Phosphate removal and recovery through crystallization of hydroxyapatite using XONOTLITE (cas 12141-77-4) as seed crystal
-
Add time:08/03/2019 Source:sciencedirect.com
XONOTLITE (cas 12141-77-4) was synthesized and tested for phosphate removal and recovery from synthetic solution in a batch mode. The effects of pH, initial calcium concentration, bicarbonate concentration on phosphate removal through crystallization were examined. The morphology and X-ray diffraction (XRD) pattern of xonotlite before and after crystallization confirmed the formation of crystalline hydroxyapatite. The results indicated that the crystallization product had a very high P content (> 10%), which is comparable to phosphate rock at the dosage of 50-200 mg xonotlite per liter, with a maximum P content of 16.7%. The kinetics of phosphate removal followed the second-order reaction equation. The phosphate removal ability increased with increasing pH. The precipitation of calcium phosphate took place when pH was higher than 7.2, whereas the crystallization occurred at pH 6.0. A high calcium concentration could promote the removal of phosphate via crystallization, while a high bicarbonate concentration also enhanced phosphate removal, through that the pH was increased and thus induced the precipitation process. When xonotlite was used to remove phosphate from wastewater, the removal efficiency could reach 91.3% after 24 h reaction, with removal capacity 137 mg/g. The results indicated that xonotlite might be used as an effective crystal seed for the removal and recovery of phosphate from aqueous solution.
We also recommend Trading Suppliers and Manufacturers of XONOTLITE (cas 12141-77-4). Pls Click Website Link as below: cas 12141-77-4 suppliers
Prev:Structure, morphology and mechanism research on synthesizing XONOTLITE (cas 12141-77-4) fiber from acid-extracting residues of coal fly ash and carbide slag
Next:Inverse relation between the catalytic activity and catalyst concentration for the ruthenium(0) nanoparticles supported on XONOTLITE (cas 12141-77-4) nanowire in hydrogen generation from the hydrolysis of sodium borohydride) - 【Back】【Close 】【Print】【Add to favorite 】
- Related Information
- Thermal conductivity measurements on XONOTLITE (cas 12141-77-4)-type calcium silicate by the transient hot-strip method08/08/2019
- Removal of organic polyelectrolytes and their metal complexes by adsorption onto XONOTLITE (cas 12141-77-4)08/07/2019
- Mechanisms of Nd(III) uptake by 11 Å tobermorite and XONOTLITE (cas 12141-77-4)08/06/2019
- Structure of the hydrogen bonds and silica defects in the tetrahedral double chain of XONOTLITE (cas 12141-77-4)08/05/2019
- Inverse relation between the catalytic activity and catalyst concentration for the ruthenium(0) nanoparticles supported on XONOTLITE (cas 12141-77-4) nanowire in hydrogen generation from the hydrolysis of sodium borohydride08/04/2019
- Structure, morphology and mechanism research on synthesizing XONOTLITE (cas 12141-77-4) fiber from acid-extracting residues of coal fly ash and carbide slag08/02/2019
- Effect of Ultrasonic Process on Carbide Slag Activity and Synthesized XONOTLITE (cas 12141-77-4)08/01/2019
- Hydrothermal synthesis of XONOTLITE (cas 12141-77-4) from carbide slag07/31/2019
- Fabrication and characterization of form-stable phase change material/XONOTLITE (cas 12141-77-4) microcomposites07/30/2019