Search Result
Technology Innovation News Survey Feed (RSS)
TREATMENT EFFICIENCY OF IRON-RICH ACID MINE DRAINAGE IN A TRI-UNIT PILOT SYSTEM
Genty, T., B. Bussiere, M. Benzaazoua, C.M. Neculita, and G.J. Zagury.
Environmental Science and Pollution Research 27:8418-8430(2020)
Iron-rich acid mine drainage was treated in a lab-scale tri-unit pilot reactor (2.65 m3) for one year. The first unit consisted of a passive biochemical reactor, filled with a reactive mixture (50% of manure, sawdust, maple chips, compost, urea, sediment, and sand; 50% of calcite) to neutralize acidity and to partially remove metals. The second unit contained wood ash and acted as neutralizer and iron retention filter. The last unit was a second passive biochemical reactor filled with a reactive mixture (98% of manure, sawdust, maple chips, compost, urea, sediment, and sand; 2% of calcite) as a polishing step to remove residual metals. The pH increased from 3 to ~ 6, and redox potential decreased significantly (from 550 mV to 100 mV). Fe decreased from 4 g/L to ~100 mg/L. The performance of the multistep treatment system was controlled by the capacity of the wood ash to immobilize iron
Environmental Science and Pollution Research 27:8418-8430(2020)
Iron-rich acid mine drainage was treated in a lab-scale tri-unit pilot reactor (2.65 m3) for one year. The first unit consisted of a passive biochemical reactor, filled with a reactive mixture (50% of manure, sawdust, maple chips, compost, urea, sediment, and sand; 50% of calcite) to neutralize acidity and to partially remove metals. The second unit contained wood ash and acted as neutralizer and iron retention filter. The last unit was a second passive biochemical reactor filled with a reactive mixture (98% of manure, sawdust, maple chips, compost, urea, sediment, and sand; 2% of calcite) as a polishing step to remove residual metals. The pH increased from 3 to ~ 6, and redox potential decreased significantly (from 550 mV to 100 mV). Fe decreased from 4 g/L to ~100 mg/L. The performance of the multistep treatment system was controlled by the capacity of the wood ash to immobilize iron
The Technology Innovation News Survey welcomes your comments and
suggestions, as well as information about errors for correction. Please
contact Michael Adam of the U.S. EPA Office of Superfund Remediation
and Technology Innovation at adam.michael@epa.gov or (703) 603-9915
with any comments, suggestions, or corrections.
Mention of non-EPA documents, presentations, or papers does not constitute a U.S. EPA endorsement of their contents, only an acknowledgment that they exist and may be relevant to the Technology Innovation News Survey audience.
