Numerical analysis of the influence of the impregnation ratio on the microporous structure formation of activated carbons, prepared by chemical activation of waste biomass with phosphoric(V) acid

Kwiatkowski, Mirosław; Kalderis, Dimitrios; Diamadopoulos, Evan

doi:10.1016/j.jpcs.2017.02.006

Cited by 31 publications

(39 citation statements)

References 31 publications

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“…Benefits of chemical activation are: one-step process; low activation temperature; short activation time; large output; developed surface; controlled microporosity is well developed [26]. The chemical activation involves usage of activating agent (ZnCl 2 [4], H 3 PO 4 [2,3,9,12,16], NaOH [26], KOH [24,26], et al), administered by impregnation, followed by carbonization of raw materials in the atmosphere or inert gases and activation [27]. This method of receiving of PCM (Pat.…”

Section: Figure 1 Pcm Receiving Characteristicsmentioning

confidence: 99%

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Substantiation of the conditions of obtaining porous carbon materials from pyrolyzed wood wastes by chemical activation of H3PO4

Kuzmin¹,

Shendrik²,

Zubkova³

2017

Ukr. food j.

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Introduction. The purpose of this publication is to search for alternative materials -food industry wastes; valuation of it's use in the production of porous carbon materials (PCM) for use in water treatment systems.Materials and methods. Pyrolyzed wood waste (PWW) of the meat processing industry as raw material for the production of sorbents. Chemical activation of PWW by orthophosphoric acid. Using the adsorption-desorption methods of nitrogen, the porous structure was determined at 77 K; mesopore distribution by size and mesopore's volume -by BJH-method; distribution of micropores by size -using QSDFT-method; volume of micropores -by Dubinin-Radushkevich method; subnanopor's volume -by QSDFT-method.Results and discussion. The microporous structure has the following characteristics: pore diameters are in the range of D mi =0,60-2,5 nm, mostly represented by pores with a diameter of 0,87; 1,56 nm; volume of micropores -V mi =0,091 cm Conclusion. An energy-saving method is proposed for the production of PCM from secondary «renewable» resources -PWW, for use in water treatment systems. ─── Food Technology─── ───

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Section: Figure 1 Pcm Receiving Characteristicsmentioning

confidence: 99%

“…The PCM is made of materials that forms a solid carbon residue [1][2][3][4][5][6][7][8]. These matherials areas follows: wood -36%, coal -28%, brown coal -14%, peat -10% coconut shell -10% organic materials and waste -2% (Figure 1) [1].…”

Section: Introductionmentioning

confidence: 99%

Substantiation of the conditions of obtaining porous carbon materials from pyrolyzed wood wastes by chemical activation of H3PO4

Kuzmin¹,

Shendrik²,

Zubkova³

2017

Ukr. food j.

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“…This kind of raw material has a gigantic range of precursors (natural coal, peat, wood, carbonaceous wastes of various origins, etc.) [1][2][3][4][5][6][7][8][9][10][11][12]. Therefore, there is an urgent need to obtain AC from an alternative material.…”

Section: Introductionmentioning

confidence: 99%

“…The search for these materials could involve existing technologies of food industry. Wastes from these industries can be used to produce the adsorbents [4][5][6][7][8][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

“…Benefits of chemical activation are one-step process; low activation temperature; short activation time; large yield; high surface; welldeveloped controlled microporosity [28]. Chemical activation involves usage of activating agent (ZnCl 2 [4], H 3 PO 4 [9,11,12,16,23,26], NaOH [28], KOH [27,28], et al), entered by impregnation, followed by carbonization of raw materials in the atmosphere of inert gases and activation [1].…”

Section: Introductionmentioning

confidence: 99%

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Production of active coal from pyrolyzed wood wastes by alkaline activation of KOH

Kuzmin¹,

Tamarkina²,

Shendrik³

et al. 2017

Ukr. food j.

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An evaluation of the reliability of the characterization of the porous structure of activated carbons based on incomplete nitrogen adsorption isotherms

Kwiatkowski

Hameed

2017

J Mol Model

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The paper presents the results of research devoted to reliability evaluation of the analysis of results of the porous structure of activated carbons based on incomplete nitrogen adsorption isotherms using the BET, t-plot, and NLDFT methods, as well as the LBET method comprising the unique numerical fast multivariant procedure of adsorption system identification. The research involved the application of the nitrogen adsorption isotherms obtained for five samples of activated carbons produced from waste materials of organic origin by way of chemical activation with potassium hydroxide, sodium hydroxide, and potassium carbonate with the use of microwave heating. The analyses performed pointed to a good correlation between the results obtained using the BET, t-plot, NLDFT, and LBET methods. Moreover, the parameters of the porous structure determined using these methods based on incomplete adsorption isotherms of nitrogen are in fact as reliable as these methods allow.

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Numerical analysis of the influence of the impregnation ratio on the microporous structure formation of activated carbons, prepared by chemical activation of waste biomass with phosphoric(V) acid

Cited by 31 publications

References 31 publications

Substantiation of the conditions of obtaining porous carbon materials from pyrolyzed wood wastes by chemical activation of H3PO4

Substantiation of the conditions of obtaining porous carbon materials from pyrolyzed wood wastes by chemical activation of H3PO4

Production of active coal from pyrolyzed wood wastes by alkaline activation of KOH

An evaluation of the reliability of the characterization of the porous structure of activated carbons based on incomplete nitrogen adsorption isotherms

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