The challenge of developing country governments in municipal solid waste management (MSWM) is complex, often ineffective, and does not meet the required technical sustainability, which involves environmental, social, and financial aspects. The purpose of this research is to analyze two distinct waste management systems, in São Leopoldo (Brazil) and in Zurich (Switzerland), to develop a tool called “waste stream mapping” and also to compare the cities systems. The results show positively that the two municipalities have selective waste collection, however in São Leopoldo it was found that less volume was reinserted in the production chain, which considerably increases the volume of waste sent to sanitary landfill, which is the main method of disposal in Brazil. On the other hand, the Zurich management model is more expensive, especially compared to incineration, but its billing and power trading system ends up involving more of the population and paying for the operations, as Zurich generates more income than expenses. This study shows that each stage of waste management has its peculiarity and everything should be planned. The tool adapted from Value Stream Mapping has shown that it is useful to have a broad vision about the municipal solid waste management to be implemented.
This paper brings the results of a systematic literature review, about Sustainability in Universities, solving the research gap in this area. Studies were searched in the Scopus database, with keywords and inclusion/exclusion criteria. The study resulted in 71 papers, which were fully analyzed and maps of clusters were created. Results show the evolution of academic research, dating from 2010 to 2022. Of the total number of articles selected, 28% were on Sustainability Indicators, which denotes the importance of this tool for the studied topic. Brazil has the highest percentage of publications (16.9%) in this analysis. The most relevant topic was on Sustainability/Higher Education/Indicators. These results show the research gap in the area of sustainability in universities, allowing other educational institutions to develop their environmental management and seek sustainability as a way of development of a society that is more aware and prepared for the challenges of the future.
Aterros sanitários detêm a maior parcela de disposição final de Resíduos Sólidos Urbanos (RSU) no Brasil. O estudo das propriedades geotécnicas dos RSU contribui para o monitoramento das áreas de disposição, garante sua segurança estrutural e o aumento de vida útil, considerando a heterogeneidade dos resíduos. Este artigo apresenta os resultados do estudo das propriedades geotécnicas de uma amostra de RSU recém- descartados (1) e RSU aterrados há 5 anos (2), coletadas em um Aterro Sanitário localizado no Sul do Brasil. Foram realizados ensaios de teor de umidade, massa específica e compressão confinada, utilizando como metodologia a teoria de adensamento de solos. Com os ensaios de compressão, foram obtidos os valores de índice de compressão primária para a amostra 1 (0,56 a 1,67) e para a amostra 2 (0,17 a 0,53) e o índice de compressão secundária para amostra 2 (0,006 a 0,004). Este estudo confirmou a aplicabilidade da metodologia de solos para o estudo da compressibilidade de RSU. Palavras-chave: Resíduos sólidos urbanos. Geotecnia. Adensamento. Ensaios laboratoriais.
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