Evaluation of in situ layers for treatment of acid mine drainage: a field comparison

Water Research
Andrea H M HulshofW Douglas Gould

Abstract

Reactive treatment layers, containing labile organic carbon, were evaluated to determine their ability to promote sulfate reduction and metal sulfide precipitation within a tailings impoundment, thereby treating tailings effluent prior to discharge. Organic carbon materials, including woodchips and pulp waste, were mixed with the upper meter of tailings in two separate test cells, a third control cell contained only tailings. In the woodchip cell sulfate reduction rates were 500 mg L-1a-1, (5.2 mmol L-1a-1) this was coupled with the gradual removal of 350 mg L-1 Zn (5.4 mmol L-1). Decreased delta13CDIC values from -3 per thousand to as low as -12 per thousand indicated that sulfate reduction was coupled with organic carbon oxidation. In the pulp waste cell the most dramatic change was observed near the interface between the pulp waste amended tailings and the underlying undisturbed tailings. Sulfate reduction rates were 5000 mg L-1a-1 (52 mmol L-1a-1), Fe concentrations decreased by 80-99.5% (148 mmol L-1) and Zn was consistently <5 mg L-1. Rates of sulfate reduction and metal removal decreased as the pore water migrated upward into the shallower tailings. Increased rates of sulfate reduction in the pulp waste cell were consist...Continue Reading

References

Nov 19, 2003·Environmental Science & Technology·Andrea H M HulshofW Douglas Gould
Jul 2, 2005·The Science of the Total Environment·Lovisa Stjernman Forsberg, Stig Ledin

❮ Previous
Next ❯

Citations

Feb 22, 2012·Environmental Monitoring and Assessment·Omar R Salinas VillafaneToshio Takase
May 24, 2011·Journal of Hazardous Materials·Oriol GibertJosé Bolzicco
May 20, 2011·Journal of Contaminant Hydrology·Matthew B J LindsayPeter D Condon
Aug 4, 2010·Journal of Hazardous Materials·Georgios Bartzas, Kostas Komnitsas
Jan 15, 2008·The Science of the Total Environment·S WinchD R S Lean
Jan 19, 2007·Journal of Microbiological Methods·Hyunsuk HongKenneth F Reardon
Mar 29, 2008·Bioresource Technology·Navarro Flores Andrés, Martínez Sola Francisco
Dec 31, 2010·Journal of Hazardous Materials·Andrés NavarroMercé Corbella
May 16, 2013·Journal of Environmental Quality·Corina M McDonaldPeter D Condon
Nov 23, 2016·World Journal of Microbiology & Biotechnology·Yen T NguyenHarald Horn
Oct 8, 2009·Environmental Science & Technology·Matthew B J LindsayCarol J Ptacek

❮ Previous
Next ❯

Related Concepts

Related Feeds

Bioremediation (ASM)

Bioremediation is the treatment and removal of harmful pollutants or contaminants through the use of microorganisms. Discover the latest research here.