Plane tree seed biomass used for preparation of activated carbons (AC) derived from pyrolysis. Modeling the activation process

Dodevski, Vladimir; Janković, Bojan; Stojmenović, Marija; Krstić, Sanja; Popović, Jasmina; Pagnacco, Maja C.; Popović, M.; Pašalić, Snežana

doi:10.1016/j.colsurfa.2017.03.003

Cited by 29 publications

(14 citation statements)

References 51 publications

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“…The C-H bonds were probably broken during the thermal conversion process to form a more stable C=C bonds, that was observed at 1580 cm −1 for all the charred products. Moreover, the C=O stretching observed at 1734 cm −1 in the raw biomass was absent in charred products, as surface oxygenated groups were converted to CO and CO 2 during thermal conversion [35,[48][49][50]. The bands at around 1580 cm −1 and 1070 cm −1 observed in all charred products are indicative of C=C bond stretching ascribed to aromatic compounds.…”

Section: Characterisationmentioning

confidence: 99%

Preparation and characterisation of activated carbon from Vitisvinifera leaf litter and its adsorption performance for aqueous phenanthrene

et al. 2020

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The adsorption of phenanthrene onto activated carbons produced from Vitis vinifera leaf litter (a waste plant biomass) was investigated in this study. Zinc chloride (ZnCl 2) and phosphoric acid (H 3 PO 4) were utilised as activating agents in producing the activated carbons. The characterisation of the activated carbons was achieved with Fourier transform infrared spectroscopy (for surface functional groups), scanning electron microscopy (for surface morphology) and Brunauer-Emmett-Teller (BET) (for surface area determination). The adsorption of phenanthrene onto the activated carbons was optimised in terms of solution pH, adsorbent dosage, initial concentration of adsorbate solution and contact time. Experimental results showed that H 3 PO 4 modified activated carbon gave better yield (up to 58.40%) relative to ZnCl 2 modified activated carbon (only up to 47.08%). Meanwhile, surface characterisation showed that ZnCl 2 modification resulted in higher BET surface area (up to 616.60 m 2 /g) and total pore volume (up to 0.289 cm 3 /g) relative to BET surface area of up to 295.49 m 2 /g and total pore volume of up to 0.185 cm 3 /g obtained from H 3 PO 4 modified activated carbons. Adsorption equilibrium data fitted well into Freundlich isotherm model relative to other applied isotherm models, with maximum K f value of 1.27 for ZnCl 2 modified activated carbon and 1.16 K f value for H 3 PO 4 modified activated carbon. The maximum adsorption capacity for ZnCl 2 and H 3 PO 4 activated carbons for the removal of phenanthrene were 94.12 and 89.13 mg/g, respectively. Kinetic studies revealed that dynamic equilibrium was reached at 80 min contact time. Experimental data fitted best into the Elovich kinetic model relative to other kinetic models, based on the correlation coefficient (R 2) values obtained from kinetic studies. Chemisorption was deduced as a major phenanthrene removal pathway from aqueous solution and the physicochemical characteristics of the adsorbents have major influence on phenanthrene removal efficiencies.

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Section: Characterisationmentioning

confidence: 99%

Preparation and characterisation of activated carbon from Vitisvinifera leaf litter and its adsorption performance for aqueous phenanthrene

et al. 2020

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“…Proximate and ultimate analysis procedure together with lignicellulosusic content determination for raw PTS material can be found elsewhere [8]…”

Section: Proximate/ultimate Analysis and Lignocellulosic Compositionmentioning

confidence: 99%

Carbon dioxide activation of the plane tree seeds derived bio-char: Kinetic properties and application

et al. 2020

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Goal of this work is to establish technical feasibility and fundamentals of producing activated carbon from plane tree seeds (PTS) biomass for porous materials derivation. Bio-chars produced via carbonization from PTS precursor were activated in CO 2 at 750 and 850 ºC, during various residence times. Their surface area and porosity were characterized by N 2 adsorption at 77 K. Surface areas of activated carbons can be correlated with kinetics mechanism and activation energy magnitudes of oxidation reaction by CO 2 , which are closely related to applied activation temperature. Result showed that high temperature activated carbon had higher gas adsorption as compared to activated carbon obtained from lower temperature during two hour residence time. Breakthrough behavior was detected at 850 o C where surface reactions dominate, and it is characterized by autocatalytic kinetic model under designed conditions. Both, temperature and CO 2 concentration in vicinity of solid surface affect on breakthrough time of adsorbent. Derived bio-chars are converted into high quality activated carbons, with surface area of 776.55 m 2 g-1 , where micropores with pore diameters less than 2 nm prevail. Produced activated carbons have properties comparable with commercially available activated carbons, which can be successfully used for removal of harmful gaseous pollutants toward air purification.

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“…AC has been investigated for the capture of noxious gases [86,87]. This is due to reduced cost of production, large surface area, ease of modification of pores, good thermal and chemical stability, hydrophobic nature, stability in the presence of heat and chemical resistance [88]. AC shows promising potential for practical applications in terms of balance of performance [89] considering cost of production, benign effect on the environment, availability of precursor materials [90,91] and sustainability [92] and have been reported to exhibit reusability, promising adsorption kinetics [26] and stability after several sorption cycles [63], requiring low regeneration energy [93].…”

Section: Activated Carbon (Ac)mentioning

confidence: 99%

Adsorbents for Noxious Gas Sequestration: State of the Art

Aimikhe

Eyankware

2019

JSRR

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Adsorbents such as metal-organic frameworks (MOFs), polymers, activated carbon (AC), and membranes are becoming prominent for CO2, SO2, H2S and NH3 capture and in some cases, storage. Using the standard adsorbent properties (SAPs) such as adsorption capacity, selectivity, permeability/permeance, regenerability and reusability, ease of functionability and tunability, thermal and chemical stability, suitable candidates for noxious gas sequestration can be determined. To foster the development and selection of a more efficient adsorbent, proper documentation of adsorbent performance in terms of SAPs is crucial. In this study, a critical review of metal-organic framework (MOF), polymer, activated carbon (AC) and membrane adsorbents was performed. Using the SAPs, an up to date comparative analysis was done to select the best performing adsorbents. The results of the comparative analysis were then used to categorize the adsorbents' suitability for pre-combustion and post-combustion applications. A perspective of future study on adsorbents for noxious gas sequestration was also presented.

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Plane tree seed biomass used for preparation of activated carbons (AC) derived from pyrolysis. Modeling the activation process

Cited by 29 publications

References 51 publications

Preparation and characterisation of activated carbon from Vitisvinifera leaf litter and its adsorption performance for aqueous phenanthrene

Preparation and characterisation of activated carbon from Vitisvinifera leaf litter and its adsorption performance for aqueous phenanthrene

Carbon dioxide activation of the plane tree seeds derived bio-char: Kinetic properties and application

Adsorbents for Noxious Gas Sequestration: State of the Art

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