Hydroxyapatite and β-tricalcium phosphate as porous composites were prepared by a sol-gel process. We gota solid powder form composites as small particles. Mixed powder by ultrasonically dispersed throughout the aqueous solution containing an optimum amount of Ring-opening-polymerization was used for a poly (d, l-lactide-co-glycolide) acid polymeric gel as an appropriate functional system for solid-phase extraction of metal ions from aqueous medium. The zinc ions adsorption with polylatic-coglycolic)acid (PLGA) as original technique for scaffolds where, the cations adsorption zinc(II) and Co(II) with PLGA-polymer opening ring is considered eco-friendly alternative technology for water treatment. However, the application of PLGA to zinc (II) adsorption is limited, due to its lower surface area and porosity. Then, the prepared a PLGA scaffold with a huge structure was used as an alternative absorbent material to remove zinc ion and cobalt from nitrate solutions. Characterization of structure and analysis of spectral of the most important features of PLGA scaffold and carried out. The PLGA scaffold offered pore sizes from 100-200µm. Porosity up to 95.4% and the specific surface area of PLGA 81±2.4m 2 g-1-(SEM); moreover, the adsorption of isotherm was applied by the models Langmuir and Freundlich, the adsorption of metal ions can explain the effect of composites recycle on the adsorption of two models, fitting of zinc and cobalt ions adsorption of correlation coefficient the Langmuir model is the best than Freundlich model.