Occurrence of Xenobiotics in Gray Water and Removal in Three Biological Treatment Systems

Leal, Lucía Hernández; Vieno, Niina; Temmink, Hardy; Zeeman, G.; Buisman, Cees J.N.

doi:10.1021/es101509e

Cited by 106 publications

(24 citation statements)

References 44 publications

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“…Although they are often present in low concentration, various studies into effects on quality and ecological functioning of water systems show that these chemicals form a potential new problem. Their estrogenic and carcinogenic toxicity will impact the quality of ecological life and possibly also of human life [5]. There are currently no legally regulated maximum permitted concentrations of pharmaceuticals in the environment.…”

Section: Introductionmentioning

confidence: 99%

Microbial Removal of the Pharmaceutical Compounds Ibuprofen and Diclofenac from Wastewater

Langenhoff

Inderfurth

Veuskens

et al. 2013

BioMed Research International

110

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Studies on the occurrence of pharmaceuticals show that the widely used pharmaceuticals ibuprofen and diclofenac are present in relevant concentrations in the environment. A pilot plant treating hospital wastewater with relevant concentrations of these pharmaceuticals was evaluated for its performance to reduce the concentration of the pharmaceuticals. Ibuprofen was completely removed, whereas diclofenac yielded a residual concentration, showing the necessity of posttreatment to remove diclofenac, for example, activated carbon. Successively, detailed laboratory experiments with activated sludge from the same wastewater treatment plant showed bioremediation potential in the treatment plant. The biological degradation pathway was studied and showed a mineralisation of ibuprofen and degradation of diclofenac. The present microbes were further studied in laboratory experiments, and DGGE analyses showed the enrichment and isolation of highly purified cultures that degraded either ibuprofen or diclofenac. This research illuminates the importance of the involved bacteria for the effectiveness of the removal of pharmaceuticals in a wastewater treatment plant. A complete removal of pharmaceuticals from wastewater will stimulate water reuse, addressing the worldwide increasing demand for clean and safe fresh water.

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Section: Introductionmentioning

confidence: 99%

Microbial Removal of the Pharmaceutical Compounds Ibuprofen and Diclofenac from Wastewater

Langenhoff

Inderfurth

Veuskens

et al. 2013

BioMed Research International

110

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“…There is quite a high volume of information about removal of pharmaceuticals and pesticides via ozonation, but the data available for personal care products, and especially for UV filters, is rather limited and somewhat ambiguous. For instance, whereas Rosal et al [39] did not observe any elimination of BP3 by ozone, other studies report removal efficiencies higher than 80% [40].…”

Section: Degradation Processesmentioning

confidence: 91%

“…All tests were done at environmental relevant concentrations (3 mg/L). Hernández Leal et al [40] studied the removal of some UV filters (4-MBC, BP3, OC and avobenzone) in different biological systems under aerobic and anaerobic conditions. Based on their high log K ow values, they assume that their high removal under aerobic conditions and also the variable yields of removal under anaerobic conditions are driven by adsorption and not by biodegradation.…”

Section: Degradation Processesmentioning

confidence: 99%

UV Filters Biodegradation by Fungi, Metabolites Identification and Biological Activity Assessment

Badia-Fabregat

Caminal

Vicent

et al. 2012

The Handbook of Environmental Chemistry

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Organic UV filters used in cosmetics and sunlight protection of materials are considered emerging contaminants. These xenobiotic compounds occur in the environment in relevant concentrations and display critical properties such as environmental persistence and bioaccumulation. They enter the environment mainly through the liquid effluent of wastewater treatment plants (WWTPs), but, due to their high hydrophobicity, they are also adsorbed in WWTP sludge, that is, eventually spread on agricultural fields as fertilizer. The treatment of WWTP sludge with the white-rot fungi Trametes versicolor has emerged as a feasible alternative to current conventional treatment processes to degrade them in a range from 87% in the case of 3-(4 0 -methylbenzylidene) camphor (4-MBC) to 100% of benzophenone-3 (BP3) and its metabolite 4,4 0 -dihydroxybenzophenone (4DHB). When treating the sewage sludge to remove sunscreens content, it is crucial to establish the biological activity profile along the process. metabolites possessed significant oestrogenic activity at the produced concentrations. These results demonstrate the suitability of fungi to degrade sunscreen agents and eliminate their oestrogenic activity.

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“…The reason for the observed removal in three studies (Table 1) might be different biological activities of the sludges used as inoculum sources but could also be due to different experimental setups or variable recovery rates due to the complex matrix. Moreover, several sampling strategies for the influent and effluent do not account for sorption processes in the reactors (such as anaerobic sludge blanket reactors) [28][29][30][31][32]. At the same time, there is great interest in the anerobic biotransformation processes of BPA [33][34][35][36][37].…”

Section: Experimental Setup Sample/inoculum Bpa Change Studymentioning

confidence: 99%

Bisphenol A: Quantification in Complex Matrices and Removal by Anaerobic Sludges

et al. 2021

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The endocrine disruptor bisphenol A (BPA) is one of the most commonly found micropollutants in the environment. However, the biodegradation of BPA under anaerobic (methanogenic) conditions is still an understudied process in wastewater treatment systems. The current study thus addresses the need for a simple and user-friendly analytical method for the rapid and accurate quantification of BPA in complex matrices such as digested and co-digester sludges. We established a microwave-assisted extraction method, followed by derivatization and gas chromatography–mass spectrometry to quantify BPA by comparing it with a deuterated internal standard. The BPA removal capabilities of three digester sludges and three co-digester sludges were examined under mesophilic methanogenic conditions in biogas plants. The endogenous BPA concentration (dry weight) ranged from 1596 to 10,973 µg kg−1 in digested sewage sludges, and from below the limit of quantification to 9069 µg kg−1 in co-digester sludges. When BPA was added to the sludges, the removal capabilities ranged from not significant to 50% after 21 days of incubation. Biogas production was unaffected by the addition of BPA (228 µg kg−1) to the aqueous sludge. The study demonstrated that BPA could be removed under anaerobic conditions in accustomed inoculates. The findings have far-reaching implications for understanding BPA persistence and detoxification under anaerobic conditions.

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Occurrence of Xenobiotics in Gray Water and Removal in Three Biological Treatment Systems

Cited by 106 publications

References 44 publications

Microbial Removal of the Pharmaceutical Compounds Ibuprofen and Diclofenac from Wastewater

Microbial Removal of the Pharmaceutical Compounds Ibuprofen and Diclofenac from Wastewater

UV Filters Biodegradation by Fungi, Metabolites Identification and Biological Activity Assessment

Bisphenol A: Quantification in Complex Matrices and Removal by Anaerobic Sludges

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