Removal of 2,4-dichlorophenol from aqueous solution using ultrasonic/H2O2

被引：7

作者：

Sadrnourmohamadi, Mehrnaz ^{[1
]}

Poormohammadi, Ali ^{[2
]}

Almasi, Halime ^{[3
,4
]}

Asgari, Ghorban ^{[5
]}

Ahmadzadeh, Adel ^{[6
]}

Seid-Mohammadi, Abdolmotaleb ^{[5
]}

机构：

[1] SNC Lavalin Inc, 148 Nat Pk Way, Winnipeg, MB R3P 0X7, Canada

[2] Kermanshah Univ Med Sci, Social Dev & Hlth Promot Res Ctr, Kermanshah, Iran

[3] Ahvaz Jundishapur Univ Med Sci, Sch Publ Hlth, Ahvaz, Iran

[4] Ahvaz Jundishapur Univ Med Sci, Student Res Comm, Ahvaz, Iran

[5] Hamadan Univ Med Sci, Fac Publ Hlth, Dept Environm Hlth Engn, SDHRC, Hamadan, Iran

[6] Islamic Azad Univ, Maku Branch, Young Researchers & Elite Club, Maku, Iran

来源：

DESALINATION AND WATER TREATMENT | 2017年 / 75卷

关键词：

Ultrasonic process; Hydrogen peroxide; 2,4-dichlorophenol; PHENOL; WATER; DECOMPOSITION; DEGRADATION; OZONATION;

D O I：

10.5004/dwt.2017.20766

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The effect of ultrasound/hydrogen peroxide on the removal efficiency of 2,4-dichlorophenol (2,4-DCP) from aqueous solutions was investigated. The effects of solution pH, sonication time, H2O2 concentration, and tert-butanol (t-BuOH) concentration were also examined on process efficiency in 2,4-DCP degradation. Ultrasonic treatment at 20 kHz in combination with hydrogen peroxide resulted in increased removal efficiency of 2,4-DCE The removal efficiency was improved with increasing sonication time, and the maximum efficiency was obtained at pi I of 3. t-BuOH decreased the removal efficiency of 2,4-DCP under optimum conditions by quenching hydroxyl radicals. According to the obtained results, 74.6% chemical oxygen demand removal was achieved with US/H2O2 process after 90 min of reaction time at pH of 3 and H2O2 concentration of 0.1 mol/L. The decomposition kinetic data fitted well with the pseudo-first-order kinetic model with a rate constant of 0.025 min(-1).

引用

页码：189 / 194

页数：6

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