There are two ways of dealing with the problem of nuclear waste. The first one is the easiest but not the most sensible: you can simply bury nuclear waste products and try to forget about them. However, this way does not seem to be the most rational. It seems much more attractive to try to derive some benefit from the situation. In this case it is worth extracting the compounds that could be used in future from the whole mass of nuclear wastes. In the first instance, these are non-burnt uranium and plutonium. These components of nuclear fuel can be returned into nuclear reactors. Moreover, it is necessary to extract radionuclides, which can find their further application because these compounds of nuclear wastes, as the scientists say, "contain the whole periodic table". And all the remaining nuclear substances should be divided into fractions according to their lifetime: long-lived, short-lived, and stable. How to solve the task?
According to the existing technology all this nuclear rubbish should be dissolved on the first stage and only then the useful compounds are extracted from the solution in succession. An organic solvent is usually used for this purpose. However, the extractant used in industry does not identify many compounds.
Chemists and technologists under the supervision of Professor Zilberman have thought up how to divide nuclear waste products into separate fractions. The researchers could extract from the whole mass not only pure uranium and plutonium but also extremely dangerous radionuclides separately. The secret is in the addition to the extractant discovered by the scientists. It enables extracting all the necessary compounds effectively and selectively on particular stages of processing. It is also very important that the technology can be applied to the industrial process using standard equipment that should be just modified.
Tatiana Pitchugina | alphagalileo
Dispersal of Fish Eggs by Water Birds – Just a Myth?
19.02.2018 | Universität Basel
Removing fossil fuel subsidies will not reduce CO2 emissions as much as hoped
08.02.2018 | International Institute for Applied Systems Analysis (IIASA)
For the first time, a team of researchers at the Max-Planck Institute (MPI) for Polymer Research in Mainz, Germany, has succeeded in making an integrated circuit (IC) from just a monolayer of a semiconducting polymer via a bottom-up, self-assembly approach.
In the self-assembly process, the semiconducting polymer arranges itself into an ordered monolayer in a transistor. The transistors are binary switches used...
Breakthrough provides a new concept of the design of molecular motors, sensors and electricity generators at nanoscale
Researchers from the Institute of Organic Chemistry and Biochemistry of the CAS (IOCB Prague), Institute of Physics of the CAS (IP CAS) and Palacký University...
For photographers and scientists, lenses are lifesavers. They reflect and refract light, making possible the imaging systems that drive discovery through the microscope and preserve history through cameras.
But today's glass-based lenses are bulky and resist miniaturization. Next-generation technologies, such as ultrathin cameras or tiny microscopes, require...
Scientists from the University of Zurich have succeeded for the first time in tracking individual stem cells and their neuronal progeny over months within the intact adult brain. This study sheds light on how new neurons are produced throughout life.
The generation of new nerve cells was once thought to taper off at the end of embryonic development. However, recent research has shown that the adult brain...
Theoretical physicists propose to use negative interference to control heat flow in quantum devices. Study published in Physical Review Letters
Quantum computer parts are sensitive and need to be cooled to very low temperatures. Their tiny size makes them particularly susceptible to a temperature...
15.02.2018 | Event News
13.02.2018 | Event News
12.02.2018 | Event News
21.02.2018 | Life Sciences
21.02.2018 | Life Sciences
21.02.2018 | Materials Sciences