Avaliação do Desempenho Ambiental do Aproveitamento do Biogás em Fecularias de Mandioca no Estado do Paraná

Abstract

ResumoO processo produtivo da mandioca gera resíduos com altas cargas orgânicas e componentes tóxicos. As indústrias desse setor tratam esses resíduos, na maioria das vezes, em lagoas de estabilização anaeróbias, nas quais se forma o biogás, um gás poluente que, se liberado para a atmosfera de forma indiscriminada, pode impactar no efeito estufa. O biogás, entretanto, pode ser recuperado dessas lagoas por meio da tecnologia de biodigestores e, por sua vez, aproveitado para alimentar as caldeiras em substituição à lenha nessas indústrias, gerando energia e diminuindo os impactos ao meio ambiente. O artigo tem, então, como objetivo, avaliar o desempenho ambiental da tecnologia de aproveitamento energético de biogás em indústrias processadoras de mandioca paranaenses, por

Eco-innovation assessment of biodigesters technology: an application in cassava processing industries in the south of Brazil, Parana state

“…In the first one, environmental management or monitoring practices were evaluated and it was identified that the three starch plants studied carried out some environmental conservation actions, involving a reduction in the consumption of water, electricity, water reuse, and selective collection of industrial waste. For water, soil, and air resources, the benefits refer to the reduction of about 90% in the demand for firewood, a reduction of 34 thousand tons CO 2 equivalent due to the capture of methane gas generated in the first effluent treatment pond, as presented by Guimarães et al (2014). Lansche et al (2020) used the life cycle assessment (LCA) tool to compare different scenarios of cassava production and processing and concluded that environmental impacts can be reduced if the biogas resulting from the use of waste is used for production of electricity and heat.…”

“…Previous studies have analyzed the biodigester technology studied here, however, limited to a single dimension of sustainability (Guimarães et al 2014), respectively, its environmental performance and economic viability, with positive results that the technology is sustainable. Even so, there was a gap in the proposal of new models that add other aspects or dimensions, contemplate different realities, and allow a joint evaluation between performances.…”