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adsorption of cobalt from aqueous solutions onto sepiolite

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adsorption of cobalt from aqueous solutions onto sepiolite

Jan 01 2003 · Adsorption of cobalt from aqueous solutions onto sepiolite The results are analyzed to identify the mechanism of cobalt uptake by sepiolite Both abstraction and real adsorption isotherms were constructed to isolate the precipitation of cobalt from the real adsorption

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Adsorption of cobaltII ions from aqueous solutions by
Adsorption of cobaltII ions from aqueous solutions by

A study on the removal of cobalt ions from aqueous solutions by palygorskite was conducted under batch conditions The effect of time pH of the dispersion ionic strength temperature and initial

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Adsorption of CobaltII Ions from Aqueous Solution
Adsorption of CobaltII Ions from Aqueous Solution

Adsorption of CobaltII Ions from Aqueous Solution onto Activated Carbon Prepared from Hazelnut Shells Erhan Demirbas¸ Department of Chemistry Gebze Institute of

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Adsorption of CobaltII from Aqueous Solutions by Fe3O4
Adsorption of CobaltII from Aqueous Solutions by Fe3O4

The maximum adsorption capacity of cobaltII by Fe 3 O 4 bentonite nanocomposite was determined to be 1876 mg g −1 The adsorption strongly depends on pH where the removal efficiency increases as the pH turns to alkaline range pH 9

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Sorption of acid red 57 from aqueous solution onto sepiolite
Sorption of acid red 57 from aqueous solution onto sepiolite

The results indicate that acid red 57 adsorption onto sepiolite is spontaneous and physical in nature As a result it can be said that the sepiolite is an effective adsorbent for the removal of acid red 57 from aqueous solution in a commercial system

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Adsorption of cobaltII from aqueous solution onto
Adsorption of cobaltII from aqueous solution onto

cobalt ions from aqueous solution by HApZ 63 than HAp 58 and zeolite 47 Batch experiments were performed to observe the effect of pH adsorbent dose contact time and initial cobalt

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Adsorption kinetics of maxilon blue GRL onto sepiolite
Adsorption kinetics of maxilon blue GRL onto sepiolite

Furthermore adsorption kinetics experiments were carried out to remove the maxilon blue GRL from its aqueous solutions using sepiolite as an adsorbent The remove rate of maxilon blue GRL by sepiolite was studied by varying parameters such as the contact time stirring speed initial dye concentration ionic strength pH and temperature

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Adsorption of Heavy Metal Ions from Aqueous Solution onto
Adsorption of Heavy Metal Ions from Aqueous Solution onto

Adsorption of Heavy Metal Ions from Aqueous Solution onto Sepiolite 573 The chemical composition of the sepiolite sample is listed in T able 1 From the data in Table 1

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Removal of Cobalt II from Aqueous Solutions by
Removal of Cobalt II from Aqueous Solutions by

adsorption of Cobalt II ion onto TPC Cobalt 50 mgL Adsorbent dose 25mg 50ml pH65 Effect of adsorbent dose The results for adsorptive removal of cobalt ions with respect to adsorbent dose are shown in Fig 3 The adsorption of Cobalt ion on adsorbent was studied by varying the carbon concentration from 5 to 25 mg50 ml

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Adsorption of CobaltIII by Graphene and Activated Carbon
Adsorption of CobaltIII by Graphene and Activated Carbon

Adsorption of CoII ions from aqueous sepiolite suspensions has been systematically investigated as a function of several variables including activation conditions solid to liquid ratio pH and

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Adsorption of Acid Dyes from Aqueous Solutions onto Sepiolite
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

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Adsorption of Heavy Metal Ions from Aqueous Solution onto
Adsorption of Heavy Metal Ions from Aqueous Solution onto

The surface charge of sepiolite became less negative when CdII ions were adsorbed onto the sepiolite surface This result indicates that electrostatic interaction between the sepiolite surface and the CdII ions in the aqueous solution played a very important role in determining the adsorption capacity of sepiolite The adsorption of CdII ions onto sepiolite at pH 7 was reversible when desorption was

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Removal of Cobalt II from Aqueous Solutions by
Removal of Cobalt II from Aqueous Solutions by

adsorption of Cobalt II ion onto TPC Cobalt 50 mgL Adsorbent dose 25mg 50ml pH65 Effect of adsorbent dose The results for adsorptive removal of cobalt ions with respect to adsorbent dose are shown in Fig 3 The adsorption of Cobalt ion on adsorbent was studied by varying the carbon concentration from 5 to 25 mg50 ml

