MESSAI.iO
Generic MFCRepresentative model
Click to animate flow
loading 3D model…

Representative MFC — matched on the paper’s system type only, not its reactor or geometry.

Extraction

Reported parameters

No values extracted from this paper yet.

Open in lab for full controls, parameter editing, and template overlays.

Open in lab →

What they did

System
MFC

What worked

No outcome metrics extracted yet.

Abstract

In this study, a sediment microbial fuel cell (SMFC) system for the simultaneous biodegradation of organic matter and detoxification of hexavalent chromium Cr (VI) was investigated. The total organic carbon (TOC) removal rate of the SMFC with Cr (VI) was 30.07%, which was significantly higher than that in a SMFC without Cr (VI) (13.74%). In the SMFC with Cr (VI), the maximum values of open-circuit voltage (OCV) and power density were 408 mV and 4.8 mW/m 2 , respectively. During the long-term operation of the SMFC with Cr (VI), 25 mg/L of Cr (VI) were completely reduced from all four consecutive batches over 48 days. MiSeq sequencing revealed that the biofilm microbial community of the anode comprised of Bacteroidetes (42.9%), Proteobacteria (33.6%), Chloroflexi (7.5%), and Euryarchaeota (7.5%) as the predominant phyla. Compared with that of the sediment, certain families were enriched; they included Pseudomonadaceae (46.88-fold), Flavobacteriaceae (5.05-fold), and Syntrophaceae (4.48-fold), which are organic matter-degrading bacteria. These results suggest that SMFCs are useful for TOC removal and detoxification of heavy metals in remediation of contaminated lakes.

Keywords

Microbial fuel cellHexavalent chromiumEnvironmental chemistryOrganic matterTotal organic carbonMicrobial population biology

Identifiers

DOI
10.26789/aeb.2018.01.001
Journal
Applied Environmental Biotechnology
Year
2019