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Aspects in Mining & Mineral Science

Membranes in Mining: Controlling CaSO4 Scale in AMD Minewaters

Submission: May 17, 2019; Published: July 25, 2019

DOI: 10.31031/AMMS.2019.03.000560

ISSN : 2578-0255
Volume3 Issue2


Membrane technologies are capable of assisting in the treatment of AMD minewaters to produce clean permate for reuse onsite and the concentrate stream can be used for the recovery of precious metals. Due to the harsh feed conditions associated with AMD waters rapid scaling and fouling can occur. In this mini review the authors have discussed the potential for scaling and fouling, particularly CaSO4 (gypsum) scale and have presented methods to prevent this using good pre-treatment and frequent cleaning. Genmine AS26 was developed as a low-pH specific antiscalant and Genmine C15 and Genmine C17 are cleaners used for the removal of CaSO4 scale.

Keywords: Acid mine drainage; Gypsum; Reverse osmosis; Antiscalant; Membrane cleaning

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