| Texto completo | |
| Autor(es): |
Borges, Roger
;
Brondi, Mariana
;
Elias, Andrew Milli
;
Farinas, Cristiane S.
;
Ribeiro, Caue
Número total de Autores: 5
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Journal of Environmental Management; v. 363, p. 12-pg., 2024-06-07. |
| Resumo | |
Despite being composed of recyclable materials, the main technological challenge of multilayer carton packs involves the efficient decompatibilization of the cellulosic, polymeric, and metallic phases. Here, a simple twostep mechanochemical process is described that uses only aqueous media and mechanical force to promote phase separation in order to fully recycle multi-layer carton packaging. The first step produces value-added micro- and nanocellulose, while in the second step, aluminum is extracted, forming precipitated aluminum and aluminum oxyhydroxides. Solid polyethylene (PE) remains with a degree of purity defined by the process efficiency. The results show that cellulose is efficiently extracted and converted into micro- and nanocellulose after 15 min of milling. In the second stage, approximately 90% of the aluminum is extracted from the PE after 15 min of milling. Due to the separation and drying medium conditions, the finely divided particles of extracted aluminum also have oxyhydroxides in their composition. It is believed that a passivation layer forms on the metallic aluminum particle. The techno-economic analysis revealed a positive net present value (NPV) of $17.5 million, with a minimum selling price of 1.62 USD/kg of cellulose. The environmental analysis concluded that most of the environmental impact of the process is associated with the entry of carton packages into the system, incorporating a small environmental load related to the industrial process. The results indicate a promising option toward a circular economy and carbon neutrality. (AU) | |
| Processo FAPESP: | 16/10636-8 - Da fábrica celular à biorrefinaria integrada Biodiesel-Bioetanol: uma abordagem sistêmica aplicada a problemas complexos em micro e macroescalas |
| Beneficiário: | Roberto de Campos Giordano |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa BIOEN - Temático |
| Processo FAPESP: | 20/15450-5 - Engenharia de sistemas em bioprocessos aplicada à produção de biofertilizantes: da biorefinaria integrada aos microrganismos |
| Beneficiário: | Andrew Milli Elias |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |
| Processo FAPESP: | 23/09673-0 - Desenvolvimento de tratamento mecanoquímico em via úmida para uso de lodo de ETA como matéria-prima para produção de fertilizantes de liberação controlada. |
| Beneficiário: | Roger Borges |
| Modalidade de apoio: | Bolsas no Brasil - Programa Fixação de Jovens Doutores |
| Processo FAPESP: | 22/10900-8 - Otimização multiobjetivo da produção de biofertilizantes considerando aspectos econômicos e ambientais |
| Beneficiário: | Andrew Milli Elias |
| Modalidade de apoio: | Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado |