关于使用液体离子交换程序从水处理厂污泥中回收铝的三部分系列文章的最后一篇介绍了回收前铝净化的具体程序。进行批量试验，以绘制适当的萃取和汽提平衡曲线。该研究确定，可溶性铝的回收率超过95%是可行的。包括1个参考、表格、图表。

A specific procedure for the purification of aluminum prior to recycling is presented in the final article of a three-part series concerning the use of liquid ion exchange procedures for aluminum recovery from water treatment plant sludges. Batch tests were conducted to develop appropriate extraction and stripping equilibrium curves. The study determined that more than 95 percent recovery of soluble aluminum is feasible. Includes 1 reference, tables, figures.