Standard reporting of Electrical Energy per Order (EEO) for UV/H2O2 reactors

O. KEEN; J. BOLTON; M.I. LITTER; K. BIRCHER; T. OPPENLÄNDER

PURE AND APPLIED CHEMISTRY

INT UNION PURE APPLIED CHEMISTRY

Año: 2018 vol. 90 p. 1487 - 1499

0033-4545

The concept of Electrical Energy per Order (EEO) was introduced in 2001 as a figure-of-merit for evaluatingenergy requirements of ultraviolet-based advanced oxidation processes (UV AOPs) used for the degradation of variousorganic contaminants. The EEO parameter represents the energy input into the reactor that can achieve an order of magnitude decrease in concentration of a target contaminant in a unit volume. Since the introduction of this parameter, it hasbecome increasingly popular among UV AOP researchers and practitioners. However, the EEO is often reported withoutimportant details that affect the parameter, making difficult its interpretation. The EEO depends on a variety of factors(e.g. the concentration and the identity of the target contaminant and the amount of hydrogen peroxide added). Therefore,the EEO parameter needs to be reported in the literature along with several other experimental details affecting the reactorperformance so that proper comparison can be achieved between reactors across studies or manufacturers. This paperdiscusses the proper application of the EEO parameter for bench-, pilot- and full-scale studies. Sucralose (non-caloricsweetener, C12H19Cl3O8) is proposed as a standard substance for reactor comparison