Citric acid, Nickel metal hydride (NiMH) batteries, Rare earth elements (REEs), Recovery, Selective precipitation, Subcritical water extraction (SWE).
Acid leaching, coal fly ash (CFA), rare earth elements (REEs), recovery, subcritical water extraction (SWE)
Extraction, hydrogen peroxide, microwave, phosphogypsum, phosphorus, rare earth elements
Acid leaching, advanced oxidation process, hydrogen peroxide, microwave, nickel-metal hydride batteries, rare earth elements.
Acid leaching, extraction, lithium-ion batteries, phosphorus, recovery, waste.