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We present a method for the neutralisation of heavy metals – Pb, Zn, Cd and Cr in contaminated water and soils by binding them into water-insoluble complexes, inabsorbable by plants, which was found to be effective under laboratory and green-house conditions. By introducing multiblock copolyethers (MBPE) and low molecular weight organic chelates (LOC) in water, containing heavy metal ions, they interact stoichiometrically and precipitate, affording water of irrigation quality. Treatment with MBPE and LOC (by sin...

The elimination of finely emulsified oil from waste waters is an important problem, and so far, no satisfactory solution thereto is available worldwide. Here we report some of the results from our studies on the purification of water from different types of oil, to allow waste water re-use in the technological cycle, or use for agricultural irrigation. The isolation of oil is performed by treatment of waste water with polymers of specific adsorption behaviour and solubilizing properties in aqueous medium. Multiblo...