Comparison of physicochemical and sorption properties of activated carbons prepared by physical and chemical activation of cherry stones

Nowicki, Piotr; Kaźmierczak, Justyna; Pietrzak, Robert

doi:10.1016/j.powtec.2014.09.023

Cited by 139 publications

(55 citation statements)

References 47 publications

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“…Of great variety of techniques; plasma modification (Kuraica et al 2003;Punga and Borcia 2013), adsorption of different low-and high-molecular compounds (Chibowski et al 2010;Nosal-Wiercińska 2012, 2013Wiśniewska et al 2013a;Nosal-Wiercińska 2014) and synthesis of mixed oxides (Maliyekkal et al 2006;Wu et al 2010) acquired the most significant importance. Appropriate modification leads to obtaining solids of the properties desired in various ecological and technological processes (Kaźmierczak et al 2013;Nowicki et al 2014Nowicki et al , 2015a.…”

Section: Introductionmentioning

confidence: 99%

Impact of poly(vinyl alcohol) adsorption on the surface characteristics of mixed oxide Mn x O y –SiO2

et al. 2015

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The poly(vinyl alcohol) (PVA) influence on the adsorption and electrokinetic properties of the mixed oxide Mn x O y -SiO 2 /polymer solution system was examined. Three oxides differing with the Mn x O y contents were applied (0.2; 1 and 3 mmol/g SiO 2 , respectively). The PVA with the molecular weight 100 kDa was characterized with the acetate groups content equal to 14 %. Adsorption, solid surface charge and zeta potential measurements were made as a function of solution pH (3-10). The obtained results showed that the PVA adsorption amount strongly depends on not only the solution pH, but also manganese oxide content on the mixed oxide surface. The higher solution pH value (or Mn x O y content) is, the higher polymer adsorption is obtained. The PVA addition to the solid suspension causes minimal changes of the mixed oxide surface charge density, whereas the zeta potential of solid particles increases significantly in the polymer presence.

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Section: Introductionmentioning

confidence: 99%

Impact of poly(vinyl alcohol) adsorption on the surface characteristics of mixed oxide Mn x O y –SiO2

et al. 2015

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“…From among the various materials used for this purpose (Goscianska et al 2013;Wiśniewska et al 2007Wiśniewska et al , 2013Wiśniewska et al , 2014Kierys et al 2013;Wiśniewska 2010Wiśniewska , 2012Krysztafkiewicz et al 2002;Thomas and Syres 2012;De Smedt et al 2015;Qian et al 2015) the most popular and promising are the carbonaceous sorbents, especially activated carbons (Jiang et al 2015;Deng et al 2015;Sharma and Upadhyay 2009;Goscianska and Pietrzak 2015;Jiang and Chen 2011). Such materials could be prepared in a simple way by physical or chemical activation of variety of organic substances, including wood (Wang et al 2009;Nowicki et al 2015a), peat (Khadiran et al 2015), fossil coals (Nowicki and Pietrzak 2011;Maroto-Valer et al 2005;Teng et al 1998) as well as many biodegradable (Karagöz et al 2008;Soleimani and Kaghazchi 2008;Kazmierczak et al 2013Kazmierczak et al , 2015Nowicki et al 2015b) and industrial waste (Nakagawa et al 2003;Hofman and Pietrzak 2011;Nowicki et al 2013;Lin and Teng 2002). Taking into account economic and ecological aspects, particularly suited for this purpose are fossil coals of low quality, the use of which in a chemical industry (e.g.…”

Section: Introductionmentioning

confidence: 99%

The effect of mineral matter on the physicochemical and sorption properties of brown coal-based activated carbons

Nowicki

2015

Adsorption

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A series of new carbonaceous adsorbents has been obtained by means of direct and physical activation of Polish brown coal, characterised by high mineral matter content. The influence of activation procedure on the porous structure development, acidic and basic surface groups generation as well as the sorptive properties of the adsorbents prepared toward liquid and gas pollutants was tested. Additionally the effect of mineral matter presence on the physicochemical and sorption properties of materials prepared was studied. The final products were micro/mesoporous activated carbons of medium developed surface area ranging from 407 to 674 m 2 /g, showing strongly basic or intermediate acidic-basic character of the surface. The results obtained during this study showed that direct and physical activation of low quality brown coal led to activated carbons with very good sorption capacity both toward gas contamination of acidic character (especially nitrogen dioxide) as well as toward methylene blue and inorganic pollutants of molecules of size similar to that of iodine molecules. It was also proved that demineralization of prepared activated carbons by hydrochloric acid significantly reduced their ability to toxic gases sorption, but simultaneously increased the efficiency of removing impurities from the liquid phase.

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“…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%

“…There two ways of getting AC that are known today: chemical [1, 4-6, 10-13, 15, 16, 19, 21-23, 26-28] and physical activation [1,10,15,17,21]. Benefits of chemical activation are one-step process; low activation temperature; short activation time; large yield; high surface; welldeveloped controlled microporosity [28].…”

Section: Introductionmentioning

confidence: 99%

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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Comparison of physicochemical and sorption properties of activated carbons prepared by physical and chemical activation of cherry stones

Cited by 139 publications

References 47 publications

Impact of poly(vinyl alcohol) adsorption on the surface characteristics of mixed oxide Mn x O y –SiO2

Impact of poly(vinyl alcohol) adsorption on the surface characteristics of mixed oxide Mn x O y –SiO2

The effect of mineral matter on the physicochemical and sorption properties of brown coal-based activated carbons

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

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