Attachment Behavior of Shewanella Putrefaciens onto Magnetite Under Aerobic and Anaerobic Conditions

Attachment Behavior of Shewanella Putrefaciens onto Magnetite Under Aerobic and Anaerobic Conditions

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  • November 20, 2018
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In this study, batch experiments were used to characterize attachment behavior of Shewanella putrefaciens strain 200R to ferrihydrite and magnetite. Attachment was quantified in batch experiments with a 0.01 M NaNO 3 solution as a function of pH (ranging from 3 to 10), sorbed anion (PO4 3 − ), and growth conditions (aerobic vs. anaerobic). Electrophoretic mobility data was collected for S. putrefaciens cells and magnetite grains and used as a means to interpret the role of electrostatic interaction in attachment studies. Little difference in attachment behavior was observed as a function of growth conditions or surface treatments. The exception was at pH ranging from 2 to 4, under anaerobic conditions, where increased attachment was measured on magnetite surfaces with sorbed PO4 3 …

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