Electrochemical removal of bromate from drinking water

ABSTRACT

The electrochemical removal of bromate on a tin cathode has been studied by both electrochemical techniques, such as cyclic voltammetry and chronoamperometry, as well as by steady-state electrolytic experiments. The reduction of bromate in 2 M NaCl takes place efficiently at potentials more negative than −1.4 V vs. Ag/AgCl and the rate of the reduction displays a maximum at about −1.8 V, then decreases and consequently it increases again as the potential becomes more negative than −1.9 V. The % removal efficiency of bromate displays a maximum (75.6%) at −1.8 V, while the % selectivity of bromide displays a minimum (70.3%) at the same potential.

Keywords:

• Bromate
• Electrochemical
• Removal
• Reduction
• Tin cathode

Notes

Third International Conference on Environmental Management, Engineering, Planning and Economics (CEMEPE 2011) & SECOTOX Conference, 19–24 June 2011, Skiathos Island, Greece