Key factors and primary modification methods of activated carbon and their application in adsorption of carbon-based gases: A review

Wang, Xiaohong; Cheng, Hairong; Ye, Guangzheng; Fan, Jie; Yao, Fan; Jiao, Yujun; Zhu, Wenfu; Huang, Haomin; Ye, Daiqi

doi:10.1016/j.chemosphere.2021.131995

Cited by 72 publications

(40 citation statements)

References 138 publications

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“…34,54 The principal interaction should be the π−π interaction between the π−electron system on ACs and aromatic structure of MB, and the hydrogen bonding interactions between the carboxyl/hydroxyl functional groups and MB molecules. 44,55,56 In addition, the electrostatic interactions with cationic MB were introduced as the mAC's surface is negatively charged (O − ). 8,9,12 Additionally, the introduction of iron oxides on the surface of mAC leads to the vastly improved MB adsorption as well, which should be attributed to the enhanced electrostatic interaction between iron oxides and MB molecules.…”

Section: Adsorption Mechanismsmentioning

confidence: 99%

Lignin-Derived Magnetic Activated Carbons for Effective Methylene Blue Removal

Keffer

Hsieh

et al. 2022

Ind. Eng. Chem. Res.

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Large-scale environmental remediation of polluted water requires an effective and recyclable adsorbent produced from an abundant, low-cost, and renewable feedstock via a simple processing procedure. In this work, we demonstrate that lignin-derived magnetic activated carbons (mACs) uniquely satisfy these five criteria for (i) high-performance adsorption, (ii) high regeneration efficiency, (iii) feedstock economic and environmental viability, (iv) single-step processing, and (v) large-scale production. The mACs are synthesized via an efficient cocarbonization and activation with simultaneous impregnation of ferric sulfate. The Langmuir model closely fits the adsorption of methylene blue (MB) by mACs within the temperature range of 298–323 K, where the adsorption capacity increases as temperature increases. This capacity increased from 55.0 mg g–1 to 220.2 mg g–1 with the presence of magnetic nanoparticles. In addition, the magnetite nanoparticles on the activated carbon surface significantly improve its recycling ability with a removal percentage above 95% after four cycles for 5:1 mAC.

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Section: Adsorption Mechanismsmentioning

confidence: 99%

Lignin-Derived Magnetic Activated Carbons for Effective Methylene Blue Removal

Keffer

Hsieh

et al. 2022

Ind. Eng. Chem. Res.

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“…Developing and testing VOC mitigating materials is an ongoing challenge. 22,23 While a variety of porous materials that adsorb small molecules have been realized, 24 in practice activated carbon [25][26][27] is widely used for VOC removal due to its low cost, durability, ease of use, low hydrodynamic resistance, wide-spread commercial availability and general flexibility in interfacing with various equipment types. Additionally, activated carbon requires no external energy source such as heating or irradiation in order to function via physisorption, nor does it require cooling to low temperature.…”

Section: Introductionmentioning

confidence: 99%

A peripherally located air recirculation device containing an activated carbon filter reduces VOC levels in a simulated operating room

Carroll

Kirschman

2022

Preprint

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Electrosurgery procedures produce airborne contaminants including volatile organic compounds (VOCs). The effectiveness of commercial grade activated carbon at removing toluene, a typical VOC, from the air in an enclosed simulated operating room when interfaced with an air recirculation device was tested. The concentration of toluene in the air was measured using gas sensitive semiconductor VOC sensors. When the air recirculation device containing activated carbon was turned on, the concentration of toluene in the air decayed exponentially. When the device was off, the toluene concentration reduced much more slowly. After 130 min., a VOC sensor placed near the air recirculation device showed VOC reductions of approximately 30% when the device is on and less than 1% when the device is off. Changing the activated carbon filter after 22 h of constant use showed an abrupt increase in the rate of toluene removal.

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“…Developing and testing VOC mitigating materials is an ongoing challenge. − While a variety of porous materials that adsorb small molecules have been realized, in practice activated carbon − is widely used for VOC removal due to its low cost, durability, ease of use, low hydrodynamic resistance, widespread commercial availability, and general flexibility in interfacing with various equipment types. Additionally, activated carbon requires no external energy source such as heating or irradiation to function via physisorption, nor does it require cooling to low temperature.…”

Section: Introductionmentioning

confidence: 99%

A Peripherally Located Air Recirculation Device Containing an Activated Carbon Filter Reduces VOC Levels in a Simulated Operating Room

Carroll¹,

Kirschman²

2022

ACS Omega

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Electrosurgery procedures produce airborne contaminants including volatile organic compounds (VOCs). The effectiveness of commercial grade activated carbon at removing toluene, a typical VOC, from the air in an enclosed simulated operating room (OR) when interfaced with an air recirculation device was tested. The concentration of toluene in the air was measured using gas sensitive semiconductor VOC sensors. When the air recirculation device containing activated carbon was turned on, the concentration of toluene in the air decayed exponentially. When the device was of f, the toluene concentration reduced much more slowly. After 130 min, a VOC sensor placed near the air recirculation device showed VOC reductions of approximately 30% when the device is on and less than 1% when the device is of f. Changing the activated carbon filter after 22 h of constant use showed an abrupt increase in the rate of toluene removal.

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Key factors and primary modification methods of activated carbon and their application in adsorption of carbon-based gases: A review

Cited by 72 publications

References 138 publications

Lignin-Derived Magnetic Activated Carbons for Effective Methylene Blue Removal

Lignin-Derived Magnetic Activated Carbons for Effective Methylene Blue Removal

A peripherally located air recirculation device containing an activated carbon filter reduces VOC levels in a simulated operating room

A Peripherally Located Air Recirculation Device Containing an Activated Carbon Filter Reduces VOC Levels in a Simulated Operating Room

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