Mitigation of acute toxicity of coal-derived liquids by hydrotreatment. [Tetrahymena]

Journal Article · Sun Jan 01 04:00:00 EST 1984 · J. Environ. Sci. Health, Part A; (United States)

DOI:https://doi.org/10.1080/10934528409375167· OSTI ID:5930688

Schultz, T W; Dumont, J N

Acute toxicity of 12 coal-derived liquids representing 3 different technologies and 4 different severities of hydrotreatment has been examined with the Tetrahymena population growth bioassay. Tetrahymena were exposed to various concentrations of the organic materials and growth impairment was monitored. In addition, analyses of the major organic elements in the coal liquids are presented. Coal-derived liquids have a greater heteroatom and aromatic content than do natural crude oils. Hydrotreatment, the catalytic addition of hydrogen, concomitantly reduces toxicity as well as heteroatom content and aromaticity. Regression analysis of log toxicity vs. % weight of the major organic elements suggests hydrogen content may be a good indicator of relative toxicity of coal-derived liquids.

• Research Organization: Univ. of Tennessee, Knoxville
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 5930688
• Journal Information: J. Environ. Sci. Health, Part A; (United States), Journal Name: J. Environ. Sci. Health, Part A; (United States) Vol. A19:4; ISSN JESED
• Country of Publication: United States
• Language: English

Related Subjects

560302* -- Chemicals Metabolism & Toxicology-- Microorganisms-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMALS
BIOASSAY
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
CILIATA
COAL LIQUIDS
DATA
FLUIDS
GROWTH
HYDROGENATION
INFORMATION
INVERTEBRATES
LIQUIDS
MATHEMATICS
MICROORGANISMS
NUMERICAL DATA
PROTOZOA
REGRESSION ANALYSIS
RESPONSE MODIFYING FACTORS
STATISTICAL DATA
STATISTICS
TETRAHYMENA
TOXICITY