Oxidation Reduction
Cr2O72- + C2O42- ? Cr3+ + CO2 +12/2=+6 +6/2=+3 +3 +4 Divide the sum of the charges by the number of atoms to get the oxidation number for chromium and carbon in the reactants. Balancing Oxidation-Reduction Reactions: 2. Write ‘bare bones’ half reactions. Include only...
After a dressing process, most of the Fe (~70%) and a part of REE (<10%) could be recovered [2]. Meanwhile, tailings containing iron oxides, REE oxides ((REE)O) and Nb2O5 become a precious secondary resource (~190 million tons). To recover the valuable metals from the tailings,...
In this context, various semiconductor materials, such as TiO2 [12], SnS2 [13], ZnO [14], Bi2O3 [15], and CoO [16,17], have been applied to UV or visible light-induced photocatalytic reduction of toxic Cr(VI) to less harmful Cr(III). Unlike Cr(VI), aqueous Cr(III) can be ...
To generate OSSB-SC signal, baseband signal VB(t) and its Hilbert transform VH(t) are used to drive the two sub-MZIs which are biased at their transmission null points. Hilbert transform is defined as in Equation (1). H(ω) = −jsgn(ω) (ω = 0) 0 (ω = 0) (1) PhotoPnh...