High-Iron Bauxite Residue (Red Mud) Valorization Using Hydrochemical Conversion of Goethite to Magnetite.

Bauxite residue (BR), also known as red mud, is a byproduct of the alumina production using the Bayer process. This material is not used to make iron or other iron-containing products worldwide, owing to its high content of sodium oxide and other impurities. In this study, we investigated the hydrochemical conversion of goethite (FeOOH) to magnetite (FeO) in high-iron BR from the Friguia alumina refinery (Guinea) by Fe ions in highly concentrated alkaline media.

[Impact of the COVID-19 pandemic on the activities of the cardiology department of the Ignace Deen National Hospital at the Conakry University Hospital].

The new coronavirus pandemic (COVID-19) is the main global health crisis of our time and the greatest threat we have faced in this century. According to the National Health Security Agency (ANSS), which is the national body responsible for managing epidemics and pandemics, 1927 cases of COVID-19 were confirmed, 11 deaths with more than 4000 contact subjects. The objective of this study was to assess the impact of the COVID-19 pandemic on the activities of the cardiology department of the Ignace Deen National Hospital at the Conakry University Hospital.