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Characterization of a new electrochemically active bacterium, Lysinibacillus sphaericus D-8, isolated with a WO3 nanocluster probe

Paper ID Volume ID Publish Year Pages File Format Full-Text
34796 45048 2014 5 PDF Available
Title
Characterization of a new electrochemically active bacterium, Lysinibacillus sphaericus D-8, isolated with a WO3 nanocluster probe
Abstract

•A new EAB was identified using a WO3 nanocluster probe.•The strain was designated as Lysinibacillus sphaericus D-8 based on 16S rDNA sequencing.•Electrochemical activity was characterized with a two-chamber MFC and EIS.•CV analysis suggested an indirect extracellular electron transfer taken by this strain.

Microorganisms capable of extracellular electron transfer play important roles in biogeochemical redox processes and have been of great interest in the fields of energy recovery, waste treatment, and environmental remediation. In this study, a new electrochemically active bacterium was identified with a high-throughput method using WO3 nanoclusters as probes. The 16S rRNA gene sequence designated the strain as Lysinibacillus sphaericus D-8, a Gram-positive bacterium. Its electrochemical activity was characterized in a two-chamber microbial fuel cell and a three-electrode electrochemical cell. Strain D-8 produced 92 mW/m2 of power using lactate as the electron donor. The electrochemical impedance spectroscopy results confirmed the electrochemical activity of this strain. Cyclic voltammetry analysis indicated that the presence of soluble redox active compounds might play an important role in the extracellular electron transfer by L. sphaericus D-8. This work might be the first report that demonstrates the electrochemical activity of Lysinibacillus species.

Keywords
Electrochemically active bacteria; Electricity production; Identification; Lysinibacillus sphaericus D-8; WO3 nanoclusters
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Characterization of a new electrochemically active bacterium, Lysinibacillus sphaericus D-8, isolated with a WO3 nanocluster probe
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 49, Issue 2, February 2014, Pages 290–294
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us