Experiments investigated the effect of various media constituents (Fe2+, PO4
3-, and NH4
+) on H2
evolution during anaerobic iron corrosion. At pH 7.0 when sulfide was absent, Fe2+ did not have
much influence on H2 release rates, whereas higher PO4
3- and NH4
+ promoted H2 evolution. If
present, soluble sulfide controlled H2 release rates in the solutions with Fe2+ or PO4
3-. However,
if both soluble sulfide and NH4
+ were present at high concentrations, very low rates of H2 release
were observed. A simplistic empirical model was developed to fit data on corrosion rates from
previous research with sulfate-reducing bacteria (SRB). The best fit empirical coefficients were
consistent with trends noted in this work and provided a good fit to previous researchdata,
supporting the idea that water chemistry is more important to previous results obtained in the
presence of SRB than is commonly realized. The practical relevance of previous studies is of
concern given the atypical levels of nutrients in media used. Includes 30 references, tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 360 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 17 |
| Published : | 06/16/2002 |
