Triclosan persistence through wastewater treatment plants and its potential toxic effects on river biofilms

Ricart, Marta; Guasch, Helena; Alberch, Mireia; Barceló, Damià; Bonnineau, Chloé; Geiszinger, Anita; Farré, Marinella; Ferrer, Josep; Ricciardi, Francesco; Romaní, Anna M.; Morin, Soizic; Proia, Lorenzo; Sala, Lluís; Sureda, David; Sabater, Sergi

doi:10.1016/j.aquatox.2010.08.010

Cited by 158 publications

(107 citation statements)

References 46 publications

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“…Of prime speculation has been the potential for cascading ecological consequences for stream communities, given demonstrated biofilm-specific effects [22,27,29,31]. Our results equally demonstrated changes in the biofilm community, in terms of bacterial cell density, algal biomass, and algal structure (decreased cyanobacteria densities, potential change in diatom species).…”

Section: Discussionsupporting

confidence: 64%

Effects of a chronic lower range of triclosan exposure on a stream mesocosm community

Nietch¹,

Quinlan

Lazorchak³

et al. 2013

Enviro Toxic and Chemistry

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Triclosan (5-chloro-2-(2,4-dichlorophenoxy)phenol) is an antimicrobial found in consumer soaps and toothpaste. It is in treated wastewater effluents at low parts-per-billion concentrations, representing a potentially chronic exposure condition for biota inhabiting receiving streams. For the present study, a naturally colonized benthos was created using flow-through indoor mesocosms; then, the benthic communities were dosed to achieve different in-stream triclosan concentrations (control, 0.1 μg/L, 0.5 μg/L, 1.0 μg/L, 5.0 μg/L, and 10 μg/L) for 56 d. Water quality parameters and endpoints from bacteria to macroinvertebrates, as well as interacting abiotic components, were measured. Effects of triclosan on specific microbial endpoints were observed at all doses, including an effect on litter decomposition dynamics at doses of 1.0 μg/L and higher. Resistance of periphytic bacteria to triclosan significantly increased at doses of 0.5 μg/L and above. By the end of dosing, the antimicrobial appeared to stimulate the stream periphyton at the 3 lowest doses, while the 2 highest doses exhibited decreased stocks of periphyton, including significantly lower bacteria cell densities and cyanobacteria abundance compared with the control. Other than an effect on benthic ostracods, the changes that occurred in the periphyton did not translate to significant change in the colonizing nematodes, the macroinvertebrate community as a whole, or other measurements of stream function. The results shed light on the role a low, chronic exposure to triclosan may play in effluent-dominated streams.

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Section: Discussionsupporting

confidence: 64%

Effects of a chronic lower range of triclosan exposure on a stream mesocosm community

Nietch¹,

Quinlan

Lazorchak³

et al. 2013

Enviro Toxic and Chemistry

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“…A similar phenomenon was observed for green algae Scenedesmus vacuolatus (Franz et al, 2008). Ricart et al (2010) also reported that the ratio between live and dead diatom cells in river biofilm exposed to 500 g/L TCS decreased by approximately 55%, while the photosynthetic efficiency was only inhibited by 25%. Therefore, the effect of TCS on microalgae may be underestimated if using photosynthetic efficiency alone as an end point.…”

Section: Inhibition Of Growth and Photosynthesissupporting

confidence: 49%

Interactions between the antimicrobial agent triclosan and the bloom-forming cyanobacteria Microcystis aeruginosa

Huang

Cheng

et al. 2016

Aquatic Toxicology

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“…Triclosan is degraded to dioxins and is toxic to aquatic bacteria at levels found in the environment (Ricart et al, 2010).…”

Section: Lifestyle and Personal Care Productsmentioning

confidence: 99%

Review of risk from potential emerging contaminants in UK groundwater

Stuart

Lapworth

Crane

et al. 2012

Science of The Total Environment

636

284

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This paper provides a review of the types of emerging organic groundwater contaminants (EGCs) which are beginning to be found in the UK. EGCs are compounds being found in groundwater that were previously not detectable or known to be significant and can come from agricultural, urban and rural point sources. EGCs include nanomaterials, pesticides, pharmaceuticals, industrial compounds, personal care products, fragrances, water treatment by-products, flame retardants and surfactants, as well as caffeine and nicotine. Many are relatively small polar molecules which may not be effectively removed by drinking water treatment. Data from the UK Environment Agency's groundwater screening programme for organic pollutants found within the 30 most frequently detected compounds a number of EGCs such as pesticide metabolites, caffeine and DEET. Specific determinands frequently detected include pesticides metabolites, pharmaceuticals including carbamazepine and triclosan, nicotine, food additives and alkyl phosphates. This paper discusses the routes by which these compounds enter groundwater, their toxicity and potential risks to drinking water and the environment. It identifies challenges that need to be met to minimise risk to drinking water and ecosystems.

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Triclosan persistence through wastewater treatment plants and its potential toxic effects on river biofilms

Cited by 158 publications

References 46 publications

Effects of a chronic lower range of triclosan exposure on a stream mesocosm community

Effects of a chronic lower range of triclosan exposure on a stream mesocosm community

Interactions between the antimicrobial agent triclosan and the bloom-forming cyanobacteria Microcystis aeruginosa

Review of risk from potential emerging contaminants in UK groundwater

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