Electrocoagulation Combined with Synthetic Zeolite—Does the Size of Zeolite Particles Matter?
Although electrocoagulation combined with zeolite (ECZ) shows higher efficiency in wastewater treatment, the actual contribution of zeolite particle size has not been fully explored. In this work, the influence of particle size of synthetic zeolite SZ (<90, 90–160, and 160–600 μm) on ECZ treatmen...
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| Format: | Article |
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MDPI AG
2023-08-01
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| Series: | Minerals |
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| Online Access: | https://www.mdpi.com/2075-163X/13/9/1141 |
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| author | Nediljka Vukojević Medvidović Ladislav Vrsalović Sandra Svilović Klara Magaš Dražan Jozić Anđela Čović |
| author_facet | Nediljka Vukojević Medvidović Ladislav Vrsalović Sandra Svilović Klara Magaš Dražan Jozić Anđela Čović |
| author_sort | Nediljka Vukojević Medvidović |
| collection | DOAJ |
| description | Although electrocoagulation combined with zeolite (ECZ) shows higher efficiency in wastewater treatment, the actual contribution of zeolite particle size has not been fully explored. In this work, the influence of particle size of synthetic zeolite SZ (<90, 90–160, and 160–600 μm) on ECZ treatment of compost leachate with very high organic load is investigated together with different electrode materials (Fe, Al, and Zn), current densities (0.003, 0.009 and 0.018 A/cm<sup>2</sup>), and contact times (10, 20 and 30 min). The results positively highlight that the largest particle size should be used in ECZ, as it leads to a lower increase in pH and temperature, a higher decrease of chemical oxygen demand (COD) and turbidity, and a lower electrode consumption, while causing more damage to the electrode surface. The estimated energy costs ranged from 3.960 kW/m<sup>3</sup>–1313.657 kW/m<sup>3</sup>. The Taguchi L9 orthogonal configuration showed the highest COD and turbidity decrease under the conditions of 160–600 µm zeolite particles. The powder X-ray diffractometer (PXRD) analysis shows that interplanar spacing decreases when smaller and medium SZ particle sizes are used, while this effect was not observed with larger zeolite particle size. SEM-EDS shows that oxygen, silicon, and aluminium are the predominant elements in electrogenerated sludge coupled with zeolite. |
| first_indexed | 2024-03-10T22:25:54Z |
| format | Article |
| id | doaj.art-3f52d7ad26bc46e18bb42d210b6517ba |
| institution | Directory Open Access Journal |
| issn | 2075-163X |
| language | English |
| last_indexed | 2024-03-10T22:25:54Z |
| publishDate | 2023-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Minerals |
| spelling | doaj.art-3f52d7ad26bc46e18bb42d210b6517ba2023-11-19T12:04:54ZengMDPI AGMinerals2075-163X2023-08-01139114110.3390/min13091141Electrocoagulation Combined with Synthetic Zeolite—Does the Size of Zeolite Particles Matter?Nediljka Vukojević Medvidović0Ladislav Vrsalović1Sandra Svilović2Klara Magaš3Dražan Jozić4Anđela Čović5Faculty of Chemistry and Technology in Split, University of Split, Ruđer Bošković 35, 21000 Split, CroatiaFaculty of Chemistry and Technology in Split, University of Split, Ruđer Bošković 35, 21000 Split, CroatiaFaculty of Chemistry and Technology in Split, University of Split, Ruđer Bošković 35, 21000 Split, CroatiaFaculty of Chemistry and Technology in Split, University of Split, Ruđer Bošković 35, 21000 Split, CroatiaFaculty of Chemistry and Technology in Split, University of Split, Ruđer Bošković 35, 21000 Split, CroatiaFaculty of Chemistry and Technology in Split, University of Split, Ruđer Bošković 35, 21000 Split, CroatiaAlthough electrocoagulation combined with zeolite (ECZ) shows higher efficiency in wastewater treatment, the actual contribution of zeolite particle size has not been fully explored. In this work, the influence of particle size of synthetic zeolite SZ (<90, 90–160, and 160–600 μm) on ECZ treatment of compost leachate with very high organic load is investigated together with different electrode materials (Fe, Al, and Zn), current densities (0.003, 0.009 and 0.018 A/cm<sup>2</sup>), and contact times (10, 20 and 30 min). The results positively highlight that the largest particle size should be used in ECZ, as it leads to a lower increase in pH and temperature, a higher decrease of chemical oxygen demand (COD) and turbidity, and a lower electrode consumption, while causing more damage to the electrode surface. The estimated energy costs ranged from 3.960 kW/m<sup>3</sup>–1313.657 kW/m<sup>3</sup>. The Taguchi L9 orthogonal configuration showed the highest COD and turbidity decrease under the conditions of 160–600 µm zeolite particles. The powder X-ray diffractometer (PXRD) analysis shows that interplanar spacing decreases when smaller and medium SZ particle sizes are used, while this effect was not observed with larger zeolite particle size. SEM-EDS shows that oxygen, silicon, and aluminium are the predominant elements in electrogenerated sludge coupled with zeolite.https://www.mdpi.com/2075-163X/13/9/1141zeolite particle sizesynthetic zeoliteelectrocoagulation combine with zeolitetreatment efficiencyelectrode surface analysiszeolite and electrogenerate sludge analysis |
| spellingShingle | Nediljka Vukojević Medvidović Ladislav Vrsalović Sandra Svilović Klara Magaš Dražan Jozić Anđela Čović Electrocoagulation Combined with Synthetic Zeolite—Does the Size of Zeolite Particles Matter? Minerals zeolite particle size synthetic zeolite electrocoagulation combine with zeolite treatment efficiency electrode surface analysis zeolite and electrogenerate sludge analysis |
| title | Electrocoagulation Combined with Synthetic Zeolite—Does the Size of Zeolite Particles Matter? |
| title_full | Electrocoagulation Combined with Synthetic Zeolite—Does the Size of Zeolite Particles Matter? |
| title_fullStr | Electrocoagulation Combined with Synthetic Zeolite—Does the Size of Zeolite Particles Matter? |
| title_full_unstemmed | Electrocoagulation Combined with Synthetic Zeolite—Does the Size of Zeolite Particles Matter? |
| title_short | Electrocoagulation Combined with Synthetic Zeolite—Does the Size of Zeolite Particles Matter? |
| title_sort | electrocoagulation combined with synthetic zeolite does the size of zeolite particles matter |
| topic | zeolite particle size synthetic zeolite electrocoagulation combine with zeolite treatment efficiency electrode surface analysis zeolite and electrogenerate sludge analysis |
| url | https://www.mdpi.com/2075-163X/13/9/1141 |
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