The simultaneous modelling of metal ion and humic substance transport in column experiments.
Pulsed column experiments using Co, fulvic acid and porous sediment packing, along with up/down-flooding experiments using Eu, humic acid and intact sandstone blocks have been performed. The elution of metal and humic and their distribution along the sandstone columns have been measured. A mixed equilibrium and kinetic coupled chemical transport model has been used to simulate the results. In both cases, one exchangeable and one non-exchangeable component have been used to simulate the interaction of metal and humic substance. For the pulsed experiments, a simple equilibrium approach was used to model humic sorption, while a two component, kinetic model was required for the sandstone columns.
Bryan
Nick D
ND
Centre for Radiochemistry Research, Department of Chemistry, University of Manchester, Oxford Road, Manchester, UK M13 9PL.
Barlow
Jenny
J
Warwick
Peter
P
Stephens
Sarah
S
Higgo
Jenny J W
JJ
Griffin
David
D
D000327:Adsorption; D001578:Benzopyrans / Q000737:chemistry*; D003035:Cobalt / Q000737:chemistry*; D005063:Europium / Q000737:chemistry*; D019015:Geologic Sediments; D006812:Humic Substances; D007700:Kinetics; D008956:Models, Chemical; D012822:Silicon Dioxide
D001578:Benzopyrans; D006812:Humic Substances; D003035:Cobalt; D005063:Europium; D012822:Silicon Dioxide; C005023:fulvic acid