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METHOD FOR TREATING SOIL AND GROUNDWATER CONTAINING HEAVY METALS INCLUDING NICKEL
A method of reducing the mobility of metal contaminates in mediums such as soil, groundwater, sludge, etc. that involves contacting the mediums with a reagent that is a ferrous sulfide suspension that contains at least FeS and Al(OH)3. The reagent is produced by reacting a solution that contains at least NaAlO2 and NaOH with a solution that contains FeCl2, HCI and water to form a reaction mixture that contains Fe2+, Cr, Na+, Al(OH)3 and H2O; and adding NaHS to the reaction mixture. The mobility of the metal contaminates is reduce by adsorption of the metal contaminates in the medium onto the surface of ferrous sulfide or Al(OH)3 in the ferrous sulfide suspension; adsorption of the metal contaminates in the medium onto iron (hydr)-oxides formed in the suspension; and precipitation of the metal contaminates.
METHOD FOR TREATING SOIL AND GROUNDWATER CONTAINING HEAVY METALS INCLUDING NICKEL
A method of reducing the mobility of metal contaminates in mediums such as soil, groundwater, sludge, etc. that involves contacting the mediums with a reagent that is a ferrous sulfide suspension that contains at least FeS and Al(OH)3. The reagent is produced by reacting a solution that contains at least NaAlO2 and NaOH with a solution that contains FeCl2, HCI and water to form a reaction mixture that contains Fe2+, Cr, Na+, Al(OH)3 and H2O; and adding NaHS to the reaction mixture. The mobility of the metal contaminates is reduce by adsorption of the metal contaminates in the medium onto the surface of ferrous sulfide or Al(OH)3 in the ferrous sulfide suspension; adsorption of the metal contaminates in the medium onto iron (hydr)-oxides formed in the suspension; and precipitation of the metal contaminates.
METHOD FOR TREATING SOIL AND GROUNDWATER CONTAINING HEAVY METALS INCLUDING NICKEL
METHODE DE TRAITEMENT DES SOLS ET DES EAUX SOUTERRAINES RENFERMANT DES METAUX LOURDS, Y COMPRIS DU NICKEL
MEYER GARY J (author) / MCCULLOUGH THOMAS P (author) / KRIECH ANTHONY J (author) / ROPER RALPH E JR (author)
2016-04-17
Patent
Electronic Resource
English
IPC:
B01J
Chemische oder physikalische Verfahren, z.B. Katalyse oder Kolloidchemie
,
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
/
B09C
Wiedergewinnung von verseuchtem Boden
,
RECLAMATION OF CONTAMINATED SOIL
/
C02F
Behandlung von Wasser, Schmutzwasser, Abwasser oder von Abwasserschlamm
,
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
/
C22B
PRODUCTION OR REFINING OF METALS
,
Gewinnen oder Feinen von Metallen
/
E02D
FOUNDATIONS
,
Gründungen
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