What is it about?
Effectiveness of P precipitation requires a process-based knowledge regarding pH, Mg:PO4 ratio, contact time and their interactions in P recovery and crystal morphology. The study analysis this interaction of factors and highlights those which bring the best combo of recovery + crystal properties. Being that the properties also affect how effective a precipitate is as a fertilizer.
Photo by James Baltz on Unsplash
Why is it important?
Focusing only on mazimizing P recovery not giving relevance to crystal properties may generate a big problem when transitioning to a macroscale operation. Other than that, crystals obtaine dof higher % recovery may present smaller sizes and poor structural properties that lead to bad fertilizers as they will get dissolved easily by rain and will end up accumulate faster in water bodies.
Read the Original
This page is a summary of: Recovery of phosphates as struvite from urine-diverting toilets: optimization of pH, Mg:PO4 ratio and contact time to improve precipitation yield and crystal morphology, Water Science & Technology, November 2019, IWA Publishing, DOI: 10.2166/wst.2019.371.
You can read the full text:
The following have contributed to this page