Thomas P Knepper

Summary

Affiliation: ESWE-Institute for Water Research and Water Technology
Country: Germany

Publications

  1. ncbi Analysis and mass spectrometric characterization of the insect repellent Bayrepel and its main metabolite Bayrepel-acid
    Thomas P Knepper
    Europe University for Applied Sciences Fresenius, Limburger Strasse 2, D 65510 Idstein, Germany
    J Chromatogr A 1046:159-66. 2004
  2. ncbi Biodegradation of persistent polar pollutants in wastewater: comparison of an optimised lab-scale membrane bioreactor and activated sludge treatment
    Marco Bernhard
    Europa University of Applied Sciences Fresenius, Limburger Strasse 2, D-65510 Idstein, Germany
    Water Res 40:3419-28. 2006
  3. ncbi Analysis and fate of insect repellents
    T P Knepper
    ESWE Institute for Water Research and Water Technology, D 65203 Wiesbaden, Kurfuerstenstrasse 6, Germany
    Water Sci Technol 50:301-8. 2004
  4. ncbi Removal of persistent polar pollutants through improved treatment of wastewater effluents (P-THREE)
    T P Knepper
    ESWE Institute for Water Research and Water Technology, 65203 Wiesbaden, Kurfuerstenstrasse 6, Germany
    Water Sci Technol 50:195-202. 2004
  5. ncbi Polar organic pollutants in groundwater: experimental approaches to biodegradation during subsoil passage
    Thomas P Knepper
    ESWE Institute for Water Research and Water Technology, D 65201 Wiesbaden, Germany
    ScientificWorldJournal 2:1243-6. 2002
  6. ncbi Mass spectrometric strategies for the analysis of polar industrial chemicals and their by-products in wastewater and surface water
    Thomas P Knepper
    University of Twente, Department of Chemical Analysis and MESA Research Institute, PO Box 217, 7500 AE Enschede, The Netherlands
    J Chromatogr A 974:111-21. 2002
  7. ncbi Investigations on the metabolism of alkyl polyglucosides and their determination in waste water by means of liquid chromatography-electrospray mass spectrometry
    P Eichhorn
    ESWE Institute for Water Research and Water Technology, Wiesbaden, Germany
    J Chromatogr A 854:221-32. 1999
  8. ncbi Unknown bisethylisooctanollactone isomers in industrial waste water. Isolation, identification and occurrence in surface water
    T P Knepper
    ESWE Institute for Water Research and Water Technology, Wiesbaden, Germany
    J Chromatogr A 889:245-52. 2000
  9. ncbi The behavior of polar aromatic sulfonates during drinking water production: a case study on sulfophenyl carboxylates in two European waterworks
    Peter Eichhorn
    ESWE Institute for Water Research and Technology, Wiesbaden, Germany
    Water Res 36:2179-86. 2002
  10. ncbi Analysis, fate studies and monitoring of the antifungal agent clotrimazole in the aquatic environment
    Manuela Peschka
    Europa University of Applied Sciences Fresenius, Limburger Strasse 2, 65510 Idstein, Germany
    Anal Bioanal Chem 389:959-68. 2007

Collaborators

  • D Barcelo
  • Thorsten Reemtsma
  • Frank Sacher
  • Paul H Roberts
  • Susana Gonzalez
  • Manuela Peschka
  • Peter Eichhorn
  • David Schleheck
  • Marco Bernhard
  • Alasdair M Cook
  • Kornprabha Kruawal
  • Wolfgang Hierse
  • P Eichhorn
  • Elvira Montenegro
  • Tobias Frömel
  • Norbert Fichtner
  • Melanie Kleineidam
  • Jan P Eubeler
  • Andreas Werner
  • Karin Fischer
  • Wolfram Baumann
  • Alfredo Diaz
  • Francesc Ventura
  • Silvana V Rodrigues

