Oil spill sorbent
US11542420B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 22, 2021 |
| Grant date | Jan 3, 2023 |
| Priority date | — |
| Expiry date | Jul 16, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2220/4825
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of treating wood chips to be used as a media for ameliorating oil spills on land or water involves heating in a mixture of petroleum wax and vegetable oil to remove moisture content and open the pores of the wood chip to allow the oil/wax blend to penetrate into the interior of the wood chips and subsequently grinding up the chips to a predetermined mesh size. The ground chips impregnated with wax/oil are then blended with magnetic iron ore concentrate and packaged/bagged for later distribution on an oil slick. The magnetic iron ore concentrate clings to the ground, oil/wax coated wood chips and facilitates retrieving the ground chips that have absorbed the spilled oil using a magnetic pick-up.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.