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Capacity of a horizontal subsurface flow constructed wetland system for the removal of emerging pollutants: an injection experiment.
Chemosphere. 2010 Nov; 81(9):1137-42.C

Abstract

A continuous injection experiment was implemented in a pilot-scale horizontal subsurface flow constructed wetland system to evaluate the behavior of four pharmaceuticals and personal care products (i.e. ibuprofen, naproxen, diclofenac and tonalide) and a phenolic estrogenic compound (i.e. bisphenol A). The treatment system consisted of an anaerobic reactor as a primary treatment, followed by two 0.65 m² wetlands (B1 and B2) working in parallel and connected to a 1.65 m² wetland (B3) operating in series. Overall removal efficiencies for the selected compounds ranged from 97% to 99%. The response curves of the injected pollutants show that the behavior of these compounds strongly depends on their sorption and biodegradation characteristics. While about 50% of ibuprofen was removed in B1 and B2, 99% was achieved at B3, where the dissolved oxygen concentration was significantly higher (B1-B2=0.5 mg L⁻¹ and B3=5.4 mg L⁻¹). Naproxen and diclofenac were efficiently removed (93%) in B1 and B2, revealing anaerobic degradation as a probable removal mechanism. Moreover, tonalide and bisphenol A were readily removed in the small wetlands (94% and 83%, respectively), where the removal of total suspended solids was 93%. Therefore, given their high hydrophobicity, sorption onto the particulate matter stands for the major removal mechanism. However, the tentative identification of carboxy-bisphenol A as an intermediate degradation product in B3 suggested biodegradation as a relevant bisphenol A removal pathway under aerobic prevailing conditions.

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Authors+Show Affiliations

Avila C
Environmental Engineering Division, Department of Hydraulic, Maritime and Environmental Engineering, Technical University of Catalonia, C/Jordi Girona 1-3, Barcelona, Spain. cristina.avila@upc.edu
Pedescoll A
No affiliation info available
Matamoros V
No affiliation info available
Bayona JM
No affiliation info available
García J
No affiliation info available

MeSH

Anti-Inflammatory Agents, Non-SteroidalDiclofenacEnvironmental Restoration and RemediationIbuprofenNaproxenPerfumeTetrahydronaphthalenesWaste Disposal, FluidWater MovementsWater Pollutants, ChemicalWetlands

Pub Type(s)

Evaluation Study
Journal Article

Language

eng

PubMed ID

20864142

Citation

Avila, Cristina, et al. "Capacity of a Horizontal Subsurface Flow Constructed Wetland System for the Removal of Emerging Pollutants: an Injection Experiment." Chemosphere, vol. 81, no. 9, 2010, pp. 1137-42.
Avila C, Pedescoll A, Matamoros V, et al. Capacity of a horizontal subsurface flow constructed wetland system for the removal of emerging pollutants: an injection experiment. Chemosphere. 2010;81(9):1137-42.
Avila, C., Pedescoll, A., Matamoros, V., Bayona, J. M., & García, J. (2010). Capacity of a horizontal subsurface flow constructed wetland system for the removal of emerging pollutants: an injection experiment. Chemosphere, 81(9), 1137-42. https://doi.org/10.1016/j.chemosphere.2010.08.006
Avila C, et al. Capacity of a Horizontal Subsurface Flow Constructed Wetland System for the Removal of Emerging Pollutants: an Injection Experiment. Chemosphere. 2010;81(9):1137-42. PubMed PMID: 20864142.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Capacity of a horizontal subsurface flow constructed wetland system for the removal of emerging pollutants: an injection experiment. AU - Avila,Cristina, AU - Pedescoll,Anna, AU - Matamoros,Víctor, AU - Bayona,Josep María, AU - García,Joan, Y1 - 2010/09/22/ PY - 2010/04/26/received PY - 2010/07/30/revised PY - 2010/08/03/accepted PY - 2010/9/25/entrez PY - 2010/9/25/pubmed PY - 2010/12/22/medline SP - 1137 EP - 42 JF - Chemosphere JO - Chemosphere VL - 81 IS - 9 N2 - A continuous injection experiment was implemented in a pilot-scale horizontal subsurface flow constructed wetland system to evaluate the behavior of four pharmaceuticals and personal care products (i.e. ibuprofen, naproxen, diclofenac and tonalide) and a phenolic estrogenic compound (i.e. bisphenol A). The treatment system consisted of an anaerobic reactor as a primary treatment, followed by two 0.65 m² wetlands (B1 and B2) working in parallel and connected to a 1.65 m² wetland (B3) operating in series. Overall removal efficiencies for the selected compounds ranged from 97% to 99%. The response curves of the injected pollutants show that the behavior of these compounds strongly depends on their sorption and biodegradation characteristics. While about 50% of ibuprofen was removed in B1 and B2, 99% was achieved at B3, where the dissolved oxygen concentration was significantly higher (B1-B2=0.5 mg L⁻¹ and B3=5.4 mg L⁻¹). Naproxen and diclofenac were efficiently removed (93%) in B1 and B2, revealing anaerobic degradation as a probable removal mechanism. Moreover, tonalide and bisphenol A were readily removed in the small wetlands (94% and 83%, respectively), where the removal of total suspended solids was 93%. Therefore, given their high hydrophobicity, sorption onto the particulate matter stands for the major removal mechanism. However, the tentative identification of carboxy-bisphenol A as an intermediate degradation product in B3 suggested biodegradation as a relevant bisphenol A removal pathway under aerobic prevailing conditions. SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/20864142/Capacity_of_a_horizontal_subsurface_flow_constructed_wetland_system_for_the_removal_of_emerging_pollutants:_an_injection_experiment_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(10)00884-2 DB - PRIME DP - Unbound Medicine ER -