Distillation is one of the oldest methods of water treatment and is still in use today, though not commonly as a home treatment method. It can effectively remove many contaminants from drinking water, ...

CORRECTION: This story was updated on Dec. 16, 2015, to correct the description of distillation and to clarify the separation difficulty posed by azeotropes. A new method for heating liquid mixtures ...

Listen to the full series on BBC Sounds. Fractional distillation works because the different liquids have different boiling points. When the mixture is heated: vapours rise through a column which is ...

Lubricants and oils are used across many different areas of industry, with the most common use being within industrial machines and automotive engines. Lubrication is one of the fundamental aspects of ...