Acid mine drainage remediation options: a review

Fate of sulphate removed during the treatment of circumneutral mine water and acid mine drainage with coal fly ash: Modelling and experimental approach

“…Biological treatment using sulphate reducing bacteria (SRB) and chemical treatment using lime and limestone are usually employed for heavily contaminated mine water. Ion exchange and membrane methods are too expensive for the treatment of heavily contaminated mine water and pretreatment is generally required to avoid fouling of membranes and resins (Adriano et al, 1980;Bosman, 1983;Conlon, 1990;Johnson and Hallberg, 2005;Maree et al, 1989;Hlabela et al, 2007;Hammack et al, 2006). Due to the high costs associated with chemical treatment technologies and long residence time requirement for biological treatment, there has been a concerted effort towards developing a cost effective alternative technology for treatment of mine water .…”

The Catalytic Role of Acidithiobacillus ferrooxidans for Metals Extraction from Mining - Metallurgical Resource

“…This leads to the occurrence of acid mine waters -acid mine drainage (AMD), which adversely affect the ecosystem. Therefore, various methods have been developed 92 for the treatment of the acidic, metal-rich mine waters. One of these methods is the biological remediation of acidic mine waters.…”

Non-invasive flow path characterization in a mining-impacted wetland

“…However, AMD transport in the near-surface is complicated by attenuation mechanisms, including reactions of sorption, complexation, precipitation-dissolution, oxidation-reduction, and biological uptake (Gandy et al, 2007). In particular, wetlands have been identified as settings that host many AMD attenuating reactions due to their steep redox and dissolved organic matter (DOM) concentration gradients (Johnson & Hallberg, 2005). Wetlands with clay deposits can also host sorption reactions as positively charged metals adsorb to negatively charged clay particles or organic material (Sheoran & Sheoran, 2006).…”

“…Wetlands have the capacity to precipitate metal sulfides (Sheoran & Sheoran, 2006) and adsorb positive metal ions to negatively charged clay particles or organic material (Johnson & Hallberg, 2005). The longer flow paths and slower velocities of subsurface flow allow for greater contact time with biogeochemically active attenuating features, therefore flow through the subsurface can be particularly important to promoting removal processes (Gandy et al, 2007;Mulholland & DeAngelis, 2000).…”