Degradation of carbon tetrachloride in aqueous solution in the thermally activated persulfate system

Antibiotic residues and antibiotic resistance genes (ARGs) pose a great threat to public health and food security via the horizontal transfer in the food production chain. Oxidative degradation of amoxicillin (AMO) in aqueous solution by thermally activated persulfate (TAP) was investigated. The AMO degradation followed a pseudo-first-order kinetic model at all tested conditions. The pseudo-first-order rate constants of AMO degradation well-fitted the Arrhenius equation when the reaction temperature ranged from 35°C to 60°C, with the apparent activate energy of 126.9 kJ·mol−1. High reaction temperature, high initial persulfate concentration, low pH, high Cl− concentration, and humic acid (HA) concentration increased the AMO degradation efficiency. The EPR test demonstrated that both ·OH and SO4·− were generated in the TAP system, and the radical scavenging test identified that the predominant reactive radical species were SO4·− in aqueous solution without adjusting the solution pH. In groundwater and drinking water, AMO degradation suggested that TAP could be a reliable technology for water remediation contaminated by AMO in practice.

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Oxidative removal of metronidazole from aqueous solution by thermally activated persulfate process: kinetics and mechanisms

Environmental Science and Pollution Research ◽

10.1007/s11356-017-0518-9 ◽

2017 ◽

Vol 25 (3) ◽

pp. 2466-2475 ◽

Cited By ~ 12

Author(s):

Rui Zhou ◽

Tingting Li ◽

Yu Su ◽

Taigang Ma ◽

Lijian Zhang ◽

...

Keyword(s):

Aqueous Solution ◽

Process Kinetics ◽

Thermally Activated ◽

Oxidative Removal ◽

Activated Persulfate

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Oxidative degradation of chloroxylenol in aqueous solution by thermally activated persulfate: Kinetics, mechanisms and toxicities

Chemical Engineering Journal ◽

10.1016/j.cej.2019.02.208 ◽

2019 ◽

Vol 368 ◽

pp. 553-563 ◽

Cited By ~ 21

Author(s):

Yujiao Sun ◽

Juanjuan Zhao ◽

Bo-Tao Zhang ◽

Jie Li ◽

Yongbin Shi ◽

...

Keyword(s):

Aqueous Solution ◽

Oxidative Degradation ◽

Thermally Activated ◽

Activated Persulfate

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Degradation of chloramphenicol by thermally activated persulfate in aqueous solution

Chemical Engineering Journal ◽

10.1016/j.cej.2014.02.047 ◽

2014 ◽

Vol 246 ◽

pp. 373-382 ◽

Cited By ~ 223

Author(s):

Minghua Nie ◽

Yi Yang ◽

Zhijian Zhang ◽

Caixia Yan ◽

Xiaoning Wang ◽

...

Keyword(s):

Aqueous Solution ◽

Thermally Activated ◽

Activated Persulfate

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Response surface methodological approach for optimizing removal of ciprofloxacin from aqueous solution using thermally activated persulfate/aeration systems

Global NEST Journal ◽

10.30955/gnj.002186 ◽

2017 ◽

Vol 19 (3) ◽

pp. 389-395 ◽

Cited By ~ 6

Keyword(s):

Aqueous Solution ◽

Removal Efficiency ◽

Methodological Approach ◽

Persulfate Oxidation ◽

Thermally Activated ◽

Initial Ph ◽

Ph Range ◽

Optimized Conditions ◽

Mn3o4 Nanoparticles ◽

Activated Persulfate

Being used in large quantities for some decades, antibiotics have been of little notice since their existence in the environment. Present study aims at investigating the optimization of Ciprofloxacin removal (CIP) in Thermally Activated Persulfate (TAP)/Aeration systems by Central Composite Design (CCD). The effect of operating parameters including initial pH, CIP concentration, Persulfate concentration and temperature on the removal process was investigated in order to find out the optimum conditions. Typically, high temperature, high Persulfate dose, and low initial CIP concentration increased the removal efficiency of CIP. At the tested pH range of 3–11, the highest removal occurred at pH 3.93. Finally, the effects of Mn3O4 Nanoparticles, N2 gas, and COD reduction in optimal condition were studied. Mn3O4 Nanoparticles and N2 gas in optimized conditions increased the removal efficiency from 93.41 to 90.1, respectively. The results showed that Thermally Activated Persulfate oxidation was the efficient process for the treatment of aqueous solution containing Ciprofloxacin due to the production of Sulfate radicals.

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