Fate of Sulfamethoxazole, 4-Nonylphenol, and 17β-Estradiol in Groundwater Contaminated by Wastewater Treatment Plant Effluent

Environmental Science & Technology, Journal Year: 2009, Volume and Issue: 43(13), P. 4843 - 4850

Published: May 20, 2009

Organic wastewater contaminants (OWCs) were measured in samples collected from monitoring wells located along a 4.5-km transect of plume groundwater contaminated by 60 years continuous rapid infiltration disposal treatment plant effluent. Fifteen percent the 212 OWCs analyzed detected, including antibiotic sulfamethoxazole (SX), nonionic surfactant degradation product 4-nonylphenol (NP), solvent tetrachloroethene (PCE), and disinfectant 1,4-dichlorobenzene (DCB). Comparison 2005 sampling results to data same 1985 indicates that PCE DCB are transported more rapidly aquifer than NP, consistent with predictions based on compound hydrophobicity. Natural gradient situ tracer experiments conducted evaluate subsurface behavior SX, female sex hormone 17β-estradiol (E2) two oxic zones aquifer: (1) downgradient transition zone at interface between contamination overlying uncontaminated (2) beneath beds, which have not been loaded for 10 years. In both zones, breakthrough curves conservative bromide (Br−) SX nearly coincident, whereas NP E2 retarded relative Br− showed mass loss. Retardation was greater zone. Attenuation attributed biotransformation, laboratory microcosm using sediments show uniform-ring-labeled 14C 4-normal-NP biodegraded (30−60% recovered as 14CO2 13 days) 4-14C (20−90% 54 days). There little difference mineralization potential sites.

Language: Английский

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Part V—sorption of pharmaceuticals and personal care products

Environmental Science and Pollution Research, Journal Year: 2008, Volume and Issue: 16(1), P. 106 - 116

Published: Oct. 17, 2008

Language: Английский

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Fate of 4-Nonylphenol and 17β-Estradiol in the Redwood River of Minnesota

Environmental Science & Technology, Journal Year: 2011, Volume and Issue: 46(2), P. 860 - 868

Published: Dec. 30, 2011

The majority of previous research investigating the fate endocrine-disrupting compounds has focused on single processes generally in controlled laboratory experiments, and limited studies have directly evaluated their transport rivers. This study 4-nonylphenol, 17β-estradiol, estrone a 10-km reach Redwood River southwestern Minnesota. same parcel water was sampled as it moved downstream, integrating chemical transformation hydrologic processes. conservative tracer bromide used to track being sampled, change mass target relative determined at two locations downstream from wastewater treatment plant effluent outfall. In-stream attenuation coefficients (kstream) were calculated by assuming first-order kinetics (negative values correspond attenuation, whereas positive indicate production). Attenuation 17β-estradiol (kstream = −3.2 ± 1.0 day–1) attributed primarily due sorption biodegradation stream biofilm bed sediments. Estrone 0.6 0.8 4-nonylphenol 1.4 1.9 produced reach, likely biochemical parent (17β-estradiol, 4-nonylphenolpolyethoxylates, 4-nonyphenolpolyethoxycarboxylates). Despite these transported kilometers thus additive concentrations multiple sources into degradates having estrogenic activity can explain environmental persistence widespread observations biological disruption surface waters.

Language: Английский

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Isomer-Specific Degradation of Branched and Linear 4-Nonylphenol Isomers in an Oxic Soil

Environmental Science & Technology, Journal Year: 2011, Volume and Issue: 45(19), P. 8283 - 8289

Published: Aug. 8, 2011

Using (14)C- and (13)C-ring-labeling, degradation of five p-nonylphenol (4-NP) isomers including four branched (4-NP(38), 4-NP(65), 4-NP(111), 4-NP(112)) one linear (4-NP(1)) in a rice paddy soil was studied under oxic conditions. Degradation followed an availability-adjusted first-order kinetics with the decreasing order half-life 4-NP(111) (10.3 days) > 4-NP(112) (8.4 4-NP(65) (5.8 4-NP(38) (2.1 4-NP(1) (1.4 days), which is agreement their reported estrogenicities. One metabolite less polarity than parent compound occurred rapidly remained stable soil. At end incubation (58 bound residues amounted to 54% initially applied radioactivity resided almost exclusively humin fraction organic matter, chemically humin-bound increased over incubation. Our results indicate increase specific estrogenicity remaining 4-NPs as result isomer-specific therefore underline importance understanding individual fate (including degradation, metabolism, bound-residue formation) for risk assessment should not be used representative studies on environmental behavior.

