An EXFAS study of the structures of copper and phosphate sorbed onto goethite

Lin, Su‐Hsia; Kao, Hsiang‐Chien; Cheng, Chieng-Hsien; Juang, Ruey‐Shin

doi:10.1016/j.colsurfa.2003.12.005

Cited by 43 publications

(25 citation statements)

References 11 publications

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“…The surface species ϭFeO-Cu ϩ and ϭFeO-CuOH have been reported for all iron (hydr)oxides and various SCM (e.g., Rodda et al 1996;Jung et al 1998;Robertson and Leckie, 1998;Buerge-Weirich, 2002;Subramaniam, 2003). These species have been shown to exist spectroscopically (EXAFS) by Bochatay (1997), Parkman et al (1999), Alcacio et al (2001), Lin et al (2004), andFlogeac et al (2004). Rodda et al (1996) fitted their experimental data by a Langmuir model for describing the competitive sorption of monomeric CuOH ϩ and dimeric Cu 2 (OH) 2 2ϩ onto goethite.…”

Section: Application Example: Cu(ii) Sorption Onto Goethitementioning

confidence: 81%

Blind prediction of Cu(II) sorption onto goethite: Current capabilities of diffuse double layer model

Richter

Brendler

Nebelung

2005

Geochimica et Cosmochimica Acta

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Section: Application Example: Cu(ii) Sorption Onto Goethitementioning

confidence: 81%

Blind prediction of Cu(II) sorption onto goethite: Current capabilities of diffuse double layer model

Richter

Brendler

Nebelung

2005

Geochimica et Cosmochimica Acta

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“…Recently, attention has been focused on phosphate adsorbents because of the most economical and applicable of adsorption. Successful results have been obtained using fly ash [5,7,15], aluminum oxide [8][9][10], iron oxide [11][12][13][14], slag [16,17], red mud [18,19], silicates [20,21], activated carbon [22], and gas concrete [23].…”

Section: Introductionmentioning

confidence: 94%

Removal of phosphate from aqueous solution by red mud using a factorial design

Zhao

Wang

Luan

et al. 2009

Journal of Hazardous Materials

123

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a b s t r a c tThe purpose of the work is to study the adsorption of phosphate on red mud from aqueous solutions using 2 3 full factorial designs. The important parameters, which affect the removal efficiency of phosphate and final pH of solution (pH f ), such as phosphate concentration, initial pH of solution (pH i ) and the red mud dosage were investigated. The effects of individual variables and their interaction effects for dependent variables, namely, phosphate removal efficiency and pH f were determined. The results of the study showed that phosphate removal efficiency and pH f were found to be 97.6% and 10.9 with optimal reaction conditions initial phosphate concentration 25 mg l −1 , red mud dosage 1.5 g l −1 , pH i 3.0, respectively. It was found that adequate amount of calcium ions and higher final pH than 9 are ideal conditions for maximum phosphate removal.

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“…They found that Pb formed an inner-sphere bidentate complex and the local atomic structure surrounding Pb was not changed with time. Lin et al (2004) used XAS to explain the increased sorption of Cu and phosphate in binary solute systems. Ramstedt et al (2005) combined batch adsorption and XAS to examine the co-adsorption of Cd and glyphosate at wateremanganite interface.…”

mentioning

confidence: 99%

Mechanisms of competitive adsorption of Pb, Cu, and Cd on peat

Qin

Wen

Shan

et al. 2006

Environmental Pollution

231

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X-ray absorption spectroscopic study provided an evidence for the competitive adsorption mechanism of Pb, Cu, and Cd on peat. AbstractCombined use of batch equilibration adsorption and X-ray absorption spectroscopy (XAS) was employed to study the mechanisms of competitive adsorption of Pb, Cu, and Cd on Danish and Heilongjiang peat in single-and multi-solute systems. The adsorption capacity and initial adsorption rate on the same peat in single-solute systems followed the order Pb > Cu > Cd. Both the adsorbed amount of each metal (q 0 m ) and its initial adsorption rate were decreased in multi-solute systems. It was observed that the adsorbed amounts of metals at low-energy adsorption sites (q m,1 ) decreased pronouncedly compared to those at high-energy adsorption sites (q m,2 ), indicating that the competitive adsorption of Pb, Cu and Cd occurred mainly at the low-energy adsorption sites. XAS study revealed that both Pb and Cu were coordinated in peat predominantly to carboxylic moieties without excluding the hydroxyl groups, thereby providing an insight into the mechanism of competitive adsorption of Pb and Cu on peat.

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An EXFAS study of the structures of copper and phosphate sorbed onto goethite

Cited by 43 publications

References 11 publications

Blind prediction of Cu(II) sorption onto goethite: Current capabilities of diffuse double layer model

Blind prediction of Cu(II) sorption onto goethite: Current capabilities of diffuse double layer model

Removal of phosphate from aqueous solution by red mud using a factorial design

Mechanisms of competitive adsorption of Pb, Cu, and Cd on peat

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