Sunday, July 26, 2009
P57
Remediation of water contaminated with lead by action of Pseudomonas aeruginosa and citrate as complexing agent
Ligia Valle, Jorge Astiazarán, and Diego Hernandez. Facultad de Quimica, Universidad Autonoma de Queretaro, cerro de las campanas, Queretaro, Mexico
Activity of Pseudomonas aeruginosa to remove lead from aqueous solution under different conditions was studied. There were three factors: time, citrate concentration and initial lead concentration. Samples were monitored, by duplicate, by atomic spectroscopy (graphite furnace) once every 12h. Information was analized using a general linear model in which time, initial lead concentration and citrate concentration were set as factors and lead concentration at each time was set as response. From this analysis was concluded that incubation time and initial lead concentration were significant factors to the response but citrate concentration had no significant effect in the range of concentrations studied.
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