Reclamation of formic acid wastewater by electro-oxidation coupled with UV irradiation (UV/EO)
The research aims to reclaim formic acid wastewater using UV/EO process, compared with the electro-oxidation (EO). The UV/EO process was more effective in treatment of formic acid wastewater as the COD reduction was higher, compared with the EO alone. In addition, the UV/EO process could decrease TD...
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Elsevier
2025-12-01
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| Series: | Case Studies in Chemical and Environmental Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666016425001549 |
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| author | Punnika Duangkaew Songkeart Phattarapattamawong |
| author_facet | Punnika Duangkaew Songkeart Phattarapattamawong |
| author_sort | Punnika Duangkaew |
| collection | DOAJ |
| description | The research aims to reclaim formic acid wastewater using UV/EO process, compared with the electro-oxidation (EO). The UV/EO process was more effective in treatment of formic acid wastewater as the COD reduction was higher, compared with the EO alone. In addition, the UV/EO process could decrease TDS via conversion of chloride ions to chlorine. The UV/EO performance highly depended on current density (CD) and contact time, while the role of temperature was minor. The UV/EO performance was greatly enhanced with higher CDs in non-filtrated waters because of less interferences, compared with filtrated waters. Electrodes of BDD and titanium plates were robustness for the UV/EO process. The estimated treatment costs were approximately 0.5, 1.3, and 2.4 US dollar/m3 for CD at 5, 10 and 15 mA/cm2, respectively. The UV/EO process has the potential to reclaim formic acid wastewater for non-potable application. The treated water is suitable for reuse in plantation, irrigation, and cleaning, as the total coliform and fecal coliform counts were inactivated to non-detectable levels. However, pH and TDS should be monitored. This is the first study that conducts the UV/EO experiment with industrial formic acid wastewater. The finding indicates that UV/EO is an effective process for reclamation of formic acid wastewater. |
| format | Article |
| id | doaj-art-e29790e8c6cc454d942e3758a51c7f33 |
| institution | OA Journals |
| issn | 2666-0164 |
| language | English |
| publishDate | 2025-12-01 |
| publisher | Elsevier |
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| series | Case Studies in Chemical and Environmental Engineering |
| spelling | doaj-art-e29790e8c6cc454d942e3758a51c7f332025-08-20T02:34:43ZengElsevierCase Studies in Chemical and Environmental Engineering2666-01642025-12-011210124710.1016/j.cscee.2025.101247Reclamation of formic acid wastewater by electro-oxidation coupled with UV irradiation (UV/EO)Punnika Duangkaew0Songkeart Phattarapattamawong1Department of Environmental Engineering, Faculty of Engineering, King Mongkut's University of Technology Thonburi (KMUTT), 126 Pracha-Utit Rd., Bangmod, Toungkru, Bangkok, ThailandCorresponding author.; Department of Environmental Engineering, Faculty of Engineering, King Mongkut's University of Technology Thonburi (KMUTT), 126 Pracha-Utit Rd., Bangmod, Toungkru, Bangkok, ThailandThe research aims to reclaim formic acid wastewater using UV/EO process, compared with the electro-oxidation (EO). The UV/EO process was more effective in treatment of formic acid wastewater as the COD reduction was higher, compared with the EO alone. In addition, the UV/EO process could decrease TDS via conversion of chloride ions to chlorine. The UV/EO performance highly depended on current density (CD) and contact time, while the role of temperature was minor. The UV/EO performance was greatly enhanced with higher CDs in non-filtrated waters because of less interferences, compared with filtrated waters. Electrodes of BDD and titanium plates were robustness for the UV/EO process. The estimated treatment costs were approximately 0.5, 1.3, and 2.4 US dollar/m3 for CD at 5, 10 and 15 mA/cm2, respectively. The UV/EO process has the potential to reclaim formic acid wastewater for non-potable application. The treated water is suitable for reuse in plantation, irrigation, and cleaning, as the total coliform and fecal coliform counts were inactivated to non-detectable levels. However, pH and TDS should be monitored. This is the first study that conducts the UV/EO experiment with industrial formic acid wastewater. The finding indicates that UV/EO is an effective process for reclamation of formic acid wastewater.http://www.sciencedirect.com/science/article/pii/S2666016425001549Advanced oxidation processElectro-oxidationFormic acidReclamationUV/EO |
| spellingShingle | Punnika Duangkaew Songkeart Phattarapattamawong Reclamation of formic acid wastewater by electro-oxidation coupled with UV irradiation (UV/EO) Case Studies in Chemical and Environmental Engineering Advanced oxidation process Electro-oxidation Formic acid Reclamation UV/EO |
| title | Reclamation of formic acid wastewater by electro-oxidation coupled with UV irradiation (UV/EO) |
| title_full | Reclamation of formic acid wastewater by electro-oxidation coupled with UV irradiation (UV/EO) |
| title_fullStr | Reclamation of formic acid wastewater by electro-oxidation coupled with UV irradiation (UV/EO) |
| title_full_unstemmed | Reclamation of formic acid wastewater by electro-oxidation coupled with UV irradiation (UV/EO) |
| title_short | Reclamation of formic acid wastewater by electro-oxidation coupled with UV irradiation (UV/EO) |
| title_sort | reclamation of formic acid wastewater by electro oxidation coupled with uv irradiation uv eo |
| topic | Advanced oxidation process Electro-oxidation Formic acid Reclamation UV/EO |
| url | http://www.sciencedirect.com/science/article/pii/S2666016425001549 |
| work_keys_str_mv | AT punnikaduangkaew reclamationofformicacidwastewaterbyelectrooxidationcoupledwithuvirradiationuveo AT songkeartphattarapattamawong reclamationofformicacidwastewaterbyelectrooxidationcoupledwithuvirradiationuveo |