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Characterization of Leachate and Assessment of the Leachate Pollution Index – A Study of the Controlled Landfill in Fez
 
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1
National School of Applied Sciences of Al-Hoceima, Department of Energy and Environmental Civil Engineering, Engineering Sciences and Applications Laboratory, Abdelmalek Essaâdi University, Tetouan, Morocco
 
2
Laboratory of Organic Synthesis, Extraction, and Valorization, FSAC, Hassan II University, Casablanca, Morocco
 
These authors had equal contribution to this work
 
 
Corresponding author
Yahya El Hammoudani   

National School of Applied Sciences of Al-Hoceima, Department of Energy and Environmental Civil Engineering, Engineering Sciences and Applications Laboratory, Abdelmalek Essaâdi University, Tetouan, Morocco
 
 
Ecol. Eng. Environ. Technol. 2024; 4:57-69
 
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ABSTRACT
The rapid increase in municipal solid waste in developing areas, as demonstrated by the Fez landfill, has led to the production of leachate with alarmingly high levels of pollutants, highlighting the urgent need for comprehensive analysis and advanced treatment methods. This study uncovers exceptionally high concentrations of organic and inorganic substances, and heavy metals in the leachate, with Chemical Oxygen Demand (COD) reaching 57,100 mg/L, Biochemical Oxygen Demand (BOD₅) at 39,400 mg/L, and a significant presence of iron (Fe) at 1,370 mg/L, underscoring the extreme contamination levels. Importantly, this research introduces a notable contribution to the field by calculating a Leachate Pollution Index (LPI) of 88.8, a figure considerably exceeding the limits considered safe for environmental discharge. The results of the current study complement already existing information about the critical environmental threat posed by the leachate, emphasizing the necessity for extensive treatment prior to release into the environment. The study's insights are crucial for developing effective strategies to reduce the risks to aquatic ecosystems and public health, and for guiding policy and practice in waste management in developing regions.
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