Air quality is a concern worldwide. Consequently, efficient means to monitor air pollutants are critical. Current commercially available carbon-based sorbents used for sampling volatile organic compounds (VOCs) in air typically require solvent extraction prior to analysis and they cannot be re-used...

The invention relates to a novel process of partial oxidation of un-agglomerated chromite ore in ferrochrome production processes.

The process includes the steps of:

  1. providing a source of un-agglomerated chromite ore;
  2. subjecting the source of un-agglomerated chromite ore;
  3. to pre...

The North-West University (NWU) is pioneering the novel use of Europium-Tellurium-Oxide (ETO) in the production of clean energy. ETO is a light-chargeable catalyst material that exhibits sustained and enhanced activity after light excitation has ended. Its unique characteristics present an...

Tungsten carbides coatings are used in drills and cutting tools to provide a desirable operational lifetime of the coatings in use, as they have enhanced mechanical and wear properties. They are typically deposited using thermal spraying techniques. Tungsten carbides deposited using these techniques...

Fly ash, is a waste by-product from the coal-fired electricity generating stations. Power stations need to dispose of the fly ash in a safe and environmentally friendly manner, making the need to utilize fly ash important. The production of zeolites is one way to beneficiate the fly ash waste where...

Solvent extraction (SX) is one of the major separation and purification unit operations in hydrometallurgy. Its power lies in the highly selective solvents that are commercially available. Mixer-settlers and extraction columns are the conventional process configurations. In SX, the aqueous pregnant...