Delgadillo-Velasco Lorena, Hernández-Montoya Virginia, Cervantes Francisco J, Montes-Morán Miguel A, Lira-Berlanga Diana
Instituto Tecnológico de Aguascalientes, Av. Adolfo López Mateos No. 1801 Ote., C.P. 20256, Aguascalientes, Ags., Mexico.
Instituto Tecnológico de Aguascalientes, Av. Adolfo López Mateos No. 1801 Ote., C.P. 20256, Aguascalientes, Ags., Mexico.
J Environ Manage. 2017 Oct 1;201:277-285. doi: 10.1016/j.jenvman.2017.06.038. Epub 2017 Jul 1.
In the present work, it was established a new method for the preparation of bone chars with a double purpose, i.e., the removal of fluoride from water and the antibacterial character. These adsorbents were obtained by doping a commercial bone char with Ag using different reagents. The optimal conditions for the enrichment with silver were established by following the Taguchi method and using as response variable the removal of fluoride from water. Optimal bone chars were thus prepared and they were characterized using FT-IR spectroscopy, SEM/EDX analysis, adsorption isotherms of N at -196 °C and X-ray diffraction. All adsorbents were used in the removal of fluoride from water and the antibacterial character was assessed using the technique of total viable count employing standard solutions of Escherichia coli and drinking water. Results clearly indicated that doping of bone chars with silver provides with suitable antibacterial properties, however the fluoride adsorption capacity was not affected by the presence of Ag° on the carbon surface.
在本研究中，建立了一种制备具有双重目的骨炭的新方法，即去除水中的氟化物和抗菌特性。这些吸附剂是通过使用不同试剂用银掺杂商业骨炭而获得的。采用田口方法并将水中氟化物的去除作为响应变量，确定了银富集的最佳条件。由此制备了最佳骨炭，并使用傅里叶变换红外光谱（FT-IR）、扫描电子显微镜/能谱分析（SEM/EDX）、-196°C下氮气吸附等温线和X射线衍射对其进行了表征。所有吸附剂都用于去除水中的氟化物，并使用大肠杆菌标准溶液和饮用水的总活菌数技术评估其抗菌特性。结果清楚地表明，用银掺杂骨炭具有合适的抗菌性能，然而，碳表面Ag°的存在并不影响氟化物的吸附能力。
