Removal of Cu(II) from aqueous solutions using dolomite–palygorskite clay: Performance and mechanisms

Qiu, Gao; Xie, Qiaoqin; Chen, Tianhu; Xie, Jingjing; Li, Hongwei

doi:10.1016/j.clay.2015.09.008

Cited by 52 publications

(13 citation statements)

References 47 publications

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“…Palygorskite as a common clay mineral is a kind of 2:1 layered hydrated magnesium aluminum silicate minerals with two bands of silica tetrahedra linked by magnesium ions in octahedral coordination [22]. Recently, the adsorption of heavy metals on palygorskite has been widely investigated such as Cu(II) [23,24], Pb(II) [25][26][27][28], Cd(II) [29][30][31] and Hg(II) [32]. However, few studies on the adsorption of radionuclides on palygorskite are available [33][34][35].…”

Section: Introductionmentioning

confidence: 99%

Kinetics and thermodynamics of Eu(III) and U(VI) adsorption onto palygorskite

Zhu

Chen

et al. 2016

Journal of Molecular Liquids

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Section: Introductionmentioning

confidence: 99%

Kinetics and thermodynamics of Eu(III) and U(VI) adsorption onto palygorskite

Zhu

Chen

et al. 2016

Journal of Molecular Liquids

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“…(4). 31,36 The Temkin isotherm takes into consideration the influences of some indirect interactions between adsorbent and adsorbate. The model assumes that the relationship between the decrease in adsorption heat and temperature is linear rather than logarithmic, and is affected by the surface coverage.…”

Section: Isothermal Analysis and Kinetic Studiesmentioning

confidence: 99%

“…(1): (1) where q is the removal capacity of the adsorbent at equilibrium (mg/g), V is the volume of the suspension (mL), m is the weight of adsorbents (in gms), C i and C f are the initial and final concentrations of Cr (III) (in mg/L), respectively. 31 For thermodynamic studies, experiments were carried out at various adsorption temperatures (20 °C, 30 °C, 40 °C and 50 °C) and equilibrium adsorption parameters.…”

Section: Adsorption Experimentsmentioning

confidence: 99%

Adsorption of Cr(III) from Aqueous Solution using Borax Sludge

Şenberber¹,

Yıldırım²,

Mermer³

et al. 2017

ACSi

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Borax sludge is the waste produced by a trommel sieve in the borax production process and is used as an adsorbent for Cr(III) removal. The effects of various parameters, including pH, initial Cr(III) concentration and contact time were investigated for batch adsorption of Cr(III). The experimental results obtained were applied to different adsorption isotherms and kinetic models. The results indicated that the Temkin isotherm (R 2 = 0.9749) was most suitable to explain the adsorption characteristics of borax sludge, and the removal of Cr(III) was achieved by a physisorption process. The overall kinetic data fitted the pseudo-second order rate model (R 2 = 0.9990). According to thermodynamic studies, which were carried out at different temperatures, changes in enthalpy (ΔH) and entropy (ΔS) values for Cr(III) adsorption by borax sludge were determined to be 69.395 kJ/mol and 0.276 kJ/mol K, respectively. The study implied that borax sludge could be used as an alternative adsorbent in the adsorption of Cr(III) from aqueous solutions.

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“…Adsorption is one of the most commonly applied methods since the material is easy to obtain, low cost, effectively reducing pollutants to low concentrations and enabling regeneration and reuse. 5 Adsorption is a phenomenon whereby a substance attaches on another substance surfaces. The amount of at least adsorbed substance depends on the surface area of the adsorbent and its active groups.…”

Section: Introductionmentioning

confidence: 99%

"Application of Bekonang Clay and Andisol Soil Composites as Copper (Ii) Metal Ion Adsorbent in Metal Crafts Wastewater "

2018

RJC

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The utilization of bekonang clay and andisol soil composite as the adsorbent of Cu (II) metal ion has been studied. The aims of this study were to determine the optimum conditions of adsorption including pH of the copper solution, adsorbent calcination temperature, composite composition, adsorbent contact time, and their adsorption capacity in metal craft wastewater. Bekonang clay was activated with 1.5M H2SO4 and andisol soil with 3M NaOH. Experiment of adsorption on Cu(II) metal ion was performed at pH solution of 1, 2, 3, 4, 5, 6, 7, and 8, calcination temperature of 100, 200, 300 and 400 °C, variation of composition bekonang clay and andisol soil composite of 100:0, 25:75, 50:50, 75:25, and 0:100 (w/w) and contact time of 15, 30, 60, and 90 minutes in the batch system. Measurement of final concentration at equilibrium was conducted using AAS. The optimum condition of copper(II) metal ion adsorption was obtained at pH 6, calcination temperature 400 °C, bekonang clay and andisol soil composition 25:75 (w/w), contact time 30 minutes with adsorption capacity by 0.37 mg/g. Adsorption isotherm followed Langmuir and Freundlich isotherm. Adsorbent adsorption capacity in the metal crafts wastewater was 17.38 mg/g.

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Removal of Cu(II) from aqueous solutions using dolomite–palygorskite clay: Performance and mechanisms

Cited by 52 publications

References 47 publications

Kinetics and thermodynamics of Eu(III) and U(VI) adsorption onto palygorskite

Kinetics and thermodynamics of Eu(III) and U(VI) adsorption onto palygorskite

Adsorption of Cr(III) from Aqueous Solution using Borax Sludge

"Application of Bekonang Clay and Andisol Soil Composites as Copper (Ii) Metal Ion Adsorbent in Metal Crafts Wastewater "

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