Record Display for the EPA National Library Catalog

RECORD NUMBER: 395 OF 1338

OLS Field Name OLS Field Data
Main Title Extraction of Mercury from Groundwater Using Immobilized Algae.
Author Barkley, N. P. ;
CORP Author Environmental Protection Agency, Cincinnati, OH. Risk Reduction Engineering Lab.
Publisher c1991
Year Published 1991
Report Number EPA/600/J-91/279;
Stock Number PB92-121367
Additional Subjects Water pollution control ; Mercury(Metal) ; Biological treatment ; Algae ; Absorption(Biology) ; Ground water ; Heavy metals ; Ion exchanging ; Comparison ; Biomass ; Waste disposal ; On-site investigations ; Technology utilization ; Field tests ; Performance evaluation ; Superfund ; Remedial action ; Reprints ; AlgaSORB
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB92-121367 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 02/24/1992
Collation 9p
Abstract
Bio-recovery Systems Inc., conducted a project under the Emerging Technology portion of the United States Environmental Protection Agency's (EPAs) Superfund Innovative Technology Evaluation (SITE) Program to evaluate the ability of immobilized algae to absorb mercury from contaminated groundwater in laboratory studies and pilot-scale field tests. Algae biomass was incorporated in a permeable polymeric matrix. The product, AlgaSORB, packed into absorption columns, exhibited excellent flow characteristics, and functioned as a 'biological' ion exchange resin. A sequence of eleven laboratory tests demonstrated the ability of the product to absorb mercury from groundwater that contained high levels of total dissolved solids and hard water components. However, use of a single AlgaSORB preparation yielded non-repeatable results with samples collected at different times of the year. The strategy of extracting the groundwater through two columns containing different times of the year. The strategy of extracting the groundwater through two columns containing different preparations of AlgaSORB was developed and proved successful in laboratory and pilot-scale field tests. Field test results indicate that AlgaSORB could be economically competitive with ion exchange resins for removal of mercury, with the advantage that hardness and other dissolved solids do not appear to compete with heavy metals for binding capacity. (Copyright (c) 1991--Air and Waste Management Association.)