Science Fair Introduction Paper

The initial range of reactant ratios was between 3.793 and 4.214 (mol/mol).The maximum recovered mass of uranium was predicted to be 8.626 grams of uranium at a reactant ratio of 3.82 mol/mol.

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I used calculus to differentiate this trendline and found the absolute maximum.

I repeated this procedure for molar ratios of adsorbed uranium to vanadium ions against reactant ratios.

Fossil fuel burning, which has made great strides in efficiency in cleanliness, simply is not a renewable or sustainable source of energy.

On the other hand, renewable energy sources such as solar, wind, and hydroelectric, lack efficiency to take on the burden of our energy demand, even if their future potential is great.

Nuclear fission power lies somewhere in the middle, with a large energy output and minimal emissions.

Nuclear power stands to be an intermediary between power resources, as we transition from fossil fuels to renewables.In short, the optimal ratio of acrylonitrile to vinylphosphonic acid will return the highest ratio of recovered uranium to adsorbent, taking into account the effects of ion competition and elution methods on adsorbent capacity.Materials and Methods To better understand this project as a whole, it is important to mention the details in the formation and structure of AI adsorbents.The oceans, however, contain an estimated 4.5 billion tons of dissolved uranium (1).Current methods including polymers, resins, and hydrogel adsorbents have been developed and tested to collect uranium from the seawater (2).It is estimated that there is about 4.5 billion tons of uranium dissolved in seawater (2).Furthermore, since uranium is in solubility equilibrium, the uranium extracted from the ocean is replaced by new uranium in the earth’s crust, according to Le Chatelier's principle.High-quality uranium ore is also geographically specific, which disadvantages some regions where such deposits are sparse.Recent research developments have indicated that the oceans could be our next source of uranium.There are numerous challenges and requirements that face such a technology.Some include: ● Very low concentration of uranium in seawater (3.3 ppb; 1.4 E-8 mol/L) (1) ● Uranyl (UO 2 ), the common form of uranium, is tightly bound to carbonate (CO 3 ) in a uranyl tricarbonate metal complex in seawater, where the carbonate groups surround a uranyl ion (3-5) ● Seawater contains many other undesirable ions in far greater concentrations (1) ● Must not harm aquatic life ● Must operate at the p H of seawater (~8) (1) ● Must be economical; cost of seawater extraction must be the same or less than conventional uranium mining During my investigation, I focused largely on developing an economical solution, which encompasses most of the other listed issues, as well as improving reusability of the extraction technology and reducing competition with other, undesirable ions.


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