Phosphate Application Impacts on Cadmium Sorption in Acidic and Calcareous Soils

Lee, J. H.; Doolittle, James J.

doi:10.1097/00010694-200206000-00004

Cited by 28 publications

(9 citation statements)

References 25 publications

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“…Moreover, As(V) and Cd probably form the CdH 2 AsO 4 + and CdHAsO 4 0 complexes in solution, which are less electric attractive comparing with AsO 4 3− . Similar complexes (CdH 2 PO 4 + and CdHPO 4 0 ) were reported in the PO 4 3− and Cd 2+ co-existing system [15,35]. There is a little increase in As(V) sorption amount after mixing with Cd (Fig.…”

Section: Adsorption Dynamicssupporting

confidence: 77%

Arsenate and cadmium co-adsorption and co-precipitation on goethite

Jiang

Luo

et al. 2013

Journal of Hazardous Materials

144

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Section: Adsorption Dynamicssupporting

confidence: 77%

Arsenate and cadmium co-adsorption and co-precipitation on goethite

Jiang

Luo

et al. 2013

Journal of Hazardous Materials

144

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“…However, the reduction of Cd adsorption in the presence of phosphate in some soils has also been reported (Krishnamurti et al, 1999). Additionally, Lee and Doolittle (2002) found that Cd adsorption tended to decrease in the presence of monopotassium phosphate but to increase in the presence of dipotassium phosphate in soils.…”

Section: Introductionmentioning

confidence: 89%

Effect of phosphate on the adsorption of Cu and Cd on natural hematite

Zhang

Jiang

et al. 2006

Chemosphere

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Interactions between anions and cations are important to understand the chemical processes of pollutants in environment. In this study, batch experiments were carried out to investigate the simultaneous adsorption of Cu and Cd on hematite as affected by phosphate. Phosphate pretreatment suppressed the maximum adsorption of Cu and Cd on hematite and moved the adsorption pH edges to a higher pH range. Phosphate application time had a marked impact on Cu and Cd adsorption and longer contact time resulted in more reduction of Cu and Cd adsorption. Results of backtitration, Fourier transform infrared (FTIR) spectroscopy study and ionic strength effect on the adsorption revealed that Cu and Cd were adsorbed on hematite mainly through the inner-sphere complex formation mechanism and phosphate treatment reduced the inner-sphere adsorption sites, thus decreasing Cu and Cd adsorption on hematite.

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“…2a). The increase in soil pH may be at least partially attributed to P addition based on the equilibrium reactions associated with K 2 HPO 4 (Lee and Doolittle 2002). As shown in Fig.…”

Section: Resultsmentioning

confidence: 94%

Effect of Phosphate Addition on Cadmium Precipitation and Adsorption in Contaminated Arable Soil with a Low Concentration of Cadmium

Kim

Owens

Kim

et al. 2015

Bull Environ Contam Toxicol

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The objectives of this study were to determine (1) the phosphorus (P) level required to induce cadmium (Cd) precipitation in a contaminated arable soil with low concentrations of Cd and (2) the primary mechanism of Cd immobilization at different P levels. Phosphorus was added at levels of 0 800, 1600, and 16,000 mg P kg(-1) to a soil containing 5.57 mg Cd kg(-1). The concentration of 1 M NH4OAc extractable Cd decreased significantly with P levels up to 1600 mg kg(-1) due to an increase in soil pH and negative charge of soil (p<0.001). A further decrease in 1 M NH4OAc extractable Cd concentration was noted when P was increased to 16,000 mg P kg(-1) and may have been the result of Cd precipitation. This study suggest that adding P at high levels may help in the formation of geochemically stable Cd minerals in soil containing low levels of this heavy metal.

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Phosphate Application Impacts on Cadmium Sorption in Acidic and Calcareous Soils

Cited by 28 publications

References 25 publications

Arsenate and cadmium co-adsorption and co-precipitation on goethite

Arsenate and cadmium co-adsorption and co-precipitation on goethite

Effect of phosphate on the adsorption of Cu and Cd on natural hematite

Effect of Phosphate Addition on Cadmium Precipitation and Adsorption in Contaminated Arable Soil with a Low Concentration of Cadmium

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