F
Frederik Hammes
Researcher at Swiss Federal Institute of Aquatic Science and Technology
Publications - 119
Citations - 11423
Frederik Hammes is an academic researcher from Swiss Federal Institute of Aquatic Science and Technology. The author has contributed to research in topics: Water treatment & Water quality. The author has an hindex of 52, co-authored 116 publications receiving 9698 citations. Previous affiliations of Frederik Hammes include Ghent University.
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Behavior and stability of adenosine triphosphate (ATP) during chlorine disinfection.
TL;DR: In this paper, the authors investigated the behavior and stability of ATP during chlorination in detail and concluded that ATP released from bacteria at high chlorine doses could promote bacteria regrowth, contributing to biological instability in drinking water distribution systems.
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Competition of Escherichia coli O157 with a drinking water bacterial community at low nutrient concentrations.
TL;DR: The pathogen E. coli O157 was grown in competition with a drinking water bacterial community on natural assimilable organic carbon originating from diluted wastewater, in both batch and continuous culture, providing new insights into the principles governing competition of an enteric pathogen with autochthonous aquatic bacteria.
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Online flow cytometry reveals microbial dynamics influenced by concurrent natural and operational events in groundwater used for drinking water treatment.
Michael D. Besmer,Michael D. Besmer,Jannis Epting,Rebecca M. Page,Jürg A. Sigrist,Peter Huggenberger,Frederik Hammes +6 more
TL;DR: Monitoring microbial dynamics in a groundwater extraction well for the first time revealed both aperiodic and periodic dynamics that could not be detected previously, resulting in total cell concentration fluctuations between 120 and 280 cells μL−1.
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Short-term microbial dynamics in a drinking water plant treating groundwater with occasional high microbial loads.
TL;DR: This study provides strong evidence of multiple different microbial dynamics occurring in a drinking water treatment system, and the high-frequency monitoring approach presented herein can improve the understanding and eventual mitigation of such fluctuations.
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Molecular, biochemical and ecological characterisation of a bio-catalytic calcification reactor
TL;DR: BCC reactor evolution from initialisation to optimisation over a 6-week period was characterises, and it appears that the precipitation event is localised in a micro-environment, due to colonisation of crystal nucleation sites (calcareous sludge) by the precipitating organisms.