Degradation and changes in toxicity and biodegradability of tetracycline during ozone/ultraviolet-based advanced oxidation

2014 ◽  
Vol 70 (7) ◽  
pp. 1229-1235 ◽  
Author(s):  
Huyen Trang Luu ◽  
Kisay Lee
Keyword(s):  
Escherichia Coli ◽  
Biological Treatment ◽  
Advanced Oxidation Processes ◽  
Vibrio Fischeri ◽  
Oxygen Demand ◽  
Advanced Oxidation ◽  
Uv Treatment ◽  
Experimental Conditions ◽  
Oxidation Processes ◽  
Complete Mineralization

Advanced oxidation processes (AOPs) composed of O3, H2O2 and ultraviolet (UV) were applied to degrade tetracycline (TC). Degradation efficiency was evaluated in terms of changes in absorbance (ABS) and total organic carbon (TOC). The change in biotoxicity was monitored with Escherichia coli and Vibrio fischeri. The improvement in biodegradability during oxidation was demonstrated through 5-day biochemical oxygen demand/chemical oxygen demand ratio and aerobic biological treatment. The combination of O3/H2O2/UV and O3/UV showed the best performance for the reductions in ABS and TOC. However, mineralization and detoxification were not perfect under the experimental conditions that were used in this study. Therefore, for the ultimate treatment of TC compounds, it is suggested that AOP treatment is followed by biological treatment, utilizing enhanced biodegradability. In this study, aerobic biological treatment by Pseudomonas putida was performed for O3/UV-treated TC. It was confirmed that O3/UV treatment improved TOC reduction and facilitated complete mineralization in biological treatment.

scholarly journals Mineralization of Wastewater from the Teaching Hospital of Treichville by a Combination of Biological Treatment and Advanced Oxidation Processes

2021 ◽  
pp. 1-10
Author(s):  
Sadia Sahi Placide ◽  
Kambiré Ollo ◽  
Gnamba Corneil Quand-même ◽  
Pohan Lemeyonouin Aliou Guillaume ◽  
Berté Mohamed ◽  
...  
Keyword(s):  
Teaching Hospital ◽  
Biological Treatment ◽  
Advanced Oxidation Processes ◽  
Reduction Rate ◽  
Oxygen Demand ◽  
Advanced Oxidation ◽  
Biologically Active ◽  
Treated Wastewater ◽  
Oxidation Processes ◽  
Real Wastewater

Biological treatment, due to its low installation cost, is widely used for wastewater treatment. However, this treatment remains ineffective for the oxidation of so-called emerging molecules. To solve this environmental problem, advanced oxidation processes (AOPs) combine with Biological treatment for rapid, efficient and cost-effective purification of wastewater. This combination used in this work, allowed a total mineralization of a real wastewater solution from the teaching hospital of Treichville named CHU of Treichville in Abidjan (CHUT), both in terms of organic and microbiological pollutants. Real wastewater from the CHUT underwent a Biological treatment for 28 days via the Zahn-Wellens methods which made it possible to have a reduction rate of the chemical oxygen demand of more than 90% of biologically active organic pollutants. The biologically treated wastewater was doped with ceftriaxone (CTX) to simulate a situation of wastewater containing a recalcitrant compound after Biological treatment. Subsequently, the doped solution underwent treatment with different AOPs (UV / H2O2, Fe2+ / H2O2 and UV / Fe2+ / H2O2). This combination resulted in a COD reduction rate of over to be higher 98% and total inactivation of microbiological germs.

Combined Advanced Oxidation Processes and Aerobic Biological Treatment for Synthetic Fatliquor Used in Tanneries

2012 ◽  
Vol 51 (50) ◽  
pp. 16171-16181 ◽  
Author(s):  
Chitra Kalyanaraman ◽  
Sri Bala Kameswari Kanchinadham ◽  
L. Vidya Devi ◽  
S. Porselvam ◽  
J. Raghava Rao
Keyword(s):  
Biological Treatment ◽  
Advanced Oxidation Processes ◽  
Advanced Oxidation ◽  
Oxidation Processes

Effect of advanced oxidation processes on the toxicity of municipal landfill leachates

