منابع مشابه
Removal of copper (II) from aqueous solutions by sodium alginate/hydroxy apatite hydrogel modified by Zeolite
The study presented in this article investigated the removal of copper ions from aqueous solutions by a synthetic hydrogel-forming adsorbent polymer based on sodium alginate (SA) and hydroxy apatite (HA) nanoparticles. The effect of adding Zeolite on the adsorption performance of this hydrogel was also investigated, and the optimum amount of Zeolite was determined by changing its quantity. The ...
متن کاملRemoval of heavy metals (lead, cadmium, zinc, nickel and iron) from water by bio-ceramic absorbers of hydroxy-apatite microparticles
Heavy metals are highly poisonous in the environment, even in small quantities, and endanger certain species and all live beings. Current methods of removing heavy metals from aqueous media include chemical sequestration, ion exchange, surface absorption, membrane processes, oxidation and revival procedures which have high investment and exploitation costs. Hence, it is significantly necessary ...
متن کاملA computer modelling study of the uptake, structure and distribution of carbonate defects in hydroxy-apatite.
Computer modelling techniques have been employed to qualitatively and quantitatively investigate the uptake and distribution of carbonate groups in the hydroxyapatite lattice. Two substitutional defects are considered: the type-A defect, where the carbonate group is located in the hydroxy channel, and the type-B defect, where the carbonate group is located at the position of a phosphate group. ...
متن کاملeffect of nano hydroxy apatite on artificial carious lesions created on extracted teeth
background. many types of toothpastes contain substances that can remineralize initial enamel caries. this study aimed to assess the effect of nano-hydroxyapatite (nha) on microhardness of artificially created carious lesions. methods. in this in vitro study, nha was prepared using sol-gel technique and added to the toothpaste with 7% concentration. a total of 80 extracted sound teeth were coll...
متن کاملA Study of Aqueous Film Coating on Microcrystalline Hydroxy Apatite Complex Tablets
Water soluble polymers such as Hydroxy Propyl Methyl Cellulose (HPMC), Poly Vinyl Pyrrolidone (PVP), Carboxy Methyl Cellulose Sodium (CMC Na), and Methyl Cellulose as well as in combination of varying proportions are used in this study for the protective coating of Microcrystalline Hydroxy Apatite Complex (MCHC). The objective of this study was to investigate the effect of aqueous film coating ...
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ژورنال
عنوان ژورنال: Journal of Advanced Science
سال: 2000
ISSN: 1881-3917,0915-5651
DOI: 10.2978/jsas.12.34