Modelling of micropollutant removal in biological wastewater treatments: A review

Pomies, Maxime; Choubert, J.M.; Wisniewski, Christelle; Coquery, Marina

doi:10.1016/j.scitotenv.2012.11.037

Cited by 193 publications

(97 citation statements)

References 84 publications

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“…Hydrolytic control showed that the atenolol concentration remained nearly constant, which was also supported by the fact that no products ) [33], pH control and the exclusion of light in batch experiments, microbial biodegradation of atenolol was the major removal pathway in batch experiments. ) in the literatures [34], likely due to the unaccustomed sludge to atenolol in this study. It is expected that the long-term adaption of the nitrifying culture to atenolol presence will significantly enhance its degradation capacity, as confirmed in previous study regarding pharmaceutical degradation using nitrifying sludge [35].…”

Section: Control Experimentsmentioning

confidence: 61%

Biodegradation of atenolol by an enriched nitrifying sludge: Products and pathways

Radjenović

Yuan

et al. 2017

Chemical Engineering Journal

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Biodegradation of β-blocker atenolol was investigated using an enriched nitrifying culture at controlled ammonium concentration and without ammonium addition. Analysis of the kinetics and structural elucidation of biodegradation products showed that atenolol biodegradation was found to be linked to the activity of nitrifying bacteria in the presence of ammonium. Atenolol was degraded cometabolically by ammonia-oxidizing bacteria (AOB), likely due to a broad substrate range of ammonia monooxyenase (AMO). Four products were formed during atenolol biodegradation with ammonia oxidation, including P267 (atenolol acid) and three new products P117 (1-isopropylamino-2-propanol), P167 (1-amino-3-phenoxy-2-propanol), and an unknown product P227 with a nominal molecular mass of 227. In comparison, only P267 and P227 were identified during atenolol biodegradation without ammonia oxidation. Follow-up experiments using atenolol acid as the parent compound indicated the formation of products P117, P167 and P227 in the presence of ammonium. Based on the products identified, a tentative biodegradation pathway of atenolol is suggested, which involves two steps independent of the presence of ammonium: i) microbial amide-bond hydrolysis to carboxyl group and formation of P267 (atenolol acid) and ii) a possible formation of P227 with its unidentified structure and other two cometabolically induced reactions: iii) breakage of ether bond in the alkyl side chain and formation of P117 and iv) a minor pathway through N-dealkylation and loss of acetamide moiety from the aromatic ring, yielding P167. This study provided an important insight regarding the biotransformation pathways under different metabolic conditions.

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Section: Control Experimentsmentioning

confidence: 61%

Biodegradation of atenolol by an enriched nitrifying sludge: Products and pathways

Radjenović

Yuan

et al. 2017

Chemical Engineering Journal

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“…ASP is arguably the most common biological process adopted in WWTPs worldwide (Pomiès et al 2013;Choubert et al 2011b;Murillo et al 2011;Gray 2005;Á lvarez et al 2002), although the characteristics of the reactors may vary in which concerns the hydraulic regime and the operating conditions, the latter mainly determined by the rate of recirculation of activated sludge (RAS). Operating conditions establish the loading rate, i.e.…”

Section: Asp and Modificationsmentioning

confidence: 99%

Behaviour and fate of metals in urban wastewater treatment plants: a review

Cantinho

Matos

Trancoso

et al. 2015

Int. J. Environ. Sci. Technol.

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The concerns on metals in urban wastewater treatment plants (WWTPs) are mainly related to its contents in discharges to environment, namely in the final effluent and in the sludge produced. In the near future, more restrictive limits will be imposed to final effluents, due to the recent guidelines of the European Water Framework Directive (EUWFD). Concerning the sludge, at least seven metals (Cd, Cr, Cu, Hg, Ni, Pb and Zn) have been regulated in different countries, four of which were classified by EUWFD as priority substances and two of which were also classified as hazardous substances. Although WWTPs are not designed to remove metals, the study of metals behaviour in these systems is a crucial issue to develop predictive models that can help more effectively the regulation of pre-treatment requirements and contribute to optimize the systems to get more acceptable metal concentrations in its discharges. Relevant data have been published in the literature in recent decades concerning the occurrence/fate/behaviour of metals in WWTPs. However, the information is dispersed and not standardized in terms of parameters for comparing results. This work provides a critical review on this issue through a careful systematization, in tables and graphs, of the results reported in the literature, which allows its comparison and so its analysis, in order to conclude about the state of the art in this field. A summary of the main consensus, divergences and constraints found, as well as some recommendations, is presented as conclusions, aiming to contribute to a more concerted action of future research.

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“…A new directive (Proposal 2011) has updated the list of priority substances, including some emerging compounds such as pharmaceuticals (Pomiès et al 2013). As a matter of fact, the presence of trace pharmaceuticals and other xenobiotic compounds in drinking and superficial waters is a major public health concern, since little is known about the potential chronic effect on human health of the long-term ingestion of mixtures of these substances.…”

Section: Introductionmentioning

confidence: 99%

Degradation of Ibuprofen in Aqueous Solution with UV Light: the Effect of Reactor Volume and pH

Iovino

Chianese²,

Canzano

et al. 2016

Water Air Soil Pollut

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The presence of trace of pharmaceutical compounds (PhACs) in groundwater and in drinking and superficial waters is a major public health concern. Recently, various advanced treatment technologies have been studied to remove these kinds of pollutants; among them, combined treatments based on UV light appear to be more eco-friendly and with very interesting removal efficiencies if properly modified. In this paper, the removal of Ibuprofen (IBP) from synthetic water streams was investigated by using a lab-scale experimental device consisting of a batch reactor equipped with a lamp emitting monochromatic UV light (254 nm; 400 mJ m −2 ). The IBP initial concentration (C IBP 0 ) was 45.9 mg L −1 . Two sets of experiments were carried out; the first one was aimed at studying the IBP concentration as a function of time, at different volumes of treated solution; the second one was aimed at exploring the effect of pH on IBP degradation as a function of time.The results obtained show that the concentration of IBP decreases along with treatment time, with a negative effect of the treated volume, i.e., smaller volumes, that is lower liquid heights, are more easily degraded. Moreover, the higher the pH, the better the IBP degradation; actually when pH increases from 2.25 to 5.51 and finally to 8.25, the IBP concentration, after an hour of treatment, decreases respectively to 45, 34, and 27 % from its initial value. A reaction mechanism is suggested, which well describes the effects of volume and pH on the experimentally measured IBP degradation.

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Modelling of micropollutant removal in biological wastewater treatments: A review

Cited by 193 publications

References 84 publications

Biodegradation of atenolol by an enriched nitrifying sludge: Products and pathways

Biodegradation of atenolol by an enriched nitrifying sludge: Products and pathways

Behaviour and fate of metals in urban wastewater treatment plants: a review

Degradation of Ibuprofen in Aqueous Solution with UV Light: the Effect of Reactor Volume and pH

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