Determination of selected pharmaceuticals and caffeine in sewage and seawater from Tromsø/Norway with emphasis on ibuprofen and its metabolites

Weigel, Stefan; Berger, Urs; Jensen, Einar; Kallenborn, Roland; Thoresen, Hilde; Hühnerfuß, Heinrich

doi:10.1016/j.chemosphere.2004.04.015

Cited by 419 publications

(208 citation statements)

References 24 publications

Supporting

Mentioning

168

Contrasting

Unclassified

Order By: Relevance

“…Even if DEET can be efficiently abated through advanced oxidation processes (AOPS) methods such as Fenton (Zhang et al, 2006;Zhang et al, 2007) and ozone treatment (Snyder et al, 2006), it was found at trace level in surface waters, groundwater and waters for human consumption (Sandstrom et al, 2005;Kolpin et al, 2004;Langford et al, 2008;Costanzo et al, 2007). DEET presence was detected in USA rivers, at an average concentration of 0.05 μg/L (Sandstrom et al, 2005); into 97% of surface waters in Australian Eastern coast at an average concentration of 0.093μg/L (Costanzo et al, 2007); in Europe, across river Rhine at concentration ranging from 15 to 30 ng/L (Schwarzbauer et al, 2005 Quednow and Püttmann, 2009), across Norway coast at concentrations 0.4-13 ng/L (Langford et al, 2008;Weigel et al, 2004), and in the North Sea, where it is considered as a ubiquitous pollutant with an average concentration of 1.1 ng/L in summertime (Weigel et al 2002).…”

Section: Introductionmentioning

confidence: 98%

N,N-diethyl-m-toluamide transformation in river water

Calza

Medana

Raso

et al. 2011

Science of The Total Environment

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 98%

N,N-diethyl-m-toluamide transformation in river water

Calza

Medana

Raso

et al. 2011

Science of The Total Environment

View full text Add to dashboard Cite

“…Mecoprop D-3 and di-hydrocarbamazepine were added as internal standards (c = 100 ng L À1 ) to correct for losses during solid phase extractions (Weigel et al, 2004;Radjenović et al, 2007). Samples were then enriched using Oasis HLB 60 mg cartridges from Waters.…”

Section: Methodsmentioning

confidence: 99%

Active heterotrophic biomass and sludge retention time (SRT) as determining factors for biodegradation kinetics of pharmaceuticals in activated sludge

Majewsky

Gallé

Yargeau

et al. 2011

Bioresource Technology

View full text Add to dashboard Cite

a b s t r a c tThe present study investigates the biodegradation of pharmaceutically active compounds (PhACs) by active biomass in activated sludge. Active heterotrophs (X bh ) which are known to govern COD removal are suggested as a determining factor for biological PhAC removal as well. Biodegradation kinetics of five polar PhACs were determined in activated sludge of two wastewater treatment plants which differed in size, layout and sludge retention time (SRT).Results showed that active fractions of the total suspended solids (TSS) differed significantly between the two sludges, indicating that TSS does not reveal information about heterotrophic activity. Furthermore, PhAC removal was significantly faster in the presence of high numbers of heterotrophs and a low SRT. Pseudo first-order kinetics were modified to include X bh and used to describe decreasing PhAC elimination with increasing SRT.

show abstract

“…DEET is an active compound in most ticks and insect repellents which functions as a blocker to insect's chemoreceptor that senses carbon dioxide and lactic acid in locating their host (Fradin 1998). Due to its wide use, contaminations of DEET in aquatic environment such as streams (Kolpin et al 2004), seawater (Weigel et al 2002(Weigel et al , 2004, sewage plant effluents (Weigel et al 2004), and even drinking water (Stackelberg et al 2004) have been extensively reported. Although the removal of DEET by ozonation (Tay et al 2009), photoinduced processes (Medana et al 2010), and anodic Fenton treatment Lemley 2006, 2007) has been reported, the treatment of DEET by SO 4 -Á has not been evaluated.…”

Section: Introductionmentioning

confidence: 99%

Chemical oxidation of N,N-diethyl-m-toluamide by sulfate radical-based oxidation: kinetics and mechanism of degradation

Tay

Rahman

Abas

2012

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

A study was undertaken in order to understand the kinetics and mechanism of the chemical oxidation of N,N-diethyl-m-toluamide, an insect repellent, by sulfate radical. In this experiment, sulfate radical was generated using peroxymonosulfate with iron(II) and cobalt(II) as activator. The second-order rate constant for the reaction of the sulfate radical with N,N-diethyl-m-toluamide was found to be (1.9 ± 0.1) 9 10 9 M -1 s -1 at pH 7 and a temperature of 25°C. Experiments for the chemical oxidation of N,N-diethyl-m-toluamide in river water and secondary wastewater revealed that the percentage of the removal of N,N-diethyl-m-toluamide was slightly influenced by the water matrices. However, the selected oxidation systems are not effective for the removal of N,N-diethyl-mtoluamide in seawater. Transformation by-products of N,N-diethyl-m-toluamide generated using peroxymonosulfate/iron(II) sulfate, peroxymonosulfate/iron(II) chloride, peroxymonosulfate/cobalt(II) sulfate and peroxymonosulfate/cobalt(II) chloride systems were identified. The results indicated that there are slight differences in the distributions of the transformation by-products detected depending on the activator. The common transformation by-products detected in all selected oxidation systems areMonohydroxylated N,N-diethyl-m-toluamide were detected only when the peroxymonosulfate/iron(II) system was applied. For the peroxymonosulfate/cobalt(II) systems, additional isomers of monohydroxylated N-ethyl-m-toluamide were detected. Peroxymonosulfate/cobalt(II) also transformed 2-(diethylamino)-1-m-tolylethanone into N-ethyl-N-(2-oxo-2-m-tolylethyl)acetamide and monohydroxylated 2-(ethyl(vinyl)amino)-1-m-tolylethanone as transformation by-products.

show abstract

Determination of selected pharmaceuticals and caffeine in sewage and seawater from Tromsø/Norway with emphasis on ibuprofen and its metabolites

Cited by 419 publications

References 24 publications

N,N-diethyl-m-toluamide transformation in river water

N,N-diethyl-m-toluamide transformation in river water

Active heterotrophic biomass and sludge retention time (SRT) as determining factors for biodegradation kinetics of pharmaceuticals in activated sludge

Chemical oxidation of N,N-diethyl-m-toluamide by sulfate radical-based oxidation: kinetics and mechanism of degradation

Contact Info

Product

Resources

About