The Effects of NaOH Concentration on the Hydrothermal Synthesis of a Hydroxyapatite–Zeolite Composite Using Blast Furnace Slag

Minerals

HammadR. Khalid¹  H.K. Lee²  Zhen Wang²  G.U. Ryu²  Namkon Lee³ 

[1] Civil and Environmental Engineering Department, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia;Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology, Guseong-dong, Yuseong-gu, Daejeon 34141, Korea;Department of Infrastructure Safety Research, Korea Institute of Civil Engineering and Building Technology, Ilsan 10223, Korea;

关键词: hydroxyapatite;    hydrothermal synthesis;    blast furnace slag;    NaOH concentration;    zeolite;   

DOI  :  10.3390/min11010021

来源: DOAJ

【 摘 要 】

This study investigated the effect of NaOH concentration on the assemblage, crystallinity, and dimension of crystalline phases in hydroxyapatite–zeolite composites made with blast furnace slag. X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy measurement, scanning electron microscopy (SEM), and nitrogen adsorption–desorption tests were conducted to characterize the synthesized composites. In addition, the cesium adsorption potential of the synthesized composites was evaluated to assess the feasibility of using hydroxyapatite–zeolite composites synthesized from blast furnace slag. The composite samples using a 3 M NaOH solution showed the formations of Na-P1 and Faujasite (FAU) zeolites along with hydroxyapatite, which led to the highest adsorption capacity for cesium (44.90 mg/g).

【 授权许可】

Unknown