686 XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3
degradation efficiency of NC is lower than that of the blank
control group, which may be attributed to the existence of
clinoptilolite particles in the simulated mineral processing
wastewater, thus affects the UV light path and results in
the utilization decline. Notably, the adsorption capacity
of ALC enhances obviously compared with NC and this
result is in good consistency with the BET characterization.
Namely, enough micropores are generated within ALC
owing to the dealumination and channel expansion pro-
cesses after acid-leaching. Therefore, ALC is more suitable
for using as photocatalyst support than NC. Besides, pure
TiO2 exhibits excellent SIPX degradation efficiency under
UV irradiation. About 91.2% SIPX can be removed within
30 min. Based on the photodegradation kinetic curves
shown in Figure 7b, it can be seen that all SIPX degradation
processes follow the pseudo-first-order kinetic model well.
Although TiO2 has the larger photodegradation rate, TC
is still the better choice to proceed the subsequent further
optimization considering the cost effectiveness.
Figure 8a exhibits the photodegradation efficiencies
of ATC, MTC and BTC under visible irradiation. Clearly,
three ternary composite photocatalysts show excellent visi-
ble light catalytic activity. Under the conditions of 20 mg/L
SIPX and 400 W, the SIPX photodegradation efficiency
Figure 6. (a) UV–vis DRS and (b) band gaps of the samples
Figure 7. (a) Degradation efficiency curves and (b) kinetic curves of the different samples
degradation efficiency of NC is lower than that of the blank
control group, which may be attributed to the existence of
clinoptilolite particles in the simulated mineral processing
wastewater, thus affects the UV light path and results in
the utilization decline. Notably, the adsorption capacity
of ALC enhances obviously compared with NC and this
result is in good consistency with the BET characterization.
Namely, enough micropores are generated within ALC
owing to the dealumination and channel expansion pro-
cesses after acid-leaching. Therefore, ALC is more suitable
for using as photocatalyst support than NC. Besides, pure
TiO2 exhibits excellent SIPX degradation efficiency under
UV irradiation. About 91.2% SIPX can be removed within
30 min. Based on the photodegradation kinetic curves
shown in Figure 7b, it can be seen that all SIPX degradation
processes follow the pseudo-first-order kinetic model well.
Although TiO2 has the larger photodegradation rate, TC
is still the better choice to proceed the subsequent further
optimization considering the cost effectiveness.
Figure 8a exhibits the photodegradation efficiencies
of ATC, MTC and BTC under visible irradiation. Clearly,
three ternary composite photocatalysts show excellent visi-
ble light catalytic activity. Under the conditions of 20 mg/L
SIPX and 400 W, the SIPX photodegradation efficiency
Figure 6. (a) UV–vis DRS and (b) band gaps of the samples
Figure 7. (a) Degradation efficiency curves and (b) kinetic curves of the different samples