Seed selections for crystallization of calcium phosphate for phosphorus recovery

  • chair:

    Song, Y. / Donnert, D. / Berg, U. / Weidler, P. / Nueesch, R. (2007)
  • place:

    Journal of Environmental Sciences-China 19 (2007), 5, 591–595
  • Date: 2007

  • Song, Y. / Donnert, D. / Berg, U. / Weidler, P. / Nueesch, R. (2007): „Seed selections for crystallization of calcium phosphate for phosphorus recovery“. In: Journal of Environmental Sciences-China 19 (2007), 5, 591–595

Abstract

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Seed induces and promotes the crystallization of calcium phosphate, and acts as carrier of the recovered phosphorus (P). In order to select suitable seed for P recovery from wastewater, three seeds including Apatite (AP), Juraperle (JP) and phosphate-modified Juraperle (M-JP) were tested and compared. Batch and fixed-bed column experiments of seeded crystallization of calcium phosphate were undertaken by using synthetic wastewater with 10 mgP/L. It showed that AP had bad enduring property in the crystallization process, while JP had better performance for multiple uses, and M-JP was a hopeful seed for P recovery by crystallization of calcium phosphate.