Detail Information

Publications20

  1. ncbi Analysis and mass spectrometric characterization of the insect repellent Bayrepel and its main metabolite Bayrepel-acid
    Thomas P Knepper
    Europe University for Applied Sciences Fresenius, Limburger Strasse 2, D 65510 Idstein, Germany
    J Chromatogr A 1046:159-66. 2004
    ..Various chromatographic and mass spectrometric techniques, such as gas chromatography-mass spectrometry (MS) after derivatization, liquid chromatography (LC)-electrospray ionization (ESI) MS and LC-ESI time-of-flight MS were applied...
  2. ncbi Biodegradation of persistent polar pollutants in wastewater: comparison of an optimised lab-scale membrane bioreactor and activated sludge treatment
    Marco Bernhard
    Europa University of Applied Sciences Fresenius, Limburger Strasse 2, D-65510 Idstein, Germany
    Water Res 40:3419-28. 2006
    ..An application of such an in terms of sludge retention time optimised MBR may lead to a reduction of these P(3) in the watercycle...
  3. ncbi Analysis and fate of insect repellents
    T P Knepper
    ESWE Institute for Water Research and Water Technology, D 65203 Wiesbaden, Kurfuerstenstrasse 6, Germany
    Water Sci Technol 50:301-8. 2004
    ..Since the year 2000 Bayrepel could also be detected during the summer months in the influents of WWTP, whereas in the effluents Bayrepel was not present...
  4. ncbi Removal of persistent polar pollutants through improved treatment of wastewater effluents (P-THREE)
    T P Knepper
    ESWE Institute for Water Research and Water Technology, 65203 Wiesbaden, Kurfuerstenstrasse 6, Germany
    Water Sci Technol 50:195-202. 2004
    ..The analysis of individual P3 and potential degradation products was also performed. An integrated systeme analysis of the WW treatment processes has also been initiated...
  5. ncbi Polar organic pollutants in groundwater: experimental approaches to biodegradation during subsoil passage
    Thomas P Knepper
    ESWE Institute for Water Research and Water Technology, D 65201 Wiesbaden, Germany
    ScientificWorldJournal 2:1243-6. 2002
    ..The results from the laboratory degradation experiments are compared to findings in groundwater...
  6. ncbi Mass spectrometric strategies for the analysis of polar industrial chemicals and their by-products in wastewater and surface water
    Thomas P Knepper
    University of Twente, Department of Chemical Analysis and MESA Research Institute, PO Box 217, 7500 AE Enschede, The Netherlands
    J Chromatogr A 974:111-21. 2002
    ....
  7. ncbi Investigations on the metabolism of alkyl polyglucosides and their determination in waste water by means of liquid chromatography-electrospray mass spectrometry
    P Eichhorn
    ESWE Institute for Water Research and Water Technology, Wiesbaden, Germany
    J Chromatogr A 854:221-32. 1999
    ..Recovery rates were in the range of 66 to 98% for three spiked alkyl monoglucosides and a quantitation limit of 0.2 microg l(-1) was achieved...
  8. ncbi Unknown bisethylisooctanollactone isomers in industrial waste water. Isolation, identification and occurrence in surface water
    T P Knepper
    ESWE Institute for Water Research and Water Technology, Wiesbaden, Germany
    J Chromatogr A 889:245-52. 2000
    ....
  9. ncbi The behavior of polar aromatic sulfonates during drinking water production: a case study on sulfophenyl carboxylates in two European waterworks
    Peter Eichhorn
    ESWE Institute for Water Research and Technology, Wiesbaden, Germany
    Water Res 36:2179-86. 2002
    ..Subsequent subsoil passage resulted only in a slight elimination, but once again a slow sand filtration prior to the closing chlorination substantially removed the polar micro-pollutants down to a level of <0.05 microg L(-1) SPC...
  10. ncbi Analysis, fate studies and monitoring of the antifungal agent clotrimazole in the aquatic environment
    Manuela Peschka
    Europa University of Applied Sciences Fresenius, Limburger Strasse 2, 65510 Idstein, Germany
    Anal Bioanal Chem 389:959-68. 2007
    ....
