Novel Ozone Oxidation Process for Emerging Contaminants Removal in Water

2018 ◽  
pp. 11-13 ◽  
Author(s):  
Chedly Tizaoui
Keyword(s):  
Emerging Contaminants ◽  
Oxidation Process ◽  
Ozone Oxidation ◽  
Contaminants Removal

Insights of emerging contaminants removal in real water matrices by CWPO using a magnetic catalyst

2021 ◽  
Vol 9 (5) ◽  
pp. 106321
Author(s):  
Y. Huaccallo-Aguilar ◽  
S. Álvarez-Torrellas ◽  
M.V. Gil ◽  
M. Larriba ◽  
J. García
Keyword(s):  
Emerging Contaminants ◽  
Magnetic Catalyst ◽  
Contaminants Removal

Synthesis and application of coagulant derived from Durio zibethinus for emerging contaminants removal from landfill leachate

2021 ◽  
Vol 11 (1) ◽  
pp. 39
Author(s):  
Mohamad Anuar Kamaruddin ◽  
Emmanuel Madu Ijanu ◽  
Rasyidah Alrozi ◽  
Mohd Hafiidz Jaafar ◽  
Khairunnisa Fakhriah Mohd Omar ◽  
...  
Keyword(s):  
Landfill Leachate ◽  
Emerging Contaminants ◽  
Durio Zibethinus ◽  
Contaminants Removal

Decomplexation of Cu(II)/Ni(II)-EDTA by ozone-oxidation process

2019 ◽  
Vol 27 (1) ◽  
pp. 812-822 ◽  
Author(s):  
Suyun Xu ◽  
Ning Yan ◽  
Minghao Cui ◽  
Hongbo Liu
Keyword(s):  
Oxidation Process ◽  
Ozone Oxidation

scholarly journals Mechanism and dynamic study of reactive red X-3B dye degradation by ultrasonic-assisted ozone oxidation process

2017 ◽  
Vol 38 ◽  
pp. 681-692 ◽  
Author(s):  
Yongjun Shen ◽  
Qihui Xu ◽  
Rongrong Wei ◽  
Jialing Ma ◽  
Yi Wang
Keyword(s):  
Oxidation Process ◽  
Dye Degradation ◽  
Dynamic Study ◽  
Ozone Oxidation ◽  
Ultrasonic Assisted

Degradation of acetaminophen (ACT) by ozone/persulfate oxidation process: experimental and degradation pathways

2020 ◽  
Vol 49 (5) ◽  
pp. 363-368
Author(s):  
Maryam Khashij ◽  
Mohammad Mehralian ◽  
Zahra Goodarzvand Chegini
Keyword(s):  
Removal Efficiency ◽  
Emerging Contaminants ◽  
Oxidation Process ◽  
Batch Reactor ◽  
Degradation Efficiency ◽  
Content Type ◽  
Persulfate Oxidation ◽  
Personal Care Product ◽  
Pathway Inference ◽  
Pharmaceutical Degradation

Purpose The purpose of this study to investigate acetaminophen (ACT) degradation efficiencies by using ozone/persulfate oxidation process in a batch reactor. In addition, the effects of various parameters on the ACT removal efficiency toward pathway inference of ACT degradation were investigated. Design/methodology/approach The experiments were in the 2 L glass vessels. Ozone gas with flow rate at 70 L.h−1 was produced by ozone generator. After the adjustment of the pH, various dosages of persulfate (1, 3, 5, 7 and 9 mmol.L−1) were then added to the 500 mL ACT-containing solution with 150 mg.L−1 of concentration. Afterward, ozone gas was diffused in glass vessels. The solution after reaction flowed into the storage tank for the detection. The investigated parameters included pH and the amount of ozone and persulfate addition. For comparison of the ACT degradation efficiency, ozone/persulfate, ozone and persulfate oxidation in reactor was carried out. The ACT concentration using a HPLC system equipped with 2998 PDA detector was determined at an absorbance of 242 nm. Findings ACT degradation percentage by using ozone or persulfate in the process were at 63.7% and 22.3%, respectively, whereas O3/persulfate oxidation process achieved degradation percentage at 91.4% in 30 min. Degradation efficiency of ACT was affected by different parameter like pH and addition of ozone or persulfate, and highest degradation obtained when pH and concentrations of persulfate and ozone was 10 and 3 mmol.L−1 and 60 mg.L−1, respectively. O3, OH• and SO4− were evidenced to be the radicals for degradation of ACT through direct and indirect oxidation. Gas chromatography–mass spectrometer analysis showed intermediates including N-(3,4-dihydroxyphenyl) formamide, hydroquinone, benzoic acid, 4-methylbenzene-1,2-diol, 4-aminophenol. Practical implications This study provided a simple and effective way for degradation of activated ACT as emerging contaminants from aqueous solution. This way was conducted to protect environment from one of the most important and abundant pharmaceutical and personal care product in aquatic environments. Originality/value There are two main innovations. One is that the novel process is performed successfully for pharmaceutical degradation. The other is that the optimized conditions are obtained. In addition, the effects of various parameters on the ACT removal efficiency toward pathway inference of ACT degradation were investigated.

Ozone oxidation of oestrogenic active substances in wastewater and drinking water

2008 ◽  
Vol 58 (2) ◽  
pp. 451-458 ◽  
Author(s):  
S. Baig ◽  
G. Hansmann ◽  
B. Paolini
Keyword(s):  
Drinking Water ◽  
Emerging Contaminants ◽  
Wastewater Treatment Plants ◽  
Limit Of Detection ◽  
Batch Mode ◽  
Ozone Oxidation ◽  
Quality Of Water ◽  
The Matrix ◽  
Local Plant ◽  
Active Substances

Ozone oxidation is proven to be an effective solution for the degradation of selected oestrogenic active substances detected in secondary wastewaters such as β-oestradiol, oestrone, oestriol, 17-α-ethinyloestradiol, mestranol, daidzeine, β-sitosterol, bisphenol A, norethisterone, 4-tert-octylphenol and 4-iso-nonylphenol, up to their limit of detection. The matrix-effect of wastewater was investigated performing ozone experiments under batch mode and continuous mode using drinking water and a wastewater issued from a local plant both spiked with the non-detected substances. The results obtained indicate that the wastewater matrix greatly affects the kinetics of ozone reaction with these substances but does not really change the related reactivity scale. The ozone dose corresponding to the full conversion of target EDCs consequently increases as their oxidation takes place competing with reactions of background pollutants represented by the COD and DOC content. However, a usual dose close to 12 mg/L was found sufficient to provide high degradation yields for all substances studied while 35% of COD was removed. This is a contribution to the numerous current works focused on technologies able to improve the quality of water discharged from wastewater treatment plants, both considering conventional parameters and emerging contaminants.

Formation and inhibition of bromate during ferrate(VI) – Ozone oxidation process

2013 ◽  
Vol 118 ◽  
pp. 653-658 ◽  
Author(s):  
Qi Han ◽  
Hongjie Wang ◽  
Wenyi Dong ◽  
Tongzhou Liu ◽  
Yulei Yin
Keyword(s):  
Oxidation Process ◽  
Ozone Oxidation
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