Assessment of methane emissions from landfills in five major cities of Algeria: comparative analysis of calculation models and study on methane-to-electricity conversion

Landfills are commonly used for managing municipal solid waste and generating energy. However, accurate estimations of landfill gas, thorough analysis of its energy potential, and comprehensive economic assessments are essential for the successful implementation of a landfill project. The municipal solid waste (MSW) generation rate in Algerian cities is experiencing an exponential increase alongside the growth of urbanization and commercial activities. Various waste-to-energy technologies have been explored in the past, but anaerobic digestion stands out as the preferred option due to its eco-friendly nature and simple design. This article presents a study on the potential of generating electrical energy from methane produced in landfills in five major cities in Algeria. Using various models to assess methane quantities, the study highlights a rising trend in methane production over the years, with peaks expected between 2032 and 2047 depending on the regions. The findings suggest that methane can be harnessed as an economical energy source, providing a sustainable solution to meet the growing energy needs of these regions. Additionally, the article underscores the importance of effective landfill management to minimize environmental impacts and maximize the economic benefits of this renewable energy source. In conclusion, this study provides crucial insights to guide public policies and private initiatives aimed at promoting the capture and utilization of landfill methane as a solution to reduce greenhouse gas emissions and facilitate a transition to a greener economy in Algeria, also it will aid local authorities in incorporating considerations of the potential for energy recovery in the study regions, as well as in other areas of Algeria, into their long-term waste management plans.