Production of Hydroxylapatite from Biowaste, Chicken Manure by Hydrothermal Process

Abstract

Hydrothermal process has been applied for effective production of Hydrogen from biowastes. In this study hydrothermal process for production of valuable Hydroxylapatitefrom chicken manure containing phosphorus was focused on. Conditions of 400˚C and 26-27 MPa with addition of 1 mmol Ca(OH) 2 were determined as the optimal by using Ophospho-DL-serine as a model compound. Afterwards, the real biowaste containing phosphorous, chicken manure was processed under the same conditions. Formation of a Hydroxylapatite; in the solid residue was confirmed from X-ray diffraction (XRD) patterns, after purification. It was found that 27.9% of P in the chicken manure was converted to Hydroxylapatite. With the use of acetic acid as a chemical purification medium, Hydroxylapatite was obtained.

Carbonized-leaf Membrane with Anisotropic Surfaces for Sodium-ion Battery

“…Because of the existence of inorganic elements in the natural leaves, there are some inorganic particles formed on the surface of the carbonized leaf (Figure S1−S3). X-ray diffraction (XRD) patterns (Figure S4) indicate that these particles are mainly Ca(OH) 2 , 55 which may result from the hydrolysis of CaO when the carbonized leaf is exposed to the moisture in air. These inorganic particles are easily removed by immersing the carbonized leaf in 3 M HCl for 6 h. As shown in Figure 2d, the clean back surface exhibits a large number of grinning- mouth-like open macropores (stomata).…”

Antibacterial and cytotoxic efficacy of Nano- Hydroxyapatite Synthesized from Eggshell and Sheep bones bio Waste

“…Also hydroxyapatite has high biocompatibility. Chemical formula of HAp with ratio of molar Ca/P 1.67, is Ca 10 (PO 4 ) 6 (OH) 2 [26][27][28]. Biocompatible, pores, osteoconductive and bioactive are among the characteristics of hydroxyapatite [29][30][31][32].…”