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A study of the physical-chemical mechanisms and variables which affect the transport of inorganic and organic heterogeneous systems: Annual progress report for 1986-1987

Technical Report ·
OSTI ID:6144902
Goal is to investigate the reaction mechanisms and key nonbiological variables which affect the partitioning of microcontaminants between aqueous solutions and solid phase adsorbents. The primary technique used is cylindrical internal reflection - Fourier transform infrared (CIR-FTIR) spectroscopy, in conjunction with wet chemical adsorption isotherm and electrophoretic mobility measurements. CIR-FTIR study of the adsorption of phenol, benzoic acid and derivatives on goethite indicated that phenol and o-nitrophenol do not adsorb. Two separate adsorption mechanisms were observed for five other organics: (1) bidentate adsorption; (2) chelate adsorption along crystal edges. Phosphate adsorption was also studied using CIR-FTIR, with a bidentate adsorption mechanism also indicated. Another aspect of this investigation is to determine the effect of possible particle aggregation on adsorption. This aspect requires the use of a Matec Instruments System 8010, which is currently being purchased. 4 refs.
Research Organization:
Wisconsin Univ., Madison (USA)
DOE Contract Number:
FG02-87ER60508
OSTI ID:
6144902
Report Number(s):
DOE/ER/60508-1; ON: DE88000139
Country of Publication:
United States
Language:
English