Trace elements in oil shale. Progress report, 1979-1980

Technical Report · Tue Jan 01 04:00:00 EST 1980

DOI:https://doi.org/10.2172/5558504· OSTI ID:5558504

Chappell, W R

The purpose of this research program is to understand the potential impact of an oil shale industry on environmental levels of trace contaminants in the region. The program involves a comprehensive study of the sources, release mechanisms, transport, fate, and effects of toxic trace chemicals, principally the trace elements, in an oil shale industry. The overall objective of the program is to evaluate the environmental and health consequences of the release of toxic trace elements by shale and oil production and use. The baseline geochemical survey shows that stable trace elements maps can be constructed for numerous elements and that the trends observed are related to geologic and climatic factors. Shale retorted by above-ground processes tends to be very homogeneous (both in space and in time) in trace element content. Leachate studies show that significant amounts of B, F, and Mo are released from retorted shales and while B and Mo are rapidly flushed out, F is not. On the other hand, As, Se, and most other trace elements are not present in significant quantities. Significant amounts of F and B are also found in leachates of raw shales. Very large concentrations of reduced sulfur species are found in leachates of processed shale. Very high levels of B and Mo are taken up in some plants growing on processed shale with and without soil cover. There is a tendency for some trace elements to associate with specific organic fractions, indicating that organic chelation or complexation may play an important role. Many of the so-called standard methods for analyzing trace elements in oil shale-related materials are inadequate. A sampling manual is being written for the environmental scientist and practicing engineer. A new combination of methods is developed for separating the minerals in oil shale into different density fractions. Microbial investigations have tentatively identified the existence of thiobacilli in oil shale materials such as leachates. (DC)

• Research Organization: Colorado Univ., Denver (USA)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-79EV10298
• OSTI ID: 5558504
• Report Number(s): DOE/EV/10298-1
• Country of Publication: United States
• Language: English

Related Subjects

04 OIL SHALES AND TAR SANDS
040700 -- Oil Shales & Tar Sands-- Health & Safety
041000* -- Oil Shales & Tar Sands-- Environmental Aspects
ARSENIC
BACILLUS
BACTERIA
BITUMINOUS MATERIALS
BORON
CARBONACEOUS MATERIALS
CHEMICAL COMPOSITION
COLORADO
DATA
DATA FORMS
ELEMENTS
ENERGY SOURCES
ENVIRONMENTAL IMPACTS
ENVIRONMENTAL TRANSPORT
EXPERIMENTAL DATA
FLUORINE
FOSSIL FUELS
FUELS
GEOCHEMICAL SURVEYS
GRAPHS
HALOGENS
INDUSTRY
INFORMATION
LEACHATES
MAPS
MASS TRANSFER
METALS
MICROORGANISMS
MOLYBDENUM
NONMETALS
NORTH AMERICA
NUMERICAL DATA
OIL SHALE INDUSTRY
OIL SHALES
PLANTS
REFRACTORY METALS
RESEARCH PROGRAMS
RETORTING
ROCKY MOUNTAIN REGION
SELENIUM
SEMIMETALS
SULFUR COMPOUNDS
SURVEYS
TABLES
THIOBACILLUS FERROXIDANS
TRACE AMOUNTS
TRANSITION ELEMENTS
UPTAKE
USA