Table 4 Cr(VI) removal efficiency and electrical parameters under different electrolytes
From: Remediation of chromium-slag leakage with electricity cogeneration via a urea-Cr(VI) cell
Systema | C0-Cr(VI) mM | OCP(V) | Cr(VI) removal efficiency | Total generation electricity (C) | Theoretical generation electricity (C) | Cathodic efficiency (%) |
|---|---|---|---|---|---|---|
Urea + PBS-Cr(VI) t3 | 2.68 | 1.19 | 96.5% | - | - | - |
Urea + KOH-Cr(VI) t1 | 1.34 | 1.56 | 96.7% | 8.42 | 3.88 | 46.1 |
Urea + KOH-Cr(VI) t2 | 2.68 | 1.59 | 98.6% | 11.3 | 7.76 | 68.6 |
Urea + KOH-Cr(VI) t3 | 5.35 | 1.59 | 98.6% | 20.5 | 15.3 | 74.6 |
