adsorption of cobalt from aqueous solutions onto sepiolite
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adsorption of cobalt from aqueous solutions onto sepiolite

Adsorption of cobalt from aqueous solutions onto sepiolite ...

Jan 01, 2003  Abstract. Adsorption of Co (II) ions from aqueous sepiolite suspensions has been systematically investigated as a function of several variables including activation conditions, solid to liquid ratio, pH and temperature. The results are analyzed to identify the mechanism of cobalt uptake by sepiolite.

Adsorption of cobalt from aqueous solutions onto sepiolite ...

Adsorption of Co(II) ions from aqueous sepiolite suspensions has been systematically investigated as a function of several variables including activation conditions, solid to liquid ratio, pH and temperature. The results are analyzed to identify the mechanism of cobalt uptake by sepiolite.

Adsorption of Cobalt from Aqueous Solutions onto Sepiolite ...

Request PDF Adsorption of Cobalt from Aqueous Solutions onto Sepiolite Adsorption of Co(II) ions from aqueous sepiolite suspensions has been systematically investigated as a function of ...

Adsorption of cobalt from aqueous solutions onto sepiolite

Effect of contact timeThe adsorption of Co (II) onto natural sepiolite is presented in Fig. 7 as a function of contact time from 5 min to 24 h. More than 90% of Co (II) adsorbs in about 5 min followed by a constant adsorption upon further increasing the contact time.

Adsorption of cobalt from aqueous solutions onto sepiolite

Adsorption of Co (II) ions from aqueous sepiolite suspensions has been systematically investigated as a function of several variables including activation conditions, solid to liquid ratio, pH and temperature. The results are analyzed to identify the

Adsorption of Cobalt(II) Ions from Aqueous Solution onto ...

951 Adsorption of Cobalt(II) Ions from Aqueous Solution onto Activated Carbon Prepared from Hazelnut Shells Erhan Demirbas¸ * Department of Chemistry, Gebze Institute of Technology, P.O. Box 141, Gebze 41400, Turkey. (Received 21 April 2003; revised form accepted 22 August 2003)

Adsorption of cobalt from aqueous solutions onto Bark of ...

Adsorption and desorption procedures The extraction experiments were realized by adding the given quantity of adsorbent with 100 mL of aqueous solution with known cobalt ion concentration in a 250 mL beaker. The pH of the solutions was adjusted by adding negligible volumes of 0.1 or 0.01 M HNO 3 or NaOH. The flask was

Adsorption of cobalt(II) from aqueous solution onto ...

Adsorption of cobalt(II) from aqueous solution onto hydroxyapatite/zeolite composite Neha Gupta, Atul K. Kushwaha and M.C. Chattopadhyaya * Environmental Chemistry Research Laboratory, Department of Chemistry, University of Allahabad, Allahabad, 211002, India

Adsorption of cobalt from aqueous solutions onto Bark of ...

Adsorption and desorption procedures The extraction experiments were realized by adding the given quantity of adsorbent with 100 mL of aqueous solution with known cobalt ion concentration in a 250 mL beaker. The pH of the solutions was adjusted by adding negligible volumes of 0.1 or 0.01 M HNO 3 or NaOH. The flask was

Adsorption of cobalt(II) from aqueous solution onto ...

Adsorption of cobalt(II) from aqueous solution onto hydroxyapatite/zeolite composite Neha Gupta, Atul K. Kushwaha and M.C. Chattopadhyaya * Environmental Chemistry Research Laboratory, Department of Chemistry, University of Allahabad, Allahabad, 211002, India

Adsorption of cobalt from aqueous solutions onto Bark of ...

- R. Ertaş, N. Öztürk. Removal of Cr (VI) from aqueous solution onto chestnut shell: application of full factorial design and. equilibrium studies. Desalination Water Treat. 2013, 51 (13–15), 2909–2914 - C. Caramalău, l Bulgariu, m Macoveanu. Cobalt (II) Removal from Aqueous Solutions by Adsorption on Modified Peat Moss. Chem. Bull.

Adsorption of Acid Dyes from Aqueous Solutions onto Sepiolite

In addition, the effectiveness of sepiolite on adsorption of AR57 and AB294 from aqueous solution was studied as a function of time, pH, and temperature. Thermodynamic parameters for the adsorption of dyes were calculated and are discussed. The maximum removals of acid dyes was observed around 90% and 75% at pH = 2 for AR57 and AB294, respectively.

