efficiency of NaOH rapidly decreased after the first regeneration cycle and impurities gradually accumulated on the surface of regenerated AC with increasing cycle times.…”

Section: Summary Of Applicationsmentioning

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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“…In industrial settings, tanks are often filled with AC to adsorb pollutants in the fluids passing through the tanks . As the use time of AC increases, its adsorption capacity will weaken.…”

Section: Regeneration Of Acmentioning

confidence: 99%

Section: Regeneration Of Acmentioning

confidence: 99%

Section: Summary Of Applicationsmentioning

confidence: 99%

Section: Summary Of Applicationsmentioning

confidence: 99%

See 2 more Smart Citations

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

Zhao

Mai

et al. 2023

Energy Fuels

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show abstract

“…Common regeneration methods included calcination regeneration, chemical regeneration, and biological regeneration. The retention of chemical solvents on the adsorbent and the residual of biological intermediates on the adsorbent would hinder the adsorption of pollutants on the adsorbent in subsequent cycles, and the regeneration efficiency would be significantly reduced after multiple cycles [69]. In contrast, the calcination method was the most widely used and the most mature regeneration method with simple operation and high regeneration efficiency.…”

Section: Thermodynamic Studymentioning

confidence: 99%

Adsorption Characteristics and Electrochemical Behaviors of Methyl Blue onto Magnetic Mg_xCo_yZn_(1-x-y)Fe₂O₄ Nanoparticles

Yang

Han

et al. 2023

Adsorption Science & Technology

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Magnetic MgxCoyZn(1-x-y)Fe2O4 nanoparticles were successfully prepared by the rapid combustion approach, and SEM, XRD, VSM, EDX, and FTIR techniques were applied for their characterization. The influence of the element ratios (Mg2+, Co2+, and Zn2+) in magnetic MgxCoyZn(1-x-y)Fe2O4 nanoparticles on their properties was explored. To acquire a larger specific surface area for better adsorption of methyl blue (MB), magnetic Mg0.4Co0.5Zn0.1Fe2O4 nanoparticles calcined at 400°C for 2 h with 25 mL anhydrous ethanol were selected, and their average particle size and the saturation magnetization were about 81.3 nm and 13.5 emu·g-1, respectively. Adsorption kinetics models and adsorption isotherm models were applied to research the adsorption characteristics of MB onto magnetic Mg0.4Co0.5Zn0.1Fe2O4 nanoparticles. The pseudo-second-order kinetics model ( R 2 > 0.99 ) and Temkin isotherm model ( R 2 = 0.9887 ) were the most consistent with the data, indicating that the adsorption was the chemical multilayer adsorption mechanism, and the process was an exothermic reaction. The E of the Dubinin-Radushkevich (D-R) isotherm model was 0.2347 KJ·mol-1, indicating the adsorption involved physical adsorption besides chemical adsorption. The Δ G 0 and Δ H 0 ( Δ H 0 = − 10.38 KJ·mol-1) of the adsorption process of MB adsorbed onto magnetic Mg0.4Co0.5Zn0.1Fe2O4 nanoparticles measured through the thermodynamic experiment were both less than 0, which proved that the process was a spontaneous exothermic reaction. The adsorption capacity of MB onto magnetic Mg0.4Co0.5Zn0.1Fe2O4 nanoparticles increased with the pH of MB solution increasing from 2 to 4 at room temperature, and it had no significant change when the pH of MB solution was 4-12, while the relative removal rate was 98.75% of the first one after 2 cycles. The electrochemical impedance spectroscopy (EIS) and the cyclic voltammetry (CV) data further demonstrated that MB was adsorbed onto magnetic Mg0.4Co0.5Zn0.1Fe2O4 nanoparticles.

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Influence mechanism of pressure on the toluene desorption from active carbon under supercritical CO2

Sun¹,

Zhu²,

Huang³

et al. 2023

J Nanopart Res

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High Efficiency Regeneration Performance of Exhausted Activated Carbon by Superheated Steam and Comparison with Conventional Chemical Regeneration Method

Cited by 11 publications

References 31 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

Adsorption Characteristics and Electrochemical Behaviors of Methyl Blue onto Magnetic Mg_xCo_yZn_(1-x-y)Fe₂O₄ Nanoparticles

Influence mechanism of pressure on the toluene desorption from active carbon under supercritical CO2

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High Efficiency Regeneration Performance of Exhausted Activated Carbon by Superheated Steam and Comparison with Conventional Chemical Regeneration Method

Cited by 11 publications

References 31 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

Adsorption Characteristics and Electrochemical Behaviors of Methyl Blue onto Magnetic MgxCoyZn(1-x-y)Fe2O4 Nanoparticles

Influence mechanism of pressure on the toluene desorption from active carbon under supercritical CO2

Contact Info

Product

Resources

About

Adsorption Characteristics and Electrochemical Behaviors of Methyl Blue onto Magnetic Mg_xCo_yZn_(1-x-y)Fe₂O₄ Nanoparticles