Terbium - Tb

Terbium (Tb)

Terbium is a soft, silvery lanthanide metal. It occurs in rare-earth minerals such as monazite and bastnäsite and is recovered with other rare-earth elements.

Uses and applications

Terbium compounds are used in phosphors and other luminescent materials. Terbium also forms magnetostrictive alloys with dysprosium and iron; these materials change shape in a magnetic field and are used in specialised devices.

Terbium and water treatment

Terbium is not a routine water-treatment reagent. Water and residues can be relevant in rare-earth mining, separation, and recycling, where process streams are assessed for their metal content and chemistry.

Occurrence and environmental context

Terbium is recovered from rare-earth minerals, commonly through processes that separate chemically similar lanthanides. Environmental behaviour depends on its chemical form, solubility, and interactions with minerals and dissolved substances in water and soil.

Health and safety

Health risks depend on the particular terbium compound and exposure route. Avoid inhaling dust, consult the relevant safety data sheet, and use appropriate occupational controls when handling metal or compounds.

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