Abstract: The invention concerns a method of removing substances present in water, in particular halogen-oxygen compounds which remain in the water as residues of disinfecting or are formed as by-products of oxidative water treatment. According to the invention, the substances present in water are removed by catalytic reduction in the presence of hydrogen on a supported precious metal catalyst.

Abstract: In a process for the catalytic treatment of aqueous liquids containing germs, for example, for the catalytic removal of oxygen, nitrite or nitrate in drinking, culinary or waste water, the germ contamination of a catalysts which are used can be prevented when the process is carried out in the fluidized bed.

Abstract: The description relates to a particularly abrasion-resistant catalyst carrier of special activated aluminum oxide. The aluminum oxide consists of either the "gamma" or the "kappa" modification and has no "delta" modification, or it consists of the "kappa" and "theta" modifications and has no "alpha" modification. Carrier catalysts which contain catalytically active metals and/or metal compounds on the abrasion-resistant carrier are especially suitable for use in fluidized bed processes.

Abstract: A process for degerminating and treating aqueous liquids with gas having improved efficiency and an apparatus for simultaneously degerminating and gas treating liquids are described.

Abstract: A method of using rubber, preferably from tire recycling, for absorbing organic carboxylic acids containing from 1 to 3 carbon atoms optionally substituted with from 1 to 5 halogen atoms. Trifluoroacetic acid, for example, can be absorbed very effectively.

Abstract: A catalyst is disclosed made from a porous inorganic carrier material impregnated with a metal component selected from palladium, rhodium, mixtures of palladium and rhodium, and mixtures of palladium and a metal of the copper group, in which the carrier has a bimodal pore radius distribution with a first pore radius distribution maximum in the range of up to 400 .ANG., preferably 50 to 350 .ANG., and with a proportion of at least 20%, relative to the overall pore volume, of macropores having a radius of at least 2,000 .ANG., preferably 5,000 to 20,000 .ANG..