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Evaluation of hydroxyapatite crystallization in a batch reactor for the valorization of alkaline phosphate concentrates from wastewater treatment plants using calcium chloride

Autor
Hermassi, M.; Valderrama, C.; Dosta, J.; Cortina, J.; Batis, N.
Tipus d'activitat
Article en revista
Revista
Chemical engineering journal
Data de publicació
2015-05-01
Volum
267
Pàgina inicial
142
Pàgina final
152
DOI
https://doi.org/10.1016/j.cej.2014.12.079 Obrir en finestra nova
Projecte finançador
Integración de procesos de membranas, intercambio iónico y precipitación química en la valorización de concentrados de tratamientos
Repositori
http://hdl.handle.net/2117/76790 Obrir en finestra nova
URL
http://www.sciencedirect.com/science/article/pii/S1385894714017021 Obrir en finestra nova
Resum
In this work, phosphorous recovery as hydroxyapatite (Ca5(PO4)3OH(s) = Hap) from alkaline phosphate concentrates (0.25–1 g P–PO43-/L) using calcium chloride (6 g/L) in a batch reactor was evaluated. Ca(II) solutions was continuously fed (0.1–0.3 mL/min) up to reaching a Ca/P ratio of ~1.67 (5/3) to promote Hap formation. Hap powders were characterized by structural form (using X-ray diffraction (XRD), laser light scattering (LS) and Fourier transform infrared spectroscopy (FTIR)); textural...
Citació
Hermassi, M., Valderrama, C., Dosta, J., Cortina, J., Batis, N. Evaluation of hydroxyapatite crystallization in a batch reactor for the valorization of alkaline phosphate concentrates from wastewater treatment plants using calcium chloride. "Chemical engineering journal", 01 Maig 2015, p. 142-152.
Paraules clau
Batch reactor, CHEMISTRY, CRYSTALS, CaCl2, Crystallization, EXCHANGE-RESIN, GROWTH, Hap precipitation, KINETICS, MORPHOLOGY, P(V) recovery, PH, PHOSPHORUS, PRECIPITATION, REMOVAL, Solid characterization
Grup de recerca
CRnE - Centre de Recerca en Ciència i Enginyeria Multiescala de Barcelona
R2EM - Resource Recovery and Environmental Management

Participants