Process related effects on the chemical and toxicologic characteristics of coal derived fuels. [Changes over 25 day run]
As a component of an ongoing program to assess the potential health effects of coal conversion materials, the authors have recently completed chemical and toxicologic studies of a sample set collected on selected days of a 25-day demonstration run of a catalytic two stage direct coal liquefaction (CTSL) process. There was an increase in heteroatomic, nitrogen containing polycyclic aromatic compounds (NPAC) and hydroxy-substituted PAC, compounds as the operation time of the pilot plant increased. The proportion of material which boiled above 975/sup 0/F also increased in the solids-free portion of the recycle slurry oil as pilot plant operation time increased. As anticipated from the increase in NPAC concentration during the run, the microbial mutagenic activity of selected process materials also increased as a function of run time. Likewise, the tumorigenicity of the materials produced later in the demonstration run was higher than that of those produced initially. These results support the view that catalyst deactivation during the course of the run gives rise not only to lower coal conversion, but also to increased toxicologic activity.
- Research Organization:
- Chemical Tech. Dept., Pacific Northwest Lab., P.O. Box 999, Richmond, WA
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 5602905
- Report Number(s):
- CONF-860425-
- Journal Information:
- Am. Chem. Soc., Div. Gas Fuel Chem., Prepr.; (United States), Vol. 31:2; Conference: 191. American Chemical Society national meeting, New York, NY, USA, 13 Apr 1986
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
CATALYSIS
COAL LIQUEFACTION
CATALYSTS
HEALTH HAZARDS
COAL LIQUIDS
TOXICITY
TSL PROCESS
DEMONSTRATION PROGRAMS
AROMATICS
BOILING POINTS
DEACTIVATION
HETEROCYCLIC COMPOUNDS
HIGH TEMPERATURE
MUTAGENESIS
ORGANIC NITROGEN COMPOUNDS
PILOT PLANTS
POLYCYCLIC AROMATIC HYDROCARBONS
FLUIDS
FUNCTIONAL MODELS
HAZARDS
HYDROCARBONS
LIQUEFACTION
LIQUIDS
ORGANIC COMPOUNDS
PHYSICAL PROPERTIES
THERMOCHEMICAL PROCESSES
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
016000* - Coal
Lignite
& Peat- Health & Safety
010405 - Coal
Lignite
& Peat- Hydrogenation & Liquefaction
560306 - Chemicals Metabolism & Toxicology- Man- (-1987)