Language: Английский

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In-Stream Attenuation of Neuro-Active Pharmaceuticals and Their Metabolites

Environmental Science & Technology, Journal Year: 2013, Volume and Issue: 47(17), P. 9781 - 9790

Published: Aug. 16, 2013

In-stream attenuation was determined for 14 neuro-active pharmaceuticals and associated metabolites. Lagrangian sampling, which follows a parcel of water as it moves downstream, used to link hydrological chemical transformation processes. Wastewater loading compounds varied considerably over span several hours, thus sampling regime verify that the being sampled mechanism developed correct measured concentrations if not. 5.4-km evaluated reach could be modeled pseudo-first-order decay 11 pharmaceutical compounds, illustrating capacity streams reduce conveyance downstream. Fluoxetine N-desmethyl citalopram were most rapidly attenuated (t1/2 = 3.6 ± 0.3 h, 4.0 0.2 respectively). Lamotrigine, 10,11,-dihydro-10,11,-dihydroxy-carbamazepine, carbamazepine persistent 12 2.0 2.6 21 4.5 Parent (e.g., buproprion, carbamazepine, lamotrigine) generally more relative their Several (citalopram, venlafaxine, O-desmethyl-venlafaxine) not attenuated. It postulated primary removal these interaction with bed sediments stream biofilms, based on in biofilms column experiment using sediments.

Language: Английский

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Role of Biofilms in Sorptive Removal of Steroidal Hormones and 4-Nonylphenol Compounds from Streams

Environmental Science & Technology, Journal Year: 2011, Volume and Issue: 45(17), P. 7275 - 7283

Published: Aug. 16, 2011

Stream biofilms play an important role in geochemical processing of organic matter and nutrients, however, the significance this matrix sorbing trace contaminants is less understood. This study focused on stream steroidal hormones 4-nonylphenol compounds from surface waters using colonized situ artificial substrata subsequently transferred to laboratory for controlled batch sorption experiments. Steroidal readily sorb as indicated by partition coefficients (Kom, L kg–1) 17β-estradiol (102.5–2.8 kg–1), 17α-ethynylestradiol (102.5–2.9 (103.4–4.6 4-nonylphenolmonoethoxylate (103.5–4.0 4-nonylphenoldiethoxylate (103.9–4.3 kg–1). Experiments water quality differences induce changes relative composition periphyton heterotrophic bacteria biofilm did not significantly affect sorptive properties biofilm, providing additional evidence that will under variety environmental conditions. Because target was linearly correlated with content, hydrophobic into appears be dominant mechanism. An analysis water, sediment, dissolved matrices at mass/volume ratios typical smaller rivers showed importance a comparable bed sediments. Therefore, primary attenuating these waters. represents base ecosystem, accumulation may exposure pathway organisms higher trophic levels.

Language: Английский

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Removal of selected organic micropollutants in planted and unplanted pilot-scale horizontal flow constructed wetlands under conditions of high organic load

Ecological Engineering, Journal Year: 2014, Volume and Issue: 71, P. 234 - 245

Published: Aug. 5, 2014

Language: Английский

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Biodegradation and Attenuation of Steroidal Hormones and Alkylphenols by Stream Biofilms and Sediments

Environmental Science & Technology, Journal Year: 2011, Volume and Issue: 45(10), P. 4370 - 4376

Published: April 26, 2011

Biodegradation of select endocrine-disrupting compounds (17β-estradiol, estrone, 17α-ethynylestradiol, 4-nonylphenol, 4-nonylphenolmonoexthoylate, and 4-nonylphenoldiethoxylate) was evaluated in stream biofilm, sediment, water matrices collected from locations upstream downstream a wastewater treatment plant effluent discharge. Both biologically mediated transformation to intermediate metabolites mineralization were separate time interval experiments. Initial intervals (0–7 d) biodegradation by the microbial community dominant at sampling. Later (70 185 potential as adapted absence outside energy sources. The sediment matrix more effective than biofilm biodegrading 4-nonylphenol 17β-estradiol. 17α-ethynylestradiol occurred later not observed or matrices. Stream biofilms play an important role attenuation surface waters due both sorption processes. Because bed sediments occurs on faster temporal scale (<1 h) biodegrade target (50% >185 d), these can accumulate sediments.

Language: Английский

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Distribution and potential ecological risk of 50 phenolic compounds in three rivers in Tianjin, China

Environmental Pollution, Journal Year: 2017, Volume and Issue: 235, P. 121 - 128

Published: Dec. 23, 2017

Language: Английский

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Utilizing eco-friendly kaolinite-biochar composite adsorbent for removal of ivermectin in aqueous media

Journal of Environmental Management, Journal Year: 2020, Volume and Issue: 279, P. 111619 - 111619

Published: Nov. 6, 2020

Language: Английский

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