The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 01, 2009
Filed:
Feb. 28, 2007
In situ immobilization of metals in contaminated sites using stabilized iron phosphate nanoparticles
Dongye Zhao, Auburn, AL (US);
Zhong Xiong, Auburn, AL (US);
Mark Barnett, Auburn, AL (US);
Ruiqiang Liu, Auburn, AL (US);
Willie F. Harper, Auburn, AL (US);
Feng He, Auburn, AL (US);
Dongye Zhao, Auburn, AL (US);
Zhong Xiong, Auburn, AL (US);
Mark Barnett, Auburn, AL (US);
Ruiqiang Liu, Auburn, AL (US);
Willie F. Harper, Auburn, AL (US);
Feng He, Auburn, AL (US);
Auburn University, Auburn, AL (US);
Abstract
A method for preparing a class of highly stabilized and soil-dispersible nanoparticles and using the nanoparticles as a remediation technology for immobilizing toxic metals at toxic metal contaminated sites. The method employs a composition containing select polysaccharides (starch or cellulose) as a stabilizer for the nanoparticles in a liquid carrier, and results in suspensions of nanoparticles of desired size and mobility in water, soils or sediments. The stabilizer can facilitate controlling the dispersibility of the nanoparticles in the liquid carrier. An effective amount of the composition is delivered to a contaminated site so that the nanoparticles can immobilize one or more toxic metals of the contaminated site.