Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DATA : 30/07/2021
HORA: 14:00

Influence of dumps and landfills on the contamination of abiotic natural compartments by potentially toxic metals


Solid waste. Trash. Porto Seguro. Bahia. Scientometrics. Soil.

ÁREA: Ciências Ambientais

The generation of solid urban waste (MSW) and the contamination of natural resources by toxic metals from these wastes have increased and have become a major concern over the years. The problem of MSW management is worldwide, as few countries have effective waste treatment and because waste can cause various environmental damage, including globally, when directed to unprepared units such as controlled landfills and dumps. Decomposing garbage releases various contaminants, including toxic metals, which usually reach the soil at first, but can migrate to other natural compartments and start to interfere with biochemical and metabolic processes in ecosystems. The resolution of the problems caused by garbage depends on the joint action of several factors, among which the production of quality scientific knowledge stands out to support decision making and the implementation of management plans, such as those established in the National Waste Policy Brazilian Solids (PNRS). Despite the PNRS having defined that Brazilian dumps should be extinguished in the short term, many municipalities still use this type of street as the final destination for their waste, as is the case in the city of Porto Seguro, Bahia. The Porto Seguro dump is located in a Permanent Preservation Area (APP) located in the Buranhém River basin, close to residences and on top of a land that houses important underground water sources, thus representing a potential source of contamination for natural resources and community in the region. Thus, this study was divided into two parts: in the first, a scientometric analysis was carried out to evaluate the production of scientific works that investigated the contamination of water, soil and / or sediment by toxic metals resulting from the decomposition of municipal solid waste in landfills and landfills, aiming to identify whether the studies had a diagnostic or mitigating character and justify the importance of both; in addition, the evolution of Brazilian scientific production on the topic was also observed after the implementation of the PNRS. In the second section, a diagnostic study will be carried out in the area near the Porto Seguro (BA) landfill to verify the hypothesis that the presence of the irregular garbage deposit contributes to the increase in the concentrations of toxic metals in the water and sediments of the Buranhém river and in the soil of the areas adjacent to the dump, the concentrations of toxic metals chromium, nickel, copper, zinc, cadmium and lead in water, soil and sediment will be evaluated, and water quality parameters, regulated by CONAMA Resolution 357/2005.

Interno - 962.287.925-04 - ALLISON GONÇALVES SILVA - IFBA
Externo à Instituição - DANILO JUNQUEIRA LEÃO - UESB
Externo à Instituição - MARCOS DE ALMEIDA BEZERRA - UESB
Presidente - 1956163 - NADSON RESSYE SIMOES DA SILVA
Notícia cadastrada em: 25/07/2021 23:26
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