using a Pt/carbon felt cell at 60 mA. After 360 min of electrolysis, 85% and 89%
mineralization, respectively, was achieved, indicating the high effectiveness of the
nanocatalyst, even superior to that of Fe
2+ for
• OH generation. This should further
encourage the research into novel nanomaterials with a higher catalytic activity and
great stability for practical wastewater treatment, aiming to implement hetero-EF at
industrial scale.
Fig. 11.6 (a) Schematic mechanisms for the removal of humic acid (HAs) and Cr(VI) by hetero-EF
process with a BDD/Pt cell using Pd/Fe 3 O 4 as catalyst. (Adapted from Huang et al. (2017),
Copyright 2017, with permission from Elsevier). (b) Normalized TOC removal with electrolysis
time for the treatment of 175 mL of 0.25 mM of the antibiotic enoxacin in 0.05 M Na 2 SO 4 at pH 3.0
by ( ) homogeneous EF with 0.30 mM Fe
2+ and ( ) hetero-EF with 0.1 g of Fe 2 O 3 –kaolin using a
Pt/carbon felt cell. Applied current: 60 mA. (Adapted from Özcan et al. (2017), Copyright 2017,
with permission from Elsevier)
11 The Use of Nanomaterials in Electro-Fenton and Photoelectro-Fenton Processes
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