Influence of feed characteristics on the removal of micropollutants during the anaerobic digestion of contaminated sludge

Barret, Maialen; Cea-Barcia, Glenda; Guillon, A.; Carrère, Hélène; Patureau, Dominique

doi:10.1016/j.jhazmat.2010.05.003

Cited by 41 publications

(16 citation statements)

References 42 publications

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“…Overall, greater removal of ΣNPEOs was observed for the mixed sludge >50% in comparison to primary sludge. This reflected results of Barret et al [40] who observed greater metabolism of polycylic aromatic hydrocarbons (PAHs), 7 polychlorobiphenyls (PCBs) and NP in secondary sludge digestion. In addition Patureau et al [41] also observed the removal of NP1-2EO and NP in a mixed sludge under mesophilic anaerobic conditions.…”

Section: Effect Of Retention Time On the Removal Of Steroid Estrogenssupporting

confidence: 84%

The effectiveness of anaerobic digestion in removing estrogens and nonylphenol ethoxylates

Paterakis

Chiu

Koh

et al. 2012

Journal of Hazardous Materials

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The fate and behaviour of two groups of endocrine disrupting chemicals, steroid estrogens and nonylphenol ethoxylates, have been evaluated during the anaerobic digestion of primary and mixed sewage sludge under mesophilic and thermophilic conditions. Digestion occurred over six retention times, in laboratory scale reactors, treating sludges collected from a sewage treatment works in the United Kingdom. It has been established that sludge concentrations of both groups of compounds demonstrated temporal variations and that concentrations in mixed sludge were influenced by the presence of waste activated sludge as a result of transformations during aerobic treatment. The biodegradation of total steroid estrogens was>50% during primary sludge digestion with lower removals observed for mixed sludge, which reflected bulk organic solids removal efficiencies. The removal of nonylphenol ethoxylates was greater in mixed sludge digestion (>58%) compared with primary sludge digestion and did not reflect bulk organic removal efficiencies. It is apparent that anaerobic digestion reduces the concentrations of these compounds, and would therefore be expected to confer a degree of protection against exposure and transfer of both groups of compounds to the receiving/re-use environment.

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Section: Effect Of Retention Time On the Removal Of Steroid Estrogenssupporting

confidence: 84%

The effectiveness of anaerobic digestion in removing estrogens and nonylphenol ethoxylates

Paterakis

Chiu

Koh

et al. 2012

Journal of Hazardous Materials

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“…However, the responsible parameter of these trends cannot be ascertained, since SRT and OLR are interrelated variables in our reactors. So far, few and contradictory results are available regarding the role of OLR and SRT on OMPs removal (Barret et al, 2010;Carballa et al, 2007;Samaras et al, 2014). In general, it can be stated that the SRT, in the typical range of 10e30 d, has a slight effect on the biotransformation of pharmaceuticals, musk fragrances, and estrogens, while the influence of the OLR was only proved for polycyclic aromatic hydrocarbons (PAHs).…”

Section: Influence Of Operational Parametersmentioning

confidence: 99%

Is anaerobic digestion effective for the removal of organic micropollutants and biological activities from sewage sludge?

et al. 2016

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The occurrence of emerging organic micropollutants (OMPs) in sewage sludge has been widely reported; nevertheless, their fate during sludge treatment remains unclear. The objective of this work was to study the fate of OMPs during mesophilic and thermophilic anaerobic digestion (AD), the most common processes used for sludge stabilization, by using raw sewage sludge without spiking OMPs. Moreover, the results of analytical chemistry were complemented with biological assays in order to verify the possible adverse effects (estrogenic and genotoxic) on the environment and human health in view of an agricultural (re)use of digested sludge. Musk fragrances (AHTN, HHCB), ibuprofen (IBP) and triclosan (TCS) were the most abundant compounds detected in sewage sludge. In general, the efficiency of the AD process was not dependent on operational parameters but compound-specific: some OMPs were highly biotransformed (e.g. sulfamethoxazole and naproxen), while others were only slightly affected (e.g. IBP and TCS) or even unaltered (e.g. AHTN and HHCB). The MCF-7 assay evidenced that estrogenicity removal was driven by temperature. The Ames test did not show point mutation in Salmonella typhimurium while the Comet test exhibited a genotoxic effect on human leukocytes attenuated by AD. This study highlights the importance of combining chemical analysis and biological activities in order to establish appropriate operational strategies for a safer disposal of sewage sludge. Actually, it was demonstrated that temperature has an insignificant effect on the disappearance of the parent compounds while it is crucial to decrease estrogenicity.

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“…Barret et al [13] stated, that the hydrocarbons anaerobic digestion was not strongly related to the overall metabolism of the biomass. In this research the total dehydrogenase activity assessment was applied for the evaluation of microbial enzymatic activity.…”

Section: Tablementioning

confidence: 99%

“…Their highly hydrophobic properties enable them to be adsorbed on sludge flocs [13], which increases their accumulation and the potential influence on the subsequent sludge digestion. Petroleum derivatives can be used by microorganisms as an additional source of carbon not only in aerobic but also in anaerobic conditions [14].…”

Section: Introductionmentioning

confidence: 99%

The influence of petroleum products on the methane fermentation process

Choromanski

Karwowska

Wojtkowska

2016

Journal of Hazardous Materials

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Influence of feed characteristics on the removal of micropollutants during the anaerobic digestion of contaminated sludge

Cited by 41 publications

References 42 publications

The effectiveness of anaerobic digestion in removing estrogens and nonylphenol ethoxylates

The effectiveness of anaerobic digestion in removing estrogens and nonylphenol ethoxylates

Is anaerobic digestion effective for the removal of organic micropollutants and biological activities from sewage sludge?

The influence of petroleum products on the methane fermentation process

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