A buried stainless steel nuclear waste storage tank contains significant amounts of dissolved radioactive Cr ³⁺ , Al ³⁺ , Fe ³⁺ , and Ni ²⁺ + at pH2. It is proposed to neutralize this acid tank solution to pH7 in the tank with concentrated NaOH. The neutralized solution will then be pumped out of the tank for transport to other facilities for further processing. Explain the advantages and disadvantages of the neutralization step using appropriate Pourbaix diagrams. On the basis of your evaluation, would you recommend neutralization ?

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In all cases from the Pourbaix diagrams for Cr Al Fe and Ni the component metal c... View the full answer