There are important economic and environmental incentives to recycling. Unfortunately, secondary aluminum frequently contains undesirable impurity elements. These limit the amount of material that can be recovered, since usual practice has been meet alloy specifications by dilution (that is, blending with primary metal). In 2019, China curtailed importation scrap metal, which changed market in ...

Waste water purification is shown to be an important field of environmental hygiene for non-ferrous metal industries. Hydrometallurgy becomes of greater importance for metal production and refining. Quality standards for drinking water and rivers require a minimum of some harmful impurities, e.g. metal compounds. The unit operations of hydrometallurgy technologically parallel the methods of eff...

1. The work was created under the support of Czech Ministry Industry and Trade within frame programme TRIO in solution projects reg. No. FV10080 Research Development Advanced Refining Technologies Aluminium Melts for Increase Product Quality”.

In developing countries, rapid industrialization without environmental controls has resulted in heavy metal contamination of communities. We hypothesized that residential neighborhoods located near ore industries in three northern Mexican cities would be heavily polluted with multiple contaminants (arsenic, cadmium, and lead) and that these sites would be point sources for the heavy metals. To ...

Heavy metal homeostasis is maintained in plant cells by specialized transporters which compartmentalize or efflux metal ions, maintaining cytosolic concentrations within a narrow range. OsMTP1 is a member of the cation diffusion facilitator (CDF)/metal tolerance protein (MTP) family of metal cation transporters in Oryza sativa, which is closely related to Arabidopsis thaliana MTP1. Functional c...

Abstract Currently, recycled metal is diluted with primary to keep the concentration of alloying elements within specification. This will be more difficult in future, when a larger proportion made from scrap. Particularly, there need for process that can remove noble than aluminum scrap metal. While electrolytic refining three-layer cell (the Hoopes process) possibility; present paper presents ...

The efficacy of different refining stages on physicochemical parameters, heavy metal, and mineral contents sesame oil were investigated. from (crude oil, neutralization, bleaching, deodorization, stages) was taken the local factory in Yazd, Iran. fatty acid composition samples determined by GC-FID. oxidation indexes including peroxide value, p-Anisidine, free acid, TOTOX, total polar material, ...