Removal of heavy metals present in groundwater from a northern Mexico mining community using Agave tequilana Weber extracts

Abstract

Modelado de la biodegradación en biorreactores de lodos de hidrocarburos totales del petróleo intemperizados en suelos y sedimentos (Biodegradation modeling of sludge bioreactors of total petroleum hydrocarbons weathering in soil and sediments)

Microbial electrochemical system for obtaining value-added products using a halotolerant bioanode

“…The material recovered at the bottom of the cathodic chamber had a flake-like appearance, characteristic of the precipitation of metallic species such as hydroxide (Figure 6), and which is not observed when recovering metallic species in their elemental form (Luo et al, 2014;Alcázar-Medina et al, 2020).…”

Influence of initial copper concentration, pH, and cross-linked alginate-chitosan and alginate-chitosan-Aspergillus australensis composite beads on the adsorption capacity and removal efficiency of copper ions

“…In an acid mine drainage characterization from the Tiza mine a copper concentration of 12 mg/L was found (Cervantes Macedo, 2014). Groundwater from a mining community in the North of México was collected for characterization, and a concentration of copper of 210 mg/L was found (Alcázar-Medina et al, 2020). Therefore, it is necessary to design technologies that contribute to the removal of high heavy metal concentrations from mining spills and thus avoid the impact of these contaminants on the ecosystem.…”

Bioleaching of As from mine tailings using an autochthonous Bacillus cereus strain

“…Heavy metals are defined as those elements with a density ≥ 5 g/cm 3 that possess metallic properties such as ductility and conductivity. Their danger lies in their capacity to be easily adsorbed by living organisms since they tend to accumulate even in the environment, causing serious diseases and even death (Meléndez-Sánchez et al, 2021;Alcázar-Medina et al, 2020;Beltrán-Pineda and Gómez-Rodríguez, 2016). In Mexico, As is found in greater proportion in the states of Durango and Coahuila, where concentration from 0.007 to 0.740 mg/L have been reported in agricultural wells; 0.009 to 0.149 ppm and 0.08 to 0.15 ppm in groundwater, urban and rural zones, respectively; and up to 30 µg/g in soil (Rangel-Montoya and Balagurusamy, 2015;Martínez-Prado et al, 2013).…”