Olayiwola A.O. , Farombi A. G. , Amuda O.S.
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Journal : International journal of Horticulture, Agriculture and Food science(IJHAF)
The application of biogenic wastes for the production of hydroxyapatite for the adsorption of Contaminants from wastewater has become attractive in recent time. Hydroxyapatite was produced from periwinkle shell in this study. The periwinkle shell waswashed,sun-dried for 48 h and later soaked in 50% hydrogen peroxide for 24 h to oxidize all organic matters present. The periwinkleshellwas ground and dried in an oven at 105°C;thereafter, it was calcined at 400°C for 2 h and ground to granules before soaked with Di-ammonium hydrogen phosphate solution for 24 h. The calcinedhydroxyapatite (PSHAP) was oven-dried at 105 °C for 24 h and sieved to 2 mm mesh sizes.The Fourier Transform Infrared (FTIR) analysis of the hydroxyapatitewas characterized by broad band at 3437 cm-1, representing bonded -OH groups. The band observed at about 2913–2847 cm-1 was assigned to the aliphatic C - H group. The peak around 1786 cm-1 corresponds to the C=O stretch. The peaks observed at 1682,1548 and 1513 cm-1 correspond to (NH) the secondary amine group.Similarly, the Scanning Electron Microscopy (SEM) analysis shows that the average pore size on the hydroxyapatite(PSHAP) is 50 µm. This Indicates that the hydroxyapatite(PSHAP)produced from periwinkle shell is a potential adsorbent for the adsorption of pollutants found in wastewater.