heavy metals found in urban air with its toxic effects have a direct impact on human health. selection of appropriate tree species and shrub refining capacity of heavy metals in urban areas can greatly reduce the toxic effects of these materials. this study aimed to identify the most suitable tree and shrub species of broadleaf evergreen, deciduous and coniferous refinement of heavy metals lead...

The aim of the study was to develop a process option for value addition leach residue from hydrometallurgical nickel refining. in question is copper-rich (58 %) with sulphur (23 %), (3 and iron (2 as other main constituents. prevailing phases are covellite antlerite already marketable product such. current suggests flow sheet moderate temperature autogenous pressure leach, selenium removal copp...

Arsenic content in copper concentrates is continuously increasing worldwide. It desirable to remove arsenic from the earlier stages of making due deposition cathode during electrorefining process. Effects temperature, flux, and oxygen on distribution converting fire refining processes were studied using FactSage 8.2. The results showed that can be effectively removed by proper selection slags. ...