Compositions and method for bioremediation of halogen contaminated soils
US5766929A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 1997 |
| Grant date | Jun 16, 1998 |
| Priority date | — |
| Expiry date | Apr 18, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB09C1/10
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
The present invention is for bioremediation method and compositions for promoting activity in indigenous micro-organisms, causing the micro-organisms to degrade organic contaminants. The bioremediation compositions are provided by admixing an amount of a sulfate salt to achieve from about 75 to about 250 parts per million in the contaminated soil, with a sufficient amount of an iron derivative to achieve from about 30 to about 100 parts per million in the contaminated soil, a sufficient amount of an electron donor to achieve from about 50 to about 75 parts per million in the contaminated soil, from about 1 to about 5 grams per liter of a yeast extract, from about 1 to about 5 grams per liter of a glacial till, a sufficient amount of a nitrogen compound to equal a concentration ratio of 100 parts of indigenous carbon to from about 5 to about 20 parts by weight of the nitrogen compound in the contaminated soil, a sufficient amount of a phosphorus compound to equal a concentration ratio of 100 parts by weight of indigenous carbon to 1 part by weight of the phosphorus compound within the contaminated soil. The bioremediation compositions may further include a surfactant, a muriate of p…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.