Parameters explaining removal of PAHs from sewage sludge by ozonation

Carrère, Hélène; Bernal-Martínez, A.; Patureau, Dominique; Delgenès, Jean-Philippe

doi:10.1002/aic.10976

Cited by 18 publications

(5 citation statements)

References 20 publications

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“…The PAHs compounds are generated during partial combustion of organic compounds and originated from motor vehicle exhausts, industrial combustion and domestic heating or released during oil spills. These xenobiotics must be monitored due to their impact on public health and the environment, because of their carcinogenic properties and their ubiquity in the environment [64].…”

Section: Resultsmentioning

confidence: 99%

Mutual solubilities of hydrocarbons and water with the CPA EoS

Oliveira

Coutinho

Queimada

2007

Fluid Phase Equilibria

145

103

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The knowledge of hydrocarbon/water phase equilibria is important in the design and operation of equipment for petroleum transport and refining and petrochemical plants. The presence of water in a hydrocarbon mixture can affect the product quality and damage the operation equipment due to corrosion and formation of gas hydrates. Tracing the concentration of hydrocarbons in aqueous media is also important for technical purposes like preventing oil spills and for ecological concerns such as predicting the fate of these organic pollutants in the environment.In spite of its huge interest there was no model able for a qualitative description of the mutual solubility of water and hydrocarbons for a broad range of systems in a wide range of thermodynamic conditions. In this work it is shown that an equation of state incorporating association known as the CPA EoS is able to produce an excellent description of the mutual solubilities of water and several aliphatic and aromatic hydrocarbons in a broad range of pressures and temperatures.

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Section: Resultsmentioning

confidence: 99%

Mutual solubilities of hydrocarbons and water with the CPA EoS

Oliveira

Coutinho

Queimada

2007

Fluid Phase Equilibria

145

103

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“…These processes are also considered to be efficient treatments to degrade recalcitrant compounds in solid matrices. Most commonly used chemical oxidation processes for the treatment of contaminants in soil, sewage sludge, sediments, and manure are iron-catalyzed hydrogen peroxide oxidation (Fenton or Fenton-like oxidation), ozonation, and, more recently, persulfate oxidation − .…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Removal of Oxytetracycline and Sulfamethazine Antibacterials from Animal Waste by Chemical Oxidation Processes

Uslu

Balcıoğlu²

2009

J. Agric. Food Chem.

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Simultaneous degradation of oxytetracycline (OTC) and sulfamethazine (SMZ) antibacterials in synthetically contaminated cow manure (20 mg of antibacterials/kg of manure) in the presence and absence of bedding was investigated by the application of ozone, Fenton, and persulfate oxidation processes. Almost the complete removal of antibacterials was attained with all oxidation processes, which were combined with a pretreatment of manure with magnesium (Mg(2+)) salt desorption. Among the investigated oxidation processes, thermally activated persulfate oxidation with 25 mM Na(2)S(2)O(8) at 50 degrees C was also applied to the animal feeding operations wastewater, and the pseudo-first-order degradation rate constants of OTC and SMZ were found as 3.22 and 1.25 (1/h), respectively. Thermally activated persulfate treatment resulted in the reduction of 82% inhibition of OTC and SMZ to 7%, indicating the production of almost nontoxic degradation products in the wastewater.

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“…This combination increased NPE and PAH (Bernal-Martinez et al, 2005) removals by almost a factor of 2 with regard to the performances observed in the one-step anaerobic reactors. By using a partial least square regression, PAH removal by ozonation was found to be correlated to PAH solubility and the number of 5-carbon rings (Carrère et al, 2006). The presence of soluble organic matter in the sludge was also a limiting factor for ozone attack on PAHs.…”

Section: Toc Dynamic During Sewage Sludge Anaerobic Digestionmentioning

confidence: 96%

Anaerobic Removal of Trace Organic Contaminants in Sewage Sludge: 15 Years of Experience

et al. 2012

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Trace organic contaminants (TOCs) correspond to a broad range of molecules generated either directly or indirectly by human activity. Even though TOCs are found at low concentrations in the environment, they often accumulate by biomagnification and bioaccumulation into biological organisms and cause irreversible damages in biological systems through direct or indirect toxic effects such as endocrine disruption and tumour initiation. This manuscript presents the main findings of over fifteen years of research focusing on biological removal of various TOCs found in sewage sludge from urban treatment plants. A special focus of the research was made on microbial processes in complex anaerobic ecosystems. Four families of compounds mostly retrieved in urban plants were studied: the polycyclic aromatic hydrocarbons (PAHs), the polychlorobiphenyls (PCBs), the phthalic acid esters (PAEs), and the nonylphenol ethoxylates (NPEs). It was observed that the microbial capability for removing low amounts of TOCs required a long adaptation time and was often limited by the bioavailability of these compounds. In fact, the overall biodegradation resulted from the numerous interactions existing between the matrix (organic matter) and the microbial ecosystems according to the physico-chemical sorption properties of these compounds. Mechanistic aspects were also tackled in depth and specific models were developed for better understanding the network of interactions between TOCs, microorganisms, and organic matter. These findings could be extrapolated to other ecosystems such as soils and sediments. Finally, it was shown that microbial cometabolism was essential for TOC removal, and the concept of bioavailability was not only dependent on the nature, the level, and the sorption properties of TOCs but was also strongly dependent on the nature and the concentration of the sludge organic matter. Specific parameters were proposed for better evaluating the fate of TOCs in microbial anaerobic processes and technological solutions for efficient removal of these compounds were also proposed. removal of trace organic contaminants in sewage sludge: 15 years of experience. Pedosphere. 22(4): 508-517.

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Parameters explaining removal of PAHs from sewage sludge by ozonation

Cited by 18 publications

References 20 publications

Mutual solubilities of hydrocarbons and water with the CPA EoS

Mutual solubilities of hydrocarbons and water with the CPA EoS

Simultaneous Removal of Oxytetracycline and Sulfamethazine Antibacterials from Animal Waste by Chemical Oxidation Processes

Anaerobic Removal of Trace Organic Contaminants in Sewage Sludge: 15 Years of Experience

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