首页|Treatment of Cheese Wastewater by Coagulation-Flocculation Coupled with Heterogeneous Photocatalysis Using a New Synthesized TiO_2 Anatase: Treatment Efficiency and Phytotoxicity evaluation

Treatment of Cheese Wastewater by Coagulation-Flocculation Coupled with Heterogeneous Photocatalysis Using a New Synthesized TiO_2 Anatase: Treatment Efficiency and Phytotoxicity evaluation

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The main objective of this research was to evaluate the treatment efficiency of cheese waste-water containing organic pollutants by combining coagulation-flocculation with ferric chloride (FeCl_3) and heterogeneous photocatalysis in which a new synthesized TiO_2 was used under UV-A (600 W) irradiation. Coagulation-flocculation experiments showed that the removal of turbidity, chemical oxygen demand (COD), and biological oxygen demand (BOD_5) were 98.83, 49.23, and 40.58%, respectively, at a coagulant dose of 0.4 Fe~(3+) g L~(-1). Thereafter, the application of TiO_2-based photocatalysis process to the pretreated cheese wastewater improved the COD reduction from 3179.26 mg O_2 L~(-1) to 437.47 mg O_2 L~(-1) with a removal percentage of 86.24%, using the optimized conditions given by pH (4); TiO_2 (0.5gL~(-1)), and 16 h for irradiation time. Finally, cheese wastewater samples were examined for their phytotoxicity, before and after treatments, through seed germination/root elongation tests using tomato, cucumber, and alfalfa seeds. The experimental results showed a significant decrease in toxicity of the treated cheese wastewater using the combined process. These findings are encouraging and support the possible use of treated cheese wastewater as an additional freshwater source for irrigation.

Cheese wastewaterCoagulation-flocculationHeterogeneous photocatalysisPhytotoxicity testWastewater reuseIrrigation

Kaltoum Belkodia、Mohammed-amine Edaala、El mountassir El mouchtari、Hafid Achtak、Abdelaziz Alaoui Tahiri、Samir Briche、Salah Rafqah

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Laboratoire de Chimie Analytique Et Moleculaire, Faculte Polydisciplinaire de Safi, Universite Cadi Ayyad, 46 000 Safi, Morocco

Laboratoire de Chimie Analytique Et Moleculaire, Faculte Polydisciplinaire de Safi, Universite Cadi Ayyad, 46 000 Safi, Morocco||Laboratory of Molecular Chemistry, Materials and Catalysis (LC2MC), Faculty of Science and Technology of Beni-Mellal, University Sultan Moulay Slimane, B.P. 523, 23000 Beni-Mellal, Morocco

Laboratoire de Chimie Analytique Et Moleculaire, Faculte Polydisciplinaire de Safi, Universite Cadi Ayyad, 46 000 Safi, Morocco||Laboratory of Ecotoxicology, Bioresources and Coastal Geomorphology, Department of Biology, Polydisciplinary Faculty, Cadi Ayyad University, Sidi Bouzid, P.O. Box 4162, 46 000 Safi, Morocco

Departement Stockage de L'Energie Et Revetements Multifonctionnels, MAScIR Foundation, Rabat, Morocco

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2025

10.1007/s11270-025-08131-7

Water, air and soil pollution

Water, air and soil pollution

ISSN：0049-6979
年,卷(期)：2025.236(8)
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