Ultraviolet activated persulfate based AOP for MTBE decomposition in aqueous solution

2019 ◽  
Vol 161 ◽  
pp. 269-274 ◽  
Author(s):  
Mohammad Ahmadian ◽  
Meghdad Pirsaheb ◽  
Hosna Janjani ◽  
Hiwa Hossaini
Keyword(s):  
Aqueous Solution ◽  
Mtbe Decomposition ◽  
Activated Persulfate

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

2015 ◽  
Vol 286 ◽  
pp. 7-14 ◽  
Author(s):  
Minhui Xu ◽  
Xiaogang Gu ◽  
Shuguang Lu ◽  
Zhaofu Qiu ◽  
Qian Sui ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Carbon Tetrachloride ◽  
Thermally Activated ◽  
Activated Persulfate

scholarly journals Oxidative Degradation of Amoxicillin in Aqueous Solution by Thermally Activated Persulfate

2019 ◽  
Vol 2019 ◽  
pp. 1-10 ◽  
Author(s):  
Juanjuan Zhao ◽  
Yujiao Sun ◽  
Fachao Wu ◽  
Minjian Shi ◽  
Xurui Liu
Keyword(s):  
Aqueous Solution ◽  
Reaction Temperature ◽  
Oxidative Degradation ◽  
Water Remediation ◽  
Order Kinetic ◽  
Production Chain ◽  
First Order ◽  
Thermally Activated ◽  
Pseudo First Order ◽  
Activated Persulfate

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.

Insights into the degradation of 2,4-dichlorophenol in aqueous solution by α-MnO2 nanowire activated persulfate: catalytic performance and kinetic modeling

RSC Advances ◽  
2016 ◽  
Vol 6 (42) ◽  
pp. 35441-35448 ◽  
Author(s):  
Yan Zhao ◽  
Yongsheng Zhao ◽  
Rui Zhou ◽  
Yan Mao ◽  
Wen Tang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Hydrothermal Method ◽  
Hydroxyl Radicals ◽  
Kinetic Modeling ◽  
Catalytic Performance ◽  
Activated Persulfate

α-MnO2 nanowires were synthesized through a hydrothermal method. Sulfate and hydroxyl radicals were produced in α-MnO2-activated persulfate system to degrade 2,4-dichlorophenol.

scholarly journals Removal of 1,1,1-trichloroethane from aqueous solution by a sono-activated persulfate process

2013 ◽  
Vol 20 (3) ◽  
pp. 855-863 ◽  
Author(s):  
Bingzhi Li ◽  
Lin Li ◽  
Kuangfei Lin ◽  
Wei Zhang ◽  
Shuguang Lu ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Activated Persulfate

scholarly journals Performance Comparison of Fe2+ Activated Persulfate and Electro-Persulfate Process in Acid Blue 25 Removal from Aqueous Solution Operating: Conditions and Reaction Velocity

2020 ◽  
Author(s):  
Zeinab Ghorbani
Keyword(s):  
Aqueous Solution ◽  
Removal Efficiency ◽  
Ferrous Sulfate ◽  
Electrochemical Process ◽  
Sodium Persulfate ◽  
Sulfate Concentration ◽  
Reaction Velocity ◽  
Acid Blue 25 ◽  
Acid Blue ◽  
Activated Persulfate

The purpose of this study was to compare the performance of Fe2+ activated persulfate and electro-persulfate process in Acid Blue 25 removal from aqueous solution. For this reason, the effects of different parameters including pH, dye, sodium persulfate and ferrous sulfate concentrations were investigated. The removal efficiency of 92% at the time of 60 min was obtained at pH= 3, dye concentration= 50 mg/L, sodium persulfate concentration= 500 mg/L and Fe (II) sulfate concentration= 100 mg/L for Fe2+ activated persulfate system and the removal efficiency of 95% at pH= 5, dye concentration = 200 mg/L, sodium persulfate concentration = 500 mg/L and ferrous sulfate concentration = 100 mg/L for electro-persulfate system by means of graphite materials as the neutral electrodes. COD removal efficiency in Fe2+ activated persulfate and electro-persulfate in the mentioned conditions were 90% and 89% in 180 minutes, respectively. Moreover, the result of process kinetics showed that using electrochemical process improved the reaction velocity from 0.0016 to 0.0487 mg/L/min. The comparison between these two-process showed that using electrochemical process improved dye removal efficiency by 4 times.

Degradation of furfural in aqueous solution using activated persulfate and peroxymonosulfate by ultrasound irradiation

2020 ◽  
Vol 266 ◽  
pp. 110616 ◽  
Author(s):  
Majid Kermani ◽  
Mehdi Farzadkia ◽  
Maryam Morovati ◽  
Mahmoud Taghavi ◽  
Saeid Fallahizadeh ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Ultrasound Irradiation ◽  
Activated Persulfate

Magnetic CuO@Fe3O4 nanocomposite as a highly active heterogeneous catalyst of persulfate for 2,4-dichlorophenol degradation in aqueous solution

RSC Advances ◽  
2015 ◽  
Vol 5 (70) ◽  
pp. 57058-57066 ◽  
Author(s):  
Chao Sun ◽  
Rui Zhou ◽  
Jianan E ◽  
Jiaqiang Sun ◽  
Hejun Ren
Keyword(s):  
Aqueous Solution ◽  
Heterogeneous Catalyst ◽  
Hydroxyl Radicals ◽  
Impregnation Method ◽  
Sulfate Radicals ◽  
Highly Active ◽  
Activated Persulfate

Fe3O4@CuO nanocomposite was fabricated through a novel impregnation method. Both sulfate radicals and hydroxyl radicals can be produced effectively in the activated persulfate system by the composite to degrade the 2,4-dichlorophenol.

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