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Occurrence and fate of oseltamivir carboxylate (Tamiflu) and amantadine in sewage treatment plants.

Identifieur interne : 000D85 ( Ncbi/Curation ); précédent : 000D84; suivant : 000D86

Occurrence and fate of oseltamivir carboxylate (Tamiflu) and amantadine in sewage treatment plants.

Auteurs : Gopal Chandra Ghosh [Japon] ; Norihide Nakada ; Naoyuki Yamashita ; Hiroaki Tanaka

Source :

RBID : pubmed:20692015

Descripteurs français

English descriptors

Abstract

We investigated the occurrence and fate of the two antiviral drugs oseltamivir carboxylate (OC)-the active metabolite of Tamiflu-and amantadine (AMT) at three sewage treatment plants (STPs) during the 2008-2009 and 2009-2010 influenza seasons in Japan. Both compounds were detected in all samples analyzed. The concentrations in raw influents at the STPs ranged from 140 to 460 ng L(-1) OC and from 184 to 538 ng L(-1) AMT. Primary treatment gave no substantial removal of the drugs (OC, 2-9%; AMT, 7-17%). Biological nutrient-removal-based secondary treatment (anoxic-oxic-anoxic-oxic and anaerobic-anoxic-oxic) removed 20-37% of OC, whereas extended-aeration-based conventional activated sludge treatment removed <20%. STPs using primary plus biological secondary treatment removed <50% of the drugs. The incorporation of tertiary treatment by ozonation removed >90%. Ozonation after secondary treatment in STPs will be necessary during an influenza pandemic to reduce the risks associated with the widespread use of antiviral drugs.

DOI: 10.1016/j.chemosphere.2010.07.023
PubMed: 20692015

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pubmed:20692015

Le document en format XML

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<div type="abstract" xml:lang="en">We investigated the occurrence and fate of the two antiviral drugs oseltamivir carboxylate (OC)-the active metabolite of Tamiflu-and amantadine (AMT) at three sewage treatment plants (STPs) during the 2008-2009 and 2009-2010 influenza seasons in Japan. Both compounds were detected in all samples analyzed. The concentrations in raw influents at the STPs ranged from 140 to 460 ng L(-1) OC and from 184 to 538 ng L(-1) AMT. Primary treatment gave no substantial removal of the drugs (OC, 2-9%; AMT, 7-17%). Biological nutrient-removal-based secondary treatment (anoxic-oxic-anoxic-oxic and anaerobic-anoxic-oxic) removed 20-37% of OC, whereas extended-aeration-based conventional activated sludge treatment removed <20%. STPs using primary plus biological secondary treatment removed <50% of the drugs. The incorporation of tertiary treatment by ozonation removed >90%. Ozonation after secondary treatment in STPs will be necessary during an influenza pandemic to reduce the risks associated with the widespread use of antiviral drugs.</div>
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