Banca de DEFESA: DANIEL PEREIRA DE MORAIS

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : DANIEL PEREIRA DE MORAIS
DATE: 25/07/2024
TIME: 09:00
LOCAL: Sala de Aula 01 do PPG em Engenharia Ambiental
TITLE:

ENVIRONMENTAL MONITORING OF SOILS, WATER AND SEDIMENTS TO PROMOTE THE PROTECTION AND CONSERVATION OF SPRINGS IN THE MUNICIPALITY OF JUREMA, PERNAMBUCO

KEY WORDS:

Environmental diagnosis; geochemical signature; geostatistical investigation; water supply; environmental policies.

PAGES: 65
BIG AREA: Engenharias
AREA: Engenharia Sanitária
SUMMARY:

Environmental monitoring that involves biotic, climatological, or pedogenetic factors is a fundamental step in the process of protecting and conserving water resources. Developing a continuous environmental diagnosis in a given geographic region means understanding its current state and predicting the future quality of natural resources. Based on this, it is possible to produce a geochemical signature and estimate sustainable practices for ecological restoration, environmental improvement, socioeconomic opportunities, and the strengthening of political and social relations. In the agreste of Pernambuco, a region with considerable environmental vulnerability, there are municipalities with potential conditions for water supply support, such as the city of Jurema. Under this hypothesis, the present study aimed to propose a diagnosis capable of associating geochemical and environmental aspects of surface water, groundwater, soils, and sediments with strategies for the management, conservation, and recovery of water bodies, not only in the mentioned municipality but in the entire geographic region in which it is located. The research was initially developed with information on soils and sediments contained in publicly accessible databases and the literature. Subsequently, field samples of the same materials, including water, were collected, following a pre-established and georeferenced planning sequence of points. The integration of the databases occurred through suites of multivariate statistical applications, whose method was capable of analyzing the relationship between two or more data sets, in addition to establishing the interdependence between hidden variables. Digital maps were produced using geoprocessing and remote sensing tools in applications that employ methodologies such as kriging in the interpolation of sampling points to compose isoconcentration curves. The initial results show a broad macro aspect, taking the Rio Una watershed as a reference, where its chemical signature revealed positive characteristics regarding the environmental conservation state of the soil, indicating specific regions with possible sources of anthropogenic contribution. The digital maps allowed for the establishment of a geochemical relationship between the elements Hafnium and Aluminum (Hf/Al). This made it possible to attest that the area's behavior is directly influenced by the region's climatological conditions. For the results of surface and groundwater, which aimed to evaluate their potential for supply in areas with water scarcity, using physical-chemical parameters such as pH and electrical conductivity (CE), they indicated high levels (10,110 μS/cm) in artesian wells, possibly due to natural contributions of geological and/or pedogenetic origin. In contrast, the springs showed low CE values (82.2 μS/cm) and pH within the parameters established by current legislation. Finally, the results of the chemical analyses of the spring sediments showed points with anomalies in heavy metals (As, Cu, Pb, and Zn) above quality reference levels, indicating environments with a risk to human health. The study demonstrated that the proposed methodologies for environmental monitoring, using geostatistical and chemometric interpolation, enable the achievement of satisfactory results and allow reliable inferences about the investigated parameters.

COMMITTEE MEMBERS:
Presidente - ALEX SOUZA MORAES
Externo ao Programa - 2722603 - JULIO DA SILVA CORREA DE OLIVEIRA ANDRADE - nullExterno à Instituição - OTÁVIO PEREIRA DOS SANTOS JUNIOR