The solubility of inorganic forms of phosphorus, mainly represented by orthophosphates
, is pH dependent.
It is reported that addition of lime makes it possible to remove 85-90% of the inorganic orthophosphates
present in wastewater.
are of limited use as the main materials for orthopedics and dentistry due to the poor mechanical properties (they are very fragile and hard).
According to the researchers, the system needs more chemicals such as orthophosphates
and chlorine to move through pipelines and plumbing fixtures in order to combat lead contamination and bacteria growth; none of which can happen if the residents are not using the water supply frequently.
Some specific subjects include calcium phosphate-reinforced polyester nanocomposites for bone regeneration applications, biocomposites and hybrid biomaterials of calcium orthophosphates
with polymers, and curcumin-loaded polymeric nanoparticles for treatment of cancer.
The chemical analysis of water determined a high content of suspended substances, nutrients, ammonium ion, total nitrogen, organic matter with low degradability, total organic carbon, orthophosphates
, total phosphorus, arsenic and chromium.
They also discuss the preparation of tissue development, decellularized scaffolds for cardiac tissue engineering and whole-organ regeneration, three-dimensional electrospun nanofiber scaffolds, nanofibrous scaffolds, nanodimensional and nanocrystalline calcium orthophosphates
, and cell behavior and electrospun scaffolds.
Among many kinds of nanostructured materials, lanthanide orthophosphates
(LnP[O.sub.4]) with uniform size and various morphologies have been prepared by some mild and controllable methods [4, 5] and attracted great interest because of their unique properties including very low solubility in water (The solubility product constant, [pK.sub.sol] = 25-27) , high thermal stability, high index of refraction, and high luminescent efficiency [7, 8].
Unconsumed feed also contributes to the increases in N and P in the water, because the decomposition of this feed releases soluble forms of N (e.g., nitrite, nitrate, ammonia, amino acids) and P (e.g., orthophosphates
, phosphoproteins, phospholipids) (Mires, 1995).
Nutrient analyses (Nitrites + Nitrates, Ammonium and Orthophosphates
) were performed by the staff of the Chemical Laboratory of the CECOAL, following APHA techniques (1995).
phosphates can be inorganic form (include orthophosphates
and poly phosphates) or organic form(organically bound phosphates).