Hydroxyapatite precipitation with Hydron Blue dye.
Calcium phosphate, in the form of amorphous hydroxyapatite, precipitates out of neutral water solutions containing calcium and phosphate ions in the form of small agglomerates of 18 μm average size. When Hydron Blue dye (HB) is added, the insoluble particles gradually agglomerate further to 50 μm sizes. However, the removal capacity of hydroxyapatite for the dye is increased when the calcium phosphate nucleates and forms in the presence of dye. When coprecipitates form, the particules average 20 μm size and contain up to 60% organic matter. Nascent calcium phosphate particles have strong capacity for Hydron Blue dye removal. Thus smaller calcium phosphate particles increase the amount of dye molecules in water pollution control.
Université Mouloud Mammeri Laboratoire LCAGC, Tizi-Ouzou, 15000, Algeria. Electronic address: oubagha.noura@gmail.com.
Noura
N
Oubagha
Université Mouloud Mammeri Laboratoire LCAGC, Tizi-Ouzou, 15000, Algeria; Université Paul Sabatier, Toulouse, 31062, France. Electronic address: w.lemlikchi@gmail.com.
Wahiba
W
Lemlikchi
Université Paul Sabatier, Toulouse, 31062, France. Electronic address: patrick.sharrock@iut-tlse.fr.
Patrick
P
Sharrock
Université Paul Sabatier, Toulouse, 31062, France. Electronic address: marina.fiallo@iut-tlse3.fr.
Marina
M
Fiallo
Université Mouloud Mammeri Laboratoire LCAGC, Tizi-Ouzou, 15000, Algeria. Electronic address: mecherri@gmail.com.
Med Oimar
MO
Mecherri
D002118:Calcium; D011232:Chemical Precipitation; D017886:Durapatite; D020100:Hydrogels; D011102:Polyhydroxyethyl Methacrylate / Q000031:analogs & derivatives*
D020100:Hydrogels; C000257:polyhydroxyethyl methacrylate hydrogels; D011102:Polyhydroxyethyl Methacrylate; D017886:Durapatite; D002118:Calcium
Adsorption; Agglomeration; Coprecipitation; Flocculation; Hydroxyapatite; Particle-size distributions