公开(公告)号：US06379556B1

公开(公告)日：2002-04-30

申请号：US09394325

申请日：1999-09-13

申请人： Ed Venkat ,  Ralph J. Magliette ,  Donald McKinney ,  Alan S. Michaels

发明人： Ed Venkat ,  Ralph J. Magliette ,  Donald McKinney ,  Alan S. Michaels

IPC分类号： C02F142

CPC分类号： C02F1/42 ,  B01J41/05 ,  B01J49/57 ,  B01J41/07

摘要： The recovery of iodide from chemical process wastewater is accomplished by loading the wastewater containing iodide onto a strongly basic anion-exchange resin in free-base form; eluting the sorbed iodide from the resin with aqueous strong acid (e.g., hydrochloric acid); loading the iodide-rich cuts onto a weakly basic anion-exchange resin in free-base form; and eluting the sorbed iodide with aqueous base (e.g., sodium hydroxide). The recovered iodide typically has sufficient purity to permit its re-use in the chemical process.

摘要翻译： 从化学处理废水中回收碘化物是通过将含有碘化物的废水以游离碱形式加载到强碱性阴离子交换树脂上来实现的; 用强酸水溶液（如盐酸）从树脂中洗脱吸附的碘化物; 将富含碘化物的切片以游离碱形式加载到弱碱性阴离子交换树脂上; 并用碱水溶液（例如氢氧化钠）洗脱吸附的碘化物。 回收的碘化物通常具有足够的纯度以允许其在化学过程中重复使用。