The amount of sodium sulfate waste generated during the production of 1 metric ton of precursors for battery cathodes, according to a 2022 report by RWTH Aachen University and the consulting firm ...

Anaerobic ammonium oxidation (anammox) bacteria, which were discovered in waste-water sludge in the early 1990s, have the unique metabolic ability to combine ammonium and nitrite or nitrate to ...