2019-09-242019-09-242018-12-14SANTOS, Bruna de Melo. Eficiência de ecobarreiras em rio dominado por maré. Orientadora: Sury de Moura Monteiro. 2018. 45 f. Trabalho de Curso (Bacharelado em Oceanografia) - Faculdade de Oceanografia, Instituto de Geociências, Universidade Federal do Pará, Belém, 2018. Disponível em: https://bdm.ufpa.br/jspui/handle/prefix/2111. Acesso em:.https://bdm.ufpa.br/jspui/handle/prefix/2111Floating debris, which may either be carried through rivers until they reach the coastline and oceans or stay stop the water surface, are made up by a variety of different materials such as plastic, paper, wood, glass, latex, and metals, impacting the environment, human health, and the economy. The Floating Litter Traps are low cost structures used to stop inputs of debris on watercourses, taking advantage from the water stream itself to collect said debris, facilitating the whole process. This study focuses on the creation and development of a floating litter trap setup at a river overruled by the tide. This project was applied at the Tucunduba River (Belém, Pará), an environment characterized by hydrodynamics caused by semidiurnal meso-tide with an average height of 3 meters. Two different litter trap models were tested by the river mouth during a 2-hour period in an spring tide. The Floating Litter Trap Type 1 consists of 3 modules of 2 meters each, in which plastic bottles were wrapped with 20 centimeters of metal grille and another 80 centimeters of the grille was used to create an underwater barrier, operating much like an envelope. Meanwhile, the Floating Litter Trap Type 2 consists of only 1 module of a 16 meters length with no addition of an underwater barrier. The collected debris were sorted so to separate organic waste, while the debris were dried up and later identified, classified, quantified, and weighed out. Both models collected a total of 17.981 grams with 787 items of different materials. Plastic was the most collected with 458 items, 58% of the total, followed by polystyrene foam with 104 items, 13% of the total. On the first model, the debris the litter trap collected were closely combined with organic waste and there was also a greater physical effort to maintain the structure. Thus, the second litter trap model showed a better possibility of reapplication since the presence of organic waste was at a minimum as well as the effort during installation. This study’s results can help other communities with similar characteristics while fighting against the inputs of floating debris, resulting in a more sustainable and collaborative world.Acesso AbertoResíduos flutuantesSustentabilidadeTecnologia socialEcobarreiraCNPQ::CIENCIAS EXATAS E DA TERRA::OCEANOGRAFIATrabalho de Curso - Graduação - Monografia