Bioremoval of Aqueous Lead Using Lemna Minor |
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Authors: | Nicholas A Hurd Steven PK Sternberg |
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Institution: | Department of Chemical Engineering , University of Minnesota Duluth , Duluth, Minnesota, USA |
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Abstract: | The aquatic plant Lemna minor (duckweed) was examined for its ability to sorb soluble lead from water under laboratory conditions. The use of biomass as a sorption medium provides a simple alternative separation technology. Laboratory-scale (700-mL) batch reactors containing soil-based sediments were used to expose L. minor to concentrations of 0.0, 5.0, and 10.0 mg/L of lead for 7 d. Overall removal amounts of 95% were observed, with 85% removal occurring within the first day. A sorption process model was developed based on a mass balance and a power law rate of sorption equation. |
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Keywords: | duckweed bioseparation bioremediation sorbtion modeling |
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