2018
DOI: 10.1021/acsearthspacechem.8b00160
|View full text |Cite
|
Sign up to set email alerts
|

Carbonate Adsorption to Ferrihydrite: Competitive Interaction with Phosphate for Use in Soil Systems

Abstract: Carbonate (CO3) interacts with Fe-(hydr)oxide nanoparticles, affecting the availability and geochemical cycle of other important oxyanions in nature. Here, we studied the carbonate–phosphate interaction in closed systems with freshly prepared ferrihydrite (Fh), using batch experiments that cover a wide range of pH values, ionic strength, and CO3 and PO4 concentrations. The surface speciation of CO3 has been assessed by interpreting the ion competition with the Charge Distribution (CD) model, using CD coefficie… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
3
1

Citation Types

1
59
0

Year Published

2020
2020
2024
2024

Publication Types

Select...
6
1

Relationship

1
6

Authors

Journals

citations
Cited by 52 publications
(60 citation statements)
references
References 67 publications
1
59
0
Order By: Relevance
“…This is due to the competition of CO 3 and PO 4 for the same binding sites at the mineral surfaces. In the presence of CO 3 , the decrease of the PO 4 adsorption is most distinct for Fh ( Figure 1 a), particularly at low PO 4 concentrations, illustrating that CO 3 suppresses PO 4 adsorption more efficiently on Fh 42 than on goethite. 40 , 42 Differences in the surface speciation of CO 3 might explain the different CO 3 –PO 4 interactions for both oxides.…”
Section: Resultsmentioning
confidence: 97%
See 3 more Smart Citations
“…This is due to the competition of CO 3 and PO 4 for the same binding sites at the mineral surfaces. In the presence of CO 3 , the decrease of the PO 4 adsorption is most distinct for Fh ( Figure 1 a), particularly at low PO 4 concentrations, illustrating that CO 3 suppresses PO 4 adsorption more efficiently on Fh 42 than on goethite. 40 , 42 Differences in the surface speciation of CO 3 might explain the different CO 3 –PO 4 interactions for both oxides.…”
Section: Resultsmentioning
confidence: 97%
“…Actually, the relationship Γ i – c i is the competitive adsorption isotherm of PO 4 in the NaHCO 3 solution, whose interpretation will depend on the type of metal-(hydr)oxide used as reference in the CD model calculations. 42 For a chosen reference oxide, a minimum set of two ( i = 2) combinations of c i and SSR i allows the calculation of the surface area A according to with Δ indicating the change in the values of the respective parameters with indices i = 1 and 2.…”
Section: Resultsmentioning
confidence: 99%
See 2 more Smart Citations
“…Interactions with these OH groups can even alter the conversion pathways of Fh to other iron oxides [25][26][27][28][29][30] , and permanently occlude these compounds in the crystalline structure of these minerals. Still, our lack of knowledge on the composition and structure of Fh nanoparticle surfaces continues to challenge understanding reaction mechanisms that Fh hosts in nature and technology [31][32][33][34] .…”
mentioning
confidence: 99%