Environmental Engineering Reference
In-Depth Information
table 24.2
(
Continued
)
No.
Organic pollutants
method
Catalyst
Optimum reaction conditions
important findings
references
7.
Phenol
Photoelectro-
Fenton-like
Nanoscale zero valent iron
(nZvi)
30 min, 0.5 g/l of nZvi, 500 mg/l of
H
2
O
2
, phenol 200 mg/l, pH 6.2,
12 ma/cm
2
of current density
The removal efficiency was
increased with an increase in
nZvi dosage and decreased with
an increase in initial phenol
concentration and initial pH
[85e]
Pseudo-first-order kinetics
8.
Basic red 46 (Br46)
Photoelectro-
Fenton (PeF)
TiO
2
nanoparticles
immobilized on glass
plates
Fe(iii) 0.1 mm, Br46 15 mg/l,
35 min, applied current 300 mA
PeF/uv/TiO
2
was the most
efficient processes in comparison
with uv/TiO
2
, eF, PeF, and
PeF/uv/TiO
2
[85f]
9.
Phenol
Photoelectro-
Fenton
α-Fe
2
O
3
/TiO
2
nanotubes
(TiO
2
NTs)
Catalyst 2 mg, 10 mg/l phenol,
cathode nickel, TiO
2
NTs anode,
5v, 1 ml of the H
2
O
2
solution (3%)
α-Fe
2
O
3
/TiO
2
nanotubes electrodes
synthesized by electrochemical
deposition method
[85g]
This electrode showed an enhanced
absorbance in the visible light
region and had good stability
10.
C.i. Basic yellow 28
(By28)
Photoelectro-
Fenton (PeF)
ZnO nanoparticles
immobilized on glass
plates
20 mg/l of By28, pH 3.0, Na
2
SO
4
0.05 m, i = 100 mA, Fe
3+
0.1 mm
A comparison of PeF/ZnO
processes with different systems
follows a decreasing order: PeF/
ZnO > PeF > uv/
ZnO > eF > uv-C
[85h]
11.
rhodamine B (rB)
Fenton-like
Nanoscaled BiFeO
3
rB 10 µmol/l, H
2
O
2
10 mmol/l,
catalyst 0.5 g/l, pH 5
Nanoscaled BiFeO
3
effectively
catalyzed the decomposition of
H
2
O
2
into OH radicals
[83]
The catalyst was demonstrated to
have stability and reusability