  11. ncbi Parvibaculum lavamentivorans DS-1T degrades centrally substituted congeners of commercial linear alkylbenzenesulfonate to sulfophenyl carboxylates and sulfophenyl dicarboxylates
    David Schleheck
    Department of Biology, The University of Konstanz, Universitätsstr 10, Konstanz, Germany
    Appl Environ Microbiol 73:4725-32. 2007
    ..e., 33 SPC and SPC-2H species), and about 17 SPdC species. A large array of compounds, many in low quantities, is thus generated by P. lavamentivorans DS-1 during the degradation of commercial LAS...
  12. ncbi Occurrence and fate of barbiturates in the aquatic environment
    Manuela Peschka
    Europa University of Applied Sciences Fresenius, Limburger Strasse 2, D-65510 Idstein, Germany
    Environ Sci Technol 40:7200-6. 2006
    ....
  13. ncbi Mechanistic studies in biodegradation of the new synthesized fluorosurfactant 9-[4-(trifluoromethyl)phenoxy]nonane-1-sulfonate
    Manuela Peschka
    University of Applied Sciences Fresenius, Limburger Strasse 2, 65510 Idstein, Germany
    J Chromatogr A 1187:79-86. 2008
    ..However, some intermediates, depending on the position of hydroxylation, impede further mineralization...
  14. ncbi Chemical water quality in Thailand and its impacts on the drinking water production in Thailand
    Kornprabha Kruawal
    Department of Biotechnology, Faculty of Science, Burapha University, Chonburi 20131, Thailand
    Sci Total Environ 340:57-70. 2005
    ..The data of this study constitute the first set of homogenous data for the chemical water quality and also aid development of new water quality criteria in Thailand...
  15. ncbi Alpha,beta-unsaturated sulfophenylcarboxylates as degradation intermediates of linear alkylbenzenesulfonates: evidence for omega-oxygenation followed by beta-oxidations by liquid chromatography-mass spectrometry
    Peter Eichhorn
    ESWE-Institute for Water Research and Water Technology, Wiesbaden, Germany
    Environ Toxicol Chem 21:1-8. 2002
    ....
  16. ncbi Incomplete degradation of linear alkylbenzene sulfonate surfactants in Brazilian surface waters and pursuit of their polar metabolites in drinking waters
    Peter Eichhorn
    ESWE-Institute for Water Research and Water Technology, Wiesbaden, Germany
    Sci Total Environ 284:123-34. 2002
    ....
  17. ncbi Biodegradation studies of selected priority acidic pesticides and diclofenac in different bioreactors
    Susana Gonzalez
    Department of Environmental Chemistry, IIQAB CSIC, Jordi Girona 18 26, 08034, Barcelona, Spain
    Environ Pollut 144:926-32. 2006
    ..Comparing these results with the degradation rates in the FBBR showed that in the latter only MCPP, MCPA 2,4-D and 2,4-DP were degraded after a much longer adaptation phase of microorganisms...
  18. ncbi Polar pollutants entry into the water cycle by municipal wastewater: a European perspective
    Thorsten Reemtsma
    Department of Water Quality Control, Technical University of Berlin, Sekr KF 4, Strasse des 17 Juni 135, 10623 Berlin, Germany
    Environ Sci Technol 40:5451-8. 2006
    ..Polar pollutants in surface water samples of different catchments showed increasing concentration for compounds with increasing WCSI...
  19. ncbi Mineralization of individual congeners of linear alkylbenzenesulfonate by defined pairs of heterotrophic bacteria
    David Schleheck
    Department of Biology, The University of Konstanz, , D-78457 Konstanz, Germany
    Appl Environ Microbiol 70:4053-63. 2004
    ..A three-member community consisting of strains DS-1(T), SPB-2, and SPH-1 utilized four major SPCs. We inferred that this community mineralized the major SPCs derived from 8 of the 20 LAS congeners...
  20. ncbi Determination of synthetic chelating agents in surface and waste water by ion chromatography-mass spectrometry
    Thomas P Knepper
    Europa University for Applied Sciences Fresenius, Idstein, Germany
    J Chromatogr A 1085:240-6. 2005
    ..The method was validated against certified, but more time consuming routine methods. Applying this method a series of several European water samples were analyzed for EDTA and DTPA indicating their nature as polar persistent pollutants...