some of the vivianite samples we got from the wastewater treatment process weren’t cleanable or usable for the experiment because they were already too far oxidised. Stephen created some in the lab so we could carry on with the experiments and the hackathon in a timely fashion..
vivianite preparation in the lab, thanks to Stephen Picken en Suellen Espindola.
photos courtesy Stephen & Suellen
A Cure for Concrete 