Affiliation:
1. University of Southern Denmark Department of Green Technology Campusvej 55 DK-5230 Odense M Denmark
2. Aalborg University Department of Chemistry and Bioscience Fredrik Bajers Vej 7H 9220 Aalborg Denmark
3. University of Southern Denmark Department of Biology Campusvej 55 DK-5230 Odense M Denmark
Abstract
AbstractPhosphorus (P) recovery by crystallization of vivianite in digester supernatant (DS) was investigated. A high recovery yield (> 90 %) was obtained with vivianite even for DS with low P concentration (74 mg L−1), as opposed to the formation of struvite and hydroxyapatite where the yield was lower than 50–60 %. Various strategies were tested to produce vivianite with large sizes and narrow size distribution, such as a controlled reagent dosing profile, self‐seeded crystallization, and multistage cascade‐seeded crystallization. The obtained results demonstrated that the main challenge in the development of vivianite P recovery is to promote crystal growth and to suppress secondary nucleation of vivianite during the crystallization process.
Funder
Horizon 2020 Framework Programme
Subject
Industrial and Manufacturing Engineering,General Chemical Engineering,General Chemistry
Reference32 articles.
1. The story of phosphorus: Global food security and food for thought
2. Towards global phosphorus security: A systems framework for phosphorus recovery and reuse options
3. COM/2012/0673 final Communication from the Commission to the European Parliament the Council the European Economic and Social Committee and the Committee of the Regions A Blueprint to Safeguard Europe's Water Resources Europen Commission Brussels2011.www.eea.europa.eu.
4. U. S.Geological Survey Mineral Commodity Summaries 2019 U.S. Geological Survey Reston2019.
5. The European phosphorus balance