cadmium adsorption on manganese modified

ADSORPTION OF CADMIUM IONS FROM AQUEOUS …

Adsorption of Cadmium Ions from Aqueous Solutions on Modified Sorbents 183 60 % in plumbing. The biological purification of wastewaters removes 30–80 % of cadmium. Chemical treatment of wastewaters from cadmium is carried out by adding alkali. At the enterprises of ferrous metallurgy the chemical purification of wastewaters from cadmium with

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ADSORPTION OF Zn2+, Cd2+ AND Cu2+ ON ZEOLITES …

Adsorption of Zn2+, Cd2+ and Cu2+ on zeolites coated by manganese and iron oxides 895 modified by iron oxide (FeOCZ) has a high capability to adsorb high concentrations of heavy metals from solutions. According to literature, the FeOCZ has a higher specific

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Adsorption of Divalent Cadmium (Cd(II)) from Aqueous ...

 · The XPS data suggests that cadmium was mainly adsorbed as Cd2+ and was attached to the NH2 group. The adsorption data could be fitted to a two-site Langmuir adsorption isotherm. The data obtained at various temperatures provided a single characteristic curve when correlated according to a modified Polanyi's potential theory.

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Removal of Cadmium and Zinc from Aqueous Solutions Using ...

Cadmium adsorption on modified chitosan-coated bentonite: batch experimental studies. ... Adsorption of Cd2+ on hydrous manganese dioxide from aqueous solutions. Desalination 2006, 194 ( 3) , 21. DOI: 10.1016/j.desal.2005.10.023. ... Modeling of cadmium(II) adsorption on kaolinite-based clays in the absence and presence of humic acid.

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Adsorption of cadmium by Na and Fe modified zeolitic tuffs ...

 · In the present study the process of adsorption of cadmium from aqueous solutions using Na-zeolitic tuff, Fe-zeolitic tuff and carbonaceous material from pyrolyzed sewage sludge treated with HCl was investigated. The cadmium removal efficiency was studied as a function of contact time, adsorbate concentration, pH and adsorbent dose.

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Adsorption of Cadmium Ions on Oxygen Surface Sites in ...

The adsorption of cadmium ions was enhanced dramatically by oxidation of the carbon. The ratio of released protons to adsorbed cadmium ions on oxidized carbon was approximately 2, indicating cation exchange was involved in the process of adsorption. Na+ exchange studies with the oxidized carbon gave a similar ratio.

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Adsorption of copper, cadmium, lead and zinc onto a ...

Adsorption of copper, cadmium, lead and zinc onto a synthetic manganese oxide Lo c Della Puppa, Fran˘cois Bordas, Michael Kom arek, Jean-Claude Bollinger, Emmanuel Joussein To cite this version: Lo c Della Puppa, Fran˘cois Bordas, Michael Kom arek, Jean-Claude Bollinger, Emmanuel Jous-sein.

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The Adsorption of Zinc(II) from Aqueous Solution on ...

The removal of Zn (II) ions from aqueous solution was studied using raw diatomite and MnO2 modified diatomite samples at different adsorption parameters such as contact temperature, contact time, initial metal ions concentration and dosage of diatomite. The results showed that modified diatomite had a better adsorption than raw diatomite; adsorption increase with increase of time and then ...

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Cadmium adsorption on manganese modified bentonite and ...

 · The modified surface of granulated activated carbon increased the adsorption capacity for adsorption of Cu 2 + and Cd 2 + greatly (Fan and Anderson, 2005). Puppa performed the adsorption of cations Cd 2 +, Zn 2 + and Cu 2 + on amorphous manganese oxides and synthetic birnessite (MnO 2) at pH 4 and 5.5. The both adsorbents were found to be ...

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Kinetics and Isotherm Studies of Cadmium Adsorption ...

