Valorisation of agri- and aquaculture residues via biogas production for enhanced industrial application

ABSTRACT: Climate changes are nowadays reality and affect all aspects of everyday life. One of the places where these changes influence the society the most is the Brazilian Ceara region and Jaguaribara basin that suffer long-lasting, devastating drought cycles. They have a dramatic negative impact on local economy, forcing change in business models. This work presents the valorisation of wastes and residues from local fish, prawns, and the vegetable-cultivation industry via biogas production forced to adapt to these new circumstances. Along a single year, as much as 189.74 tonnes of wastes and residues can be processed by the biogas production facility, producing as much as 94 GJ of cooling energy and 1 tonne of biofertiliser monthly. Even for such a small biogas production facility, the NPV is positive already after 11 years; its IRR is 6.2%, and accumulated ROI for 20 years of operation is as high as 77.8%. This work demonstrates that a valorisation of industrial wastes and residues via biogas production is a feasible solution for a specific industrial scenario addressing new socio-economic challenges for the particular enterprise.info:eu-repo/semantics/publishedVersio

Reflexão Geo-Historiografica: Política públicas de ocupação na Amazônia Ocidental- 1970 a 2002.

O estudo reúne informações sobre o processo colonizador do estado de Rondônia e suas dinâmicas em diferentes períodos

Mapping the Hidden Diversity of the \u3cem\u3eGeophagus sensu stricto\u3c/em\u3e Species Group (Cichlidae: Geophagini) From the Amazon Basin

South American freshwater ichthyofauna is taxonomically the most diverse on the planet, yet its diversity is still vastly underestimated. The Amazon basin alone holds more than half of this diversity. The evidence of this underestimation comes from the backlog of morphologically distinct, yet undescribed forms deposited in museum collections, and from DNA-based inventories which consistently identify large numbers of divergent lineages within even well-studied species groups. In the present study, we investigated lineage diversity within the Geophagus sensu stricto species group. To achieve these objectives, we analyzed 337 individuals sampled from 77 locations within and outside the Amazon basin representing 10 nominal and six morphologically distinct but undescribed species. We sequenced the mitochondrial cytochrome c oxidase subunit I (COI) and delimited lineages using four different single-locus species discovery methods (mPTP-15 lineages; LocMin-14 lineages; bGMYC-18 lineages; and GMYC-30 lineages). The six morphologically distinct but undescribed species were also delimited by the majority of the species discovery methods. Five of these lineages are restricted to a single collection site or a watershed and their habitats are threatened by human activities such as deforestation, agricultural activities and construction of hydroelectric plants. Our results also highlight the importance of combining DNA and morphological data in biodiversity assessment studies especially in taxonomically diverse tropical biotas

Assentamentos rurais no município de Pimenta Bueno: Evolução econômica no projeto casulo de assentamento formiguinha.

Este estudo tem o objetivo de apresentar uma sinopse da evolução geo-histórica econômica do Assentamento rural no Município de Pimenta Bueno, denominado Projeto de Assentamento Casulo Formiguinha, entre os anos de 2000 à 2016, com ênfase na fase inicial de sua formação. A concentração está, principalmente em dois convênios federais de fomento a economia local