Document Detail


Influence of graphite flake addition to sediment on electrogenesis in a sediment-type fuel cell.
MedLine Citation:
PMID:  22336743     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Graphite flakes at levels of 5%, 15%, 20% and 40% (weight per sediment volume) were added to lake bed sediment and electrogenesis in a sediment-type fuel cell was evaluated. Addition of graphite flakes by 20% to the sediment showed higher electrogenic activity of the fuel cell (578mV; 0.37mW) compared to control (304mV; 0.26mW). Further increment in the graphite loading showed a negative influence on the fuel cell behavior. A higher energy and capacitance were recorded with 20% addition of graphite flakes compared to the control. Increase in the exchange current density and decrease in the Tafel slope and electron transfer coefficient was observed with addition of graphite flakes. Apparent surface coverage analysis also supported the higher performance upon addition of 20% graphite flakes. The relative increase in the conductivity of bed due to addition of graphite flakes might be the reason for observed electrogenic activity. Marginal variation in the substrate utilization ( [Formula: see text] 50-55%) was observed with the addition of graphite flakes. By adding an optimum level of graphite flakes to sediment influences the fuel cell performance.
Authors:
M Lenin Babu; S Venkata Mohan
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-1-25
Journal Detail:
Title:  Bioresource technology     Volume:  -     ISSN:  1873-2976     ISO Abbreviation:  -     Publication Date:  2012 Jan 
Date Detail:
Created Date:  2012-2-16     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9889523     Medline TA:  Bioresour Technol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Elsevier Ltd. All rights reserved.
Affiliation:
Bioengineering and Environmental Centre (BEEC), CSIR-Indian Institute of Chemical Technology (IICT), Hyderabad 500 607, India.
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