Publications by authors named "Sergio A D Martinez"
Removal of Cr(VI) from wastewaters in a tubular electrochemical reactor.
J Environ Sci Health A Tox Hazard Subst Environ Eng
July 2006
Article Synopsis
- The study investigated how to reduce hexavalent chromium (Cr(VI)) to trivalent chromium (Cr(III)) using a tubular reactor in both continuous and batch modes.
- It was found that the reduction process involves not just the oxidation of iron from sacrificial steel anodes, but also a secondary reaction where Fe(III) is reduced back to Fe(II), suggesting a catalytic effect.
- The research highlighted the importance of pH levels (1 to 2) on the solubility of the generated species, with significant reductions in chromium concentrations observed, dropping from 1000 mg/L to as low as 0.5 mg/L after treatment times between 25 to 320 minutes.