Untersuchungen zur adsorptiven Abtrennung von leichtflüchtigen chlorierten Kohlenwasserstoffen (LCKW) aus huminstoffhaltigen Wässern mit neuartigen Adsorberpolymeren und Aktivkohlen. Teil II:: Dynamik der Adsorption

Investigations of the Adsorptive Separation of Volatile Chlorinated Hydrocarbons (VCHC) from Water with Humic Substance by Novel Polymeric Adsorbents and Activated Carbons. Part II: Dynamics of Adsorption In this publication, the dynamics of adsorption of different volatile chlorinated hydrocarbons (VCHC) (1,2-dichloroethane, 1,1,1-trichloroethane, trichloroethene) and a humic substance from water as well as of these VCHC from water with humic substance onto novel polymeric ad-[QJ][HR] sorbents (WOFATIT EP 63, DOWEX XUS 43493, MACRONET MN 100 and MN 200) was studied in comparison to activated carbons (NORIT ROW 0.8 SUPRA, PRECOLITH BKK 3, HYDRAFFIN CG). The obtained breakthrough curves and the following predicted characteristic values reveal that the polymeric adsorbents do not remove or remove the humic substance only with low adsorption capacity in contrast to the activated carbons. At the adsorption of the VCHC from water with humic substance it was determined that the influence of the humic substance on the adsorption capacity is substantially less on polymeric adsorbents than on activated carbons.     

Zur Adsorption von Dichlormethan und 1,1,1-Trichlorethan aus Modellabwässern mit Adsorberpolymeren und Aktivkohlen

Adsorption of Dichloromethane and 1,1,1-Trichloroethane from Synthetic Wastewaters with Polymeric Adsorbents and Activated Carbons Isotherms, kinetics, and dynamics of adsorption of dichloromethane and 1,1,1-trichloroethane from synthetic wastewaters onto novel polymeric adsorbents were investigated in comparison to traditional polymeric adsorbents and activated carbons. The polymeric adsorbents and the activated carbons showed no large differences in adsorption kinetics, whereas the novel, crosslinked polymeric adsorbents exhibited at times higher adsorption capacities than the traditional, not crosslinked polymeric adsorbents and activated carbons.     

Vergleich von traditionellen und neuartigen Adsorberpolymeren bei der Adsorption von 1,2-Dichlorethan aus Wasser

Comparison of Traditional and Novel Polymeric Adsorbents with Regard to the Adsorption of 1,2-Dichloroethane from Water The adsorption of 1,2-dichloroethane from water onto traditional and novel polymeric adsorbents was studied in this publication. It was found that the novel (cross-linked) polymeric adsorbents have a higher loading than the traditional (not crosslinked) polymeric adsorbents. The main reason for that is the larger specific surface. There is no remarkable difference between the crosslinked and not crosslinked polymeric adsorbents due to the kinetics of adsorption.