Polyurethane and alginate immobilized algal biomass for the removal of aqueous toxic metals
We describe the development of immobilized, processed algal biomass for use as an adsorptive filter in the removal of toxic metals from waste water. To fabricate an adsorptive filter from precessed biomass several crucial criteria must be met, including: (1) high metal binding capacity, (2) long term stability (both mechanical and chemical), (3) selectivity for metals of concern (with regard to ionic competition), (4) acceptable flow capacity (to handle large volumes in short time frames), (5) stripping/regeneration (to recycle the adsorptive filter and concentrate the toxic metals to manageable volumes). This report documents experiments with processed algal biomass (Spirulina platensis and Spirulina maxima) immobilized in either alginate gel or preformed polyurethane foam. The adsorptive characteristics of these filters were assessed with regard to the criteria listed above.
- Research Organization:
- Lawrence Berkeley Lab., CA (United States)
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 6886981
- Report Number(s):
- LBL-33253; CONF-930482--3; ON: DE93007665
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
54 ENVIRONMENTAL SCIENCES
540320* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
ADSORPTION
ALGAE
BIODEGRADATION
BIOMASS
CHEMICAL REACTIONS
CHROMATOGRAPHY
DECOMPOSITION
ELEMENTS
ENERGY SOURCES
FILTERS
HAZARDOUS MATERIALS
HYDROGEN COMPOUNDS
LIQUID WASTES
MATERIALS
MERCURY
METALS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXYGEN COMPOUNDS
PETROCHEMICALS
PETROLEUM PRODUCTS
PH VALUE
PLANTS
PLASTICS
POLYAMIDES
POLYMERS
POLYURETHANES
REMEDIAL ACTION
RENEWABLE ENERGY SOURCES
SEPARATION PROCESSES
SORPTION
STABILITY
SYNTHETIC MATERIALS
WASTE WATER
WASTES
WATER