Description: Das Projekt "Analyse und Schicksal von Betonzuschlagstoffen im Abwasser" wird vom Umweltbundesamt gefördert und von DVGW Deutscher Verein des Gas- und Wasserfaches e.V. - Technisch-wissenschaftlicher Verein - Technologiezentrum Wasser (TZW) durchgeführt. General Information: Through construction activities, large quantities of polymeric organic compounds used as concrete admixtures are potentially introduced into the environment. The majority of these chemicals are xeniobiotic sulfonated compounds such as sulfonated naphthalene-formaldehyde-condensates (SNFC), sulfonated melamine-formaldehyde-condensates (SMFC) and ligninsulfonates (LS). The proposed project aims to provide new and innovative analytical procedures for the determination of SNFC, SMFC, LS, related monomers and degradation products. As sensitive and specific analytical procedures for highly polar organic mircropollutants are still scarce, the procedures developed in the course of this project will have applications beyond the scope of the proposed study. The newly developed analytical tools will be applied to determine the occurrence of the above compounds in different wastewater streams, in receiving waters and in drinking water. Behaviour and fate of SNFC, SMFC, LS, related monomers and degradation products during wastewater treatment will be studied aiming at the identification of the relevant chemo dynamic processes. The project is organised into four interrelated work packages addressing the following areas: (i) Development of state-of-the art trace enrichment, separation and detection techniques using solid-phase extraction, high-performance liquid chromatography (HPLC), capillary electrophoresis (CE) and HPLC/mass spectrometry. (ii) Occurrence of SNFC, SMFC, LS, related monomers and degradation products primarily in wastewaters from different industrial and municipal sources as well as in receiving waters, concrete leachates, ground waters and drinking water. (iii) Mass balance of SNFC, SMFC, LS, related monomers and degradation products in different wastewater treatment plants, identification of processes relevant for their environmental fate and identification of possible wastewater disinfection by-products. (iv) Synthesis of the above results in a mass-flux and exposure analysis, leading to a basis for the assessment of environmental and human risks, identification of possible product liabilities and recommendations concerning the establishment of environmental and industrial standards. This project will contribute to the urgently needed scientifically sound basis for the environmental impact assessment of the most important concrete admixtures which are applied worldwide in vast and steadily increasing amounts. Prime Contractor: Universita Ca Foscari di Venezia, Dipartimento di Scienze Ambientali Environmental Chemistry Section; Venezia/Italy.
Types:
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Beton ? Melamin ? Abwasserdesinfektion ? Meteorologie ? Naphthalin ? Polymer ? Spektralphotometrie ? Umweltverträglichkeitsprüfung ? Formaldehyd ? Umweltchemie ? Abwasserbehandlung ? Abwasserbehandlungsanlage ? Chemische Analyse ? Chemische Zusammensetzung ? Flüssigkeitschromatografie ? Massenspektrometrie ? Sickerwasser ? Trinkwasseranalyse ? Umweltchemikalien ? Organische Verbindung ? Produktnorm ? Nebenprodukt ? Abwasseranalytik ? Risikoanalyse ? Chemikalien ? Stoffbilanz ? Studie ? Trennverfahren ? Trinkwasser ? Abbauprodukt ? Abwasser ? Elektrophorese ? Wasserverschmutzung ? Xenobiotikum ? Grundwasser ? Messverfahren ? Abwasserqualität ? Sicherheit ? Anreicherung ? Verpackung ? Gewässer ? Umweltschutz ? Risikobewertung ? LS ? Analytik ? Ligninsulfonat ? SMFC ? SNFC ?
Region: Baden-Württemberg
Bounding box: 9° .. 9° x 48.5° .. 48.5°
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 1997-12-01 - 2000-02-29
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