Because dosing of magnesium ions is usually required as an input for phosphate
recovery by struvite production, it is important to question whether this poses
issues of possible scarcity of magnesium as a raw material. WssTP and ESPP
have collated information and consulted concerned parties and conclude that the
magnesium ions used for struvite production are not subject to scarcity, although
there may be other cost or LCA issues.
It is also noted that magnesium is a necessary nutrient for plants, so that
magnesium ions used in struvite production are not “lost” but are integrated into
the struvite fertiliser product, where they can have an agronomic value if used appropriately.