Electrokinetic removal of charged contaminant species from soil and other media using moderately conductive adsorptive materials
US6221237A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 24, 1999 |
| Grant date | Apr 24, 2001 |
| Priority date | — |
| Expiry date | Jun 24, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB09C1/085
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Method for collecting and concentrating charged species, specifically, contaminant species in a medium, preferably soil. The method utilizes electrokinesis to drive contaminant species into and through a bed adjacent to a drive electrode. The bed comprises a moderately electrically conductive adsorbent material which is porous and is infused with water or other solvent capable of conducting electrical current. The bed material, preferably activated carbon, is easily removed and disposed of. Preferably, where activated carbon is used, after contaminant species are collected and concentrated, the mixture of activated carbon and contaminant species is removed and burned to form a stable and easily disposable waste product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.