MEASURING ELECTROCHEMICAL POTENTIALS IN BAYER LIQUORS

Power G, Loh JSC, Jeff rey M, Puddey G

Knowledge of the electrochemical potential (EH) is essential to the understanding of redox processes and the speciation of organic compounds and metal ions in Bayer process liquors, and for the development of technologies for the removal of organic compounds by oxidation. Despite this, there is little information in the literature on the measurement of EH in Bayer process liquors. This paper reports preliminary studies aimed at filling this gap, and describes the general electrochemical characteristics of a particular Bayer process spent liquor.