Electrochemical treatment of acid mine waters.
By: [Prepared] for the Environmental Protection Agency.
Contributors: United States. Environmental Protection Agency. Water Quality Office.
Series: Water pollution control research series
Publisher: U.S. Environmental Protection Agency]; for sale by the Supt. of Docs., U.S. Govt. Print. Off.
Published: 1972
Place of publication: [Washington
Language: eng
Number of pages: 81
Subjects: Acid mine drainage.; Electrolytic oxidation.
Description: Synthetic acid mine drainage (AMD) water was prepared by draining tap water through waste coal, and the resulting AMD was treated on a laboratory scale by an electrolytic oxidation process. Tests of fluidized bed, packed-bed, and annular flow prototype reactors demonstrated the packed-bed reactor to be most efficient. Oxidation of Fe² to Fe³⁺ takes place on a carbon electrode at a mass transport limited rate, while hydrogen evolution occurs on a polished 316 stainless steel cathode, limited by a slower electrochemical kinetic step. Preliminary economic analyses, using a packed-bed reactor are given. The electrolytic process is free from both the safety hazards associated with radio isotope-induced oxidation and the temperature dependence of biological oxidation methods.
Notes: Bibliography: p. 79-80.
"Report submitted in fulfillment of Project number 14010FNQ and Contract number 14-12-859 under the sponsorship of the Water Quality Office, Environmental Protection Agency."
"14010 FNQ 02/72."