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首页> 外文会议>Conference on Green Engineering, null >Separations Research at the U.S. Environmental Protection Agency: Toward Recovery of VOCs and Metals Using Membranes and Adsorption Processes
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Separations Research at the U.S. Environmental Protection Agency: Toward Recovery of VOCs and Metals Using Membranes and Adsorption Processes

机译：美国环境保护署的分离研究：使用膜和吸附工艺回收挥发性有机化合物和金属

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The United States Environmental Protection Agency's National Risk Management Research Laboratory (NRMRL) is investigating new separations materials and processes for removal and recovery of volatile organic compounds (VOCs) and toxic metals from wastesteams and industrial process streams. Research applying membrane-based pervaporation to recovery of VOCs from surfactant-containing solutions has yielded results indicating that existing models for predicting required membrane surface area underestimate VOC flux across the membrane. Other research evaluated the new application of a modified commercial vibratory membrane for pervaporative removal of VOC. A software program is also being developed in NRMRL to predict pervaporation performance of commercial and research membranes for a variety of VOCs and user-selected conditions. In metals recovery research, NRMRL has targeted the metals copper, lead, nickel, and recently, mercury. Development of novel ion exchange and adsorbents for these metals and utilization of newer processes such as electrochemical ion exchange and adsorption are being investigated for some of them. Industrial streams of interest are those from metal finishing and electronics for copper, nickel and lead and from boilers, incinerators, and medical facilities for mercury.
机译：美国环境保护局的国家风险管理研究实验室（NRMRL）正在研究新的分离材料和工艺，以从废水和工业流程中去除和回收挥发性有机化合物（VOC）和有毒金属。将基于膜的全蒸发应用于从含表面活性剂的溶液中回收VOC的研究得出的结果表明，用于预测所需膜表面积的现有模型低估了跨膜的VOC通量。其他研究评估了改进的商用振动膜在挥发性有机化合物的全蒸发中的新应用。 NRMRL中也正在开发一个软件程序，以预测在各种VOC和用户选择的条件下商业和研究膜的渗透性能。在金属回收研究中，NRMRL的目标是金属铜，铅，镍和最近的汞。对其中一些金属的新型离子交换和吸附剂的开发以及电化学离子交换和吸附等较新方法的利用正在研究中。感兴趣的工业流来自铜，镍和铅的金属精加工和电子产品，以及汞的锅炉，焚化炉和医疗设施。

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