Research Article
Novel Electrochemical Treatment of Spent Caustic from the Hydrocarbon Industry Using Ti/BDD
Figure 4
SEM analysis. (a) Ti/IrO2-Ta2O5. (b) Ti/SnO2-Sb. (c) Ti/BDD, applying 15 kV with its respective micrographies and X-ray dot-mapping analysis, identifying: (a1) Ir, (a2) Ta, (b1) Sn, (c1) B, and (c2) C. (d) Cyclic voltammetry analysis for (d1) Ti/IrO2-Ta2O5, (d2) Ti/SnO2-Sb, and (d3) Ti/BDD in 0.5 M H2SO4.