摘要:
Shaped lyocell cellulose articles are provided for binding heavy metal ions and radioactive isotopes thereof. The shaped articles include one or more hexacyanoferrates that are incorporated in a cellulosic matrix and uniformly distributed therein. The shaped articles can be fibers, fibrids, fibrous nonwoven webs, granules, beads, self-supporting films, tubular films, filaments, sponges, foams or bristles. They are useful for water treatment and water decontamination, for metal beneficiation, for treatment of wound with wound dressings, for air and gas filtration and in protective apparel.
摘要:
A preparation method of filter element for swift and highly efficient adsorption of Cs includes the following steps: to a substrate material, adding a coupling agent with 1-3 wt % and ammonium phosphomolybdate with 1-10 wt %, based on the weight of the substrate material; heating to 160˜220° C.; stirring and mixing evenly so that the substrate material is combined with ammonium phosphomolybdate; spining through 5 μm micropore, the spun filament forming adsorbent filter element with a thickness of 5˜50 mm in the rotational cylinder framework material; evenly coating ammonium phosphomolybdate on the outer surface of the adsorbent filter element; and stabilizing and implementing an aging process by heating to 80˜120° C. for 3-12 h. The filter element prepared by this method provides an excellent water permeability, oxidization resistance, long-term immersion in hot water of below 100° C., radiation decomposition resistance, stable adsorption, swift detection, high efficiency and precision.
摘要:
A preparation method of filter element for swift and highly efficient adsorption of Cs includes the following steps: to a substrate material, adding a coupling agent with 1-3 wt % and ammonium phosphomolybdate with 1-10 wt %, based on the weight of the substrate material; heating to 160˜220° C.; stirring and mixing evenly so that the substrate material is combined with ammonium phosphomolybdate; spining through 5 μm micropore, the spun filament forming adsorbent filter element with a thickness of 5-50 mm in the rotational cylinder framework material; evenly coating ammonium phosphomolybdate on the outer surface of the adsorbent filter element; and stabilizing and implementing an aging process by heating to 80-120° C. for 3-12 h. The filter element prepared by this method provides an excellent water permeability, oxidization resistance, long-term immersion in hot water of below 100° C., radiation decomposition resistance, stable adsorption, swift detection, high efficiency and precision.
摘要:
The present invention relates to a composite of a porous substrate and one-dimensional nanomaterial, which is manufactured by a hydrothermal method. The method for manufacturing the composite of the present invention is simple and low-cost, and the one-dimensional nanomaterial is homogeneously distributed on the porous substrate with tight binding at the interface. The present invention also relates to a surface-modified composite and a method for preparing the same. The composite of the present invention which is hydrophobically modified at the surface can adsorb organic solvents such as toluene, dichlorobenzene, petroleum ether and the like, and greases such as gasoline, lubricating oil, motor oil, crude oil and the like, with a weight adsorption ratio of >10.
摘要:
A multilayer composite for reversible sorption of mercury, with a carrier core made of a metal or an alloy based on transition metals, has isolating layers of a transition metal nitride and externally located sorptive layers, made of a mixture of sulfides and nitrides of transition metals, the layers being deposited on both sides of the core. A method for sorption of mercury from a gaseous phase during an exposition of the multilayer composite to the influence of multicomponent gaseous mixtures that contain mercury vapors or compounds for a time period of 0.5 to 24 hours, while the temperature of the multilayer composite is maintained in the range from 20 to 150° C.
摘要:
Provided is a technique for solidifying radioactive waste, which enables stable final disposal of a large amount of radioactive waste with a simple process.A method for producing a solidified body of radioactive waste includes: a step (S11) of retrieving radioactive waste generated at a nuclear power plant or a nuclear related facility, a step (S12) of pressurizing radioactive nuclides contained in the radioactive waste along with an inorganic adsorbent and thereby forming a molded body; and a step (S13) of firing the molded body and thereby forming a solidified body.
摘要:
A multilayer composite for reversible sorption of mercury, with a carrier core made of a metal or an alloy based on transition metals, has isolating layers of a transition metal nitride and externally located sorptive layers, made of a mixture of sulfides and nitrides of transition metals, the layers being deposited on both sides of the core. A method for sorption of mercury from a gaseous phase during an exposition of the multilayer composite to the influence of multicomponent gaseous mixtures that contain mercury vapours or compounds for a time period of 0.5 to 24 hours, while the temperature of the multilayer composite is maintained in the range from 20 to 150° C.
摘要:
A sorption agent comprising activated carbon and an impregnation of the activated carbon for the sorption of air pollutants, wherein the impregnation contains a zinc compound and a molybdenum compound, as well as a gas-filtering element, such as a respirator canister, containing said sorption agent.
摘要:
A method of removing barium from a liquid includes adding a two-dimensional metal carbide water contaminant adsorbent to water to adsorb contaminants, such as barium (II), from the liquid. The two-dimensional metal carbide water contaminant adsorbent is in the form of at least one MXene, having the formula Mn+1Xn, where n=1, 2 or 3, M is an early transition metal, such as scandium (Sc), titanium (Ti), vanadium (V), chromium (Cr), yttrium (Y), zirconium (Zr), niobium (Nb), molybdenum (Mo) or the like, and X is either carbon or nitrogen. The MXene may be Ti3C2. The liquid may be, for example, at least one water by-product from at least one oilfield reservoir, such as produced water, co-produced water or a combination thereof.
摘要:
The present invention relates to a composite of a porous substrate and one-dimensional nanomaterial, which is manufactured by a hydrothermal method. The method for manufacturing the composite of the present invention is simple and low-cost, and the one-dimensional nanomaterial is homogeneously distributed on the porous substrate with tight binding at the interface. The present invention also relates to a surface-modified composite and a method for preparing the same. The composite of the present invention which is hydrophobically modified at the surface can adsorb organic solvents such as toluene, dichlorobenzene, petroleum ether and the like, and greases such as gasoline, lubricating oil, motor oil, crude oil and the like, with a weight adsorption ratio of >10.