Request PDF on ResearchGate | Kinetics and Isotherm Studies of Cadmium Adsorption Manganese Nodule Residue | The adsorption equilibrium and kinetics studies of cadmium (Cd) ions from aqueous ...

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Adsorption antagonism and synergy of arsenate(V) and ...

 · Then, a series of adsorption experiments, using single- and binary-metal solutions of As(V) and Cd(II), were conducted to investigate the performances of modified biochars on metal adsorption compared to pristine rice straw biochar (RS char). Results indicated Fe modification improved the As(V) adsorption capacity of biochar.

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ADSORPTION OF CADMIUM AND COPPER BY MANGANESE …

Cadmium and copper adsorption by δ-MnO2 was investigated by potentiometric titration over a range of pH. Adsorption increased with increasing pH because of hydrolysis of metal cations and/or variable charge sites on δ-MnO2 δ-MnO2. The surface acidity constant for δ-MnO2 was determined using the Triple Layer Model to be pKint,a2 = 5.34.

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Adsorption of copper, cadmium, lead and zinc onto a ...

Adsorption of copper, cadmium, lead and zinc onto a synthetic manganese oxide Lo c Della Puppa, Fran˘cois Bordas, Michael Kom arek, Jean-Claude Bollinger, Emmanuel Joussein To cite this version: Lo c Della Puppa, Fran˘cois Bordas, Michael Kom arek, Jean-Claude Bollinger, Emmanuel Jous-sein.

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Cadmium adsorption on manganese modified bentonite and ...

 · Read "Cadmium adsorption on manganese modified bentonite and bentonite–quartz sand blend, International Journal of Mineral Processing" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

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Influence of removal of organic matter and iron and ...

In this study, organic matter and iron and manganese oxides in aggregates of different particle sizes from red paddy soil were selectively removed. The influence of these components on cadmium adsorption was also examined. Results showed that Langmuir equation could accurately describe the adsorption characteristics of Cd in bulk soil and ...

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Characteristic of adsorption cadmium of red soil amended ...

Herein, we prepare a ferromanganese binary oxide-biochar composite (FMBC) and compare its potential for remediating Cd-contaminated red soil with that of biochar (BC), showing that (i) the obtained adsorption data are well described by the Langmuir model and (ii) Cd adsorption capacity increases with increasing adsorbent dosage.

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Mechanism of adsorption of cadmium and lead ions by iron ...

Full Article. Mechanism of Adsorption of Cadmium and Lead Ions by Iron-activated Biochar. Liqiang Cui, a Tianming Chen, a Chuntao Yin, a Jinlong Yan, a,* James A. Ippolito, b and Qaiser Hussain c Heavy metal removal from aqueous matrices may help reduce disease and cancer incidences.

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Sorption of Lead Ions on Diatomite and Manganese Oxides ...

Adsorption properties of diatomite modified by microwave on lead, chromium and cadmium in landfill leachate under different conditions were studied with diatomite as adsorbent, and the best ...

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Investigating the sorption behavior of cadmium from ...

Abstract. In this work, a KMnO modified-biochar-based composite material with manganese oxide produced at 600 °C was fabricated to investigate the sorption mechanism of Cd(II) and to comprehensively evaluate the effect of the modification on biochar properties.Cd(II) adsorption mechanisms were mainly controlled by interaction with minerals, complexation with oxygen-containing …

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Study on the adsorption behavior of cadmium, copper, and ...

 · The material was evaluated in adsorbing cadmium (II), copper (II), and lead (II) ions. The adsorption behavior of cadmium, copper, and lead ions on the absorbent material was studied. Experiment results show that the adsorption rate is rapid for heavy metal ions, and the adsorption amount tends to constant after 40 min.

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Cadmium and nickel adsorption and uptake in cattail as ...

The effects of iron (Fe) and manganese (Mn) plaque on the adsorption and uptake of cadmium (Cd) and nickel (Ni) in cattail (Typha latifolia L.) were investigated in …

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Removal of cadmium, zinc, manganese and chromium cations ...

