Application of advanced oxidation processes and toxicity assessment of transformation products

2018 ◽  
Vol 167 ◽  
pp. 223-233 ◽  
Author(s):  
Abha Sharma ◽  
Javed Ahmad ◽  
S.J.S. Flora
Keyword(s):  
Advanced Oxidation Processes ◽  
Advanced Oxidation ◽  
Transformation Products ◽  
Toxicity Assessment ◽  
Oxidation Processes

Elimination study of the chemotherapy drug tamoxifen by different advanced oxidation processes: Transformation products and toxicity assessment

Chemosphere ◽  
2017 ◽  
Vol 168 ◽  
pp. 284-292 ◽  
Author(s):  
Laura Ferrando-Climent ◽  
Rafael Gonzalez-Olmos ◽  
Alba Anfruns ◽  
Ignasi Aymerich ◽  
Lluis Corominas ◽  
...  
Keyword(s):  
Advanced Oxidation Processes ◽  
Advanced Oxidation ◽  
Transformation Products ◽  
Toxicity Assessment ◽  
Oxidation Processes ◽  
Chemotherapy Drug

scholarly journals Toxicity Reduction of Industrial and Municipal Wastewater by Advanced Oxidation Processes (Photo-Fenton, UVC/H2O2, Electro-Fenton and Galvanic Fenton): A Review

Catalysts ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 612 ◽  
Author(s):  
Juan José Rueda-Márquez ◽  
Irina Levchuk ◽  
Manuel Manzano ◽  
Mika Sillanpää
Keyword(s):  
Cost Estimation ◽  
Advanced Oxidation Processes ◽  
Municipal Wastewater ◽  
High Efficiency ◽  
Advanced Oxidation ◽  
Toxicity Assessment ◽  
Operational Conditions ◽  
Oxidation Processes ◽  
Real Wastewater ◽  
By Products

The application of Fenton-based advanced oxidation processes (AOPs), such as photo-Fenton or electro-Fenton for wastewater treatment have been extensively studied in recent decades due to its high efficiency for the decomposition of persistent organic pollutants. Usually Fenton-based AOPs are used for the degradation of targeted pollutant or group of pollutants, which often leads to the formation of toxic by-products possessing a potential environmental risk. In this work, we have collected and reviewed recent findings regarding the feasibility of Fenton-based AOPs (photo-Fenton, UVC/H2O2, electro-Fenton and galvanic Fenton) for the detoxification of real municipal and industrial wastewaters. More specifically, operational conditions, relevance and suitability of different bioassays for the toxicity assessment of various wastewater types, cost estimation, all of which compose current challenges for the application of these AOPs for real wastewater detoxification are discussed.

scholarly journals Degradation of Carbamazepine by Photo(electro)catalysis on Nanostructured TiO2 Meshes: Transformation Products and Reaction Pathways

Catalysts ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 169 ◽  
Author(s):  
Silvia Franz ◽  
Ermelinda Falletta ◽  
Hamed Arab ◽  
Sapia Murgolo ◽  
Massimiliano Bestetti ◽  
...  
Keyword(s):  
Plasma Electrolytic Oxidation ◽  
Advanced Oxidation Processes ◽  
Scale Up ◽  
Advanced Oxidation ◽  
Transformation Products ◽  
Reaction Pathways ◽  
Oxidation Processes ◽  
Electro Catalysis ◽  
Electrolytic Oxidation ◽  
Plasma Electrolytic

Carbamazepine (CBZ) is a pharmaceutical compound recalcitrant to conventional wastewater treatment plants and widely detected in wastewater bodies. In the present study, advanced oxidation processes for carbamazepine removal are investigated, with particular regard to the degradation pathways of carbamazepine by photoelectrocatalysis and conventional photocatalysis. Photoelectrocatalysis was carried out onto TiO2 meshes obtained by Plasma Electrolytic Oxidation, a well-known technique in the field of industrial surface treatments, in view of an easy scale-up of the process. By photoelectrocatalysis, 99% of carbamazepine was removed in 55 min while only 65% removal was achieved by photolysis. The investigation of the transformation products (TPs) was carried out by means of UPLC-QTOF/MS/MS. Several new TPs were identified and accordingly reaction pathways were proposed. Above 80 min the transformation products disappear, probably forming organic acids of low-molecular weight as final degradation products. The results demonstrated that photoelectrocatalysis onto TiO2 meshes obtained by plasma electrolytic oxidation is a useful alternative to common advanced oxidation processes as wastewater tertiary treatment aimed at removing compounds of emerging concern.

Chemical and toxicological evaluation of transformation products during advanced oxidation processes

2013 ◽  
Vol 68 (9) ◽  
pp. 1976-1983 ◽  
Author(s):  
C. vom Eyser ◽  
A. Börgers ◽  
J. Richard ◽  
E. Dopp ◽  
N. Janzen ◽  
...  
Keyword(s):  
Advanced Oxidation Processes ◽  
Waste Water Treatment ◽  
Treatment Plant ◽  
Advanced Oxidation ◽  
Transformation Products ◽  
Product Formation ◽  
Toxicological Evaluation ◽  
H2o2 Treatment ◽  
Oxidation Processes ◽  
Estrogenic Potential

The entry of pharmaceuticals into the water cycle from sewage treatment plants is of growing concern because environmental effects are evident at trace levels. Ozonation, UV- and UV/H2O2-treatment were tested as an additional step in waste water treatment because they have been proven to be effective in eliminating aqueous organic contaminants. The pharmaceuticals carbamazepine, ciprofloxacin, diclofenac, metoprolol and sulfamethoxazole as well as the personal care products galaxolide and tonalide were investigated in terms of degradation efficiency and by-product formation in consideration of toxic effects. The substances were largely removed from treatment plant effluent by ozonation, UV- and UV/H2O2-treatment. Transformation products were detected in all tested treatment processes. Accompanying analysis showed no genotoxic, cytotoxic or estrogenic potential for the investigated compounds after oxidative treatment of real waste waters. The results indicate that by-product formation from ozonation and advanced oxidation processes does not have any negative environmental impact.

Cyto- and geno-toxicity of 1,4-dioxane and its transformation products during ultraviolet-driven advanced oxidation processes

2018 ◽  
Vol 4 (9) ◽  
pp. 1213-1218 ◽  
Author(s):  
Wei Li ◽  
Elvis Xu ◽  
Daniel Schlenk ◽  
Haizhou Liu
Keyword(s):  
Water Reuse ◽  
Advanced Oxidation Processes ◽  
Advanced Oxidation ◽  
Transformation Products ◽  
Oxidation Processes

Ultraviolet-driven advanced oxidation processes (UV/AOPs) are integral steps in water reuse treatment trains.

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