The dissolution of synthetic and industrial zinc ferrite was studied in HNO3, HClO4 and H2SO4 solutions, at temperatures ranging from 75°C to 95°C and in the presence of an excess of Fe2+, Fe3+ or Zn2+ ions. The rate constant describing this dissolution process was obtained by using ...
Their study also indicated a more rapid dissolution of PbO particles than copper slag particles in soils (Birkefeld et al., 2006). However, alteration on larger Mn-rich slag particles were not evidenced in one year's bury in an acidic soil, probably due to the shorter contact time with ...
Zinc was the only metal detected in the precipitate collected after the H2S precipitation of AMD (Table 4) and XRD indicated the presence of zinc sulfide (Fig. S1c), which was consistent with the S2p and Zn2p high-resolution XPS spectra. Sulfur was in sulfide form and the S2p3/2 peak ...
An increase in the phase angle along with the increase in the NP extract concentration can be related to the decrease in the capacitive behavior of the metal surface due to the dissolution process. The addition of NP extract up to 6 g/L increased the value of Rp. The maximum value of ...