The invention relates to the use of maghemite nanoparticles at pH less than 5 to remove sulphate, manganese, copper, nickel, cobalt and zinc metal ions from acid mine drainage (AMD). In conventional AMD treatment, these pollutants are only removed at higher pH, and that requires costly alkaline
The North-West University (NWU) has pioneered 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

Almost 1 million South African Deaf people use South African Sign Language (SASL) as their primary means of communication as often they cannot speak, read nor read lips in any of the eleven official spoken/textual languages. This multi-ethnic group comprises Deaf South Africans who are largely

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Green Coal is environmentally friendly coal briquettes produced from discarded fine coal, bio-char material, and proprietary chemical binders. The briquette reduces sulphur emissions during combustion by approximately 50%, while also increasing the burning effectiveness. The bio-char addition to the

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Connecting Communities Zenzeleni is a solar-powered, community-owned Wifi telecommunications network solution providing affordable communications to remote rural areas. Through the use of wireless mesh networking, users are able to make free internal voice-over IP calls, while the cost of breakout

Coarse particle transportation is essential for moving slurries, or fluids containing very high concentrations of pulverised solids, for example, hydraulic transport of coal ore or waste materials. Due to a scarcity of water and a high concentration of the solid particles, pipe blockages are common