 · For zinc, cadmium, manganese and chromium, the R L values were between 0 and 1.0, indicating that adsorption of these heavy metals by vermiculite is favorable in agreement with ΔG° values. Download : Download full-size image; Fig. 4. Isotherm of exchange of cadmium in vermiculite, at various concentrations, at 298 ± 1 K and its linearized form.

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Isotherm studies of lead(II), manganese(II), and cadmium ...

The removal of lead(II) by natural bentonite in single-component system is 0.0448 mmol/g. The order of selectivity is lead(II) > cadmium(II) > manganese(II). Result also shows that both clays demonstrate a preferable adsorption toward lead(II). Lead(II) adsorption is less affected by the presence of counter cations in multimetal solution.

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Characterization and Properties of Manganese Oxide Coated ...

Kinetics and thermodynamics of the phosphine adsorption on the modified activated carbon. Frontiers of Chemical Science and Engineering 2011, 5 (2) , 208. DOI: 10.1007/s 0. Weihua Zou, Lei Zhao, Runping Han. Adsorption characteristics of uranyl ions by manganese oxide coated sand in batch mode.

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Thermodynamics of Cadmium Sorption on Different Soils of ...

A sorption study was conducted on different soils collected from five agroecological zones of West Bengal, India, to understand the soil environmental behavior and fate of cadmium. For this purpose batch adsorption experiments were carried out at the native soil pH and at three different temperatures (25°C, 35°C, and 45°C).

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Cadmium adsorption on manganese modified bentonite and ...

Cadmium adsorption on manganese modified bentonite and bentonite–quartz sand blend Article in International Journal of Mineral Processing 150 · March 2016 with 49 Reads How we measure 'reads'

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Study on the adsorption behavior of cadmium, copper, and ...

 · The material was evaluated in adsorbing cadmium (II), copper (II), and lead (II) ions. The adsorption behavior of cadmium, copper, and lead ions on the absorbent material was studied. Experiment results show that the adsorption rate is rapid for heavy metal ions, and the adsorption amount tends to constant after 40 min.

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An Efficient Adsorption of Manganese Oxides/Activated ...

 · The adsorption capacity was observed to increase with increasing pH. In this system, adsorption is weakly affected by ionic strength. Adsorption occurs through chemical sorption and is endothermic. The carboxyl and hydroxyl groups play an important role in \(\hbox {Pb}^{2+}\) adsorption through surface complexation with \(\hbox {Pb}^{2+}\).

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Sorption of Heavy Metals on Clay Minerals and Oxides: A ...

Heavy metal polluted water is mostly remediated using ion-exchange, adsorption and mechanism . Even though, clay minerals have adsorption affinity for heavy metals, e.g. Cu and Zn, their roles are not significant when compared to iron oxides (e.g. goethite), manganese oxides (e.g. birnessite) and organic materials on a unit mass basis .

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Kinetics and Isotherm Studies of Cadmium Adsorption ...

Request PDF on ResearchGate | Kinetics and Isotherm Studies of Cadmium Adsorption Manganese Nodule Residue | The adsorption equilibrium and kinetics studies of cadmium …

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Journal of Chemical and Pharmaceutical Research, 2018, 10 ...

The influence of pH on the adsorption of heavy metals cadmium, manganese and cobalt was studied on a chemically modified clay. The isotherms were realized at pH 2; 3; 4 and 6.5. The heavy metals were applied as nitrates with initial concentrations ranging from 10 to 50 ppm. The adsorption was

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Adsorption of Divalent Cadmium (Cd(II)) from Aqueous ...

 · The XPS data suggests that cadmium was mainly adsorbed as Cd2+ and was attached to the NH2 group. The adsorption data could be fitted to a two-site Langmuir adsorption isotherm. The data obtained at various temperatures provided a single characteristic curve when correlated according to a modified Polanyi's potential theory.

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