This paper is related to the hydrogen storage (H-storage) system composed of an alkaline solution that contains metal-hydrogen complex ions. The BH 4 − -complex ions stabilized when it is dissolved in aqueous KOH or NaOH to form homogeneous solutions. However, it is necessary to apply an appropriate catalyst for a high rate generation of hydrogen under atmospheric pressure and temperature conditions. The authors intended to develop catalysts suitable for the hydrolysis of BH 4 --complex ion solutions and found that Mg 2 Ni exhibits excellent catalytic functions in the hydrolysis, in particular, after the fluorination treatment (F-treatment). In this work, the effects of F-treatment on the rates of hydrolysis were evaluated between the hydrided and unhydrided Mg 2 Ni. No hydrogenation in addition to F-treatment is required in view of hydrolysis kinetics and cost-effectiveness.
Heavy metals such as Pb, Cd, Hg, Cu, Cr and Zn in the water will drop then settle to form sediments, some organisms that feed on the basis of water will have a great chance of being exposed to this heavy metal.
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