v. 34 n. 1 (2021): Revista ION
Artigos

Avaliação ambiental para a produção de microesferas de quitosana modificadas com TiO2 e magnetita usando o algoritmo de redução de resíduos (WAR)

Eduardo Aguilar Vásquez
Universidad de Cartagena
Ángel González-Delgado
Universidad de Cartagena

Publicado 2021-05-27

Palavras-chave

  • Algoritmo WAR,
  • Nanopartículas,
  • Quitosana,
  • Análise Ambiental,
  • Produção

Como Citar

Aguilar Vásquez, E., & González-Delgado, Ángel. (2021). Avaliação ambiental para a produção de microesferas de quitosana modificadas com TiO2 e magnetita usando o algoritmo de redução de resíduos (WAR). REVISTA ION, 34(1), 121–136. https://doi.org/10.18273/revion.v34n1-2021010

Resumo

Atualmente, os bioadsorventes modificados por nanopartículas têm se tornado relevantes como uma possível opção no tratamento de águas poluídas devido ao seu baixo custo, abundância natural e alta eficiência. Os processos em escala industrial foram projetados para produzir microesferas de quitosana modificadas. Porém, estes devem ser analisados sob critérios de sustentabilidade antes de uma possível implementação. Neste trabalho, o desempenho ambiental de um processo em escala industrial foi avaliado por meio do algoritmo WAR, que serve de base para possíveis projetos econômicos. O processo foi simulado usando o software Aspen Plus ® para obter informações do processo, como fluxos de massa e energia. A avaliação foi realizada no software WARGUI. O Impacto Ambiental Potencial (PEI) de quatro estudos de caso foi quantificado usando quatro abordagens de impacto. Essa análise gerou valores negativos no total de PEIs gerados. Valores de taxa de até 5740 PEI/h foram encontrados para a taxa de saída do PEI. Nas categorias toxicológicas não houve valores apreciáveis (entre -212 e -1,21 PEI/h) para nenhum caso devido à baixa presença de substâncias tóxicas no processo. Nas categorias atmosféricas, os PEIs são devidos principalmente ao uso de combustíveis. O gás natural teve o melhor desempenho ambiental relatando valores baixos para as taxas de PEI de geração e saída (-308, 4970 PEI/h, respectivamente). Diante do exposto, pode-se afirmar que o processo apresenta um desempenho ambiental aceitável.

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