Kumar, Sushil; Drogui, Patrick 
ORCID: https://orcid.org/0000-0002-3802-2729 et Tyagi, Rajeshwar Dayal
(2024).
Application of central composite design for commercial laundry wastewater treatment by packed bed electrocoagulation using sacrificial iron electrodes.
Chemosphere
, vol. 368
.
p. 143729.
DOI: 10.1016/j.chemosphere.2024.143729.
Résumé
This research paper deals with a novel method utilizing packed bed electrocoagulation (PBEC) comprising of sacrificial iron electrodes and coupled with extracellular polymeric substances (EPS) used as flocculent agents for the treatment of commercial laundry wastewater (LWW).
The study employs stainless steel cathodes, graphite anodes, and scrap iron pieces as sacrificial electrodes, ensuring efficient treatment in dynamic batch mode operation with enhanced contact time facilitated by serpentine flow. The initial characteristics of LWW were COD 579 ± 30 mg/L, TSS of 60 ± 10 mg/L, TS of 622 ± 20 mg/L, turbidity of 110 ± 5 NTU, pH of 9 ± 0.5, NPEOs of 570 ± 150 μg/L and conductivity of 494 ± 20 mS/cm. The results demonstrate effective removal of turbidity (98 ± 2%), TS (95 ± 3%), COD (89 ± 5%), and NPEOs (53 ± 2%) under optimized current intensity: 2.99 A, treatment time: 58.8 min and enhanced EPS dose from 5.8 mg/L to 8.0 mg/L. The economic feasibility analysis reveals energy consumption as the primary expenditure, with a treatment cost of 1.20$CAN/m³. This research introduces sustainable treatment for commercial LWW, meeting Quebec's reuse standards, implying reuse potential and responsible wastewater management.
| Type de document: | Article |
|---|---|
| Mots-clés libres: | commercial laundry wastewater; wastewater treatment; packed bed electrocoagulation; response surface methodology; environmentally friendly |
| Centre: | Centre Eau Terre Environnement |
| Date de dépôt: | 06 janv. 2025 16:47 |
| Dernière modification: | 06 janv. 2025 16:47 |
| URI: | https://espace.inrs.ca/id/eprint/16224 |
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