Deliyanni E A, Nalbandian L, Matis K A
Section of Chemical Technology and Industrial Chemistry, School of Chemistry, Aristotle University of Thessaloniki, P.O. Box 116, 54124 Thessaloniki, Greece.
J Colloid Interface Sci. 2006 Oct 15;302(2):458-66. doi: 10.1016/j.jcis.2006.07.007. Epub 2006 Aug 22.
Removal of toxic arsenite ions from aqueous solutions was investigated using an innovative hybrid nanocrystalline surfactant-modified akaganeite. This sorbent was prepared using ferric chloride as the precursor and a cationic surfactant, hexadecyltrimethylammonium bromide. From the experimental work, the material was found to be an effective adsorbent for the separation of arsenites. The chemical kinetics of the process was studied, described by a pseudo-second-order equation. The Freundlich adsorption isotherm was determined to examine the mechanism of sorption. FTIR measurements and XPS analysis gave useful information both on the sorbent synthesized and on the arsenite removal process.
使用一种创新的杂化纳米晶表面活性剂改性的针铁矿研究了从水溶液中去除有毒亚砷酸根离子的方法。这种吸附剂以前氯化铁为前体和阳离子表面活性剂十六烷基三甲基溴化铵制备而成。通过实验工作发现该材料是分离亚砷酸盐的有效吸附剂。研究了该过程的化学动力学，用准二级方程进行描述。测定了弗伦德利希吸附等温线以研究吸附机理。傅里叶变换红外光谱（FTIR）测量和X射线光电子能谱（XPS）分析为合成的吸附剂和亚砷酸盐去除过程提供了有用信息。
