Adsorption of Co(II) and Ni(II) by EDTA- and/or DTPA-modified chitosan: Kinetic and equilibrium modeling

Repo, Eveliina; Warchoł, J.; Kurniawan, Tonni Agustiono; Sillanpää, Mika

doi:10.1016/j.cej.2010.04.030

Cited by 408 publications

(194 citation statements)

References 42 publications

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“…Therefore the pseudo-second order kinetic model is better for describing the sorption kinetics of the analyzed heavy metals. Our data were also consistent with other literature data (Corrigan and Koble, 1952;Ho and McKay, 1999;Kousalya et al, 2010;Repo et al, 2010;Runping et al, 2006). Furthermore, it is known that when the pseudo-second order kinetic model shows the best fitting to the experimental data, the sorption mechanism involves chemisorption (Wang et al, 2012).…”

Section: Effect Of Contact Timesupporting

confidence: 81%

“…The Redlich-Peterson isotherm equation is given by (Repo et al, 2010): Koble-Corrigan equilibrium model is also a three-parameter empirical model which is also another combination of the Langmuir and Freundlich isotherm equations. Koble-Corrigan equilibrium model is given by (Han et al, 2005): Toth proposed an equilibrium model which is expressed in the following form (Lodeiro et al, 2005): (14)) and Toth (Eq.…”

Section: Sorption Isotherm Determination For One-component Systemsmentioning

confidence: 99%

“…In order to investigate the sorption mechanism, rate constants of sorption kinetics have to be determined. The pseudo-first order kinetic model can be presented in a linear form (Repo et al, 2010):…”

Section: Effect Of Contact Timementioning

confidence: 99%

“…Langmuir-Freundlich isotherm equation is a modification of the Langmuir and Freundlich equilibrium models providing a common isotherm equation called Langmuir-Freundlich (Chen, 2013;Wang et al, 2012;Hamdaoui and Naffrechoux, 2007;Kousalya et al, 2010;Onsosyen and Skaugrud 1990;Oyrton et al, 1999;Repo et al, 2010;Rinaudo, 2006;Wang et al, 2004):…”

Section: Sorption Isotherm Determination For One-component Systemsmentioning

confidence: 99%

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Equilibrium modeling of mono and binary sorption of Cu(II) and Zn(II) onto chitosan gel beads

Nastaj

Tuligłowicz

Witkiewicz

2016

Chemical and Process Engineering

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The objective of the work are in-depth experimental studies of Cu(II) and Zn(II) ion removal on chitosan gel beads from both one-and two-component water solutions at the temperature of 303 K. The optimal process conditions such as: pH value, dose of sorbent and contact time were determined. Based on the optimal process conditions, equilibrium and kinetic studies were carried out. The maximum sorption capacities equaled: 191.25 mg/g and 142.88 mg/g for Cu(II) and Zn(II) ions respectively, when the sorbent dose was 10 g/L and the pH of a solution was 5.0 for both heavy metal ions. One-component sorption equilibrium data were successfully presented for six of the most useful three-parameter equilibrium models: Langmuir-Freundlich, Redlich-Peterson, Sips, Koble-Corrigan, Hill and Toth. Extended forms of Langmuir-Freundlich, Koble-Corrigan and Sips models were also well fitted to the two-component equilibrium data obtained for different ratios of concentrations of Cu(II) and Zn(II) ions (1:1, 1:2, 2:1). Experimental sorption data were described by two kinetic models of the pseudo-first and pseudo-second order. Furthermore, an attempt to explain the mechanisms of the divalent metal ion sorption process on chitosan gel beads was undertaken.

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Section: Effect Of Contact Timesupporting

confidence: 81%

Section: Sorption Isotherm Determination For One-component Systemsmentioning

confidence: 99%

Section: Effect Of Contact Timementioning

confidence: 99%

Section: Sorption Isotherm Determination For One-component Systemsmentioning

confidence: 99%

See 2 more Smart Citations

Equilibrium modeling of mono and binary sorption of Cu(II) and Zn(II) onto chitosan gel beads

Nastaj

Tuligłowicz

Witkiewicz

2016

Chemical and Process Engineering

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“…This underground water is being polluted by the wastewater containing a large number of contaminants like acids, bases, toxic organics, inorganics, heavy metals (Repo et al 2010), dissolved solids and colors disposed by leather and textile industries. Out of all such contaminants, color is the most visible pollutant and the presence of very minute quantity makes it undesirable for use.…”

Section: Introductionmentioning

confidence: 99%

Adsorption isotherms, kinetics and mechanism for the adsorption of cationic and anionic dyes onto carbonaceous particles prepared from Juglans regia shell biomass

Nethaji

Sivasamy

Mandal

2012

Int. J. Environ. Sci. Technol.

333

177

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In the present study, Juglans regia shells were used to prepare activated carbon by acid treatment method. J. regia shell-based activated carbon was used for the adsorption of two synthetic dyes namely, a basic dye malachite green and an acid dye amido black 10B. The prepared adsorbent was crushed and sieved to three different mesh sizes 100, 600 and 1,000 lm. The adsorbent was characterized by scanning electron microscopy, surface acidity and zero-point charge. Batch experiments were carried out by varying the parameters like initial aqueous phase pH, adsorbent dosage and initial dye concentration. The equilibrium data were tested with Langmuir, Freundlich, Redlich-Peterson and Sips isotherm at three different temperatures 293, 300 and 313 K and it was found that the Freundlich isotherm best fitted the adsorption of both the dyes. Kinetic data were tested with pseudo first-order model and pseudo second-order model. The mechanism for the adsorption of both the dyes onto the adsorbent was studied by fitting the kinetic data with intraparticle diffusion model and Boyd plot. External mass transfer was found to be the rate-determining step. Based on the ionic nature of the adsorbates, the extent of film diffusion and intraparticle diffusion varied; both being system specific. Thermodynamic parameters were also calculated. Finally, the process parameters of each adsorption system were compared to develop the understanding of the best suitable system.

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Applications of Chitosan Derivatives in Wastewater Treatment

Rashid

Islam

Sharmeen

et al. 2017

Handbook of Composites From Renewable Materials

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Adsorption of Co(II) and Ni(II) by EDTA- and/or DTPA-modified chitosan: Kinetic and equilibrium modeling

Cited by 408 publications

References 42 publications

Equilibrium modeling of mono and binary sorption of Cu(II) and Zn(II) onto chitosan gel beads

Equilibrium modeling of mono and binary sorption of Cu(II) and Zn(II) onto chitosan gel beads

Adsorption isotherms, kinetics and mechanism for the adsorption of cationic and anionic dyes onto carbonaceous particles prepared from Juglans regia shell biomass

Applications of Chitosan Derivatives in Wastewater Treatment

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