caa a22 4500 475812832 CHVBK 20180406123801.0 cr unu---uuuuu 170329e20000301xx s 000 0 eng 10.1007/BF02687262 doi (NATIONALLICENCE)springer-10.1007/BF02687262 Drury William Environmental Engineering Department, Montana Tech, 1300 W. Park St., 59701-8997, Butte, MT aut Modeling of sulfate reduction in anaerobic solid substrate bioreactors for mine drainage treatment [Elektronische Daten] [William Drury] A mathematical model is presented for the rate of sulfate reduction in anaerobic solid substrate bioreactors and subsurface flow wetlands used to treat water containing heavy metals. In these systems, sulfate is reduced to sulfide through bacterial sulfate reduction (BSR). The sulfide precipitates metals with low metal sulfide solubility products, and BSR produces alkalinity. It is assumed that neither the bioreactors nor the wetlands receive significant replenishment of electron donor (organic carbon), and that they operate solely on the organic carbon included in the substrate during system construction. The model predicts sulfate reduction as a function of the initial age of the organic matter, hydraulic retention time, and temperature. The hydraulic retention time must be long if system reconstruction, supplying more organic carbon, is to be done infrequently. It takes about seven years for a substrate with a high initial age (2 years) to achieve a larger sulfate reduction rate than a substrate with a low initial age (0.5 years). The required hydraulic retention time for 50 percent sulfate reduction varies from 8 d at 17°C to 41 d at 1° C. Springer-Verlag, 1997 acid mine drainage treatment nationallicence passive treatment nationallicence constructed wetlands nationallicence treatment wetlands nationallicence sulfate reduction nationallicence Mine Water and the Environment Springer-Verlag 19/1(2000-03-01), 19-29 1025-9112 19:1<19 2000 19 10230 https://doi.org/10.1007/BF02687262 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02687262 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Drury William Environmental Engineering Department, Montana Tech, 1300 W. Park St., 59701-8997, Butte, MT aut NATIONALLICENCE 773 0- Mine Water and the Environment Springer-Verlag 19/1(2000-03-01), 19-29 1025-9112 19:1<19 2000 19 10230 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer