Untersuchungen zur Anwendung der Adsorptionsanalyse bei der Optimierung des Aktivkohleeinsatzes in Trinkwasserwerken. T. A und B Untersuchungen zur Adsorption von Spurenstoffen aus Modellgemischen und Oberflaechengewaessern. Untersuchungen zur Adsorption organischer Wasserinhaltstoffe an verschiedenen Aktivkohlen. Ermittlung und Anwendung von Adsorbentienkennlinien. Abschlussbericht

Adsorption processes for drinking water treatment are characterized by competitive adsorption of micropollutants and components of the unknown organic background. The adsorption behaviour of the organic background can be described by the adsorption analysis. Based on the adsorption analysis, a new calculation method for micropollutant adsorption in presence of background organic matter (TRACER model) was developed. This calculation model is a modification of the known IAS theory and gives a more exact description of the micropollutant adsorption in PAC (powdered activated carbon) and GAC (granular activated carbon) processes. Using the TRACER model, a better prognosis of the effectiveness of activated carbon adsorption for micropollutant removal is possible. Furthermore, it was shown that characteristic adsorbent curves, which correlate the Freundlich K-values of the adsorbent with the K-values of a reference carbon, can be estimated by use of the adsorption analysis. Based on these characteristic curves, a realistic comparison of different adsorbents is possible. The influence of the choice of the adsorbent type on the effectiveness of the adsorption process can be predicted. The report includes a detailed description of the theoretical fundamentals and the results of experimental investigations for verification of the calculation models. (orig.)SIGLEAvailable from TIB Hannover: F96B199+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Bildung, Wissenschaft, Forschung und Technologie, Bonn (Germany)DEGerman