The Application of Sediment Microbial Fuel Cells in Aquacultural Sediment Remediation

To successfully apply sediment microbial fuel cells (SMFCs) in remediating aquacultural sediments and water bodies on a large scale, SMFC systems with different electrode materials (carbon fiber brush, graphite felt, and carbon fiber cloth) and structural forms were constructed, and the advantages a...

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Bibliographic Details
Published in:Water (Basel) 2022-09, Vol.14 (17), p.2668
Main Authors: Qi, Jiarui, Sun, Zhuteng, Zhang, Jinfeng, Ye, Chen
Format: Article
Language:English
Subjects:
Algal blooms
Aquaculture
Biochemical fuel cells
Carbon fibers
Chemical oxygen demand
Cloth
Electricity
Electricity generation
Electrode materials
Electrodes
Electron transfer
Eutrophication
Experiments
Fuel cells
Fuel technology
Graphite
Hydrocarbons
Microorganisms
Organic matter
Organic phosphorus
PCB
Phosphorus
Pollutant removal
Pollutants
Polychlorinated biphenyls
Salinity
Sediments
Soil remediation
Structural forms
Titanium
Water pollution
Wire
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Summary:To successfully apply sediment microbial fuel cells (SMFCs) in remediating aquacultural sediments and water bodies on a large scale, SMFC systems with different electrode materials (carbon fiber brush, graphite felt, and carbon fiber cloth) and structural forms were constructed, and the advantages and disadvantages of various electrodes were compared in terms of electricity generation, pollutant removal, and application cost. The results revealed that (1) introducing SMFCs accelerated the removal of pollutants from the overlying water, promoted the degradation of organic matter and the fixation of phosphorus in the sediments, and inhibited water eutrophication and algal blooms; (2) SMFC systems with carbon fiber brushes and graphite felt electrodes exhibited better electricity generation, but the smooth surface of the carbon fiber cloth was not conducive to microbial attachment, leading to a relatively low electrode power density; and (3) the low external resistance accelerated electron transfer and increased the pollutant removal rate.
ISSN:2073-4441
2073-4441
DOI:10.3390/w14172668