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Healthcare waste management is an essential field for both researchers and practitioners. Although there have been few studies using statistical methods for its evaluation, it has been the subject of several studies in different contexts. Furthermore, the known precarious practices for waste management in developing countries raise questions about its potential barriers. This study aims to investigate the barriers in healthcare waste management and their relevance. For this purpose, this paper analyses waste management practices in two Brazilian hospitals by using case study and the Analytic Hierarchy Process method. The barriers were organized into three categories - human factors, management, and infrastructure, and the main findings suggest that cost and employee awareness were the most significant barriers. These results highlight the main barriers to more sustainable waste management, and provide an empirical basis for multi-criteria evaluation of the literature.

Considering the increased interest of stakeholders in climate change and a low-carbon economy, this article has investigated and identified several contributions of the ISO 50001 in support of the adoption of green supply chain management (GSCM). In this context, energy efficiency and reduced CO 2 emissions are critical. Therefore, the proposal for and the requirements of ISO 50001 can generate useful insights on how to structure green and low-carbon supply chains, hence helping to address the challenges posed by climate change.

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This article reports results from a research project that analyzed the types of environmental management practices adopted by leading companies in the Brazilian market.The study sought to systematically categorize the motivations that explain companies' adoption of certain management practices. It also sought to understand how environmental management practices correlate with the stances (reactive or proactive) that an organization may take with regard to the environment. Overview of Study FindingsAs part of this research, we formulated a theoretical foundation and conducted a multiple case study. The results indicate that companies' adoption of various types of environmental management practices is related to distinct sets of motivational elements and organizational standpoints regarding the environment. A reactive environmental stance tends to coincide with adoption of a limited set of en-vironmental management practices, motivated by pressures exerted from outside the organization. By contrast, a proactive position (often motivated by a desire to explore e n v i r o n m e n t a l competitive advantage) tends to coincide with voluntary adoption of more advanced environmental management practices that can drive changes in products and production processes.The research discussed here empirically explores the framework of environmental management practices, a topic that previously has been covered only theoretically. This study also sug-