Figure 6 | Scientific Reports

Figure 6

From: Pathway of FeEDTA transformation and its impact on performance of NOx removal in a chemical absorption-biological reduction integrated process

Figure 6

(a) Effect of iron loss and EDTA degradation on the NO removal efficiency (initial concentration of 10.35 mM total Fe and 7.55 mM EDTA); (b) Biofilter performance at low iron and EDTA concentration (initial concentration of 0.78 mM total Fe and 0.085 mM EDTA). (NO, 400 ppm; O2, 6% (v/v); G, 1 L min−1; VL, 40 L h−1; T, 50 °C; pH, 6.8–7.0).

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