Land filling is one of the most common methods of disposing of solid waste all over the world, however, with constantly increasing waste volumes and land scarcity, waste diversion and recovery are more likely the best answer to these concerns. This research paper presents an estimation of the diversion impact on the required land area and on the lifespan of a technical landfill centre (TLC) in Constantine, Algeria. Our methodology consists in drawing up three scenarios of operation of TLC, over a period of 15 years, with each scenario, applying a different waste diversion rate, results show that: waste diversion reduces land consumption and increases the TLC's lifespan in all three scenarios but diverting for composting is the most efficient one.
Purpose of study: The interest of this study is to show that the composting of various organic materials makes it possible to contribute to reducing the quantities of Waste sent to landfills and, consequently, the removal of their environmental impact. The aim is to show that aerobic composting of organic Waste can be an alternative to sustainable waste management in Algeria by examining the potential for producing compost from different organic waste streams.
Methodology: The method is based on analyzing documentary data, field surveys and experiments. The latter examines the potential for producing compost from different organic waste streams in Algeria. Three types of Waste are composted and analyzed: green Waste, kitchen waste and a combination. The experiment was carried out from March until June 2021; it involved using organic Waste to produce three different composts in their composition. Research has focused on studying the complex interplay between physical, chemical and biological factors that occur during composting and compost quality parameters.
Result: The results showed that composting the organic fraction of Waste reduced its mass by 22% for green Waste, 70% for kitchen waste and 63% for the mixture of the two. The variation of the process monitoring parameters (temperature, humidity, pH) corresponds perfectly to those established in previous studies. Through analysis and the germination test, the result has made it possible to obtain good-quality compost that can be used in agriculture.
Conclusion: The maturity of the composts obtained was checked by the germination test, demonstrating that the highest germination rate was recorded at the level of the soil-compost mixtures, regardless of the type of compost used. However, compost made from kitchen scraps alone has the highest rate. Chemical analyses of the composts confirmed these results, which are acceptable to French standards, given the lack of Algerian standards. This study demonstrates that composting has significantly reduced the Waste mass and obtained good quality compost.
Purpose of the study: The goal is to emphasise the relevance of contextualisation in designing university professional training and adapting skills to the growth of social and labour market demands to maintain the University's long-term viability and resilience. It highlights the concepts and strategies used in building a professional master's degree in sustainable waste management in collaboration with the socio-economic and academic sectors (Rostock University, Germany).
Methodology: The method used is based on technical means: analysis of documents, investigation and observation in the field. Supplemented by the study of the work carried out by the professional in the situation, which lasted three years—complemented by a series of interviews with stakeholders in the waste management sector (academic and national and international socio-economic).
Main findings: Considering the context while developing the curriculum makes professional training a critical instrument for placing the University at the service of society.
The involvement of players in the socio-economic sector enhances the quality of higher education. Furthermore, it promotes the opening of the University to the socio-economic world and the integration of future executives into the industrial world.
Applications of this study: This study on the approach to adapting vocational courses to the local context in the waste management sector can be generalised to all areas where there is a need for the skills required.
The areas: we can mention operational town planning, the living environment and public space management, and heritage tourism development.
Novelty/originality of this study: The study's uniqueness stems from the strategy used in its conception and implementation, which included taking into account the local context, consulting and involving actors in the socio-economic sector, and establishing a collaboration platform, furthermore, within the university, the creation of an "Eco campus" pilot project as a field of practice, including students and professors as participants.
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