TITLE:
Comparative Study on the Treatment of Leachate from a Mine Waste Dump with Two Agricultural Biowastes
AUTHORS:
Begoña Fernández Pérez, Julia Ayala Espina
KEYWORDS:
Adsorption, Mining Waste Leachate, Heavy Metals, Walnut Shells, Coffee Spent
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.9 No.9,
September
22,
2021
ABSTRACT: Mining waste dumps are present all over the world. One of the main problems
of these solid deposits is the migration of heavy metals present in them due to
the aqueous solutions flowing through them. The comparison of the removal of
heavy metals from an aqueous solution of a real mining waste leachate under
different conditions by two different agricultural wastes has been
investigated. The effect of pH, contact time and dosage was studied using
coffee grounds (CG) and walnut shells (WS), without pretreatment. The results
obtained in the study showed the potential use of CG and WS for the removal of
heavy metals, although the coffee grounds are the best adsorbents than the
walnut shell.