Activated carbon prepared from corn biomass by chemical activation with potassium hydroxide

Doczekalska, Beata; Bartkowiak, M.; Łopatka, Hubert; Zborowska, Magdalena

doi:10.15376/biores.17.1.1794-1804

Cited by 10 publications

(2 citation statements)

References 19 publications

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“…The structure of corn cobs consists of components such as lignin 6%, hemicellulose 36%, and cellulose 41%. Corn cobs have a carbon content level that reaches 80.5%, while the ash content is low [17].…”

Section: Introductionmentioning

confidence: 99%

Comparison of natural corn cob and carbon corn cob in the purification of used cooking oil with shaker operation

Haryanto,

Tambun,

Sinaga

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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The research aims to determine the adsorption ability and modeling of adsorption kinetics to purify used cooking oil using natural and carbonized corn cob adsorbent, which is economical, efficient, and sustainable due to its low price, renewability, and simplicity. Samples of used cooking oil were taken as much as 100 ml with an adsorbent mass of 3 g and particle size of 50 mesh and stirred using a shaker. Based on the results, it was found that the effect of carbonization was able to reduce the turbidity of used cooking oil, whereas for the use of natural corn cob adsorbent, at 20 minutes, turbidity of 59.0 NTU was obtained and 45.2 NTU was obtained after the adsorption process for 5 hours, while for the use of corn cob carbon adsorbent, a turbidity of 62.8 NTU was obtained for the same adsorbent size and 39.8 NTU was obtained after the adsorption process for 5 hours. Chemical interaction trends were also obtained, as shown in the second-order pseudo graph with coefficient of determination (R2) values close to 1 using natural corn cob and corn cob carbon adsorbents, namely 0.9965 and 0.9959.

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Section: Introductionmentioning

confidence: 99%

Comparison of natural corn cob and carbon corn cob in the purification of used cooking oil with shaker operation

Haryanto,

Tambun,

Sinaga

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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“…Activation involves the removal of impurities and the development of a porous structure with a large surface area. KOH acts as a chemical activator that reacts with the precursor material, leading to the formation of pores and increasing the surface area [22][23]. Stone Apple shell was chosen for this study for AC preparation.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Adsorption Capacity of Amine Modified Activated Carbon from Stone Apple for CO2 Capture

Das

2023

Preprint

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Increase in atmospheric Carbon dioxide concentration due to industrial activity of more than a century has led to the problem of global warming, which hints at a catastrophic climatic consequence for the whole world. The reduction in the emissions of greenhouse gases possesses a challenge in addressing the issue of climate change. Adsorption is considered as a competitive solution. This present research focus separation of post combustion capture carbon dioxide from flue gas by adsorption mechanism as it needs less energy and amine modified activated carbon prepared from stone apple can be used as solid adsorbents. Two different amine solution i.e Ethylene Diamine(EDA) and Tetra Ethylene Penta Amine(TEPA) solution were used as impregnating agent for activated carbon with impregnation ratio 0.4 (EDA-AC(0.4) and TEPA-AC(0.4). Further the amine impregnated activated carbons were characterized using various techniques such as Proximate Analysis, Ultimate Analysis, Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy(EDS), Fourier Transform Infrared spectroscopy(FTIR), BET surface area analyser, Thermo Gravimetric Analysis (TGA), X-Ray Diffraction(XRD). A remarkable increase in the adsorption capacity was observed and the maximum adsorption (36.05 mg/g) is found in Ethylene diamine impregnated activated carbon having impregnation ratio 0.4(EDA-AC(0.4) at 25°C and 1 atm and break through time of 214 min.

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Activated carbons prepared from stump wood of various tree species by chemical activation and their application for water purification

Doczekalska,

Ziemińska,

Kuśmierek

et al. 2024

Eur. J. Wood Prod.

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Activated carbons (ACs) were produced from stump wood of different tree species, such as pine, bearded birch, and American black cherry using chemical activation with KOH and NaOH. The activated carbons were characterized and evaluated as adsorbents for eliminating bisphenol A (BPA) from aqueous solutions. The kinetics of adsorption and equilibrium adsorption, as well as the impact of solution pH and ionic strength, were examined. The kinetics were analyzed using the pseudo-first-order, pseudo-second-order, intra-particle diffusion, and Boyd kinetic models. The findings suggest that the adsorption kinetics followed the pseudo-second-order model. Additionally, the film diffusion was found to be the rate-determining step for the adsorption of BPA on all of the activated carbons. The data for adsorption equilibrium were tested using the Langmuir, Freundlich, and Sips equations, with results indicating that the Langmuir model was the most applicable. The capacity of activated carbons to adsorb BPA was dependent on their surface area. Higher BET surface areas resulted in increased adsorption. The birch-derived AC activated by NaOH had a monolayer adsorption capacity of 1.980 mmol/g, while the AC from black cherry activated with KOH had 2.195 mmol/g. The adsorption of BPA was pH-dependent, and no effect of ionic strength was observed. The activated carbons had very high adsorption capacities, indicating that stump wood is an excellent precursor for the production of highly effective adsorbents.

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Activated carbon prepared from corn biomass by chemical activation with potassium hydroxide

Cited by 10 publications

References 19 publications

Comparison of natural corn cob and carbon corn cob in the purification of used cooking oil with shaker operation

Comparison of natural corn cob and carbon corn cob in the purification of used cooking oil with shaker operation

Comparison of Adsorption Capacity of Amine Modified Activated Carbon from Stone Apple for CO2 Capture

Activated carbons prepared from stump wood of various tree species by chemical activation and their application for water purification

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