Elemental Sulfur

- Obtained from:

- free element in volcanic vents

‘mined’ by Frasch process

- minerals : FeS2 (pyrite), PbS2 (galena)

Cu2S (chalcocite)

(S produced as by-product of metal extraction)

- natural gas and oil processing

desulfurization:

2 H2S (g) + SO2 (g) ? 3 S (s) + 2 H2O (g)

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