Estimativa da geração de nitrogênio reativo em duas instituições de ensino superior da região Nordeste do Brasil

• Autor(a) principal: Lima, Rodrigo Gallotti
• Data de Publicação: 2018
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: Repositório Institucional da UFS
• Texto Completo: http://ri.ufs.br/jspui/handle/riufs/8607
• topic: Nitrogênio; Universidades e faculdades; Ciclo do nitrogênio; Gestão ambiental; Fluxo de nitrogênio; Campus sustentáveis; Nitrogen cycle; Flow of nitrogen; Sustainable campus; Environmental management; OUTROS

Nitrogen in its molecular form (N2) is an available gas that makes up 78% of the atmospheric air and is characterized by being a stable and inert gas. The other nitrogen-based reactive species (Nr) are generated through innumerable natural and anthropogenic processes. When poorly applied, it is an agent harmful to agriculture and forests. The same Nr atom can cause multiple undesirable effects on the atmosphere, on terrestrial and aquatic ecosystems as well as on human health. These effects are known as effects of the nitrogen cascade. The present work aims to estimate the sources of Nr at the Ondina Campus of the Federal University of Bahia (UFBA) and the São Cristóvão Campus of the Federal University of Sergipe (UFS), as well as propose alternatives to mitigate and/or compensate, the generation of Nr on these campuses. To do so, this exploratory thesis made use of bibliographical review and field visits in both campuses to obtain the data of electric energy consumed, terrestrial and aerial trips made by the academic community, food, waste and effluent of the campus among others necessary estimate of such emissions. As main results, it was observed that in relation to Ondina Campus by UFBA, its sources were estimated, where the highest emission was related to the aerial trips of this campus carried out by the academic population that represents about 60% of all campus broadcasting. As for São Cristóvão Campus by UFS, the highest estimated emission was related to the transportation of buses that serve the academic community, which represented about 30% of the total emission of said campus. There were several negative environmental aspects in both institutions, such as the significant waste of food, unnecessary use of energy-consuming equipment, irrational use of fuel in official cars of the campus, use of many private cars with only one individual, drastic reduction of green areas for construction of buildings, among others. In view of the diagnoses made, several mitigating actions were suggested to minimize the generation of reactive nitrogen in these campuses, mainly focusing on the aspects identified with higher emission value, namely: reduction of air travel opting for the use of computer technology, when justified for the purpose of evaluating academic work; Reduction of the use of animal protein based diets; Encourage the use of collective transportation when possible as well as generate a carpool program in the case of private cars; Segregate, treat and store urine generated on campus, taking advantage of fertilizer for green areas etc.