Jessica Richard

Jessica Richard

PhD

About

17
Publications
3,645
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648
Citations

Publications

Publications (17)
Article
The aim of this interdisciplinary research project in North Rhine-Westphalia (NRW), Germany, entitled “Elimination of pharmaceuticals and organic micropollutants from waste water” involved the conception of cost-effective and innovative waste-water cleaning methods. In this project in vitro assays, in vivo assays and chemical analyses were performe...
Article
The viable but non-culturable (VBNC) state of the opportunistic bacterium Pseudomonas aeruginosa was previously shown to be induced by copper ions in concentrations relevant to those in drinking water plumbing systems. This decrease of bacterial culturability without loss of viability might have an influence on human health due to an underestimatio...
Poster
Full-text available
Pharmaceuticals and their metabolites enter the hydrological cycle mainly through hospital effluents and private households. They were detected in surface and ground water in concentrations to μg/L and even after the water treatment process in drinking water. To gain biologically and chemically save conditions in aquatic systems, as required by the...
Poster
Full-text available
In case problematic organic substances, like pharmaceuticals and personal care products, cannot be eliminated during wastewater treatment, they can reach surface waters and harm the environment and have adverse effects on human health already at low concentrations of the substance. The amount of micropollutants in surface waters is steadily growing...
Article
Thousands of organic micropollutants and their transformation products occur in water. Although often present at low concentrations, individual compounds contribute to mixture effects. Cell-based bioassays that target health-relevant biological endpoints may therefore complement chemical analysis for water quality assessment. The objective of this...
Article
The entry of pharmaceuticals into the water cycle from sewage treatment plants is of growing concern because environmental effects are evident at trace levels. Ozonation, UV- and UV/H2O2-treatment were tested as an additional step in waste water treatment because they have been proven to be effective in eliminating aqueous organic contaminants. The...
Article
The amount of organic micropollutants detected in surface waters increases steadily. Common waste water treatment plants are not built to remove these substances. Thus there is a need for new technologies. A promising technology is the use of advanced oxidation processes through which organic micropollutants can be removed from waste water. However...
Article
The fate in wastewater treatment of gadolinium chelates used in increasing amounts as contrast agents in magnetic resonance imaging recently got into the focus of research. Oxidative processes, in particular the application of ozone, are currently discussed or even implemented for advanced wastewater treatment. However, reactions of the gadolinium...
Article
Triclosan is an antimicrobial agent widely used in many household and personal care products. Widespread use of this compound has led to the elevated concentrations of triclosan in wastewater, wastewater treatment plants and receiving waters. In this study removal of triclosan by aqueous ozone was investigated and the degradation products formed du...
Article
Full-text available
The biochemical transformation of mercury, tin, arsenic and bismuth through formation of volatile alkylated species performs a fundamental role in determining the environmental processing of these elements. While the toxicity of inorganic forms of most of these compounds are well documented (e.g., arsenic, mercury) and some of them are of relativel...
Article
The reaction of the fragrance compounds 4,6,6,7,8,8-hexamethyl-1,3,4,7-tetrahydrocyclopenta[g]isochromene (HHCB), 1-(3,5,5,6,8,8-hexamethyl-6,7-dihydronaphthalen-2-yl)ethanone (AHTN), 1-tert-butyl-3,5-dimethyl-2,4,6-trinitrobenzene (musk xylene/MX), 1-(4-tert-butyl-2,6-dimethyl-3,5-dinitrophenyl)ethanone (musk ketone/MK), and 1-(2,3,8,8-tetramethyl...
Poster
Full-text available
-Distribution of invasive aquatic organisms through ballast water uptake and release -Increasing amounts of drug residues and biocides in surface waters •Are advanced oxidation processes (AOP) sufficient in the disinfection of ballast water? -Are drugs and biocides in the water a possible source for toxic by-products formed during oxidative treatme...
Article
Copper plumbing materials can be the source of copper ions in drinking water supplies. The aim of the current study was to investigate the influence of copper ions on the viability and cytotoxicity of the potential pathogen Pseudomonas aeruginosa that presents a health hazard when occurring in building plumbing systems. In batch experiments, exposu...
Poster
Full-text available
Apart from UV oxidation with and without H2O2, ozone is nowadays one of the most used oxidants in water treatment processes worldwide. These oxidants might easily undergo reactions with compounds still present in the water after advanced oxidation processes resulting in the formation of oxidation byproducts. Therefore this study was designed to ev...

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Project (1)