Towards electrochemical iridium recycling in acidic media: effect of the presence of organic molecules and chloride ions.

The utilization of iridium is expected to surge in the next few years, notably due to the rising implementation of water electrolyzer devices in the energy transition. However, the natural resources of this noble metal are extremely limited and thus its recycling will become of high importance. Unfortunately, iridium is also the most corrosion resistant platinum group metal, making its recovery from waste a difficult and energy-demanding process. Hereby, we study the impact of organics and chloride ions on the electrochemical dissolution of iridium in order to pave the way towards green recycling of this precious metal. We present a 40 times increased dissolution when cycling iridium in presence of HCl and 1 M ethanol compared to HClO4. Our results point towards the direction of destabilizing Ir at relatively mild conditions in acidic media.

[Use of adapted Maliutka and Malysh Propionibacterium acidophilus mixtures in the combined treatment of acute diseases of the gastrointestinal tract in infants]. / Primenenie propionovo-atsidofil'nykh adaptirovannykh smesei "Maliutka" i "Malysh" v kompleksnom lechenii ostrykh zabolevanii zheludochno-kishechnogo trakta u detei grudnogo vozrasta.

The efficacy of the adapted sweet, acidophilic and propionic-acidophilic mixtures Malyutka and Malysh included into a complex of therapeutic measures for acute gastroenterocolitis was studied and compared in 93 infants. The time course of gastroenterocolitis was the most favourable in children fed the propionic-acidophilic mixtures Malyutka and Malysh. As compared to children given the sweet and acidophilic mixtures Malyutka and Malysh, those fed propionic-acidophilic versions of the mixtures demonstrated more rapid elimination of the major symptoms and syndromes of disease and improvement of erythropoiesis.

[Use of propiono-acidophilus milk in the complex treatment of intestinal dysbacteriosis in infants with staphylococcal infections and sepsis]. / Ispol'zovanie propionovo-atsidofil'nogo moloka v kompleksnom lechenii kishechnogo disbakterioza pri stafilokokkovoi infektsii i sepsise u detei grudnogo vozrasta.

Antistaphylococcal properties of the new lactic acid mixture propionic acidophilic milk (PAM) against the microbe isolated from feces of children suffering from staphylococcal sepsis were comparatively studied by the dilution and diffusion methods. PAM was found to have more pronounced antimicrobial properties against pathogenic staphylococcus than acidophilic milk and kefir. It is recommended to include PAM into the diet of children with intestinal dysbacteriosis.