IMPREGNATED ELECTRODE FOR CAPACITIVE DEIONISATION, PROCESS FOR PREPARING THE ELECTRODE AND ITS USE IN WATER TREATMENT AS WELL AS APPARATUS EMPLOYING THE ELECTRODES

摘要

Disclosed is an electrode an electrode for capacitive deionization comprising (i) an adsorbent having specific surface area of 100 m 2/g to 1300 m 2/g; (ii) conductive carbon black; and (iii) a binder; wherein said adsorbent is impregnated with a substance having conductivity in the range of 105 S/m to 107 S/m and standard hydrogen potential in the range of 0.3 V to 1.3 V. The electrode provides enhanced recovery and greater reduction in total solids and is more energy efficient. The process or preparing the electrode and a gravity fed water purification apparatus incorporating said electrode are also disclosed.