Adsorption of Acid Dyes from Aqueous Solutions onto Sepiolite

The adsorption of Basic Red 18 (BR 18) from aqueous solution onto KF modified sepiolite was carried out as a function of pH, initial dye concentration, contact time and temperature.

Efficient adsorption of cobalt on chemical modified ...

S. Hashemian, H. Saffari, S. Ragabion, Adsorption of cobalt (II) from aqueous solutions by Fe 3 O 4 /bentonite nanocomposite, Water Air Soil Pollut., 226 (2015) 1–10. M.M. Hamed, M. Aly, A. Nayl, Kinetics and thermodynamics studies of cobalt, strontium and caesium sorption on marble from aqueous solution, Chemistry Ecol., (2015) 1–18.

Adsorption of Pyrene from Aqueous Solutions onto Sepiolite ...

A sepiolite of Turkish origin was then investigated to explore its potential to adsorb hydrophobic organic compounds from aqueous solution. The microstructure and morphology of the sepiolite were characterized using elemental analysis, X-ray diffractometry (XRD), Fourier-transform infrared (FTIR) spectroscopy, field emission scanning electron ...

Adsorption of pyrene from aqueous solutions onto sepiolite ...

adshelp[at]cfa.harvard The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative Agreement NNX16AC86A

Adsorption of pyrene from aqueous solutions onto sepiolite ...

A sepiolite of Turkish origin was then investigated to explore its potential to adsorb hydrophobic organic compounds from aqueous solution. The microstructure and morphology of the sepiolite were characterized using elemental analysis, X-ray diffractometry (XRD), Fourier-transform infrared (FTIR) spectroscopy, field emission scanning electron ...

Adsorption of pyrene from aqueous solutions onto sepiolite ...

Saba, E and Ouki, Sabeha (2017) Adsorption of pyrene from aqueous solutions onto sepiolite Clays and Clay Minerals, 65 (1). pp. 14-26.

ADSORPTION OF PYRENE FROM AQUEOUS SOLUTIONS ONTO SEPIOLITE ...

Polycyclic aromatic hydrocarbons (PAHs) are a large class of organic compounds which are commonly mentioned and have been shown to be highly carcinogenic and to persist in the env

Adsorption of copper from aqueous solution onto natural ...

The adsorptive properties of natural sepiolite in the removal of copper (Cu 2+) from aqueous solution were investigated.The results show that the amount of adsorption of copper ion increases with initial copper concentration, contact time, and solution pH.

Contribution of cobalt ion precipitation to adsorption in ...

Contribution of metal ion precipitation to the adsorption of Co2+ ions from aqueous solutions onto sepiolite has been analyzed as a function of pH. Abstraction and precipitation isotherms are constructed to isolate the precipitation of cobalt from the real adsorption. The contribution of all cobalt ...

Kinetics and Thermodynamics of Lead Adsorption from ...

Sepiolite and zeolite yield adsorption capacities (Q e) was found to be 30.5 and 24.4 mg/g for lead ions, respectively. The results also showed that the adsorption of lead metal ions onto sepiolite and zeolite minerals increased with contact time, solution pH, and the amount of adsorbent; but decreased as the temperature of the system increased.

Adsorption of cobalt(II) from aqueous solution onto ...

Adsorption of cobalt(II) from aqueous solution onto hydroxyapatite/zeolite composite Neha Gupta, Atul K. Kushwaha and M.C. Chattopadhyaya * Environmental Chemistry Research Laboratory, Department of Chemistry, University of Allahabad, Allahabad, 211002, India

Adsorption of Cobalt(II) from Aqueous Solutions by Fe3O4 ...

Dec 07, 2014  Separ Science Technology, Akcay, M. (2004). Characterization and determination of the ther- 42(12), 2768–2786. modynamic and kinetic properties of p-CP adsorption onto Kara, M., Yuzer, H., Sabah, E., CelikM, S. (2003). Adsorption organophilic bentonite from aqueous solutions. Journal of of cobalt from aqueous solutions onto sepiolite.

Efficient adsorption of cobalt on chemical modified ...

