The study began by using two of the most common reactor types, the point-plate reactor with discharges directly in liquid (Fig. 3(a)) and discharges in gas (Fig. 3(b)). As shown in Fig. 4, the performance of the liquid discharge reactor is poor, though the removal efficiency (discussed in Section 3.6) is of the same order of magnitude as those reported for this reactor type in other plasma studies [11]. The performance of the gas discharge reactor (Fig. 4) was significantly better, with an observed rate constant (discussed in the following section) approximately 16 times higher than that for the liquid discharge.