Browse

To investigate the reactivity of various mineral groups with oxalic acid, a series of long-term beaker experiments were conducted using a saturated solution of oxalic acid dihydrate (~50 g/100 mL) in distilled water, heated to >100 -C to enhance dissolution efficiency. The selected samples represented a broad range of mineralogical classes: brochantite (hydroxy-sulfate), malachite (carbonate hydroxide), pyrite (sulfide), chrysotile (silicate), and a Fe- and Cu-rich metallurgical slag containing complex, heterogene...