Monitoring and assessing processes of organic chemicals removal in constructed wetlands

Imfeld, Gwenaël; Braeckevelt, Mareike; Kuschk, Peter; Richnow, Hans H.

doi:10.1016/j.chemosphere.2008.09.062

Cited by 309 publications

(170 citation statements)

References 143 publications

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“…If the capacity of CWs to depurate waters from bulk pollutants and nutrients is generally recognized, recent research has been directed to the removal of other contaminants such as metals and organic micropollutants from several types of wastewaters (Matamoros et al, 2008;Rai, 2008;Imfeld et al, 2009;Park et al, 2009;Avila et al, 2010;Marchand et al, 2010;Breitholtz et al, 2012). In particular, several studies showed successful applications of CWs to remove hardly biodegradable organic xenobiotic compounds such as pesticides and pharmaceuticals (Cheng et al, 2002;Matamoros et al, 2008Matamoros et al, , 2012aDordio et al, 2009bDordio et al, , 2010Avila et al, 2010;Hijosa-Valsero et al, 2011;Agudelo et al, 2012;Warsaw et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

“…A suitable choice of the latter is especially important for the removal of non-biodegradable compounds (including phenolic compounds, pharmaceuticals and pesticides) where sorption processes can play the major role in the wastewater treatment (Reddy and DeLaune, 2008;Imfeld et al, 2009;Ahmad et al, 2010;Passeport et al, 2011). In previous studies, light expanded clay aggregate (LECA) materials have been proven adequate for the development of plants and microorganisms in CWs and showed a high capacity to sorb many types of organic molecules (Dordio et al, 2007(Dordio et al, , 2009a(Dordio et al, , 2010Calheiros et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

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Constructed wetlands with light expanded clay aggregates for agricultural wastewater treatment

Dordio

Carvalho

2013

Science of The Total Environment

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This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues.Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited. H I G H L I G H T S• CW with LECA substrate and Phragmites plants tested with agricultural wastewaters.• High removals of TSS, COD, NH 4 -N, polyphenols, a pharmaceutical and a pesticide.• Contact time of wastewaters with beds ranged from 3 to 9days in batch conditions.• Promising results suggest more studies in full-scale and more realistic conditions. Constructed wetlands (CWs) are receiving a renewed attention as a viable phytotechnology for treating agricultural wastewaters and for the removal of more specific pollutants, in particular recalcitrant ones. In this work, the performance of CW mesocosms using light expanded clay aggregates (LECA) as the bed's substrate and planted with Phragmites australis was investigated for treatment of olive mill wastewater (OMW), swine wastewater (SW) contaminated with oxytetracycline and water contaminated with herbicide MCPA (2-methyl-4-chlorophenoxyacetic acid). Both wastewaters (OMW and SW) initially presented high organic matter content and total suspended solids which were removed by the system with efficiencies higher than 80%. Removal of polyphenols in OMW and nitrogen compounds in SW also showed similar or higher efficiencies in comparison with other treatment systems reported in the literature. The antibiotic oxytetracycline was completely removed from SW within the assay period in unplanted LECA beds, but planted beds allowed a significantly faster removal. In regard to water contaminated with MCPA, the results showed that LECA has a large sorption capacity for this herbicide (removal efficiencies of 56-97%). In general, considerably higher pollutant removal efficiencies were obtained when plants were used (up to 28% higher). The results obtained are indicative that CWs with LECA as substrate may be an adequate option for agricultural wastewater treatment. a b s t r a c t a r t i c l e i n f o

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Constructed wetlands with light expanded clay aggregates for agricultural wastewater treatment

Dordio

Carvalho

2013

Science of The Total Environment

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“…A variety of physical, chemical and biological processes such as sorption, biodegradation and photodegradation are associated with the removal of pharmaceuticals and EDCs in biologically-based wastewater treatments (Imfeld et al 2009;Matamoros et al 2008;White et al 2006). These processes, which can occur concurrently, depend on the physicochemical properties of the compound to be eliminated and on the internal plant metabolism when organic pollutants are uptaken by plants.…”

Section: Introductionmentioning

confidence: 99%

“…These biologically-based water reclamation systems are typically located after secondary wastewater units and can be almost as effective as advanced treatment systems whilst avoiding the disadvantages of advanced systems (Imfeld et al 2009;Matamoros and Salvadó 2012). A further advantage is that these systems efficiently eliminate certain pharmaceuticals (Hijosa-Valsero et al 2010;Li et al 2014;Matamoros et al 2012a).…”

Section: Introductionmentioning

confidence: 99%

The influence of Lemna sp. and Spirogyra sp. on the removal of pharmaceuticals and endocrine disruptors in treated wastewaters

Garcia-Rodríguez

Matamoros

Fontàs

et al. 2014

Int. J. Environ. Sci. Technol.

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The presence of pharmaceuticals and endocrine-disrupting chemicals (EDCs) in wastewater treatment plant effluents is an issue of great concern due to the negative effects that these compounds may have on human health and ecosystems. The present study aims to assess the capacity of two aquatic plants (Lemna sp. and Spirogyra sp.), commonly found in polishing ponds, for removing six pharmaceutical compounds (diclofenac, acetaminophen, ibuprofen, carbamazepine, clofibric acid, and propranolol), two EDCs (17a-ethinylestradiol and bisphenol A), and one stimulant (caffeine) under laboratory-scale conditions. Planted and unplanted reactors fed with secondary-treated wastewater or ultrapure water in both covered and uncovered conditions were studied. The highest removal efficiencies, which ranged from 31 to 100 %, were achieved in uncovered planted systems containing secondary-treated wastewater after 20 days of incubation. The results demonstrated that non-charged compounds with a log Kow between 2 and 4 were affected by the presence of vegetation, probably due to their plant uptake, whereas negatively charged compounds were not. This highlights that the presence of plants in polishing ponds plays an important role in the removal of pharmaceuticals and EDCs.

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“…Los humedales contribuyen a la atenuación de los niveles de pesticidas (Imfeld et al, 2009: Vymazal y Březinová, 2015 dependiendo de la tipología de estos.…”

Section: F) Mecanismos De Depuraciónunclassified

Contribuciones para el tratamiento de aguas residuales con sistemas alternativos de bajo coste. Aplicaciones para el desarrollo en poblaciones reducidas y cooperación

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Monitoring and assessing processes of organic chemicals removal in constructed wetlands

Cited by 309 publications

References 143 publications

Constructed wetlands with light expanded clay aggregates for agricultural wastewater treatment

Constructed wetlands with light expanded clay aggregates for agricultural wastewater treatment

The influence of Lemna sp. and Spirogyra sp. on the removal of pharmaceuticals and endocrine disruptors in treated wastewaters

Contribuciones para el tratamiento de aguas residuales con sistemas alternativos de bajo coste. Aplicaciones para el desarrollo en poblaciones reducidas y cooperación

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