The effect of electro-activation and eggshell powder on the neutralization of acid mine drainage

• Autorzy: Kastyuchik A. , Karam A. , Aïder M.

Identyfikatory

DOI

10.1016/j.jsm.2017.09.002

• Języki publikacji: EN

Abstrakty

EN

Acid mine drainage (AMD) production by sulfide mine tailing (SMT) is a major environmental preoccupation because it can degrade water surface quality on account of its strong acidity and advanced content of sulfide, iron (Fe) and other metals and metalloids. Acid neutralization and the precipitation of metals present in AMD were carried out by electro-activation with ion-exchange membranes, which is based on the self-generation of necessary conditions for acid neutralization and metal precipitation. The treatment of SMT was carried out by using an electro-activation cell generated alkaline solution in the cathode compartment. After 60 min of electro-activation, a pHcatholyte of 7.9-9.6, depending on the experimental conditions, was obtained. The absence of Fe and other trace metal ions in the catholyte provide evidence that the electro-activation of SMT promotes the precipitation of insoluble trace metals in the cathode compartment. This approach can be applied to real conditions in combination with a pretreatment of SMT neutralization, inwhich biological calcareous amendments are available. Finally, the electro-activation technology of acid mine drainage may be a feasible, cost-effective approach for SMT neutralization because it focuses on sustainable development.

Słowa kluczowe

EN

acid mine drainage; electro-activation; neutralization; effectiveness

PL

kwaśny odciek kopalniany; elektroaktywacja; neutralizacja; skuteczność

• Wydawca: Elsevier ; Główny Instytut Górnictwa
• Czasopismo: Journal of Sustainable Mining
• Rocznik: 2017
• Tom: Vol. 16, iss. 3
• Strony: 73--82
• Opis fizyczny: Bibliogr. 27 poz.

Twórcy

autor

Kastyuchik A.

• Department of Soil Sciences and Agri-Food Engineering, Universite Laval, Quebec, QC, G1V 0A6, Canada

autor

Karam A.

• Department of Soil Sciences and Agri-Food Engineering, Universite Laval, Quebec, QC, G1V 0A6, Canada

autor

Aïder M.

• Department of Soil Sciences and Agri-Food Engineering, Universite Laval, Quebec, QC, G1V 0A6, Canada

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