Lazaridis N K, Matis K A, Webb M
Department of Chemistry, Aristotle University, Thessaloniki, Greece.
Chemosphere. 2001 Feb;42(4):373-8. doi: 10.1016/s0045-6535(00)00143-0.
Synthetic hydrotalcite-like layered materials are known for their ability to remove anions, like the chromates. These sorbents usually exist in powder form, thereby exhibiting high surface area and rapid kinetics for adsorption, but presenting appreciable problems in the subsequent solid/liquid separation process. Almost complete removals were obtained in this paper, from batchwork dispersed-air flotation in presence of a flocculant. Due to the experienced difficulty of flotation of thermally activated (at 500 degrees C) hydrotalcite metal-loaded particles, the application of various surfactants was studied. Continuous-flow laboratory runs certified also the effectiveness of this combined process of sorptive flotation, a promising innovative treatment technology.
合成类水滑石层状材料以其去除阴离子（如铬酸盐）的能力而闻名。这些吸附剂通常以粉末形式存在，因此具有高表面积和快速的吸附动力学，但在随后的固/液分离过程中存在明显问题。本文通过在絮凝剂存在下进行分批分散空气浮选，实现了几乎完全去除。由于热活化（500摄氏度）负载金属的水滑石颗粒浮选存在困难，因此研究了各种表面活性剂的应用。连续流实验室运行也证明了这种吸附浮选联合工艺的有效性，这是一种很有前景的创新处理技术。
