Application of a Novel Semiconductor Catalyst, CT, in Degradation of Aromatic Pollutants in Wastewater: Phenol and Catechol

Table 2

Comparison of UV intensity adopted by varied studies in photodegradation of phenol.

Treatment	Reaction condition	Performance	Study
UV + H2O2 + TiO2 supported on sepiolite	UV intensity 17 w; pH 5.5; solid/liquid 0.5 g L^−1; H2O2: 30 ml L^−1	𝑘=0.87×10^−3/min, within; 24-25 h, conversion >90%	Ŭgurlu and Karaoğlu 2011 [15]
UV + TiO2/perlite	UV intensity 250 w, pH 10.7; initial phenol concentration 0.5 mmol L^−1; TiO2/perlite dosage, 6 g L^−1; reaction temperature 27°C	Experimental conversion (%): 97.3	Jafarzadeh et al. 2011 [1]
Sono-photo-Fenton	UV intensity 250 w, emitting radiation between 300–420 nm; pH 3; Fe^2+ 20 mg L^−1, H2O2 700 mg L^−1, room temperature	93% phenol reduction, 84.6% COD reduction within 60 min, 𝑘=0.1186/min	Babuponnusami and Muthukumar 2011 [11]
UV/H2O2	UV intensity 5000 w output; H2O2 concentration: 7.08 mmol L^−1	Within 50 min, 50 mg L^−1 phenol degraded into 10 mg L^−1	Huang and Shu [33]
UV/TiO2 supported; on fiberglass cloth	a UV/Vis mercury lamp: 6 Kw, 330 Wm^−2 initial phenol Concentration: 25 mg L^−1	80% phenol reduction within 15 h	Mozia et al. 2012 [32]
UV/CT	UV intensity 15 w, the emitted wavelength is 254 nm and the light intensity <26 μw/cm^2; pH 3, initial phenol concentration 88 mg L^−1 (0.936 mmol L^−1), 1% CT nanoparticles; room temperature	Within 10 day, 100% degradation, 𝑘=5.28×10^−3 mol L^−1 min^−1	This study