2004 ◽  
Vol 49 (4) ◽  
pp. 273-277 ◽  
Author(s):  
B. Slomczynska ◽  
J. Wasowski ◽  
T. Slomczynski
Keyword(s):  
Organic Compounds ◽  
Advanced Oxidation Processes ◽  
Vibrio Fischeri ◽  
Advanced Oxidation ◽  
Optimal Conditions ◽  
Toxicity Evaluation ◽  
Landfill Leachates ◽  
Oxidation Processes ◽  
Municipal Landfill ◽  
Pre Treatment

The aim of the present study was to assess the effect of advanced oxidation processes (AOPs) (oxidation ozone and peroxide/ozone) on the toxicity of leachates from municipal landfill for Warsaw, Poland, using a battery of tests. AOPs used to pre-treat leachates were carried out in laboratory conditions after their coagulation with the use of FeCl3. The effects of the pre-treatment of leachates using the method of coagulation with FeCl3 depended on the concentration of organic compounds and with optimal conditions of the process ranged from 40 to 70%. Further pre-treatment of the leachates after coagulation, involving the use of oxidation with O3 and H2O2/O3, did not cause significant decrease of leachate toxicity. The data of this study demonstrated the usefulness of the battery of tests using Daphnia magna, Artemia franciscana, Scenedesmus quadricauda and Vibrio fischeri for the toxicity evaluation of raw and pre-treated leachates.

Phenol wastewater remediation: advanced oxidation processes coupled to a biological treatment

2007 ◽  
Vol 55 (12) ◽  
pp. 221-227 ◽  
Author(s):  
A. Rubalcaba ◽  
M.E. Suárez-Ojeda ◽  
F. Stüber ◽  
A. Fortuny ◽  
C. Bengoa ◽  
...  
Keyword(s):  
Biological Treatment ◽  
Advanced Oxidation Processes ◽  
Treatment Plant ◽  
Advanced Oxidation ◽  
Industrial Effluents ◽  
Coupled Processes ◽  
Catalytic Wet Air Oxidation ◽  
Air Oxidation ◽  
Wet Air Oxidation ◽  
Oxidation Processes

Nowadays, there are increasingly stringent regulations requiring more and more treatment of industrial effluents to generate product waters which could be easily reused or disposed of to the environment without any harmful effects. Therefore, different advanced oxidation processes were investigated as suitable precursors for the biological treatment of industrial effluents containing phenol. Wet air oxidation and Fenton process were tested batch wise, while catalytic wet air oxidation and H2O2-promoted catalytic wet air oxidation processes were studied in a trickle bed reactor, the last two using over activated carbon as catalyst. Effluent characterisation was made by means of substrate conversion (using high liquid performance chromatography), chemical oxygen demand and total organic carbon. Biodegradation parameters (i.e. maximum oxygen uptake rate and oxygen consumption) were obtained from respirometric tests using activated sludge from an urban biological wastewater treatment plant (WWTP). The main goal was to find the proper conditions in terms of biodegradability enhancement, so that these phenolic effluents could be successfully treated in an urban biological WWTP. Results show promising research ways for the development of efficient coupled processes for the treatment of wastewater containing toxic or biologically non-degradable compounds.

Inactivation of Escherichia coli in fresh water with advanced oxidation processes based on the combination of O3, H2O2, and TiO2. Kinetic modeling

2015 ◽  
Vol 22 (13) ◽  
pp. 10280-10290 ◽  
Author(s):  
Jorge Rodríguez-Chueca ◽  
M. Peña Ormad Melero ◽  
Rosa Mosteo Abad ◽  
Javier Esteban Finol ◽  
José Luis Ovelleiro Narvión
Keyword(s):  
Escherichia Coli ◽  
Fresh Water ◽  
Kinetic Modeling ◽  
Advanced Oxidation Processes ◽  
Advanced Oxidation ◽  
Oxidation Processes

scholarly journals Assessing the application of advanced oxidation processes, and their combination with biological treatment, to effluents from pulp and paper industry

2013 ◽  
Vol 262 ◽  
pp. 420-427 ◽  
Author(s):  
Noemí Merayo ◽  
Daphne Hermosilla ◽  
Laura Blanco ◽  
Luis Cortijo ◽  
Ángeles Blanco
Keyword(s):  
Biological Treatment ◽  
Advanced Oxidation Processes ◽  
Paper Industry ◽  
Advanced Oxidation ◽  
Pulp And Paper Industry ◽  
Pulp And Paper ◽  
Oxidation Processes

scholarly journals Efficiency of advanced oxidation processes in lowering bisphenol A toxicity and oestrogenic activity in aqueous samples

