Comparing the performance of various advanced oxidation processes for treatment of acetone contaminated water

Hernández, Rafael; Zappi, Mark E.; Colucci, José A.; Jones, Robert M.

doi:10.1016/s0304-3894(01)00371-5

Cited by 68 publications

(56 citation statements)

References 7 publications

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“…Because of the high cost of ozone generation, this combination makes the process economically feasible [50]. Several factors limit the usefulness of the peroxonation process such as important energetic consumption, low water solubility of ozone, and its sensitivity to several factors [51]. A general mechanism of peroxon process is given below:…”

Section: Ozonationmentioning

confidence: 99%

Treatment of Antibiotics in Wastewater Using Advanced Oxidation Processes (AOPs)

Kurt¹,

Mert²,

Özengi̇n³

et al. 2017

Physico-Chemical Wastewater Treatment and Resource Recovery

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Antibiotics are nonbiodegradable, can survive at aquatic environments for long periods and they have a big potential bio-accumulation in the environment. They are extensively metabolized by humans, animals and plants. After metabolization, antibiotics or their metabolites are excreted into the aquatic environment. Removal of these compounds from the aquatic environment is feasible by different processes. But antibiotics are not treated in conventional wastewater treatment plants efficiently. During the last years studies with advanced oxidation processes (AOPs) for removal of these pharmaceuticals from waters has shown that they can be useful for removing them fully. Advanced oxidation processes (AOPs) can work as alternatives or complementary method in traditional wastewater treatment, and highly reactive free radicals, especially hydroxyl radicals (OH) generated via chemical (O 3 /H 2 O 2 ,O 3 /OH -), photochemical (UV/O 3 ,O 3 /H 2 O 2 ) reactions, serve as the main oxidant. This study presents an overview of the literature on antibiotics and their removal from water by advanced oxidation processes. It includes almost all types of antibiotics which are consumed by human and veterinary processes. It was found that most of the investigated advanced oxidation treatment processes for the oxidation of antibiotics in water are direct and indirect photolysis with the combinations of H 2 O 2 ,TiO 2 , ozone and Fenton's reagent.

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Section: Ozonationmentioning

confidence: 99%

Treatment of Antibiotics in Wastewater Using Advanced Oxidation Processes (AOPs)

Kurt¹,

Mert²,

Özengi̇n³

et al. 2017

Physico-Chemical Wastewater Treatment and Resource Recovery

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“…It has also been proven to work over a large dynamic range. The method can decompose both high-and lowconcentration organic wastewater even at high flux [7]. The NTP discharge process directs a large amount of high energy electrons and active species towards the oxidation of dissolved organic molecules [5,7,8].…”

Section: Introductionmentioning

confidence: 99%

Degradation of phenolic compounds in water by non-thermal plasma treatment

Cheng

Chen

Yoshizuka

et al. 2012

J. Water Chem. Technol.

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A stainless-steel hollow needle type anode was used in the reactor to treat industrial wastewater by gas-liquid phase non-thermal plasma (NTP) by corona discharge. The results showed that the short electrode gap, 1 cm, has a higher plasma energy density which improves the removal of the phenolic derivatives, reaching 100% after about 60 minutes. The H 2 O 2 concentration was higher in the discharge system when the content of oxygen was increased. The efficiency of the phenol removal by chemical oxygen demand was only 10 -31% after 60 minutes. The identified intermediates were catechol, hydroquinone, 1,4-benzoquinone, 2-nitrophenol, 1,2-benzenedicarboxylic acid, diphenylmethanone, 2-methylhydroquinone, 2-methyl-1,4-bezoquinone, and trace amounts of organic.

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“…Ce système est affecté par les mêmes contraintes que l'ozonation (HERNANDEz et al, 2002;SLokAR et LE MARECHAL, 1998). En revanche, l'ozonation et la peroxonation présentent l'avantage, par rapport aux procédés avec irradiation UV, de pouvoir fonctionner dans une eau à forte turbidité, car le système ne dépend pas de la transmission des rayonnements dans l'effluent.…”

Section: Traitements Chimiquesunclassified

Les colorants textiles sources de contamination de l’eau : CRIBLAGE de la toxicité et des méthodes de traitement

Mansour¹,

Boughzala

Dridi

et al. 2011

rseau

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Les colorants sont largement utilisés dans les imprimeries, les produits alimentaires, cosmétiques et cliniques, mais en particulier dans les industries textiles pour leur stabilité chimique et la facilité de leur synthèse et leur variété de couleurs. Cependant, ces colorants sont à l’origine de la pollution une fois évacués dans l’environnement. La production mondiale des colorants est estimée à plus de 800 000 t•an-1 et les colorants azoïques sont majoritaires et représentent 60-70 %. Compte tenu de la composition très hétérogène de ces derniers, leur dégradation conduit souvent à la conception d’une chaîne de traitement physique-chimique et biologique assurant l’élimination des différents polluants par étapes successives. Dés études ont montré que plusieurs colorants azoïques sont toxiques et mutagènes et le traitement biologique de ces colorants semble présenter un intérêt scientifique majeur. Les traitements physico-chimiques communs (adsorption, coagulation/floculation, précipitation etc.) sont couramment utilisés pour les effluents industriels. Malgré leur rapidité, ces méthodes se sont avérées peu efficaces compte tenu des normes exigées sur ces rejets. Le traitement biologique constitue une alternative fiable; en effet, plusieurs microorganismes sont capables de transformer les colorants azoïques en sous-produits incolores. Les bactéries dégradent les colorants azoïques en deux étapes : un clivage de liaison azo, par l’intermédiaire de l’azoréductase, suivi d’une oxydation des amines aromatiques formées lors de la première étape. L’azoréduction constitue alors une étape clé du traitement des effluents chargés de ces colorants.Dyes are widely used for industrial, printing, food, cosmetic and clinical purposes as well as textile dyeing because of their chemical stability, ease of synthesis, and versatility. Their stability, however, causes pollution once the dyes are released into the environment in effluents. More than 800,000 tons of dyes are annually produced worldwide, of which 60 to 70% are azo dyes. Considering the heterogeneous composition of these latter dyes, their degradation usually requires a chain of physical, chemical and biological treatments assuring the elimination of different pollutants in successive steps. In addition, some azo dyes are toxic and mutagenic and thus the biological treatment of these dyes is now of major scientific interest. Physical-chemical treatments (adsorption, coagulation/flocculation precipitation, etc.) are usually used for industrial effluents. In spite of their rapidity, these methods have turned out to be ineffective in attaining the standards required for these discharges. As a viable alternative, biological processes are receiving increasing interest owing to their cost effectiveness and their ability to produce less sludge. It has been found that some microorganisms can transform azo dyes into colourless products. Bacterial degradation of azo dyes is often initiated by an enzymatic biotransformation step that involves cleavage of azo linkages with the aid of...

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Comparing the performance of various advanced oxidation processes for treatment of acetone contaminated water

Cited by 68 publications

References 7 publications

Treatment of Antibiotics in Wastewater Using Advanced Oxidation Processes (AOPs)

Treatment of Antibiotics in Wastewater Using Advanced Oxidation Processes (AOPs)

Degradation of phenolic compounds in water by non-thermal plasma treatment

Les colorants textiles sources de contamination de l’eau : CRIBLAGE de la toxicité et des méthodes de traitement

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