Inicio > Ciencias de la tierra, geografía, medioambiente, planificación > Ciencias de la tierra/geociencias > Impactos da exploração mineira no lençol freático de Izégouande, no Níger
Impactos da exploração mineira no lençol freático de Izégouande, no Níger

Impactos da exploração mineira no lençol freático de Izégouande, no Níger

Moussa Konaté / Tadewal Alfidja

124,81 €
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Editorial:
KS OmniScriptum Publishing
Año de edición:
2025
Materia
Ciencias de la tierra/geociencias
ISBN:
9786206778295
124,81 €
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Sobre IBD

Na bacia de Tim Mersoï, no norte do Níger, os depósitos de urânio são explorados há cinco décadas por duas empresas mineiras. O aumento da atividade mineira, combinado com o crescimento da população, está a colocar grandes exigências aos recursos hídricos subterrâneos do aquífero Permiano de Izégouande. Durante a última década, este aquífero contribuiu com quase 70% do abastecimento de água potável na zona mineira. O objetivo deste trabalho é mostrar o impacto das actividades mineiras no funcionamento hidrodinâmico do aquífero de Izégouande e na sua vulnerabilidade à poluição. Para atingir este objetivo, foi utilizada uma abordagem metodológica interdisciplinar, integrando a análise das curvas de isóbata e isopaque e o estudo dos parâmetros hidrodinâmicos e hidroquímicos. Foram elaborados vários diagramas (Chadha, Gibbs, Schöeller Berkaloff, etc.), bem como um mapa de vulnerabilidade do lençol freático à poluição. As PCAs, as relações binárias entre iões e o cálculo dos índices de saturação e de troca catiónica foram utilizados para determinar a origem da mineralização do lençol freático.

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