| 摘要 |
<p>PCT No. PCT/GB95/00285 Sec. 371 Date Oct. 3, 1996 Sec. 102(e) Date Oct. 3, 1996 PCT Filed Feb. 13, 1995 PCT Pub. No. WO95/22374 PCT Pub. Date Aug. 24, 1995A process for the decontamination of a medium comprising a particulate material contaminated with one or more metal species, the process comprising the steps of treating a body of the said medium with microbially produced sulfuric acid so as to solubilize the metal species as a metal sulfate; treating the leached metal sulfate by a bioprecipitation process which converts the said sulfate to an insoluble sulfide; separating hydrogen sulfide produced during the bioprecipitation from the insoluble metal sulfide; and oxidizing the separated hydrogen sulfide to form a reusable source of a sulfur-containing ingredient.</p> |
