Investigating graphene oxide permeable reactive barriers for filtering groundwater contaminated from hydraulic fracturing
DOI :
https://doi.org/10.18192/osurj.v1i1.3705Résumé
La fracturation hydraulique est une méthode d’extraction de gaz naturel qui consiste à pomper une solution de saumure dans le sol pour créer une fracture qui permettra au gaz naturel de monter. L’une des principales préoccupations entourant cette méthode d’extraction du gaz naturel est que les eaux usées pénètrent dans l’eau souterraine et la contaminent. Cette eau usée contient des matières toxiques telles que des ions de métaux lourds, des radionucléides et d’autres sels et composés organiques à des concentrations élevées. Certains de ces matériaux sont cancérigènes et donc préoccupants pour la vie humaine et l’environnement. La solution actuelle implique l’utilisation d’une barrière réactive
perméable (BRP) en fer zéro valent (FZV) pour filtrer ces substances toxiques. Cependant, elle n’est pas très efficace puisqu’elle provoque plus d’encrassement dû à l’accumulation de précipités minéraux. Un développement récent en nanotechnologie peut nous permettre de développer un filtre à eau supérieur pour empêcher la contamination des eaux souterraines. Par conséquent, une nouvelle BRP est proposée qui utilise l’oxyde de graphène solide (OG), un nanomatériau doté d’une capacité de sorption supérieure est proposé comme remplacement pour le système. L’expérience proposée testera la capacité de filtration de la GO-BRP par rapport à la FZV-BRP traditionnelle. En imitant le processus de contamination et d’écoulement des eaux souterraines à l’aide de matériaux communs trouvés dans les eaux usées de fracturation, nous pouvons déterminer à quel point la GO-BRP est plus efficace que la FZV-BRP.
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