http://repositorio.ufc.br/handle/riufc/503 2026-04-04T20:08:14Z http://repositorio.ufc.br/handle/riufc/69409 Título: Estudo da recuperação e aproveitamento de finos de minério em um reservatório de rejeitos Autor(es): Souza, Deni Otávio Oliveira de; Monteiro, Fernando Feitosa; Oliveira, Francisco Heber Lacerda de; Aguiar, Marcos Fábio Porto de Tipo: Artigo de Evento 2019-01-01T00:00:00Z http://repositorio.ufc.br/handle/riufc/69408 Título: Análise experimental da influencia da energia de compactação nas características mecânicas do solo Autor(es): Barros, Eduardo Hélio Costa; Sousa, João Sabóia de; Aquiar, Marcos Fábio Porto de; Oliveira, Francisco Heber Lacerda de Tipo: Artigo de Evento 2014-01-01T00:00:00Z http://repositorio.ufc.br/handle/riufc/69234 Título: Modelagem numérica de coberturas secas aplicadas sobre rejeitos de mineração Autor(es): Soares, Anderson Borghetti; Soares, Paulo Sérgio Moreira; Possa, Mario Valente; Souza, Vicente Paulo de Tipo: Artigo de Evento 2013-01-01T00:00:00Z http://repositorio.ufc.br/handle/riufc/69167 Título: Comparativo entre tensoativos orgânicos e inorgânicos em processo de flotação por ar dissolvido utilizando efluente de lagoa de alta taxa para cultivo de microalgas (LAT) alimentada com efluente sanitário Autor(es): Barroso Júnior, José Carlos Alves; Gómez, Eddie Francisco; Hoyos, Nestor Leonel Muñoz; Monteggia, Luiz Olinto; Yamashita, Gabrielli Harumi Abstract: The availability of clean and renewable energy for the future is one of the biggest challenges of society and is closely linked to global stability, economic prosperity and quality of life. The recovery of energy from biomass has been studied by several researchers in the last decades. An attractive alternative is the production of biomass coupled with treatment of effluents to allow for cost reductions. This work presents the cultivation of algal biomass in high-rate pond (HRP) with subsequent separation by dissolved air flotation (DAF) using two surfactants. The HRP was operated under two different regimes, varying the hydraulic retention time (HRT), which was initially operated with 3 days HRT and then 7.5 days. In the first regime it was obtained a biomass concentration of 90.7 ± 44 and of 125.6 ± 68.3 mg / L in the second. Moreover, the production per area was highest during the first operation regime 9.1 ± 4.4 g / (m² ∙ d) compared to the second 5.0 ± 3.4 g / (m² ∙ d). Separation of the biomass (dewatering) was achieved by means of DAF, using an organic flocculant (Tanfloc sg) and an inorganic coagulant (ferric chloride), the former being more effective for the removal of biomass, 88.2 ± 4.3% when compared to coagulant, 66.8 ± 11%. The operating costs per hour of ferric chloride was smaller, R$ 2.67, compared with Tanfloc sg, R$ 2.98, however to remove the same amount of biomass, Tanfloc sg showed lower cost. Tipo: Artigo de Evento 2016-01-01T00:00:00Z