Applicability of electrocoagulation process for removal of contaminants from debrominated wastewater
Abstract
Debrominated wastewater (DWW) leftover, after the separation of bromine, from the effluent of various industries like fertilizer, pesticide, pharmaceutical, organic chemicals, etc. contains a large amount of COD, TDS, turbidity and color and cannot be discharged directly to water bodies. The investigation for DWW treatment by electrocoagulation (EC) was performed in a two-liter batch-type reactor using SS electrodes (Fe). With the four-plate configuration, a maximum COD, TDS, color, and turbidity removal of 45.5%, 26%, 86.5%, and 100% were obtained respectively, at their optimum pH 9, current intensity 2 amp, and electrode gap 1.5 cm. The maximum energy consumption of 4.2 Wh/L was observed at pH 5 while the maximum electrode loss (EL) was 1.995 g/L at pH 9. The best settling rate was found at pH 3, and the maximum weight of foam and residue of 7.31 kg/m3 was found at pH 9. Electrolysis time was also observed for all parameters.
- Publication:
-
Chemical Engineering and Processing: Process Intensification
- Pub Date:
- June 2023
- DOI:
- 10.1016/j.cep.2023.109360
- Bibcode:
- 2023CEPPI.18809360P
- Keywords:
-
- Debrominated wastewater;
- Electrocoagulation;
- Cod;
- Color;
- Turbidity