| 摘要 |
<p>PCT No. PCT/GB95/00287 Sec. 371 Date Oct. 3, 1996 Sec. 102(e) Date Oct. 3, 1996 PCT Filed Feb. 13, 1995 PCT Pub. No. WO95/22375 PCT Pub. Date Aug. 24, 1995A process for the decontamination of a medium including a particulate material contaminated with one or more organic species and one or more metal species, the process including the steps of: (1) treating said medium by breaking down the organic species by or through the action of microbial agents, (2) treating the medium with microbially produced sulfuric acid so as to solubilize and leach the metal species as a metal sulfate, (3) treating the leached metal sulfate by a bioprecipitation process which converts the said sulfate into one or more insoluble metal sulfides and hydrogen sulfide, (4) separating the hydrogen sulfide from the one or more insoluble metal sulfides and (5) oxidizing the separated hydrogen sulfide to form a reusable source of a sulfur-containing ingredient.</p> |
