Additional Information submitted during the information exchange on ...

This document has not been fully peer reviewed and <strong>the</strong> <strong>information</strong> within is not validated nor endorsed by <strong>the</strong> TWG
on LVIC-S or by <strong>the</strong> European Commission, it is meant for <strong>information</strong>, only
1.4.5 Techniques to consider in <strong>the</strong> determination of BAT
Ferric chloride can be made by a variety of processes. This leads to a wide range of
environmental performances.
The process based on <strong>the</strong> use of spent acid (pickle liquor) and <strong>the</strong> process using iron ore are <strong>the</strong>
most common technologies.
In <strong>the</strong> case of ferric chloride, <strong>the</strong> variety of equipment used is limited as <strong>the</strong> processes are
generally simple. Therefore, within a particular process, <strong>the</strong> type and <strong>the</strong> technology of a
particular item of equipment (i.e a filter) can greatly affect <strong>the</strong> overall performance of <strong>the</strong>
process from an environmental point of view.
1.4.6 Emerging techniques
As filtration is used in almost every process, <strong>the</strong> equipment that minimises emissions to water
can be considered and, if possible, included in a new plant set-up.
The manufacturing of ferric chloride is exo<strong>the</strong>rmic, <strong>the</strong>refore heat recovery options can be
examined and, if possible, included in a new process scheme.
Emissions to air can be controlled via a scrubbing technique.
An area for future research and development would be <strong>the</strong> recycling of <strong>the</strong> hydrogen.
17