Removal of heavy metal ions from solution by chemically modified peat: effects of pH, ionic strength and flow rate

Journal Article · Sun Jan 01 04:00:00 EST 1984 · Solvent Extr. Ion Exch.; (United States)

OSTI ID:5769370

Ansted, J P; MacCarthy, P

Sulfuric acid treated peat possesses a significant cation exchange capacity and can be used as a practical cation exchanger in the column mode. The influences of pH, ionic strength and flow rate on the efficiency of heavy metal ion removal are investigated in the present paper. All solutions consisted of a mixture of eight metal ions: Mn/sup 2/, Co/sup 2 +/, Ni/sup 2 +/, Cu/sup 2 +/, Zn/sup 2 +/, Cd/sup 2 +/, Pb/sup 2 +/ and UO/sub 2//sup 2 +/. The chemically modified peat displayed a high efficiency for simultaneously removing all of these metal ions from solution even when the number of equivalents of exchanger was only in moderate excess over the total number of equivalents of metal ion passed through the column. The columns containing the bound metals could be regenerated by elution with 3N HCl. 23 references, 3 tables.

• Research Organization: Colorado School of Mines, Golden
• OSTI ID: 5769370
• Journal Information: Solvent Extr. Ion Exch.; (United States), Journal Name: Solvent Extr. Ion Exch.; (United States) Vol. 2:7-8; ISSN SEIED
• Country of Publication: United States
• Language: English

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ABSORPTION SPECTROSCOPY
ACTINIDES
CADMIUM
CATIONS
CHARGED PARTICLES
COBALT
COPPER
DATA
ELEMENTS
ENERGY SOURCES
EXPERIMENTAL DATA
EXTRACTION APPARATUSES
EXTRACTION COLUMNS
FOSSIL FUELS
FUELS
HYDROGEN COMPOUNDS
INDUSTRIAL WASTES
INFORMATION
INORGANIC ACIDS
ION EXCHANGE
IONS
LEAD
LIQUID WASTES
MANGANESE
METALS
NICKEL
NUMERICAL DATA
ORGANIC MATTER
OXYGEN COMPOUNDS
PEAT
PH VALUE
SEPARATION EQUIPMENT
SPECTROSCOPY
SULFURIC ACID
TRANSITION ELEMENTS
URANIUM
WASTE WATER
WASTES
WATER
ZINC