Effect of the chemical bond on the electrosorption and desorption of anions during capacitive deionization.

This paper is concerned with the effect of the chemical bond on the electrosorption and desorption of anions during capacitive deionization (CDI). An empirical equation developed firstly based on the experimental data in the electrosorption of Cl. The empirical equation shows that the electrosorption capacity exhibits a logarithmic relationship with anode potential.

Effect of the electronegativity on the electrosorption selectivity of anions during capacitive deionization.

The effect of electronegativity on the electrosorption selectivity of anions during capacitive deionization was investigated via a combination of experimental and theoretical studies. A model was developed based on chemical thermodynamics and the classic Stern's model to reveal the role of the anode potential and to describe electrosorption selectivity behavior during capacitive deionization. The effects of the anode potential on the adsorption of Cl and ReO were studied and the obtained data were used to validate the model.

Study of arsenic(V) adsorption on bone char from aqueous solution.

Arsenic is a toxic element and may be found in natural waters as well as in industrial waters. Leaching of arsenic from industrial wastewater into groundwater may cause significant contamination, which requires proper treatment before its use as drinking water. The present study described the removal of As(V) on bone char in batch studies conducted as a function of pH, dosage of adsorbent, and contact time.