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- Title
Multi-response optimization of coagulation-flocculation process for stabilized landfill leachate treatment using a coagulant based on an industrial effluent.
- Authors
Anouzla, Abdelkader; Kastali, Malika; Azoulay, Karima; Bencheikh, Imane; Fattah, Ghizlane; Mabrouki, Jamal; Elhassani, Chirâa Elidrissi; Ouadil, Boubker; Moustaqim, Khadija El; Bakkouche, Chaymae; Moussadik, Ali; Mouhir, Latifa; Digua, Khalid; Souabi, Salah; Khaoulaf, Redouane; Hajjaji, Souad El; Loukili, Hayat; Saffaj, Nabil; Azrour, Mourade; Abrouki, Younes
- Abstract
The aim of this study is to assess the performance of an industrial effluent steel industrial wastewater (SIWW) highly loaded with ferric salts from Maghreb Steel Company as coagulant for stabilized landfill leachate treatment. Response surface methodology and central composite design were applied to optimize the coagulation-flocculation process and to model the relationships between independent variables (coagulant dose and effluent pH) and responses (chemical oxygen demand (COD) and turbidity removal, and sludge production). Quadratic polynomial models developed for these responses indicated that the optimum conditions were 8 mL/L of SIWW at pH 2.75. These results showed good agreement between experimental and model predictions. 55.43% and 87.55% of COD and turbidity removal, respectively and with 19 mL/L of sludge production from treatment of this leachate by coagulation-flocculation using a SIWW-based coagulant were demonstrated. Accordingly, it is concluded that SIWW can be used as an effective and alternative coagulant for the pre-treatment of stabilized landfill leachate by a coagulation-flocculation process.
- Subjects
INDUSTRIAL wastes; LEACHATE; COAGULANTS; LANDFILLS; LANDFILL management; UPFLOW anaerobic sludge blanket reactors; RESPONSE surfaces (Statistics)
- Publication
Desalination & Water Treatment, 2022, Vol 254, p71
- ISSN
1944-3994
- Publication type
Article
- DOI
10.5004/dwt.2022.28388