Treatment of acid mine drainage through a ferrite formation process in central Hokkaido, Japan: Evaluation of dissolved silica and aluminium interference in ferrite formation

Effect of neutralized solid waste generated in lime neutralization on the ferrous ion bio-oxidation process during acid mine drainage treatment

“…Similar results also were reported by Pan et al [37]. As mentioned before, ferric hydroxide and calcium sulfate are the dominant components of solid waste from the AMD lime neutralization process [12,16]. However, the X-ray signature of ferric hydroxide has not been examined in the XRD pattern of NSW.…”

“…A commonly used chemical method for treating AMD is lime neutralization, which raises the pH and removes the iron and sulfate, mainly through the formation of ferric hydroxide and calcium sulfate [12,16]. Oxidation of ferrous ions to ferric ions is required prior to lime neutralization since ferric ions could precipitate at a much lower pH than ferrous ions [17].…”

Metals and sulphate removal from acid mine drainage in two steps via ferrite sludge and barium sulphate formation

“…Thus, there is a strong need for a technology that gives sustainability treatment method to AMD. Especially, ferrite processes being suggested as sustainable alternative, mainly because it may be possible to produce an industrially useful chemical out of wastewater (Herrera et al, 2007b). Ferrites are metal oxides with spinel structure, with the general formula of AB 2 O 4 (AOÁB 2 O 3 ), where A and B are metallic ions with oxidation state of +2 and +3, respectively.…”

Application of a Peat-humic Agent for Treatment of Acid Mine Drainage

“…Various agents such as limestone, lime, clay, activated carbon, zeolite, iron (III) hydroxide, fly ash, cellulose, and rice husks (Chockalingam and Subramanian 2006;Cravotta and Ward 2008;Gabr and Bowders 2000;Herrera et al 2007;Kumar Vadapalli et al 2008;Lee et al 2004;Nogueira da Silveira et al 2009;Pérez-López et al 2007;Ríos et al 2008;etc. ), different protective screens (Doncheva and Pokrovskiy 1999;Ji and Kimb 2008;Kovalev et al 2000;Maximovich and Blinov 1994;Maximovich et al 1999;Sergeev et al 1996;Zosin et al 2004;etc.…”