2014 ◽  
Vol 65 (1) ◽  
pp. 77-87 ◽  
Author(s):  
Maja Plahuta ◽  
Tatjana Tišler ◽  
Mihael Jožef Toman ◽  
Albin Pintar
Keyword(s):  
Chemical Analysis ◽  
Bisphenol A ◽  
Photocatalytic Oxidation ◽  
Advanced Oxidation Processes ◽  
Vibrio Fischeri ◽  
Advanced Oxidation ◽  
Aqueous Samples ◽  
Yeast Saccharomyces Cerevisiae ◽  
Oxidation Processes ◽  
Set Up

Summary Bisphenol A (BPA) is a well-known endocrine disruptor with adverse oestrogen-like effects eliciting adverse effects in humans and wildlife. For this reason it is necessary to set up an efficient removal of BPA from wastewaters, before they are discharged into surface waters. The aim of this study was to compare the efficiency of BPA removal from aqueous samples with photolytic, photocatalytic, and UV/H2O2 oxidation. BPA solutions were illuminated with different bulbs (halogen; 17 W UV, 254 nm; and 150 W UV, 365 nm) with or without the TiO2 P-25 catalyst or H2O2 (to accelerate degradation). Acute toxicity and oestrogenic activity of treated samples were determined using luminescent bacteria (Vibrio fischeri), water fleas (Daphnia magna), zebrafish embryos (Danio rerio), and Yeast Estrogen Screen (YES) assay with genetically modified yeast Saccharomyces cerevisiae. The results confirmed that BPA is toxic and oestrogenically active. Chemical analysis showed a reduction of BPA levels after photolytic treatment and 100 % conversion of BPA by photocatalytic and UV/H2O2 oxidation. The toxicity and oestrogenic activity of BPA were largely reduced in photolytically treated samples. Photocatalytic oxidation, however, either did not reduce BPA toxic and oestrogenic effects or even increased them in comparison with the baseline, untreated BPA solution. Our findings suggest that chemical analysis is not sufficient to determine the efficiency of advanced oxidation processes in removing pollutants from water and needs to be complemented with biological tests.

Removal of herbicidal ionic liquids by electrochemical advanced oxidation processes combined with biological treatment

2016 ◽  
Vol 38 (9) ◽  
pp. 1093-1099 ◽  
Author(s):  
Daria Pęziak-Kowalska ◽  
Florence Fourcade ◽  
Michał Niemczak ◽  
Abdeltif Amrane ◽  
Łukasz Chrzanowski ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Biological Treatment ◽  
Advanced Oxidation Processes ◽  
Advanced Oxidation ◽  
Oxidation Processes ◽  
Electrochemical Advanced Oxidation Processes

Applications of Advanced Oxidation Processes in Palm Oil Mill Effluent Treatment

2019 ◽  
pp. 123-149
Author(s):  
Azmi Aris ◽  
Muhammad Noor Hazwan Jusoh ◽  
Nurul Shakila Ahmad Abdul Wahab
Keyword(s):  
Hydroxyl Radicals ◽  
Palm Oil ◽  
Advanced Oxidation Processes ◽  
Advanced Oxidation ◽  
Effluent Treatment ◽  
Palm Oil Mill Effluent ◽  
High Concentration ◽  
Experimental Conditions ◽  
Oxidation Processes ◽  
Palm Oil Mill

This chapter presents a review on limited studies that have been conducted using advanced oxidation processes (AOPs) in treating biologically treated palm oil mill effluent. Palm oil mill effluent is the byproducts of palm oil production that is normally treated using a series of biological processes. However, despite being treated for a long period of retention time, the effluent still possesses high concentration of organics, nutrients, and highly colored, and will pollute the environment if not treated further. Advanced oxidation processes that utilized hydroxyl radicals as their oxidizing agents have the potential of further treating the biologically treated POME. Fenton oxidation, photocatalysis, and cavitation are the main AOPs that have been studied in polishing the biologically treated POME. Depending on the experimental conditions, the removal of organics, in terms of COD, TOC, and color, could reach up to more than 90%. Nevertheless, each of this process has its own limitations and further studies are needed to overcome these limitations.

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