Modeling the adsorption of Cd(II) onto goethite in the presence of citric acid

Lackovic, Kurt; Angove, Michael J.; Wells, John D.; Johnson, Bruce B.

doi:10.1016/j.jcis.2003.08.041

Cited by 63 publications

(38 citation statements)

References 12 publications

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“…When pH is lower than 2.3, Fe 3 O 4 -TMS can not adsorb Sr 2+ . This regularity has been reported in the adsorption of Pb(II) on diatomite and adsorption of Cd(II) onto goethite [23,24]. The adsorption capacity increases abruptly at pH 2.3-3.5, and maintains a high level at pH > 3.5.…”

Section: Effect Of Phsupporting

confidence: 74%

Facile Synthesis of Fe3O4-N-[(3-Trimethoxysilyl)propyl]ethylenediamine Triacetic-acid Trisodium Salt and Adsorption of Sr 2+

Hu¹,

Quan²

2016

JRST

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Section: Effect Of Phsupporting

confidence: 74%

Facile Synthesis of Fe3O4-N-[(3-Trimethoxysilyl)propyl]ethylenediamine Triacetic-acid Trisodium Salt and Adsorption of Sr 2+

Hu¹,

Quan²

2016

JRST

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“…The database was extended with the sorption of carbonate (Appelo et al 2002). Stoichiometric equations describing the sorption of citrate on goethite were adapted for the database after Lackovic et al (2003).…”

Section: Compilation Of the Chemical Database And The Phreeqc Input Filementioning

confidence: 99%

Modelling rhizosphere transport in the presence of goethite, including competitive uptake of phosphate and arsenate

2009

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A modelling approach was used to extend the knowledge about the processes that affect the availability of the nutrient P and the toxic agent As V in the rhizosphere in the presence of a strong sorbent. Based on compartment system experiments in which Zea mays was grown the following hypothesis were assumed: a) measured P concentration gradients can be explained by the mobilisation of P by the root exudate citrate, and b) measured As V concentration gradients can be explained by the simultaneous effect of the competitive sorption of As V and P and the competitive uptake of As V and P. First, the feasibility of the applied description of soil chemical processes was justified. Then competitive uptake was implemented in the computer code using two different mathematical approaches. Our model calculation provided support for hypothesis a) and suggested that hypothesis b) has to be extended. The results show that the competitive uptake of As V and P has an influence on As V concentrations in the rhizosphere, but including competitive uptake was not sufficient to predict observed As V concentration profiles. Recent results on plant As-metabolism like As III efflux and Si As III interaction probably have to be included in addition for simulation of measured As V concentration profiles.

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“…The steeper slope of the adsorption edge for Cd(II) ions may be due to the presence of pores in the sample, while the sample described by Janusz and Matysek (2006a,b) appears to have been virtually non-porous. The effect of the electrostatic field in pores should favour the adsorption of Cd(II) ions above pH iep , because the edls associated with the pore walls overlap and exert a strong attraction towards Cd(II) ions as counterions (Huang and Herbert 2004;Pivonka et al 2007). On the other hand, at high adsorption coverage, the adsorbed Cd(II) ions may repel each other.…”

Section: Adsorption Of Cd(ii) Ions At the Tio 2 /Naclo 4 Interfacementioning

confidence: 99%

“…This effect was not observed in the goethite/electrolyte system (Lackovic et al 2004a,b;Janusz and Matysek 2006b) because of the high affinity of the citrate anion to iron. However, for other systems such as TiO 2 /Cd(II) oxalate solutions and kaolinite or illite/Cd(II) citrate solutions, a decrease in Cd(II) ion adsorption has been observed (Janusz and Matysek 2006a,b;Lackovic et al 2004b).…”

Section: -2mentioning

confidence: 99%

Experimental Study of the Co-Adsorption of Cadmium and Citrate Ions onto a TiO₂ (Anatase)/Electrolyte Solution Interface

Janusz

Sędłak

Matysek-Nawrocka

2008

Adsorption Science & Technology

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A study of the co-adsorption of cadmium and citrate ions onto the mono-dispersed TiO 2 (anatase)/NaClO 4 aqueous solution interface is presented. The influence of ionic strength and pH on the adsorption of cadmium and citrate ions in this system was investigated. The surface charge density, the ζ-potential and adsorption-edge (or envelope) parameters such as pH 50% and ∆pH 10-90% were also determined for different concentrations of adsorbed ions. The presence of citrate anions increased the adsorption of Cd(II) ions at low pH values but led to a corresponding decrease at high pH values. The influence of pH on the shapes of the corresponding adsorption isotherms for citrate anions was characteristic of that for anion adsorption onto metal oxides; this is referred to as the "adsorption envelope".

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Modeling the adsorption of Cd(II) onto goethite in the presence of citric acid

Cited by 63 publications

References 12 publications

Facile Synthesis of Fe3O4-N-[(3-Trimethoxysilyl)propyl]ethylenediamine Triacetic-acid Trisodium Salt and Adsorption of Sr 2+

Facile Synthesis of Fe3O4-N-[(3-Trimethoxysilyl)propyl]ethylenediamine Triacetic-acid Trisodium Salt and Adsorption of Sr 2+

Modelling rhizosphere transport in the presence of goethite, including competitive uptake of phosphate and arsenate

Experimental Study of the Co-Adsorption of Cadmium and Citrate Ions onto a TiO₂ (Anatase)/Electrolyte Solution Interface

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Modeling the adsorption of Cd(II) onto goethite in the presence of citric acid

Cited by 63 publications

References 12 publications

Facile Synthesis of Fe3O4-N-[(3-Trimethoxysilyl)propyl]ethylenediamine Triacetic-acid Trisodium Salt and Adsorption of Sr 2+

Facile Synthesis of Fe3O4-N-[(3-Trimethoxysilyl)propyl]ethylenediamine Triacetic-acid Trisodium Salt and Adsorption of Sr 2+

Modelling rhizosphere transport in the presence of goethite, including competitive uptake of phosphate and arsenate

Experimental Study of the Co-Adsorption of Cadmium and Citrate Ions onto a TiO2 (Anatase)/Electrolyte Solution Interface

Contact Info

Product

Resources

About

Experimental Study of the Co-Adsorption of Cadmium and Citrate Ions onto a TiO₂ (Anatase)/Electrolyte Solution Interface