Ultrasonic-assisted H2O2/TiO2 process in catechol degradation: kinetic, synergistic and optimisation via response surface methodology

被引:17
作者
Badi, Mojtaba Yegane [1 ]
Vosoughi, Mehdi [2 ]
Sadeghi, Hadi [2 ]
Mokhtari, S. Ahmad [2 ]
Mehralipour, Jamal [1 ,3 ]
机构
[1] Iran Univ Med Sci, Sch Publ Hlth, Dept Environm Hlth Engn, Tehran, Iran
[2] Ardabil Univ Med Sci, Sch Publ Hlth, Dept Environm Hlth Engn, Ardebil, Iran
[3] Iran Univ Med Sci, Student Res Comm, Tehran, Iran
关键词
Catechol; H2O2; TiO2; process; ultrasonic mechanism; optimisation; response surface methodology; LOW-COST ADSORBENTS; WATER; TIO2; UV; CONTAMINANTS; PARAMETERS; REMOVAL; REDUCTION; TIO2/H2O2; CATALYST;
D O I
10.1080/03067319.2020.1726335
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
This experimental study investigated the performance of Catechol degradation by US/TiO2/H2O2 process as an integrated advance oxidation process. In this experimental study, initial pH, dose of TiO2, initial concentration of Catechol, H2O2 concentration and reaction time parameters optimised BBD. The results suggest that US/TiO2/H2O2 process has a high efficiency in Catechol degradation. Optimum condition of US/TiO2/H2O2 process is pH = 3.43, H2O2 concentration = 130 mg/l, TiO2 dose = 0.34 g/l, Catechol concentration = 12.52 mg/l and reaction time = 70.64 min. According to predicate point, the percentage of Catechol removal in this condition was 96.2 and 92.34 as a predicated and experimental percentage of Catechol removal by this process. The kinetics of reaction follows pseudo-first-order kinetic. The synergist effect of sonolysis, TiO2 and H2O2 is 2.09 fold. 70 and 63% of initial COD and TOC were removed. Presence of radical scavenger has an adverse impact on the performance of US/TiO2/H2O2 process.
引用
收藏
页码:757 / 770
页数:14
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