Effect of potassium-permanganate modification on the microstructure and adsorption property of activated carbon

Wu, Zeliang; Qing, Peng-hui; Guo, Gui Bao; Shi, Bi; Hu, Qingcheng

doi:10.17222/mit.2019.068

Cited by 5 publications

(4 citation statements)

References 18 publications

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“…According to Wu et al 2019, the loading of potassium permanganate onto the activated carbon did not change the lattice structure of the carbon. The higher crystallinity on activated carbon with KMnO4 was because the distance of aromatic structure (d) decreased along with narrowing the width of aromatic structure.…”

Section: Intensity (Counts)mentioning

confidence: 99%

Characterization of ball-milled bamboo-based activated carbon treated with KMnO4 and KOH as activating agents

Qanytah

Syamsu

Fahma

et al. 2020

BioRes

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Bamboo-based activated carbon was made using the activating agents KOH and KMnO4 at high temperature. This study examined the ability of unmilled and ball-milled bamboo activated using KOH or KMnO4 to fulfil the activated carbon standard parameters. Chemical activation was done using KOH and KMnO4 at 2.5% and 5% concentration, heated at 800 °C, and steamed for 1 hour. Sample size was reduced to 500 nm using high energy ball-milling at 500 rpm for 80, 150, or 180 min. Analysis included the yield, water content, ash content, volatile matter content, burn-off weight percentage, morphology analysis, functional groups (Fourier transform infrared spectroscopy, FTIR), crystallinity analysis (X-ray diffraction, XRD), and Brunauer, Emmett, and Teller (BET) analysis. Ball-milling treatment for 150 min produced activated carbon of 449 nm in size and a particle distribution index (PDI) score of 0.66. Ball milled activated carbon from the experiment had a pore radius ranging from 1.18 to 2.49 nm. The activated carbon that met the criteria of ANSI/AWWA B604-12 (2012) standard for moisture content, iodine number, and JIS K 1474 (1967) standard for methylene blue adsorption level and surface area were milled activated carbon with activator KMnO4 2.5%.

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Section: Intensity (Counts)mentioning

confidence: 99%

Characterization of ball-milled bamboo-based activated carbon treated with KMnO4 and KOH as activating agents

Qanytah

Syamsu

Fahma

et al. 2020

BioRes

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“…The TEM images depicted that particles were arranged randomly and overlapping one another. The particles of carbonized carbons appeared relatively round, whereas in AC the particles displayed rough and uneven shapes . The structure was amorphous because of the randomly arranged particles and a rough and uneven shape.…”

Section: Results and Discussionmentioning

confidence: 99%

“…The particles of carbonized carbons appeared relatively round, whereas in AC the particles displayed rough and uneven shapes. 67 The structure was amorphous because of the randomly arranged particles and a rough and uneven shape. The graph of carbonized carbon (a 2 ) showed that most particles were found in the range of 21 to 60 nm.…”

Section: Resultsmentioning

confidence: 99%

Synthesis, Activation, and Characterization of Carbon Fiber Precursor Derived from Jute Fiber

Hossen,

Islam,

Hoque

et al. 2024

ACS Omega

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Activated carbon (AC) fiber is a carbonaceous material with a porous structure that has a tremendous scope of application in different fields. Conventionally, AC is derived from fossil fuel-based raw materials like polyacrylonitrile (PAN) and pitch. In this work, AC was synthesized from ecofriendly, renewable, and ubiquitous jute fiber. Systematically, the jute fiber was washed and pretreated with NaOH. Raw jute and NaOH-treated jute were carbonized/pyrolyzed at 500 °C for 1 h in presence of N 2 gas. The carbonized carbon was activated with H 3 PO 4 and KOH and again pyrolyzed at 650 °C for 1.5 h maintaining the inert condition. The different features of activated carbons were characterized with field emission-scanning electron microscope, energy-dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM), X-ray diffraction (XRD), and thermogravimetric analysis. The average yield of carbonized and activated carbons was recorded at 19 and 13.8%, respectively. The scanning electron microscopic images confirmed a honeycomb-like porous structure. It was observed that KOH-activated carbon exhibited a more porous structure than the H 3 PO 4 -activated carbons. The average pore diameter of activated carbons was noted to be 1.3 μm. The pore density was higher in case of KOH-activated carbons accounting for 2.15 pore/μm. The EDX analysis showed that H 3 PO 4 -activated carbons had more than 90% carbon atoms indicating a significant carbon content. The TEM images revealed that AC particles were in the nanoscale range. The average particle sizes of H 3 PO 4 -activated carbon and KOHactivated carbon were 36.38 and 32.8 nm, respectively. The XRD study demonstrated the highly disordered and low level of crystallinity of AC. It was detected that the AC showed much higher thermal resistance than the jute fiber. The H 3 PO 4 -activated carbon obtained from NaOH-treated jute remained at 84% even after 500 °C. A higher thermal resistance was achieved with H 3 PO 4activated carbon since it contains 0.56% phosphorus, which was confirmed by EDX investigation. It was found that a higher carbon yield was obtained from NaOH-treated jute. The porous structure of the material showed that it could be used as an adsorbent. Due to its high thermal stability, it is recommended for flame retardants and heat insulation applications as well.

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“…KOH is a potent alkaline activating agent [9]. KOH is the most effective activating agent for preparing AC with an extremely high specific surface area.…”

Section: Introductionmentioning

confidence: 99%

Ethylene Adsorption on Activated Carbon Paper Liner: A Model Kinetic Study

Qanytah

Syamsu

Fahma

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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The ability of activated carbon as an adsorber is depended on activating agent used for the activation process. An industrial application of the ethylene adsorption process as well as the design of the necessary equipment requires an accurate model to determine the effect of various factors on the efficiency of the process. The model is needed to predict the efficient activating agent to be applied in carbon activation. One ml of gas containing 200 ppm ethylene was injected into gas-tight jars, to which 4 sheets of nanopore activated carbon paper were placed. The ethylene concentration was measured every 5 minutes until 90 minutes using gas chromatography. The concentration of ethylene absorbed by the nanopore activated carbon paper, then calculated to construct a kinetics model of absorption. Data were analyzed using 4 kinetics models: nonlinear pseudo-first-order, nonlinear pseudo-second-order, Elovich, and Avrami kinetic models. The best adsorption kinetics model that described ethylene adsorption kinetics by nanopore activated carbon paper was the nonlinear pseudo-first-order, with equation model: qt = 1.35734 (1-exp0.15312 t). The compiled model has a match with R2 = 0.9981. The adsorption mechanisms and kinetics aspects was important on the use of adsorbents to remove ethylene in packaging and storage.

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Effect of potassium-permanganate modification on the microstructure and adsorption property of activated carbon

Cited by 5 publications

References 18 publications

Characterization of ball-milled bamboo-based activated carbon treated with KMnO4 and KOH as activating agents

Characterization of ball-milled bamboo-based activated carbon treated with KMnO4 and KOH as activating agents

Synthesis, Activation, and Characterization of Carbon Fiber Precursor Derived from Jute Fiber

Ethylene Adsorption on Activated Carbon Paper Liner: A Model Kinetic Study

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