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Adsorption of cobaltII from aqueous solution onto
Adsorption of cobaltII from aqueous solution onto

cobalt ions from aqueous solution by HApZ 63 than HAp 58 and zeolite 47 Batch experiments were performed to observe the effect of pH adsorbent dose contact time and initial cobalt II

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Adsorption of pyrene from aqueous solutions onto sepiolite
Adsorption of pyrene from aqueous solutions onto sepiolite

Adsorption of pyrene from aqueous solutions onto sepiolite The full text article is not available for purchase The publisher only permits individual articles to be downloaded by subscribers

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

Adsorption of cobalt from aqueous solutions onto Bark of Eucalyptus In this work we used the bark of eucalyptus grafted with acrylic acid EAA as an adsorbent for removing Co 2 ions from aqueous solutions

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Adsorption of Acid Dyes from Aqueous Solutions onto Sepiolite
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

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Adsorption of Rhodamine B from aqueous solution onto
Adsorption of Rhodamine B from aqueous solution onto

Abstract The sepiolite modified with cetyltrimethylammonium bromide CTABsepiolite was used as an adsorbent for the removal of Rhodamine B RhB from aqueous solutions The sepiolite and modified sepiolite were characterized by Fourier transform infrared spectroscopy BrunauerEmmettTeller and scanning electron microscopy respectively The CTABsepiolite exhibited much higher adsorption

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Adsorption of cobaltII ions from aqueous solutions by
Adsorption of cobaltII ions from aqueous solutions by

The sorbents that take up CoII ions from aqueous solutions most efficiently with the maximal adsorption capacity of up to 043 mmol g−1 can be prepared at maximal rotation rates of the mill

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Adsorption of Pyrene from Aqueous Solutions onto Sepiolite
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 Xray diffractometry XRD Fouriertransform infrared FTIR spectroscopy field emission scanning electron microscopy FESEM and specific surface area from

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Cadmium sorption from aqueous solutions onto Iranian
Cadmium sorption from aqueous solutions onto Iranian

Abstract This work aims to investigate the efficiency of Fariman sepiolite from Iran as an adsorbent to remove Cd from aqueous solutions The effects of different experimental factors such as the initial Cd concentration contact time and the sorbent dose were investigated through a series of batch adsorption

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Adsorption of heavy metal ions from aqueous solution onto
Adsorption of heavy metal ions from aqueous solution onto

The adsorption capacity of sepiolite towards the removal of heavy metal ions from aqueous solution was studied in this work with adsorption equilibrium data being obtained with a bath adsorber The sepiolite sample was chemically stable over the pH range 212 but dissolved in

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Adsorption Mechanism of Organic and Inorganic Ions by a
Adsorption Mechanism of Organic and Inorganic Ions by a

A series of adsorption tests are carried out to understand the ability of cationic surfactants and metal ions to adsorb onto sepiolite Adsorption tests conducted as a function of heat treatment reveal that sepiolite is rather conducive to the uptake of both organic and inorganic ions

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Boron Removal from Aqueous Solutions by Adsorption on
Boron Removal from Aqueous Solutions by Adsorption on

In the present paper boron removal from aqueous solution by adsorption was investigated and 2 3 full factorial design was applied Non activated waste sepiolite NAWS and HCl activated waste sepiolite AWS were used as adsorbents Regression equation formulated for boron adsorption was represented as a function of response variables

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Adsorption Thermodynamics of Cobalt Ions onto
Adsorption Thermodynamics of Cobalt Ions onto

Adsorption Thermodynamics of Cobalt Ions onto Attapulgite HuangShen CHIU and JengJong WANG Health Physics Division Institute of Nuclear Energy Research Atomic Energy Council Taoyuan 32546 Taiwan Abstract The effect of temperature on the equilibrium adsorption of cobalt ions from aqueous solution using Attapulgite was investigated

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Adsorption of CoII from Aqueous Medium on Natural and
Adsorption of CoII from Aqueous Medium on Natural and

Adsorption of cobalt from aqueous solutions onto sepiolite Water Res 37 224 – 232 Crossref PubMed Web of Science Google Scholar have reported that an increase in the surface area of sepiolite upon acid activation followed by calcination could be attributed to the removal of water molecules both formed during acid

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Adsorption of CobaltII Ions from Aqueous Solution onto
Adsorption of CobaltII Ions from Aqueous Solution onto

Activated carbon prepared from hazelnut shells was used to remove CoII from aqueous solution by adsorption Batchmode adsorption experiments were carried out varying parameters such as the initial metal ion concentration 1330–4555 mgl agitation speed 50–200 rpm pH 2–8 temperature 293–323 K and particle size 080–160 mm

