RT Journal Article
T1 Evaluation of the olive mill wastewater treatment based on advanced oxidation processes (AOPs), flocculation, and filtration
A1 Agabo-García, Cristina
A1 Repetto, Guillermo
A1 Albqmi, Mha
A1 Hodaifa, Gassan
K1 AOPs
K1 Photo-Fenton
K1 Flocculation-sedimentation
K1 FiltrationToxicity
AB Different eco-friendly processes are under study to treat olive mill wastewater in the line with European 2024 zero-waste plan. This study is focused on the application of advanced oxidation processes, flocculation, and filtration to determine the best operational condition to obtain high-quality regenerated water in a simple and fast process. In this sense, after photo-Fenton high organic matter removal percentages were obtained: turbidity = 78.3 ± 6.4 %, chemical oxygen demand = 82.9 ± 0.1 %, total organic carbon = 68.9 ± 8.2 %, total phenolic compound = 20.8 ± 9.1 %, and total nitrogen = 64.1 ± 2.1 %. However, the total iron was increased to 792 ± 71 mg/L generating toxicity in the wastewater (100 % mortality in D. magna toxicity test). The subsequent flocculation and filtration steps, refine the water quality. In this sense, different flocculants have been studied to optimize regenerated treated water and the operations time, determining the sedimentation rate in a typical Kynch curve. In quality terms, adjusting the oxidized water to pH = 6 showed the best option to determine lowest values of COD = 131 mg O2/L, TPCs = 0.110 mg/L, and total iron = 0.380 mg/L but with high values for sodium = 1320 mg/L and chloride ions = 473 mg/L. However, with a minimum amount of Nalco 9913 (10 mg/L) and Nalco GR-204 (50 mg/L) highest sedimentation rate was achieved. After three filtration steps, regenerated water for irrigation purposes with the following quality parameters pH = 7.0, electric conductivity = 6.04 mS/cm, turbidity = 0.66 FTU, COD = 451 mg O2/L, TOC = 142 mg/L, TPCs = 0.13 mg/L; sodium ions = 1.50 mg/L, chloride ions = 221 mg/L, total iron = 0.247 mg/L, and no toxicity was obtained.
PB Elsevier
YR 2023
FD 2023
LK https://hdl.handle.net/10433/19534
UL https://hdl.handle.net/10433/19534
LA en
NO Journal of Environmental Chemical Engineering Volume 11, Issue 3, June 2023, 109789
NO The Junta of Andalusia and Ministry of Economy and Competitiveness (Spain) are acknowledged for financial support through Project Ref.: AGR-7092 “Application of advanced oxidation technologies for treating of washing wastewaters of olive oil and olives”. Authors also thank the University of Pablo de Olavide for its “Financing of the Bridge Projects” charged to the Strengthening Plan for R+D+i funded by the Ministry of Economy and Knowledge of the Junta of Andalucía, Ref.: CTM2016-78950-C2-1-R. Funding for open access publishing: Universidad Pablo de Olavide/CBUA.
NO Universidad Pablo de Olavide. Departamento de Biología Molecular e Ingeniería Bioquímica
DS RIO
RD May 22, 2026