Method for mobilization of hazardous metal ions in soils

Title: Method for mobilization of hazardous metal ions in soils

Full Record
Similar

A microbial process is revealed for removing heavy metals such as bismuth, cadmium, lead, thorium, uranium and other transuranics from soils and sediments. The method utilizes indigenous, or isolates of indigenous, microorganisms and reducing agents, such as cysteine or sodium thioglycollate, or complexing agents such as the amino acid glycine, to effect the mobilization or release of the metals from the soil particles. 5 figs.

Inventors:: Dugan, P.R.; Pfister, R.M.

Issue Date:: 1995-06-27

OSTI Identifier:: 87722

Assignee:: Lockheed Idaho Technologies Co., Idaho Falls, ID (United States) PTO; SCA: 540220; 540230; PA: EDB-95:119930; SN: 95001431113

Patent Number(s):: US 5,427,247/A/

Application Number:: PAN: 8-067,195

Contract Number:: AC07-76ID01570

Resource Relation:: Other Information: PBD: 27 Jun 1995

Research Org:: EG & G Idaho Inc

Country of Publication:: United States

Language:: English

Subject:: 54 ENVIRONMENTAL SCIENCES; SOILS; REMEDIAL ACTION; SEDIMENTS; BISMUTH; BIODEGRADATION; CADMIUM; LEAD; THORIUM; URANIUM; IN-SITU PROCESSING; REAGENTS; TECHNOLOGY ASSESSMENT

Full Text
Patents / Patent Applications
Search for the full text at the U.S. Patent and Trademark Office

Similar records in DOepatents and OSTI.GOV collections:

Method for mobilization of hazardous metal ions in soils

Patent Dugan, Patrick R. ; Pfister, Robert M.

A microbial process for removing heavy metals such as bismuth, cadmium, lead, thorium, uranium and other transuranics from soils and sediments, utilizing indigenous, or isolates of indigenous, microorganisms and reducing agents, such as cysteine or sodium thioglycollate, or complexing agents such as the amino acid glycine, to effect the mobilization or release of the metals from the soil particles.
Full Text Available January 1995
Method for intercalating alkali metal ions into carbon electrodes

Patent Doeff, M.M. ; Ma, Y. ; Visco, S.J. ; DeJonghe, L.

A low cost, relatively flexible, carbon electrode for use in a secondary battery is described. A method is provided for producing same, including intercalating alkali metal salts such as sodium and lithium into carbon.
August 1995
Adsorbent for metal ions and method of making and using

Patent White, L.R. ; Lundquist, S.H.

A method comprises the step of spray-drying a solution or slurry comprising (alkali metal or ammonium) (metal) hexacyanoferrate particles in a liquid, to provide monodisperse, substantially spherical particles in a yield of at least 70 percent of theoretical yield and having a particle size in the range of 1 to 500 micrometers, said particles being active towards Cs ions. The particles, which can be of a single salt or a combination of salts, can be used free flowing, in columns or beds, or entrapped in a nonwoven, fibrous web or matrix or a cast porous membrane, to selectively remove Csmore » ions from aqueous solutions. 2 figs.« less
August 1999
Method for removing flammable hazardous liquid waste from soils

Patent - in OSTI.gov collection Mendenhall, R.L.

A method of reducing the amount of hazardous flammable hydrocarbons present in a soil at a concentration of above about 100 parts per million is described comprising: introducing the hydrocarbon containing soil into a rotatable drum having a first open port at a first end and a second closed port at a second end thereof, vaporizing the flammable hydrocarbons present in the soil by introducing flame and hot gases of combustion into the first port and heating the soil to a temperature of above about 300/sup 0/F while rotating the drum, successively directing the soil through first and second sectionsmore »« less
June 1988
Method for encapsulating and isolating hazardous cations, medium for encapsulating and isolating hazardous cations

Patent Application - in OSTI.gov collection Wasserman, S.R. ; Anderson, K.B. ; Song, K. ; Yuchs, S.E. ; Marshall, C.L.

The problems associated with the disposal of toxic metals in an environmentally acceptable manner continues to plague industry. Such metals as nickel, vanadium, molybdenum, cobalt, iron, and antimony present physiological and ecological challenges that are best addressed through minimization of exposure and dispersion. A method for encapsulating hazardous cations is provided comprising supplying a pretreated substrate containing the cations; contacting the substrate with an organo-silane compound to form a coating on the substrate; and allowing the coating to cure. A medium for containing hazardous cations is also provided, comprising a substrate having ion-exchange capacity and a silane-containing coating on themore » substrate.« less
Full Text Available December 1996