Instead it can be captured for long term disposal.

Meanwhile the usual tonnes of solid waste left over from steel-making will
be a thing of the past.

For the resulting slag will be used to make cement.

Growing our own fuel

One day even coal will not be needed for the process.

Instead scientists will get the carbon they need in the form of renewable biomass - living carbon in the form of crops and waste product from trees.

This green-friendly way of making steel has been dreamt of by scientists for many years.

But it has only become a reality in recent years thanks to the hard work, dedication and ingenuity of Chemical Engineers.

Their intimate knowledge of fluid dynamics and the complex chemistry
involved in such a process has led directly to this dramatic breakthrough.