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Chronic effects of a coal liquid on a freshwater alga, Selenastrum capricornutum

Journal Article · · Environ. Sci. Technol.; (United States)
DOI:https://doi.org/10.1021/es00098a011· OSTI ID:5542266
; ; ;
Static toxicity tests (EPA Bottle Test) were conducted to evaluate potential chronic effects of water-soluble fractions (WSFs) of a coal liquid on the freshwater alga, Selenastrum capricornutum. Tests measured population response during and after exposure (5-day exposure, 9-day recovery) to WSFs prepared by sequentially extracting a 2.9:1 blend of solvent-refined coal (SRC-II) middle/heavy distillates with Columbia River water. WSFs from the first and fifth extractions represented a fresh mix and water-leached material, respectively. On the basis of dilution, water-leached material was less toxic than the first extraction. However, on the basis of chemical composition, water-leached material was more toxic than the first extraction, since lower concentrations of total carbon and total phenol inhibited algal recovery. Similar tests with a Prudhoe Bay crude and No. 6 fuel oil showed that these materials were less toxic than the SRC-II liquid, primarily because of lower solubilities of their constituents in water.
Research Organization:
Pacific Northwest Lab., Richland, WA
DOE Contract Number:
AC06-76RL01830
OSTI ID:
5542266
Journal Information:
Environ. Sci. Technol.; (United States), Journal Name: Environ. Sci. Technol.; (United States) Vol. 16:4; ISSN ESTHA
Country of Publication:
United States
Language:
English

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Related Subjects

01 COAL, LIGNITE, AND PEAT
010900* -- Coal
Lignite
& Peat-- Environmental Aspects
560303 -- Chemicals Metabolism & Toxicology-- Plants-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ALGAE
BIOLOGICAL EFFECTS
CHRONIC EXPOSURE
COAL LIQUEFACTION
COAL LIQUIDS
COLUMBIA RIVER
FLUIDS
LIQUEFACTION
LIQUIDS
PLANTS
POPULATION DYNAMICS
RIVERS
SOLUBILITY
SRC-II PROCESS
STREAMS
SURFACE WATERS
THERMOCHEMICAL PROCESSES
TOXICITY