Abstract: Exchange-discharge bodies provided with reactive material, especially for ace-material concentration from large water masses. The exchange bodies comprise a mechanically stable outer contour, and have a fluid accessible reactive upper surface protected against mechanical access by adjacent bodies.

Abstract: Method of and apparatus for concentration of trace material from large voes of water. Carrier bodies having a lower density than that of water are introduced into a water layer, especially a natural sea current or stream; these carrier bodies are collected again after an automatic traversal of the sea flow or water layer under conditions determined by density differing from that of water. The carrier bodies are loaded and charged by depositing or accumulation of trace material, e.g. uranium concentration, on the carrier bodies. The carrier bodies are then conveyed to a further treatment location for isolating the accumulated and concentrated trace material. The carrier bodies are then again discharged into the flow or stream after being depleted.

Abstract: A method for recovering uranium ions from sea water utilizing an adsorbent atrix. The materials contained in the matrix comprise biologically recent humic acids. Matter which serves as carrier material for the humic acids is present in the dry state up to 99% by weight.

Abstract: A method of producing a matrix of micro-organisms for extracting and gaining uranium from sea water, according to which the matrix is made of micro-organisms occurring in nature that are exposed to x-ray irradiations. These predetermined micro-organisms accordingly form colonies or threads and are filtered easily and cultivated. These micro-organisms accordingly form colonies or threads and are filtered easily and cultivated. These micro-organisms have a ratio of surface to volume that is relatively high. Subsequently, the thus irradiated micro-organisms are placed on a nutrient medium rich in uranium and are left there until colonies are formed. Thereupon, the surviving colonies of mutants are inoculated in a nutrient solution, and are then cultivated to produce the matrix.

Abstract: A matrix of algae mutants and method of obtaining thereby uranium from sea water, according to which a matrix is prepared of uranium compatible algae mutants suitable for picking up uranium dissolved in sea water, which matrix is then placed in an area of the sea in which low and high tides pass streams of sea water through the above mentioned matrix.