Coal fly ash disposal in the ocean: an alternative worth considering
Conference
·
OSTI ID:5967100
Chemical and biological experiments measured the solubility of 16 elements in coal fly ash and the short-term toxicity of coal fly ash to clams and phytoplankton. Of the elements studied, 10 to 60% of the As, Br, Cr, Sb, Se, Ni, Pb, and Sr dissolved within a 24-hour period. Elements which were less than 10% soluble in 24-hours included Cu, Zn, Na, La, Sc, Fe, Co and Eu. Littleneck clams (Protothaca staminea) were exposed to coal fly ash in flowing seawater for a 25-day period. At the end of the exposure Cu concentration in gills was 15 ..mu..g g/sup -1/ dry wt compared to 6 ..mu..g g/sup -1/ in control clams. Elements that were not elevated in the exposed clams were Mn, Fe, Ni, Zn, Se and As. The effects of the soluble fraction of coal fly ash on primary production was measured by /sup 14/C uptake rate on coastal phytoplankton. The addition of soluble coal fly ash material had no effect on the /sup 14/C uptake rate of phytoplankton. These measurements were made in the productive Washington shelf water during August. The literature indicates coal fly ash has a relatively low toxicity to plants and animals. Disposal methods could be designed so EPA water quality criteria levels would not be exceeded except in the immediate vicinity of the dumpsite.
- Research Organization:
- Battelle-Northwest, Sequim, WA (USA). Marine Research Lab.
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 5967100
- Report Number(s):
- PNL-SA-9657; CONF-8110104-3; ON: DE82003835
- Country of Publication:
- United States
- Language:
- English
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·
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AEROSOL WASTES
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BIOLOGICAL EFFECTS
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EVEN-EVEN NUCLEI
FEASIBILITY STUDIES
FLY ASH
HYDROGEN COMPOUNDS
INVERTEBRATES
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MARINE DISPOSAL
MOLLUSCS
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OXYGEN COMPOUNDS
PHYTOPLANKTON
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RESIDUES
SEAWATER
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