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Author(s): Bessa V.S.
Moreira I.S.
Tiritan M.E.
Castro P.M.L.
Title: Enrichment of bacterial strains for the biodegradation of diclofenac and carbamazepine from activated sludge
Publisher: Elsevier
Issue Date: 2017
Abstract: Carbamazepine and diclofenac have been pointed out as important markers for environmental pollution by pharmaceuticals. This study reports on the isolation of bacterial strains capable to degrade these micropollutants from activated sludge of a municipal wastewater treatment plant (WWTP). After selective enrichments, one strain able to degrade diclofenac and two strains able to degrade carbamazepine were isolated. The strains were identified by 16S rRNA gene sequencing. Strain Brevibacterium sp. D4 was able to biodegrade 35% of 10 mg L−1 of diclofenac as a sole carbon source; periodic feeding with acetate as a supplementary carbon source resulted in enhancing biodegradation to levels up to 90%, with a concomitant increase of the biodegradation rate. Strains Starkeya sp. C11 and Rhizobium sp. C12 were able to biodegrade 30% of 10 mg L−1 of carbamazepine as a sole carbon source; supplementation with acetate did not improve the biodegradation of carbamazepine by these strains. The activated sludge harboured bacteria capable to degrade the two top priority environmental contaminants and may be potentially useful for biotechnological applications. © 2017 Elsevier
Subject: Activated sludge process
Drug products
Wastewater treatment
16S rRNA gene sequencing
Biotechnological applications
Environmental contaminant
Environmental pollutions
Municipal wastewater treatment plants
Selective enrichment
activated sludge
environmental fate
genetic analysis
pollutant removal
wastewater treatment plant
Bacteria (microorganisms)
Brevibacterium sp.
Rhizobium sp. c12
Source: International Biodeterioration and Biodegradation, vol. 120, p. 135-142
Related Information: info:eu-repo/grantAgreement/FCT/5876/147268/PT
Document Type: Artigo em Revista Científica Internacional
Rights: restrictedAccess
Appears in Collections:CIIMAR - Artigo em Revista Científica Internacional

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