Fly ash injection into weathered mine waste
2013 (English)In: Annual International Mine Water Association Conference: Reliable Mine Water Technology / [ed] Brown, A.; Figueroa, L. & Wolkersdorfer, Ch., Colorado, USA: IMWA , 2013, 513-519 p.Conference paper (Refereed)
By adding alkaline ashes through injection to weathered mine waste pH increased approximately 3 units, trace element was immobilized and flow rate decreased due to formation of hard pans. Reduction in trace element concentrations was around 96.9-99.6 % for copper, 94.7-99.7 % for zinc and 22.9-99.8 % for cadmium. For lead the best reduction was 97.3 % and the worst -393 % (increase). MSWI ashes performed worst with low buffering capacity and increase in vanadium and molybdenum concentrations.
Place, publisher, year, edition, pages
Colorado, USA: IMWA , 2013. 513-519 p.
Sulfidic mining waste, MSWI ashes, trace elements
Research subject Chemistry
IdentifiersURN: urn:nbn:se:oru:diva-40590ISBN: 978-0-615-79385-6OAI: oai:DiVA.org:oru-40590DiVA: diva2:777756
International Mine Water Association Annual Conference 2013, Golden, USA, 6-9 August, 2013