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Uranium and lead adsorption onto bentonite and zeolite modified with polyacrylamidoxime
Adsorption Polyacrylonitrile Composite Aluminosilicate Uranium Lead
2011/11/10
Polyacrylonitrile (PAN) and bentonite (B)/zeolite (Z)-PAN composites were prepared by direct polymerization of acrylonitrile (AN) and AN adsorbed onto B and Z. PAN and the composites were subjected to...
Thermoanalytical studies of silver and lead jarosites and their solid solutions
Jarosite Thermal analysis Controlled rate thermal analysis Thermogravimetry
2011/11/11
Dynamic and controlled rate thermal analysis has been used to characterise synthesised jarosites of formula [M(Fe)3(SO4)2(OH)6] where M is Pb, Ag or Pb–Ag mixtures. Thermal decomposition occurs in a s...
Kinetic and isothermal studies of lead ion adsorption onto palygorskite clay
Lead Palygorskite clay Adsorption capacity Kinetic Isotherm
2011/11/7
The use of a natural palygorskite clay for the removal of Pb(II) from aqueous solutions for different contact times, pHs of suspension, and
amounts and particle sizes of palygorskite clay were invest...
XAFS determination of the chemical form of lead in smelter-contaminated soils and mine tailings: Importance of adsorption processes
smelter-contaminated soils mine tailings adsorption processes oxyhydr
2012/3/31
Weinvestigatedsmelter-contaminatedsoilsfromEvin-Malmaison,Nord-Pas-de-Calais,
France,andminetailingsfromLeadville,Colorado,U.S.A.BulkPbconcentrationsrange
from460to1900ppminthetopsoilsatEvin-Malmais...
High temperature in situ structural investigation on lead feldspar
High-temperature increase
2012/3/30
Single-crystalX-raydiffractionwasperformedinsituat T 20,230,465,and700C
Si O , I2/c,a 8.402, b 13.043, c 14.308
onapartiallyorderedleadfeldspar(PbAl2 2 8351??
A, 115.30, V 1417.6A ; Q 0.71).Theunit...
Structural variations induced by thermal treatment in lead feldspar (PbAl2Si2O8)
Structural variations thermal treatment lead feldspar
2012/3/30
Lead feldspar single crystals were annealed at T 5 1050 and 1000 8 C, starting from a disordered metastable configuration (PbFH, Qod5 0) and from an ordered configura-tion (PbFL, Qod5 0.89). Single-cr...
Morphology of Lead(II) and Chromium(III) Reaction Products on Phyllosilicate Surfaces as Determined by Atomic Force Microscopy
Atomic Force Microscopy Clay FTIR Geochemical Equilibrium Model Mica Remediation Smectite X-ray
2011/12/27
Abstract: Redox and acid-base reactions play important roles in the fate of metal contaminants in soils and sediments. The presence of significant amounts of Cr, Pb and other toxic heavy metals in con...
Cation ordering in lead-molybdenum-vanadium oxychlorides
Cation lead-molybdenum-vanadium oxychlorides
2012/4/9
The crystal chemistry and structure ofthe layered lead oxychloride parkinsonite, ideally Pb7Mo09C12, have been reevaluated in the light of TEM observations of natural and syn-thetic samples and the st...
The structure of ordered and disordered lead feldspar (PbAl2Si2O8)
The structure lead feldspar (PbAl2Si2O8)
2012/4/9
The Al-Si configuration in ordered and disordered lead feldspar (PbA12Si20g) has been investigated by single-crystal X-ray diffraction, Single crystals synthesized from meltand cooled from T= 1280to 1...
Lead-210 Derived Sedimentation Rates from a North Louisiana Paper-Mill Effluent Reservoir
Anatase Applied sedimentation Kaolin Lead-210 Paper-mill effluent Pyrite Wetland degradation
2011/12/28
Lower Wham Brake is a cypress, rim-swamp artificially enclosed in 1950 as a 22 km2 industrial reservoir by the International Paper Company (IPC)-Bastrop Mill, for regulating downstream water quality. ...