S. Hashemian, H. Saffari, S. Ragabion, Adsorption of cobalt (II) from aqueous solutions by Fe 3 O 4 /bentonite nanocomposite, Water Air Soil Pollut., 226 (2015) 1–10. M.M. Hamed, M. Aly, A. Nayl, Kinetics and thermodynamics studies of cobalt, strontium and caesium sorption on marble from aqueous solution, Chemistry Ecol., (2015) 1–18.

Sepiolite functionalized with N-[3-(trimethoxysilyl)propyl ...

200 LAZAREVIĆ et al. sepiolite were 5.6±0.1 for 0.01 mol dm–3 and 5.8±0.1 for 0.001 mol dm–3 Ni(NO3)2.The pHpzc was also lower compared with values obtained for natural sepiolite in Ni2+ solutions (6.5±0.1 for 0.01 mol dm–3 and 6.8±0.1 for 0.01 mol dm–3 Ni(NO3)2)12 due to the presence of additional groups originating from the modifier located on the external sites of the sepiolite ...

Adsorption of pyrene from aqueous solutions onto sepiolite ...

adshelp[at]cfa.harvard The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative Agreement NNX16AC86A

ADSORPTION OF PYRENE FROM AQUEOUS SOLUTIONS ONTO SEPIOLITE ...

Polycyclic aromatic hydrocarbons (PAHs) are a large class of organic compounds which are commonly mentioned and have been shown to be highly carcinogenic and to persist in the env

sepiolite, 63800-37-3

PubMed:Sorption and preconcentration of some trace metals on sepiolite. PubMed:Adsorption of cobalt from aqueous solutions onto sepiolite. PubMed:Adsorption mechanism of cationic surfactants onto acid- and heat-activated sepiolites. PubMed:Comprehensive study on dioxin contents in binder and anti-caking agent feed additives.

Investigation of Kinetics and Isotherm Models for the Acid ...

Adsorption of Acid Orange 95 (AO 95) from aqueous solution onto natural bentonite, zeolite, and sepiolite was studied, and the effects of the parameters like pH, contact time, temperature, and concentration of dye were investigated. The AO 95 adsorption onto bentonite, sepiolite, and zeolite was favorable at pH 1.5. It was found that temperature does not affect the adsorbed amount of dye ...

Adsorption of pyrene from aqueous solutions onto sepiolite ...

Saba, E and Ouki, Sabeha (2017) Adsorption of pyrene from aqueous solutions onto sepiolite Clays and Clay Minerals, 65 (1). pp. 14-26.

Adsorption Technique for the Removal of Organic Pollutants ...

Jun 28, 2012  The batch adsorption of the organic pollutants onto (10 g/L) aluminosilica monoliths was performed in an aqueous solution at various temperatures. These adsorbents exhibit efficient removal of organic pollutants (e.g., aniline, pchloroaniline,o-aminophenol, and p-nitroaniline) of up to 90% within a short period (in the order of minutes).

Adsorption of Acid Blue 193 from aqueous solutions onto ...

The adsorption of Acid Blue 193 (AB193) onto dodecylethyldimethylammonium (DEDMA)-sepiolite was investigated in aqueous solution in a batch system with respect to contact time, pH and temperature. The surface modification of DEDMA-sepiolite was examined by the FT-IR technique.

Kinetics and Thermodynamics of Lead Adsorption from ...

A good understanding of adsorption equilibrium and thermodynamics is required to design and operate an adsorption process. This study was conducted to assess the adsorption percentage of Pb2+ ions as a function of contact time, solution pH and temperatures, and adsorbent dosage through a series of batch experiments. The methods including zeta potentials, specific surface area measurements and ...

Kinetics, isotherm and thermodynamic studies of adsorption ...

In the present study, natural sepiolite was used as an adsorbent for the investigation of the adsorption kinetics, isotherms and thermodynamic parameters of an acid dye (Acid Blue 193, AB193) from aqueous solution at various pHs, temperatures and concentrations. Two simplified kinetic models, first-order and pseudo-second-order, were used to predict the adsorption rate constants.

Sepiolite Article about Sepiolite by The Free Dictionary

Adsorption of cobalt from aqueous solutions onto sepiolite. WaterResearch, 37: 224-232. WaterResearch, 37: 224-232. Adsorption performance of modified Nkalagu bentonite in dye removal: kinetics, equilibrium, thermodynamics and structural properties of the modified samples

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