Regeneration of scrubber effluent containing sulfate radicals

Patent · Tue Dec 30 04:00:00 EST 1980

OSTI ID:6571458

Brown, R S

Stack gases from fossil fuel burning operations before being released to the atmosphere are passed through a scrubber, wherein sulfur dioxide is removed from the gases by scrubbing with metallic carbonates. The metallic carbonates react with the sulfur dioxide to form a liquid effluent comprising metallic sulfates. The effluent is placed in a basin and inoculated with a microorganism which reduces sulfate ions to hydrogen sulfide, preferably bacteria from the genus desulfovibrio, thereby also regenerating metallic carbonates. The effluent is contemporaneously or serially inoculated with saline compatible bacteria from the genus beggiatoa whereby the hydrogen sulfide is oxidized to form sulfur. After treatment by the bacteria, the effluent is recycled to the scrubber for use therein and the sulfur is recovered.

• Assignee: IFI; EDB-81-051995
• Patent Number(s): US 4242448
• OSTI ID: 6571458
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200202 -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
42 ENGINEERING
424000* -- Engineering-- Pollution Control Equipment-- (1980-1989)
AIR POLLUTION CONTROL
BACTERIA
CARBON COMPOUNDS
CARBONATES
CHALCOGENIDES
CHEMICAL REACTIONS
DESULFURIZATION
ELEMENTS
EQUIPMENT
FLUE GAS
FOSSIL-FUEL POWER PLANTS
GASEOUS WASTES
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
MICROORGANISMS
NONMETALS
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
POWER PLANTS
REGENERATION
SCRUBBERS
SCRUBBING
SLUDGES
SULFATES
SULFIDES
SULFUR
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
THERMAL POWER PLANTS
WASTES