TiO2-Fly Ash Composites for Photocatalytic Degradation of Organic Loading from Real Municipal Wastewater
Fly ash-TiO2 composites were obtained by sol–gel, and their catalytic performance was evaluated on removal of organic loading and expressed as Chemical Oxygen Demand (COD) from real wastewater samples. SEM, X-ray fluorescence, XRD, IR, Raman analysis and determination of PZC characterized the catalysts. The photocatalytic tests were carried out in a laboratory reactor under UV-VIS irradiation and influence of fly ash (FA) content, and irradiation time was investigated. The catalysts with FA content of 10%, 20% and 30% showed COD removal efficiencies higher than 50% after 5 h of irradiation. The COD degradation followed a pseudo-first order kinetic model. Obtained results proved that FA-TiO2 composites could represent a suitable alternative for removal of organic loading from real wastewater.
Authors
- Ioana‐Alexandra Ionescu (ORCID: https://orcid.org/0000-0002-5366-3305)
- Cristina Mihaela Nicolescu (ORCID: https://orcid.org/0000-0002-6286-1303)
- Lucian Alexandru Constantin (ORCID: https://orcid.org/0000-0001-9958-1455)
- Mirela Alina Constantin (ORCID: https://orcid.org/0000-0003-4702-0351)
- Anca Irina Gheboianu (ORCID: https://orcid.org/0000-0001-5380-4553)
- Marius Bumbac (ORCID: https://orcid.org/0000-0002-7568-0931)
- Florenta Daniela Constantinov
Institutions
- Valahia University of Targoviste (RO)
- National Institute for Research and Development for Industrial Ecology (RO)
Publication Details
- Journal
- Recycling
- Published
- 2026-08-20
- DOI
- https://doi.org/10.3390/recycling11080154
- Primary Topic
- Water Quality Monitoring and Analysis
- Type
- article
- Field-Weighted Citation Impact
- 0.00