Photo-alternating current-electrocoagulation technique: Studies on operating parameters for treatment of industrial wastewater
In this investigation, several electrochemical and advanced oxidation processes (AOPs), including photolysis (UV), direct/alternating current-electrocoagulation (DC/AC/EleC), and photo-direct/alternating current-electrocoagulation (UV/DC/AC/EleC) process were examined regarding their capacity in ord...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-06-01
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| Series: | Scientific African |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S246822762400139X |
| _version_ | 1797234343305805824 |
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| author | Perumal Asaithambi Wendesen Mekonin Desta Mamuye Busier Yesuf Mohammed Hussen Zerihun Asmelash Dejene Beyene Selvakumar Periyasamy Esayas Alemayehu |
| author_facet | Perumal Asaithambi Wendesen Mekonin Desta Mamuye Busier Yesuf Mohammed Hussen Zerihun Asmelash Dejene Beyene Selvakumar Periyasamy Esayas Alemayehu |
| author_sort | Perumal Asaithambi |
| collection | DOAJ |
| description | In this investigation, several electrochemical and advanced oxidation processes (AOPs), including photolysis (UV), direct/alternating current-electrocoagulation (DC/AC/EleC), and photo-direct/alternating current-electrocoagulation (UV/DC/AC/EleC) process were examined regarding their capacity in order to reduce the amount of chemical oxygen demand (COD) and color in distillery industrial wastewater (DIW), as well as the effect these factors have on the amount of electricity required to treat the wastewater. Experimental results showed that compared to single UV, DC/EleC, AC/EleC, and hybrid UV/DC/EleC processes, the hybrid UV/AC/EleC process provided excellent color-100 % and COD-100 % removal efficiencies with a lowered usage of energy of 8.54 kWhr m−3. The influence of critical operational variables such as treatment time (30–240 min), photo (8–40 W), pulse duty cycle (0.14–0.86), current (0.15–0.90 Amp), pH (1.50–11.50), chemical oxygen demand (3000–9000 mgL−1), inter electrode spacing (1–4 cm), electrode combination (Fe/Fe, Fe/Al,Al/Fe, Al/Al), and electrolyte concentration (1–5 g L−1) on the efficiency of% color and COD removal, as well as the energy utilization of DIW were examined applying a hybrid UV/AC/EleC method. The synergistic index between UV and the AC/EleC process was also examined and discussed in this work. The UV/AC/EleC technique is the most advantageous choice in comparison to the other approaches since it can be applied to properly and efficiently remove pollutants from wastewater and industrial effluent. |
| first_indexed | 2024-04-24T16:30:33Z |
| format | Article |
| id | doaj.art-763b371b6f554dfe97c034f30c2a99de |
| institution | Directory Open Access Journal |
| issn | 2468-2276 |
| language | English |
| last_indexed | 2024-04-24T16:30:33Z |
| publishDate | 2024-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Scientific African |
| spelling | doaj.art-763b371b6f554dfe97c034f30c2a99de2024-03-30T04:39:47ZengElsevierScientific African2468-22762024-06-0124e02193Photo-alternating current-electrocoagulation technique: Studies on operating parameters for treatment of industrial wastewaterPerumal Asaithambi0Wendesen Mekonin Desta1Mamuye Busier Yesuf2Mohammed Hussen3Zerihun Asmelash4Dejene Beyene5Selvakumar Periyasamy6Esayas Alemayehu7Faculty of Civil and Environmental Engineering, Jimma Institute of Technology, Jimma University, Jimma, Po Box - 378, Ethiopia; Corresponding author.Faculty of Civil and Environmental Engineering, Jimma Institute of Technology, Jimma University, Jimma, Po Box - 378, EthiopiaFaculty of Civil and Environmental Engineering, Jimma Institute of Technology, Jimma University, Jimma, Po Box - 378, EthiopiaFaculty of Civil and Environmental Engineering, Jimma Institute of Technology, Jimma University, Jimma, Po Box - 378, EthiopiaFaculty of Civil and Environmental Engineering, Jimma Institute of Technology, Jimma University, Jimma, Po Box - 378, EthiopiaFaculty of Civil and Environmental Engineering, Jimma Institute of Technology, Jimma University, Jimma, Po Box - 378, EthiopiaDepartment of Chemical Engineering, School of Mechanical, Chemical and Materials Engineering, Adama Science and Technology University, Adama 1888, EthiopiaFaculty of Civil and Environmental Engineering, Jimma Institute of Technology, Jimma University, Jimma, Po Box - 378, Ethiopia; Center of Excellence for Water Management, Addis Ababa University, Addis Ababa, Po Box-1176, EthiopiaIn this investigation, several electrochemical and advanced oxidation processes (AOPs), including photolysis (UV), direct/alternating current-electrocoagulation (DC/AC/EleC), and photo-direct/alternating current-electrocoagulation (UV/DC/AC/EleC) process were examined regarding their capacity in order to reduce the amount of chemical oxygen demand (COD) and color in distillery industrial wastewater (DIW), as well as the effect these factors have on the amount of electricity required to treat the wastewater. Experimental results showed that compared to single UV, DC/EleC, AC/EleC, and hybrid UV/DC/EleC processes, the hybrid UV/AC/EleC process provided excellent color-100 % and COD-100 % removal efficiencies with a lowered usage of energy of 8.54 kWhr m−3. The influence of critical operational variables such as treatment time (30–240 min), photo (8–40 W), pulse duty cycle (0.14–0.86), current (0.15–0.90 Amp), pH (1.50–11.50), chemical oxygen demand (3000–9000 mgL−1), inter electrode spacing (1–4 cm), electrode combination (Fe/Fe, Fe/Al,Al/Fe, Al/Al), and electrolyte concentration (1–5 g L−1) on the efficiency of% color and COD removal, as well as the energy utilization of DIW were examined applying a hybrid UV/AC/EleC method. The synergistic index between UV and the AC/EleC process was also examined and discussed in this work. The UV/AC/EleC technique is the most advantageous choice in comparison to the other approaches since it can be applied to properly and efficiently remove pollutants from wastewater and industrial effluent.http://www.sciencedirect.com/science/article/pii/S246822762400139XIndustrial wastewaterElectrocoagulationDirect/alternating–currentPhotoCOD and color removalUsage of energy |
| spellingShingle | Perumal Asaithambi Wendesen Mekonin Desta Mamuye Busier Yesuf Mohammed Hussen Zerihun Asmelash Dejene Beyene Selvakumar Periyasamy Esayas Alemayehu Photo-alternating current-electrocoagulation technique: Studies on operating parameters for treatment of industrial wastewater Scientific African Industrial wastewater Electrocoagulation Direct/alternating–current Photo COD and color removal Usage of energy |
| title | Photo-alternating current-electrocoagulation technique: Studies on operating parameters for treatment of industrial wastewater |
| title_full | Photo-alternating current-electrocoagulation technique: Studies on operating parameters for treatment of industrial wastewater |
| title_fullStr | Photo-alternating current-electrocoagulation technique: Studies on operating parameters for treatment of industrial wastewater |
| title_full_unstemmed | Photo-alternating current-electrocoagulation technique: Studies on operating parameters for treatment of industrial wastewater |
| title_short | Photo-alternating current-electrocoagulation technique: Studies on operating parameters for treatment of industrial wastewater |
| title_sort | photo alternating current electrocoagulation technique studies on operating parameters for treatment of industrial wastewater |
| topic | Industrial wastewater Electrocoagulation Direct/alternating–current Photo COD and color removal Usage of energy |
| url | http://www.sciencedirect.com/science/article/pii/S246822762400139X |
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