Kinetics and Mechanisms of Metal Retention/Release in Geochemical Processes in Soil
The effective remediation of DOE superfund sites contaminated by toxic heavy metals has been hampered by the paucity of knowledge about the kinetics and mechanism(s) of heavy metal retention/release by site media particles. Thus remediation strategies have been costly and ineffective. The information acquired in this project should assist in improving remediation strategies for toxic heavy metals contaminated soils. The objectives are: (1) To determine the effects of residence time on the mechanisms of heavy metals [i.e., Cr(IV), Cu(II), Co(II), and Pb(II)] sorption/release on soil clay mineral surfaces using kinetic studies coupled to extended x-ray absorption fine structure (EXAFS) spectroscopy and fourier transform infrared (FTIR) spectroscopy. (2) To study the effect of temperature, pH, and phosphate on metal sorption by clay minerals and derive thermodynamic parameters to describe the sorption process.
- Research Organization:
- Alabama A& M University, Normal, Alabama (US)
- Sponsoring Organization:
- USDOE Office of Environmental Management (EM) (US)
- DOE Contract Number:
- FG07-96ER14718
- OSTI ID:
- 827354
- Report Number(s):
- EMSP-55014-1999; R&D Project: EMSP 55014; TRN: US200425%%614
- Resource Relation:
- Other Information: PBD: 1 Jun 1999
- Country of Publication:
- United States
- Language:
- English
Similar Records
Kinetics and mechanisms of metal retention/release in geochemical processes in soil. 1998 annual progress report
Kinetics and Mechanism of Metal Retention/Release in Geochemical Processes in Soil - Final Report