Biodegradation of clofibric acid and identification of its metabolites

Salgado, Ricardo; Oehmen, Adrian; Carvalho, Gilda; Noronha, João Paulo; Reis, Maria A.M.

doi:10.1016/j.jhazmat.2012.09.029

Cited by 43 publications

(20 citation statements)

References 32 publications

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“…This means that the sludge was stable and well colonized, with optimal biological activity butshowing discrete efficiency in wastewater treatment. This is in general agreement with the results obtained on the behavior of the sludge (Salgado et al, 2012).…”

Section: Bioindicative Studiessupporting

confidence: 93%

“…Furthermore, these reactors can be more flexible and efficient than biological continuous reactors for the degradation of EPs, because the cycle can be modified to fit the biodegradation process (Salgado et al, 2012). Some important parameters were monitored to control SBR performance, namely organic matter and MIT removal, nitrification and denitrification processes as well as sludge composition.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Methylisothiazolinone on Biological Treatment: Efficiency of SBRs and Bioindicative Studies

Amat

Arqués

López-PérezM.F.

et al. 2015

Environmental Engineering Science

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Section: Bioindicative Studiessupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Effect of Methylisothiazolinone on Biological Treatment: Efficiency of SBRs and Bioindicative Studies

Amat

Arqués

López-PérezM.F.

et al. 2015

Environmental Engineering Science

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“…The biodegradation result is thus derived exclusively from oxidation of the propionate part of the side chain. The combination of an ether function with a tetra‐substituted carbon containing a geminal dimethyl attached to it was previously concluded as difficult to degrade in the case of chlorophenoxy acids .…”

Section: Resultsmentioning

confidence: 99%

An assessment of biodegradability of quaternary carbon–containing fragrance compounds: Comparison of experimental OECD screening test results and in silico prediction data

Seyfried

Boschung

2014

Enviro Toxic and Chemistry

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An assessment of biodegradability was carried out for fragrance substances containing quaternary carbons by using data obtained from Organisation for Economic Co-operation and Development (OECD) 301F screening tests for ready biodegradation and from Biowin and Catalogic prediction models. Despite an expected challenging profile, a relatively high percentage of common-use fragrance substances showed significant biodegradation under the stringent conditions applied in the OECD 301F test. Among 27 test compounds, 37% met the pass level criteria after 28 d, while another 26% indicated partial breakdown (≥20% biodegradation). For several compounds for which structural analogs were available, the authors found that structures that were rendered less water soluble by either the presence of an acetate ester or the absence of oxygen tended to degrade to a lesser extent compared to the primary alcohols or oxygenated counterparts under the test conditions applied. Difficulties were encountered when attempting to correlate experimental with in silico data. Whereas the Biowin model combinations currently recommended by regulatory agencies did not allow for a reliable discrimination between readily and nonbiodegradable compounds, only a comparably small proportion of the chemicals studied (30% and 63% depending on the model) fell within the applicability domain of Catalogic, a factor that critically reduced its predictive power. According to these results, currently neither Biowin nor Catalogic accurately reflects the potential for biodegradation of fragrance compounds containing quaternary carbons.

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“…Since the metal deposition occurs on the surface of the cathode to boost the space-time yield, it is required to increase the surface area. Therefore, the fluidized bed electrode was developed, with granular graphite and glass beads for filling the gap between the main electrodes and used as the third electrode [32].…”

Section: Electrochemical Reactor Designs and Configurationsmentioning

confidence: 99%

Recent Trends in Removal Pharmaceuticals and Personal Care Products by Electrochemical Oxidation and Combined Systems

Dao

Yang

Chen

et al. 2020

Water

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Due to various potential toxicological threats to living organisms even at low concentrations, pharmaceuticals and personal care products in natural water are seen as an emerging environmental issue. The low efficiency of removal of pharmaceuticals and personal care products by conventional wastewater treatment plants calls for more efficient technology. Research on advanced oxidation processes has recently become a hot topic as it has been shown that these technologies can effectively oxidize most organic contaminants to inorganic carbon through mineralization. Among the advanced oxidation processes, the electrochemical advanced oxidation processes and, in general, electrochemical oxidation or anodic oxidation have shown good prospects at the lab-scale for the elimination of contamination caused by the presence of residual pharmaceuticals and personal care products in aqueous systems. This paper reviewed the effectiveness of electrochemical oxidation in removing pharmaceuticals and personal care products from liquid solutions, alone or in combination with other treatment processes, in the last 10 years. Reactor designs and configurations, electrode materials, operational factors (initial concentration, supporting electrolytes, current density, temperature, pH, stirring rate, electrode spacing, and fluid velocity) were also investigated.

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Biodegradation of clofibric acid and identification of its metabolites

Cited by 43 publications

References 32 publications

Effect of Methylisothiazolinone on Biological Treatment: Efficiency of SBRs and Bioindicative Studies

Effect of Methylisothiazolinone on Biological Treatment: Efficiency of SBRs and Bioindicative Studies

An assessment of biodegradability of quaternary carbon–containing fragrance compounds: Comparison of experimental OECD screening test results and in silico prediction data

Recent Trends in Removal Pharmaceuticals and Personal Care Products by Electrochemical Oxidation and Combined Systems

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