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一、引言从高放废液中提取镅和希土元素,美国和西德分别研究了HDEHP和HDEHP-TBP萃取流程。这些流程的进料酸度都要求pH～2。因此需要脱硝以降低酸度,并要过滤以除去放射性沉淀物。P_(538)是一种以含14碳为主的磷酸单烷酯[(RO)P(O)(OH)_2],它具有水溶性小、化学
I. INTRODUCTION 镅 and rare earth elements were extracted from high-level liquid waste. The United States and West Germany studied the extraction processes of HDEHP and HDEHP-TBP, respectively. The feed acidity of these processes requires pH ~ 2. Denitration is therefore required to reduce the acidity and to be filtered to remove radioactive precipitates. P_ (538) is a 14 carbon-based monoalkyl phosphate [(RO) P (O) (OH) _2], which has a small water-soluble, chemical