Studies of adsorption equilibria and kinetics in the systems: Aqueous solution of dyes–mesoporous carbons

Deryło–Marczewska, Anna; Marczewski, Adam W.; Winter, Sz.; Sternik, Dariusz

doi:10.1016/j.apsusc.2009.12.085

Cited by 65 publications

(63 citation statements)

References 20 publications

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“…Linear fits were omitted for the sake of clarity the choice of the form of PSOE can influence both the quality of the obtained fits and the values of adjusted coefficients. For instance, such observation was made by Derylo-Marczewska et al (2010) who compared the applicability of ''classical'' (Eq. (10)) and ''alternative'' PSOE linear plots for description of the sorption kinetics of dyes on mesoporous carbons.…”

Section: Resultsmentioning

confidence: 99%

Modeling of sorption kinetics: the pseudo-second order equation and the sorbate intraparticle diffusivity

Dziuba²,

2013

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The applicability of the pseudo-second order equation (PSOE) has been explained on the ground of the model assuming that the overall sorption rate is limited by the rate of sorbate diffusion in the pores of sorbent (intraparticle diffusion model). Mathematical expressions have been proposed in order to describe the dependence of the pseudo-second order constant on such parameters as the initial sorbate concentration, the progress of the sorption process and the solid/solution ratio. Further, it has been shown that equilibrium sorption capacities estimated by using PSOE may be much lower than the actual ones: it depends mainly on how the sorption system is close to equilibrium. The values of parameters applied in calculations were taken from the literature and correspond to the biosorption systems designed to remove the heavy metals from the aqueous solution.

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Section: Resultsmentioning

confidence: 99%

Modeling of sorption kinetics: the pseudo-second order equation and the sorbate intraparticle diffusivity

Dziuba²,

2013

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“…Adsorption methods are considered to be highly effective in the industrial effluents treatment technologies. Currently, the most important adsorbents used for this purpose are: activated carbons (Deryło-Marczewska et al 2010;Bazan-Woźniak et al 2017 and carbonaceous sorbents (Nowicki et al 2016), anion exchange resins (Wawrzkiewicz et al 2017c), hybrid materials (Wawrzkiewicz et al 2017a), low-cost substances (Janoš and Šmidová 2005), and agroindustry wastes (Garg et al 2004). The search for not only cheap but also selective adsorbents with a significant sorption capacity is a serious challenge for scientists.…”

Section: Introductionmentioning

confidence: 99%

Nanosized silica–titanium oxide as a potential adsorbent for C.I. Acid Yellow 219 dye removal from textile baths and wastewaters

et al. 2018

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The mixed SiO 2 -TiO 2 oxide obtained by the pyrogenic method with the silica:titanium percentage ratio equal to 80:20 (ST20) was used as a potential adsorbent for the removal of hazardous azo dye C.I. Acid Yellow 219 (AY219) from aqueous solutions. Based on the values of determination coefficients (r 2 ), it can be stated that the Freundlich (r 2 = 0.929) model fitted the experimental data better than the Langmuir (r 2 = 0.920) and Tempkin (r 2 = 0.848) ones. In the system containing 20 mg/L AY219, the amount of dye adsorbed (q t ) by ST20 was equal to 9.7 mg/g and the time necessary to reach equilibrium was 120 min. The sorption of AY219 on ST20 may be described by the pseudo-second-order model (r 2 = 0.999) as the adsorption capacity was calculated as 9.69 mg/g. The amount of AY219 adsorbed decreased with the increasing concentration of additives such as anionic and non-ionic (Triton X-100) surfactants. In the presence of cationic surfactant, the reverse dependence was observed. Anionic dye additions influence the structure of electrical double layer formed on the surface of mixed oxide particles. The presence of negative charges in adsorbed AY219 molecules results in increase of the solid surface charge density with simultaneous decrease of the zeta potential of ST20 particles. The addition of surfactants with different ionic character causes formation of complexes whose presence at the mixed oxide-liquid interface influences considerably both the solid surface charge density and the zeta potential of ST20 particles dispersed in aqueous solution.

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“…The high surface area and the surface chemistry of the ACs allow them to be used in a wide variety of industrial applications, some of the most important dealing with the environmental field and, particularly, with water treatment [1,23,24]. Adsorption with AC is most commonly oriented toward the removal of species which are recognized as toxic pollutants.…”

Section: Introductionmentioning

confidence: 99%

Activated carbon from grape seeds upon chemical activation with phosphoric acid: Application to the adsorption of diuron from water

Bahri

Calvo

Gilarranz

et al. 2012

Chemical Engineering Journal

175

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Studies of adsorption equilibria and kinetics in the systems: Aqueous solution of dyes–mesoporous carbons

Cited by 65 publications

References 20 publications

Modeling of sorption kinetics: the pseudo-second order equation and the sorbate intraparticle diffusivity

Modeling of sorption kinetics: the pseudo-second order equation and the sorbate intraparticle diffusivity

Nanosized silica–titanium oxide as a potential adsorbent for C.I. Acid Yellow 219 dye removal from textile baths and wastewaters

Activated carbon from grape seeds upon chemical activation with phosphoric acid: Application to the adsorption of diuron from water

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