Development and validation of a multi-site model for adsorption of metals by mixtures of minerals: 1, Overview and preliminary results
- Sandia National Labs., Albuquerque, NM (United States)
- Science Applications International Corp., McLean, VA (United States)
- Howard Univ., Washington, DC (United States)
- New Mexico Univ., Albuquerque, NM (United States)
The possibility of formulating and validating a multi-site, multi- solute model for prediction of contaminant transport in groundwaters is being evaluated through experiments with simple analog systems. These systems consist of mixtures of well-characterized synthetic and natural materials in which the effects of sorption by ion exchange and amphoteric sites are isolated. Initial results are reported for studies of lead sorption by mixtures of goethite and montmorillonite, and Ni-Sr and Pb-Sr ion exchange by montmorillonite. The results of studies of simple clay-oxide mixtures indicate that the pH-dependent sorption behavior of Ni by mixtures of minerals containing amphoteric sites can be predicted from the properties of the component minerals.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC04-76DP00789; AC05-84OR21400; AC05-76OR00033; AC06-76RL01830
- OSTI ID:
- 10129840
- Report Number(s):
- SAND-92-0532C; CONF-920761-3; ON: DE92009057
- Resource Relation:
- Conference: 7. water-rock interaction conference,Park City, UT (United States),9-23 Jul 1992; Other Information: PBD: [1992]
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
ENVIRONMENTAL TRANSPORT
MATHEMATICAL MODELS
METALS
GOETHITE
SORPTIVE PROPERTIES
MONTMORILLONITE
POLLUTANTS
GROUND WATER
ADSORPTION
MINERALS
ION EXCHANGE
LEAD
NICKEL
STRONTIUM
540220
990200
CHEMICALS MONITORING AND TRANSPORT
MATHEMATICS AND COMPUTERS