Study on endocrine disrupting chemicals in wastewater treatment plants

Nasu, M.; Goto, Masafumi; Kato, Hiroyuki; Oshima, Yoshito; Tanaka, Hiroaki

doi:10.2166/wst.2001.0078

Cited by 116 publications

(63 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This apparent anomaly in the increase in E1concentration is explained by the biological conversion of E2 to E1 during the treatment process and in the sludge route. This abnormal behaviour has also been observed in previous studies (Nasu et al, 2001;Jurgens et al, 2002;Hashimoto et al, 2007;Ren et al, 2007). This also explains why E1 persist in both the effluent and sludge from the WWTPs.…”

Section: Removal Rates Of Treatment Processessupporting

confidence: 88%

“…It exhibited an increase in concentration from influent to effluent in some of the sites. Nasu et al (2001) also showed E2 concentrations increasing from raw influent to primary effluent within Japanese STW (before falling during biological treatment), which suggest that perhaps some further deconjugation was still taking place. In another study of the Japanese STW by Hashimoto et al (2007) a removal efficiency of 11-83 % were reported for E1 in conventional activated sludge plant, with E2 removal of up to 86 %.…”

Section: Introductionmentioning

confidence: 93%

See 1 more Smart Citation

The fate and behavior of selected endocrine disrupting chemicals in full scale wastewater and sludge treatment unit processes

Ifelebuegu

2011

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

AB STRACT: Endocrine disrupting chemicals are discharged into the environment mainly through wastewater treatment processes. There is a need for better understanding of the fate of these compounds in the unit processes of treatment plant to optimise their removal. The fate of oestrone, 17β-estradiol, 17α-ethinyestradiol and nonylphenol in the unit processes of full scale wastewater treatment plants in the UK, including activated sludge plant, oxidation ditch, biofilter and rotating biological contactor were investigated. The overall removal efficiencies of all the compounds ranged from 41 % to 100 %. The removals were predominantly during the secondary biological treatment with the rates of removal related to the nitrification rates and the sludge age. The removal efficiency of the treatment processes were in the order activated sludge > oxidation ditch > biofilter > rotating biological contactors. Activated sludge plant configured for biological nutrient removal showed better removal of the endocrine disrupting chemicals compared to conventional activated sludge plant effluents. Tertiary treatment was also significant in the removal process through solids removal. Overall mechanisms of removal were biodegradation and sorption unto sludge biomass. Phytoremediation was also significant in the removal processes. The endocrine disrupting chemicals persisted in the anaerobic sludge digestion process with percentage removals ranging fro 10-48 %. Sorption of the endocrine disrupting chemicals onto the sludge increased with increasing values for the partitioning coefficients and the organic carbon contents of the sludge.

show abstract

Section: Removal Rates Of Treatment Processessupporting

confidence: 88%

Section: Introductionmentioning

confidence: 93%

The fate and behavior of selected endocrine disrupting chemicals in full scale wastewater and sludge treatment unit processes

Ifelebuegu

2011

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…Comparable concentration ranges have been reported from Japan (Nasu et al 2000), The Netherlands (Belfroid et al, 1999), Germany (Kuch and Ballschmiter, 2001) and Canada (Ternes et al, 1999b). Somewhat lower levels of E2 (1.1 ng l -1 ) and EE2 (4.5 ng l -1 ) were present in effluent from a Swedish STW, mostly present in unconjugated form, suggesting deconjugation may occur in the sewage system (Larsson et al, 1999).…”

Section: Figure 1 Near Heresupporting

confidence: 58%

Partitioning, bioavailability and effects of oestrogens and xeno-oestrogens in the aquatic environment

et al. 2005

View full text Add to dashboard Cite

This review provides insights into the distribution and impact of oestrogens and xenooestrogens in the aquatic environment and highlights some significant knowledge gaps in our understanding of endocrine disrupting chemicals. Key areas of uncertainty in the assessment of risk include the role of estuarine sediments in mediating the fate and bioavailability of environmental (xeno)oestrogens (notably their transfer to benthic organisms and estuarine food chains), together with evidence for endocrine disruption in invertebrate populations.Emphasis is placed on using published information to interpret the behaviour and effects of a small number of 'model compounds' thought to contribute to oestrogenic effects in nature; namely, the natural steroid 17β-estradiol (E2) and the synthetic hormone 17α-ethinylestradiol (EE2), together with the alkylphenols octyl-and nonylphenol (OP, NP) as oestrogen mimics. Individual sections of the review are devoted to sources and concentrations of (xeno)oestrogens in waterways, sediment partitioning and persistence, bioaccumulation rates and routes, assays and biomarkers of oestrogenicity, and, finally, a synopsis of reproductive and ecological effects in aquatic species.

show abstract

“…However, some estrogenic chemicals could not be eliminated by the secondary treatment. It was reported that certain natural and synthetic hormones and alkyl-phenolic surfactants could not be removed during the biological treatment process and their estrogenic effects were even increased or activated (Nasu et al 2001). In comparison, we can conclude that the removal efficiency of estrogenic chemicals from secondary treatment process depends on the chemical characteristics of the sewage.…”

Section: Estrogenic Chemicalsmentioning

confidence: 81%

“…Endocrine disruption activity in WWTP effluents has also been frequently studied (Nasu et al 2001;Murk et al 2002;Alatriste-Mondragon et al 2003). This effect was attributed to a group of chemicals including natural products, pharmaceuticals, and industrial chemicals, which have been shown to be estrogen mimics.…”

mentioning

confidence: 99%

Assessing the Detoxication Efficiencies of Wastewater Treatment Processes Using a Battery of Bioassays/Biomarkers

Wang

2005

Arch Environ Contam Toxicol

View full text Add to dashboard Cite

Abstract. A battery of in vitro bioassays, including a Neutral Red (NR) assay using MCF-7 cells for predicting cytotoxic chemicals, an ethoxy resorufin-O-deethylase (EROD) activity assay using H4IIE cells to check for dioxin-like chemicals, and a recombinant gene yeast assay for screening estrogenic chemicals, was conducted to assess the removal efficiencies of trace toxic chemicals by different treatment processes in the waste water treatment plant (WWTP). The effluents were extracted by solid phase extraction (SPE) and were fractionated into three fractions based on polarities. The battery of bioassays was performed for each fraction. In the battery, the toxicities of the effluents were described according to their modes of actions (MOA) or biomarkers and the properties of the toxic chemicals were categorized by their polarities and MOAs. The proposed procedure could be used as a tool to diagnose the toxic characteristics of the complicate mixture. The results showed that cytotoxic, dioxin-like and estrogenic chemicals could be detected in all samples. In the influent, cytotoxic and dioxin-like chemicals were mainly in polar fraction and estrogenic chemicals were in non-polar and moderate-polar fractions. The secondary treatment (active sludge) could remove a small amount of these toxicants. Among different types of advanced treatments, flocculation was good enough to remove most of the cytotoxic chemicals and a combination of flocculation, ozone oxidation, and post-biological treatment could eliminate most of the dioxin-like and estrogenic chemicals.

show abstract

Study on endocrine disrupting chemicals in wastewater treatment plants

Cited by 116 publications

References 0 publications

The fate and behavior of selected endocrine disrupting chemicals in full scale wastewater and sludge treatment unit processes

The fate and behavior of selected endocrine disrupting chemicals in full scale wastewater and sludge treatment unit processes

Partitioning, bioavailability and effects of oestrogens and xeno-oestrogens in the aquatic environment

Assessing the Detoxication Efficiencies of Wastewater Treatment Processes Using a Battery of Bioassays/Biomarkers

Contact Info

Product

Resources

About