Interactions between manganese oxides and multiple-ringed aromatic compounds
- Pacific Northwest Lab., Richland, WA (United States)
- Utah State Univ., Logan, UT (United States). Dept. of Civil and Environmental Engineering
Objective is to determine whether Mn reductive dissolution can oxidize multiple-ringed aromatics, such as PAHs, in an oxic environment? Research indicated that certain PAHs (eg, dihydrodiols and diones that form free-radical intermediates) are susceptible to oxidation and polymerization. Over 14 days, 83, 76, 54, 70, and 20% of the Mn was reduced by 2,3-, 1,3-, and 1,4-naphthalenediol, quinizarin, and 1,4-naphthoquinone, respectively. 100, 100, and 65% of the first three PAHs were oxidized, respectively. Aromatics with diol functional groups were more easily oxidized than those with only dione groups. Relatively insoluble compounds like quinizarin can be oxidized; insoluble ``humic-like`` material precipitated, indicating a polymerization-humification process. Results suggest that electron transfer/organic release from the oxide surface is the rate-limiting step.
- Research Organization:
- Pacific Northwest Lab., Richland, WA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States); Geological Survey, Reston, VA (United States)
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 10185177
- Report Number(s):
- PNL-SA-21261; CONF-9208152-1; ON: DE92041342; CNN: Grant 14-08-0001-G1723
- Resource Relation:
- Conference: ISSS working group meeting,Edmonton (Canada),10-16 Aug 1992; Other Information: PBD: Aug 1992
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
POLYCYCLIC AROMATIC HYDROCARBONS
OXIDATION
MANGANESE OXIDES
REDUCTION
DISSOLUTION
WASTE PROCESSING
CHEMICAL REACTION KINETICS
PH VALUE
POLYMERIZATION
ELECTRON TRANSFER
PRECIPITATION
400201
320305
CHEMICAL AND PHYSICOCHEMICAL PROPERTIES
INDUSTRIAL WASTE MANAGEMENT