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Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for Cu(II) Through Microwave Pre-Pyrolysis
Published on: February 12, 2019
Solid phase extraction of copper(II) by fixed bed procedure on cation exchange complexing resins.
Maria Pesavento1, Michela Sturini, Girolamo D'Agostino
1Dipartimento di Chimica Generale, Università di Pavia, Via Taramelli 12, 27100 Pavia, Italy. maria.pesavento@unipv.it
Journal of Chromatography. A
|December 29, 2009
Summary
A simple model predicts metal ion recovery efficiency using complexing resins. This model, based on sorption equilibria and kinetics, helps evaluate copper(II) breakthrough volumes under various conditions.
Area of Science:
- Analytical Chemistry
- Environmental Chemistry
- Materials Science
Background:
- Solid phase extraction (SPE) is crucial for metal ion recovery.
- Complexing resins offer selective metal ion sorption.
- Predictive models are needed for optimizing SPE efficiency.
Purpose of the Study:
- To develop a simple model for predicting metal ion recovery efficiency in complexing resin columns.
- To evaluate the sorption equilibria and kinetics of metal ions on resins.
- To assess the model's ability to predict breakthrough volumes for copper(II).
Main Methods:
- A two-parameter model was developed.
- Sorption equilibria were evaluated using the Gibbs-Donnan model.
- Adsorption kinetics were determined by assuming ion exchange as the rate-limiting step.
Main Results:
- The model successfully predicted parameters related to sorption equilibria and kinetics.
- Predicted parameters allowed for the evaluation of copper(II) breakthrough volumes.
- The model is applicable across different complexing resins and conditions (acidity, ionic composition).
Conclusions:
- A straightforward model can accurately predict metal ion recovery efficiency in SPE.
- The model provides insights into the fundamental processes governing metal ion sorption on complexing resins.
- This predictive capability aids in optimizing SPE processes for metal recovery.
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