Effect of combined activation on the preparation of high porous active carbons from granulated post-consumer polyethyleneterephthalate

Sych, N. V.; Кartel, M. T.; Tsyba, N. N.; Strelko, V. V.

doi:10.1016/j.apsusc.2005.10.009

Cited by 28 publications

(7 citation statements)

References 6 publications

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“…The estimated SA of the AC sample was 977.88 m 2 /g, which is comparable with those established for AC samples created from PET waste via different methods. The AC prepared from PET waste via carbonization followed by steam activation had an SA of 1170 m 2 /g, 40 whereas AC synthesized by combined chemical–steam activation possessed an SA of 1050 m 2 /g 41 . The variance in the SA values of the AC samples prepared from the same precursor might be ascribed to the conditions employed during the synthesis of the AC, the type of its preparation method, and the technique used to calculate the SA.…”

Section: Resultsmentioning

confidence: 99%

Polyethylene terephthalate waste‐derived activated carbon for adsorptive desulfurization of dibenzothiophene from model gasoline: Kinetics and isotherms evaluation

Fadhil

Saeed

2020

Asia-Pacific J Chem Eng

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The present study concentrates on the preparation of activated carbon (AC) from a low‐cost precursor, namely, polyethylene terephthalate waste, as a potential alternative adsorbent to commercially activated carbon for desulfurization of model gasoline at ambient temperature. Polyethylene terephthalate was carbonized at 450°C, and the produced char was steam activated at 750°C for 90 min to prepare the AC. The morphology, crystallinity, and surface functional groups of as‐synthesized adsorbent were examined by scanning electron microscopy, X‐ray diffraction, and Fourier transform infrared spectroscopy, respectively. The so‐synthesized AC was employed in the adsorptive desulfurization of dibenzothiophene (DBT) from model gasoline. The effect of the initial concentration of DBT, AC dose, temperature, and contact time on the removal efficiency of DBT was investigated. The maximum desulfurization level (97.10%) was performed at 40°C using 0.30 g of the AC for 60 min. The Langmuir model best demonstrated the adsorption results with an adsorption capacity of 49.56 mg/g. The pseudo‐second‐order model best described the adsorption kinetics of DBT by the so‐synthesized AC. The obtained consequences exhibited that AC with high desulfurization capability could be synthesized from polyethylene terephthalate waste.

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Section: Resultsmentioning

confidence: 99%

Polyethylene terephthalate waste‐derived activated carbon for adsorptive desulfurization of dibenzothiophene from model gasoline: Kinetics and isotherms evaluation

Fadhil

Saeed

2020

Asia-Pacific J Chem Eng

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“…A review of the literature has shown that the focus of most studies is on the physical activation of PET with steam or CO 2 to produce AC 1, 3, 4, 10–15; however, in several works, PET activation with chemical agents such as NaOH 16, 17, KOH 17, 18, H 2 SO 4 19, 20, and HNO 3 21 was investigated. The use of chemical materials as activating agents, simultaneous carbonization and activation, heat treatment at lower temperatures compared to those of the physical method, and removal of extra chemicals from the sorbent pores during the washing steps are the most important characteristics of chemical activation 22–25.…”

Section: Introductionmentioning

confidence: 99%

Conversion of Poly(Ethylene Terephthalate) Waste into Activated Carbon: Chemical Activation and Characterization

et al. 2014

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Due to its high carbon content, low impurities, low cost and easy availability, poly(ethylene terephthalate) (PET) waste is considered as a suitable precursor for the production of activated carbon. The chemical activation of PET wastes using different chemical agents such as H3PO4, H2SO4, ZnCl2, and KOH was investigated. KOH‐ and ZnCl2‐activated PET were found to be the best choices for the adsorption of small and large molecules. The capacities of the adsorbents towards I2, methylene blue, N2, CH4, and CO2 followed the order KOH‐PET >H3PO4‐PET > ZnCl2‐PET > H2SO4‐PET; however, in the molasses uptake and selective adsorption of CO2 compared to CH4, ZnCl2‐PET performed better than the other adsorbents.

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“…This method is often employed to determine carbon yield during pyrolysis of polymeric carbon precursors [5][6][7], including PET [8], and the yield of the process is considered as a ratio of residual mass to initial mass. In another analogous manner, carbon yield is deduced basing on both final weight and original weight of sample subjected to treatment in a reactor [9]. These approaches are commonly accepted and do not evoke any doubts.…”

Section: Introductionmentioning

confidence: 99%

Effect of some thermally unstable magnesium compounds on the yield of char formed from poly(ethylene terephthalate)

Przepiórski

Karolczyk

Tsumura

et al. 2011

J Therm Anal Calorim

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Mixtures of poly(ethylene terephthalate) (PET) with magnesium compounds including carbonate, hydroxide, and oxide, with different weight ratios of the components, were subjected to thermogravimetric measurements up to 850°C in argon atmosphere. For reference, pure components of the examined mixtures were analyzed at the same conditions. During the heating, PET underwent carbonization and magnesium carbonate and hydroxide decomposed to MgO with evolution of gaseous products (CO 2 and/or H 2 O). As found, carbon yields calculated from the residual masses depended on the qualitative and quantitative composition of the starting mixture. Yields of carbon obtained from PET mixed with MgO did not depend on MgO/PET ratio. However, yields of carbon formed through pyrolysis of PET contained in the mixture with either magnesium carbonate or magnesium hydroxide were in general higher and depended on the weight ratio of components in the starting material. Reasons of these inconsistent results are discussed and explained. An influence of gasification of char on the carbon yield is explained.

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Effect of combined activation on the preparation of high porous active carbons from granulated post-consumer polyethyleneterephthalate

Cited by 28 publications

References 6 publications

Polyethylene terephthalate waste‐derived activated carbon for adsorptive desulfurization of dibenzothiophene from model gasoline: Kinetics and isotherms evaluation

Polyethylene terephthalate waste‐derived activated carbon for adsorptive desulfurization of dibenzothiophene from model gasoline: Kinetics and isotherms evaluation

Conversion of Poly(Ethylene Terephthalate) Waste into Activated Carbon: Chemical Activation and Characterization

Effect of some thermally unstable magnesium compounds on the yield of char formed from poly(ethylene terephthalate)

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