Disposal of domestic sludge and sludge ash on volcanic soils

Nanoscale zero valent supported by Zeolite and Montmorillonite: Template effect of the removal of lead ion from an aqueous solution

“…4 illustrates the magnetic hysteresis of Z-nZVI and Mt-nZVI after the Pb 2+ sorption process. Similar results have been reported in recent sorption experiments of AsO 4 3− y Pb 2+ using nZVI [35,43]. The coercive fields (Hc) of both samples were obtained at room temperature, being ca.…”

Effect of cations in the background electrolyte on the adsorption kinetics of copper and cadmium and the isoelectric point of imogolite

“…Among the TE pollutants, Cd and Cu are the most common and are frequently studied because of their toxicity and abundance in the effluents [1][2][3][4][5][6][7][8][9][10]. The WHO has stipulated that the maximum concentrations of Cd and Cu in water for human consumption should not exceed 0.01 and 1.5 mg·L -1 , respectively [11].…”

“…1), 2.0-2.5 nm, and ~1.0 nm, respectively [20]. The high pKa 1 and pKa 2 values of these surface groups result in a positive surface charge over a wide pH range, which imparts excellent electrostatic characteristics to the external surface active sites, rendering them suitable for anionic interactions [22,[25][26][27][28].…”

Evaluation of Potential Methane Generation in the Investigation of an Abandoned Contaminated Landfill in Santiago, Chile

“…When abandoned, these sites may be converted to new land uses without additional regulation. Studies of contaminants in soils at these and other sites have been performed considering the type and extent of pollutants in the involved area (Romero et al, 1999;Ginocchio et al, 2004;Molina et al, 2009;Escudey et al, 2007;Badilla-Ohlbaum et al, 2001;Palma-Fleming et al, 2000). The systematic evaluation of SAPPC in Chile began only 5 years ago, in 2010, and has targeted defined areas that have been environmentally impacted by one or more potentially polluting activities, which ended at some point without a proper site closure process.…”