Research Article
Novel Electrochemical Treatment of Spent Caustic from the Hydrocarbon Industry Using Ti/BDD
Table 3
Electrochemical treatment of spent caustics (mixture) using Ti/BDD.
| | Sample | COD
(mg L−1) | COD removal (%) | Total removal efficiency, WT-ET (%) | TOC
(mg L−1) | TOC removal (%) | Total removal efficiency, WT-ET (%) |
| | Without treatment (WT) | 98,750 | 0 | — | 20,137.5 | 0 | 0 | | Chemical treatment (CT)* | 24,533 | 75.15 | — | 15,700 | 22.03 | — | | Electrochemical treatment (ET) | 2,333 | 90.40 | 96.63 | 2,322 | 85.21 | 88.46 |
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Acidification to pH 1 using H2SO4.
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