Bacterial generation of liquid arsenic waste and the application of water-soluble polymers for arsenic ions separation

Abstract

Two aspects of the bio-geo-chemical arsenic cycle in the environment are analysed. The bioleaching and chemical weathering of selected arsenic bearing minerals are presented. The natural bacteria adaption to the higher concentration of arsenic ions is described. The secondary precipitation of minerals containing arsenic was discussed regarding the immobilisation of arsenic ions in soil. Water-soluble polymers are combined with membranes to remove arsenic species under different experimental conditions.

Advances in bioleaching as a sustainable method for metal recovery from e-waste: A review

“…However, other criteria such as appearance of significant amount of soluble Fe and Cu and Fe(II)/Fe(III) lower than one, ferrous iron oxidation rate similar to those obtained in the waste free medium and equal metal dissolution rate in two consecutive sub-cultures have been used for considering the microorganisms as adapted when working with mineral ores [87]. Easier adaptation was reported for bioleaching of solid waste containing heavy metals when larger particle size of the waste were used [88].…”

Teaching Polymer Science in the Department of Polymers at the University of Concepción, Chile: A Brief History

“…From the first alchemists to the emerging materials scientists, this target has been their lives’ quest. − In that regard, it seems that the sentence “the union makes the force” has led molecules to form one of the most versatile classes of materials of our history: polymers. “Men couldn’t have reached the moon if polymers hadn’t existed” confirms a prolific researcher in the field of polymer–metal ion interactions − at the Department of Polymers (DP) of the University of Concepción (UdeC).…”