Leaching and separation of zinc from the black paste of spent MnO2-Zn dry cell batteries

Fate of Polychlorinated Dibenzo-p-dioxins and Dibenzofurans during the Thermal Treatment of Electric Arc Furnace Fly Ash

“…There are several methods for treating hazardous solid waste, including acid leaching, cementation, sintering and vitrification (Cheeseman et al, 2005;Park et al, 2005;Wu and Ting, 2006;Browers et al, 2007;El-Nadi et al, 2007). The vitrification approach has been shown to successfully treat hazardous materials, such as fly ash and sludge (Li et al, 2007a;Chou et al, 2009;Kuo et al, 2009;Wang et al, 2010c).…”

Stabilization of Residues Obtained from the Treatment of Laboratory Waste. Part 1—Treatment Path of Metals in a Plasma Melting System

“…[1][2][3][4][5] Solidification with cement is the most common way of stabilizing hazardous materials because of its low cost. 6 However, the leaching of hazardous materials from solidified specimens may cause secondary pollution in the long term.…”

Comparative leaching of spent zinc-manganese-carbon batteries using sulfur dioxide in ammoniacal and sulfuric acid solutions

“…grades of starting material (Panero et al, 1995;Pietrelli et al, 1999;Rabah et al, 1999;Salgado et al, 2003;Xi et al, 2004;De Souza and Tenario, 2004;Nan et al, 2006;Avraamides et al, 2006;El-Nadi et al, 2007;Freitas et al, 2007;Shin et al, 2007;De Michelis et al, 2007;Peng et al, 2008;Ferella et al, 2008;Kim et al, 2009;Shin et al, 2009;Sayligan et al, 2009a,b;Furlani et al, 2009). Reagents and unit operations used in recycling processes of ZMCBs are summarised in Table 1.…”

“…Unlike ZnO and Zn(OH) 2 , which can be quantitatively dissolved in acid, Mn(III/IV) oxides can only be partially dissolved in acid due to their low solubility in the absence of reducing agents (Ferella et al, 2008;El Nadi et al 2007;Sayilgan et al, 2009b;Zhang and Cheng, 2007). As shown in Table 4, the presence of SO 2 enhances the leaching of manganese from 35% to 98% and iron from <1% to to 25% due to the reductive role of SO 2 which produces Mn(II) and Fe(II).…”