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Degradation of pharmaceuticals from membrane biological reactor sludge with Trametes versicolor

Emerging contaminants are a wide group of chemical products that are found at low concentrations in the environment. These contaminants can be either natural, e.g., estrogens, or synthetics, such as pesticides and pharmaceuticals, which can enter the environment through the water and sludge from wastewater treatment plants (WWTP). The growth of Trametes versicolor on membrane biological reactor (MBR) sludge in bioslurry systems at the Erlenmeyer scale was assessed and its capacity for removing pharmaceutical and personal care products (PPCPs) was evaluated. The ability of the fungus to remove hydrochlorothiazide (HZT) from liquid media cultures was initially assessed. Consequently, different bioslurry media (complete nutrient, glucose and no-nutrient addition) and conditions (sterile and non-sterile) were tested, and the removal of spiked HZT was monitored under each condition. The highest spiked HZT removal was assessed under non-sterile conditions without nutrient addition (93.2%). Finally, the removal assessment of a broad set of pharmaceuticals was performed in non-spiked bioslurry. Under non-sterile conditions, the fungus was able to completely degrade 12 out of the 28 drugs initially detected in the MBR sludge, achieving an overall degradation of 66.9%. Subsequent microbial analysis showed that the microbial diversity increased after 15 days of treatment, but there was still some T. versicolor in the bioslurry. Results showed that T. versicolor can be used to remove PPCPs in bioslurry systems under non-sterile conditions, without extra nutrients in the media, and in matrices as complex as an MBR sludge

This work has been supported by the Spanish Ministry of Economy and Competitiveness (projects CTQ2010-21776-C01 and CTQ2010-21776-C02), cofinanced by the European Union through the European Regional Development Fund (ERDF) and supported by the Generalitat de Catalunya (Consolidated Research Groups: Biodegradation of Industrial Pollutants and Waste Recovery Group -2009-SGR-656- and Catalan Institute for water Research – 2014 SGR 291)

© Environmental Sciences: Processes and Impacts, 2015, vol. 17, p. 429-440

Royal Society of Chemistry

Author: Llorens-Blanch, Guillem
Badia-Fabregat, Marina
Lucas, Daniel
Rodríguez Mozaz, Sara
Barceló i Cullerés, Damià
Pennanen, Taina
Caminal, Gloria
Blánquez, Paqui
Date: 2015 February 1
Abstract: Emerging contaminants are a wide group of chemical products that are found at low concentrations in the environment. These contaminants can be either natural, e.g., estrogens, or synthetics, such as pesticides and pharmaceuticals, which can enter the environment through the water and sludge from wastewater treatment plants (WWTP). The growth of Trametes versicolor on membrane biological reactor (MBR) sludge in bioslurry systems at the Erlenmeyer scale was assessed and its capacity for removing pharmaceutical and personal care products (PPCPs) was evaluated. The ability of the fungus to remove hydrochlorothiazide (HZT) from liquid media cultures was initially assessed. Consequently, different bioslurry media (complete nutrient, glucose and no-nutrient addition) and conditions (sterile and non-sterile) were tested, and the removal of spiked HZT was monitored under each condition. The highest spiked HZT removal was assessed under non-sterile conditions without nutrient addition (93.2%). Finally, the removal assessment of a broad set of pharmaceuticals was performed in non-spiked bioslurry. Under non-sterile conditions, the fungus was able to completely degrade 12 out of the 28 drugs initially detected in the MBR sludge, achieving an overall degradation of 66.9%. Subsequent microbial analysis showed that the microbial diversity increased after 15 days of treatment, but there was still some T. versicolor in the bioslurry. Results showed that T. versicolor can be used to remove PPCPs in bioslurry systems under non-sterile conditions, without extra nutrients in the media, and in matrices as complex as an MBR sludge
This work has been supported by the Spanish Ministry of Economy and Competitiveness (projects CTQ2010-21776-C01 and CTQ2010-21776-C02), cofinanced by the European Union through the European Regional Development Fund (ERDF) and supported by the Generalitat de Catalunya (Consolidated Research Groups: Biodegradation of Industrial Pollutants and Waste Recovery Group -2009-SGR-656- and Catalan Institute for water Research – 2014 SGR 291)
Format: application/pdf
ISSN: 2050-7887 (versió paper)
2050-7895 (versió electrònica)
Document access: http://hdl.handle.net/10256/12608
Language: eng
Publisher: Royal Society of Chemistry
Collection: MINECO/PN 2010-2013/CTQ2010-21776
Reproducció digital del document publicat a: http://dx.doi.org/10.1039/c4em00579a
Articles publicats (ICRA)
Is part of: © Environmental Sciences: Processes and Impacts, 2015, vol. 17, p. 429-440
Rights: Tots els drets reservats
Subject: Contaminants emergents en l’aigua
Emerging contaminants in water
Aigua -- Contaminació
Water -- Pollution
Aigües residuals -- Depuració
Sewage -- Purification
Title: Degradation of pharmaceuticals from membrane biological reactor sludge with Trametes versicolor
Type: info:eu-repo/semantics/article
Repository: DUGiDocs

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