Hassan Saad S M, Awwad Nasser S, Aboterika Awaad H A
Department of Chemistry, Faculty of Science, Ain Shams University, Cairo, Egypt.
J Hazard Mater. 2008 Jun 15;154(1-3):992-7. doi: 10.1016/j.jhazmat.2007.11.003. Epub 2007 Nov 9.
Camel bone charcoal is used as an adsorbent for the removal of Hg(II) from wastewater effluents. The equilibrium data are fitted to Langmiur isotherm rather than linear and Freundlich isotherms. The adsorption capacity Qo is 28.24 mg of Hg(II)/g of the adsorbent. The optimum removal conditions are pH 2, contact time 30 min and temperature 25 degrees C. A comparison of the adsorption capacity (Qo) of camel bone charcoal with different adsorbents previously used for Hg(II) removal from wastewater effluents reveals its remarkable efficiency over many other treated and untreated natural and synthetic adsorbents. X-ray fluorescence and infrared spectrometry of camel bone charcoal after contact with mercury solutions confirm surface adsorption of Hg(II) ions. Electron microscopy reveals the formation of a spongy like structure on the adsorbent surface due to Hg(II) adsorption. Quantitative removal of mercury from hazardous effluents is demonstrated.
骆驼骨炭被用作从废水排放物中去除汞（II）的吸附剂。平衡数据符合朗缪尔等温线，而非线性等温线和弗罗因德利希等温线。吸附容量Qo为28.24毫克汞（II）/克吸附剂。最佳去除条件为pH值2、接触时间30分钟和温度25摄氏度。将骆驼骨炭与先前用于从废水排放物中去除汞（II）的不同吸附剂的吸附容量（Qo）进行比较，结果显示其相对于许多其他经过处理和未处理的天然及合成吸附剂具有显著的效率。与汞溶液接触后的骆驼骨炭的X射线荧光光谱和红外光谱证实了汞（II）离子的表面吸附。电子显微镜显示由于汞（II）吸附，吸附剂表面形成了海绵状结构。证明了从危险废水中定量去除汞的效果。
