Banca de DEFESA: AMANDA DE MACEDO PEIXOTO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : AMANDA DE MACEDO PEIXOTO
DATA : 19/12/2019
HORA: 10:00
LOCAL: Instituto de Geociências da UFBA
TÍTULO:

HYDROGEOCHEMISTRY OF THE FISSURAL AQUIFER OF CONCEÇÃO DE CONITÉ MUNICIPALITY, BAHIA, BRAZIL

PALAVRAS-CHAVES:

Hydrogeochemistry; Conceição Do Coité; Salinization

PÁGINAS: 50
GRANDE ÁREA: Ciências Exatas e da Terra
ÁREA: Geociências
SUBÁREA: Geologia
ESPECIALIDADE: Geologia Ambiental
RESUMO:

The municipality of Conceição do Coité, Bahia, is characterized by low rainfall and high evapotranspiration rates, so groundwater becomes an important option for the development of anthropic activities, which allow domestic exploitation, irrigation, among others. This work aims to characterize the groundwater hydrogeochemistry of Conceição do Coité, identifying the main chemical constituents present to evaluate their suitability for human use. Analytical data from 58 tubular wells archived in the CERB database in 2006 were processed and added to those obtained in this research in 2018. The data were used to characterize the quality of these waters for irrigation purposes and for an analysis of chemical and temporal evolution of 12 years. For the classification of the water type, the Piper triangular diagram was used, where the obtained chemical relations allowed to classify the waters as sodium chloride. In the evaluation of this resource for human consumption, it is concluded that they are improper for potability, however, for this confirmation, bacteriological analyzes are necessary. For irrigation water diagnosis, the SAR (Sodium Adsorption Ratio) diagram and Ayers & Westcot classification were used. For the spatialization of the results, thematic maps of the variables were made, using krigeagem as an interpolator to indicate areas that have groundwater that can be used. It was concluded that high salt concentrations may cause salinization and sodification of the soil and consequently deterioration of some crops. Comparing the analyzed parameters with the irrigation use patterns, it was observed precariousness that make their use in more than 70% of the analyzed wells unfeasible.

MEMBROS DA BANCA:
Presidente - 287703 - MANOEL JERONIMO MOREIRA CRUZ
Interno - 031.086.865-34 - SERGIO AUGUSTO DE MORAIS NASCIMENTO - UFBA
Externo ao Programa - 2420875 - OLGA MARIA FRAGUEIRO OTERO