In electrowinning, metals ions dissolved in an electrolyte are deposited in a reduced metallic form at the cathode. The conversion of the metal from an ionic (dissolved, positive charge) to metallic form (solid, no charge) at the cathode requires a supply of electrons into the electrolyte solution which is supplied from the anode.
Topics: electrowinning, anodes
Electrowinning is a very convenient and robust way to directly recover dissolved metals such as copper, silver, gold, nickel, cobalt, and tin from their aqueous states in a particular electrolyte. Not surprising then when talking about metal recovery that we tend to focus most of our attention on those metals that we are interested in with the aim of recovering them from solution. That is after all the objective of the metal recovery process. What is less often talked about however are the impurities that can affect metal recovery with electrowinning. This blog post will identify those impurities that are most detrimental and discuss their effect on the electrowinning of some commonly recovered metals from aqueous solutions.
Topics: Video
Topics: Refinery Optimization
Topics: Wastewater Treatment
Topics: Video
It’s no secret that industrial pollution is harmful to the environment and human health.
Topics: Wastewater Treatment
In one of the previous posts I described the basic principle of conventional electrowinning. Today I would like to talk about the differences between conventional electrowinning and proprietary emew technology, which is based on fundamental electrowinning tenets but offers so many additional benefits.
Topics: Video
Many industries generate acid mist as a result of their industrial processes. In most cases the acid mist will be caused by usage of inorganic acids, and in particular sulfuric acid. Sulfuric acid is mostly used in a production of fertilizers, and industries like pulp and paper, iron and steel, mining, refining and wastewater treatment. Acid mist is formed as a condensation of acid vapour and the extent of the mist will depend on the industry, process and solution itself.
Topics: Video
