FUNDAMENTAL STUDIES OF THE REMOVAL OF CONTAMINANTS FROM GROUND AND WASTE WATERS VIA REDUCTION BY ZERO-VALENT METALS

Yarmoff, Jory A. ; Amrhein, Christopher

University of California, Riverside, Riverside, CA (United States)

关键词: Removal;    Waste Water;    Uranium;    Electron Sources;    37 Inorganic, Organic, Physical And Analytical Chemistry;   

DOI  :  10.2172/827370
RP-ID  :  EMSP-55061--20000
RP-ID  :  FG07-96ER14707
RP-ID  :  827370

美国|英语

来源: UNT Digital Library

【 摘 要 】

Oxyanions of uranium, selenium, chromium, arsenic, technetium, and chlorine (as perchlorate) are frequently found as contaminants on many DOE sites. A potential remediation method is to react the contaminated water with zero-valent iron (ZVI). In this reaction, the iron serves as both an electron source and as a catalyst. Elemental iron is already being used on an experimental basis at many sites. Both in situ reactive barriers and above-ground reactors are being developed and field tested at this time. However, the design and operation of these treatment systems requires a detailed process-level understanding of the interactions between the contaminants and the iron surfaces. We are performing fundamental investigations of the interactions of the relevant compounds with Fe filings and single- and poly-crystalline surfaces. The aim of this work is to develop the fundamental physical and chemical understanding that is necessary for the development of cleanup techniques and procedures.