Denitrification and removal of heavy metals from waste water by immobilized microorganisms |
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| Authors: | R P Tengerdy J E Johnson J Holló J Tóth |
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| Institution: | (1) Department of Microbiology, Colorado State University, 80523 Fort Collins, Colorado;(2) Department of Radiation Biology, Colorado State University, 80523 Fort Collins, Colorado;(3) Institute of Agricultural Chemical Technology, Technical University of Budapest, Budapest, Hungary |
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| Abstract: | Pseudomonas fluorescens, immobilized on soft polyvinyl chloride granules containing up to 35% softeners as carbon source, was used for simultaneous
removal of nitrate and heavy metals. In typical continuous column operation, a 100 mg/L nitrate input solution was reduced
to a 20 mg/L output at a feeding rate of 1500 mL/h, with a capacity of 14 kg/day/m3, and with an efficiency of 79%. In the same column, Pb(NO3)2 concentration was reduced from 1.0 to 0.05−0.1 mg/L and ZnSO4 concentration was reduced from 10 to 5 mg/L.Pseudomonas aeruginosa immobilized on an O2 plasma-treated melt blown polypropylene web was used for removing 95% of a 1.7 nCi PuCl4 activity from a nuclear plant waste water in a batch operation. |
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| Keywords: | Pseudomonas fluorescens in waste water denitrification Pseudomonas fluorescens in heavy metal removal from waste water immobilized bacteria in waste water treatment bacteria immobilized in waste water treatment denitrification of waste water by immobilized microbes metals removal from waste water by microbes microbes immobilized in waste water denitrification microbes immobilized in heavy metal removal from waste water plutonium removal from waste water by immobilized microbes |
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