Hydrothermal synthesis of nanocrystalline hydroxyapatite from phosphogypsum waste

被引:67
作者
Bensalah, Hiba [1 ,2 ]
Bekheet, Maged F. [2 ]
Younssi, Saad Alami [1 ]
Ouammou, Mohamed [1 ]
Gurlo, Aleksander [2 ]
机构
[1] Univ Hassan II Casablanca, Fac Sci & Tech Mohammedia, Dept Chem, Lab Membranes Mat & Environm, BP 146, Casablanca 20650, Morocco
[2] Tech Univ Berlin, Inst Werkstoffwissensch & Technol, Fachgebiet Keram Werkstoffe, Hardenbergstr 40, D-10623 Berlin, Germany
来源
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING | 2018年 / 6卷 / 01期
关键词
Phosphogypsum; Hydroxyapatite; Nanorods; Hydrothermal; Surfactant; HETEROGENEOUS CATALYST; AQUEOUS-SOLUTIONS; ADSORPTION; ADSORBENT; NANOPARTICLES; TEMPERATURE; REMOVAL; ENAMEL; IMPACT; WATER;
D O I
10.1016/j.jece.2018.01.052
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Hydroxyapatite (HAp) nanorods are synthesized from phosphogypsum waste (PG) and potassium dihydrogen phosphate (KH2PO4) under hydrothermal conditions. The influence of several synthesis parameters such as temperature (100-200 degrees C), synthesis time (1-15 h), and solution pH (5-11) on product structure and purity is addressed by X-ray diffraction and Fourier Transformed-Infrared Spectroscopy. Phase-pure HAp nanorods with diameter and length of 18 and 63 nm, respectively, are obtained after 10 h at 200 degrees C and pH similar to 11. The influence of Brij-93 surfactant on the morphology of prepared HAp is investigated by transmission and scanning electron microscopy. The aspect ratio and the mean size of HAp crystals increase to 1013 and 205 x 20 nm, respectively, with increasing the concentration of Brij-93 surfactant to 0.01 mol. Hence, the PG recycling could be accomplished using an easy synthesis route with relatively cheap reactants for the production of nanocrytalline HAp.
引用
收藏
页码:1347 / 1352
页数:6
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