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Adsorption of Divalent Cobalt from Aqueous Solution onto
Adsorption of Divalent Cobalt from Aqueous Solution onto

Adsorption of Co II metal ions from aqueous solution on chitosan coated perlite beads is studied under both equilibrium and dynamic conditions In the present investigation a first order reversible rate equation is used to understand the kinetics of metal removal and to calculate the rate constants at different initial concentrations

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Removal of SafraninO from Aqueous Solution by Adsorption
Removal of SafraninO from Aqueous Solution by Adsorption

In this study Natural Raw Kaolinite NRK clay was used as an adsorbent for the investigation of the adsorption kinetics isotherms and thermodynamic parameters of a cationic dye SafranineO also known as Basic Red 2 BR2 from aqueous solution The effects of pH temperature initial dye concentration and contact time on the adsorption capacity were evaluated and the adsorbent was

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Contribution of cobalt ion precipitation to adsorption in
Contribution of cobalt ion precipitation to adsorption in

Adsorption of cobalt ions onto sepiolite before precipitation of cobalt is governed by ion exchange between the released Mg2 ions from sepiolite matrix and those adsorbed Co2 ions this behavior differs from typical oxide titanium dioxide and silicate quartz minerals

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Adsorption of Neutral Red Dye from an Aqueous Solution
Adsorption of Neutral Red Dye from an Aqueous Solution

The present study aimed to investigate the adsorption of Neutral Red dye NR from an aqueous solution onto sepiolite using 2 4 full factorial design The combined effect of initial dye concentration adsorbent dosage pH and particle size on adsorption of the dye was studied

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Adsorption of pyrene from aqueous solutions onto sepiolite
Adsorption of pyrene from aqueous solutions onto sepiolite

Polycyclic aromatic hydrocarbons PAHs are commonly referred to a large class of organic compounds which have been shown to be highly carcinogenic and to have a significant persistence in an environment for many years In this study the adsorption of pyrene which was chosen as a model PAH due to its specific volatility miscibility and relatively soluble properties onto sepiolite

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Adsorption Thermodynamics of Cobalt Ions onto
Adsorption Thermodynamics of Cobalt Ions onto

In order to investigate the adsorption thermodynamics of cobalt ions onto Attapulgite the Langmuir isotherm was studied The Langmuir adsorption isotherm is perhaps the best known of all isotherms describing adsorption 22 The theoretical Langmuir isotherm is often used to describe adsorption of a solute from a liquid solution as 2223 a e m a e

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Adsorption of Astrazon Blue FGRL onto sepiolite from
Adsorption of Astrazon Blue FGRL onto sepiolite from

In this study adsorption of Astrazon Blue FGRL on sepiolite meerschaum from aqueous solution was investigated using different parameters like initial dye concentration temperature contact time and solution pH The obtained results were then compared for all the parameters

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Cadmium sorption from aqueous solutions onto Iranian
Cadmium sorption from aqueous solutions onto Iranian

Abstract This work aims to investigate the efficiency of Fariman sepiolite from Iran as an adsorbent to remove Cd from aqueous solutions The effects of different experimental factors such as the initial Cd concentration contact time and the sorbent dose were investigated through a series of batch adsorption

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Adsorption kinetics of naphthalene onto organosepiolite
Adsorption kinetics of naphthalene onto organosepiolite

the evidence is provided that the adsorption 8 RS Juang SH Lin and KH Tsao Mechanism of naphthalene onto DTMA–sepiolite is a of sorption of phenols from aqueous solutions complex process so it cannot be sufficiently onto surfactantmodified montmorillonite J Col described by a single kinetic model through loid Interf

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Adsorption characterization of CoII ions onto chemically
Adsorption characterization of CoII ions onto chemically

Adsorption characterization of CoII ions onto chemically treated Quercus coccifera shell Equilibrium kinetic and thermodynamic studies BioRes 62 19541971 Abstract shell a abundant and inexpensive material is currently being investigated as an adsorbent to remove cobalt

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Kinetics and Thermodynamics of Lead Adsorption from
Kinetics and Thermodynamics of Lead Adsorption from

Sepiolite and zeolite yield adsorption capacities Qe was found to be 305 and 244 mgg 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

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Adsorption of methylene blue onto sonicated sepiolite
Adsorption of methylene blue onto sonicated sepiolite

The aim of the present study is to enhance the methylene blue MB adsorption of sepiolite by ultrasonic treatment The natural sepiolite was pretreated by sonication to improve the surface characteristics and enhance the dye uptake capacity Sonication process resulted in a significant increase in the specific surface area SSA of sepiolite

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