Abstract：
:p-Fluoronitrobenzene (p-FNB) is a toxic compound and tends to accumulate in the environment. p-FNB can be effectively removed and defluorinated in a single-chamber bioelectrochemical system (BES). To verify the suppositionally integrated reductive and oxidative metabolism mechanism in the BES, an oxygen-limited environment was used, with pure oxygen and nitrogen environments used as two controls. Under the oxygen-limited condition, the most excellent performance was achieved. The defluorination rate and mineralization efficiency were 0.0132h(-1) and 72.99±5.68% after 96h, with 75.4% of fluorine in the form of the fluoride ion. This resulted from the unique environment that allowed conventionally integrated reductive and oxidative catabolism. Moreover, the oxidation-reduction potential (ORP) had a significant effect on microbial communities, which was also an important reason for performance diversity. These results provide a new method for complete p-FNB treatment and a control strategy by ORP regulation for optimal system performance.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Shen D,Zhang X,Feng H,Zhang K,Wang K,Long Y,Wang M,Wang Ydoi
10.1016/j.biortech.2014.08.120subject
Has Abstractpub_date
2014-11-01 00:00:00pages
104-111eissn
0960-8524issn
1873-2976pii
S0960-8524(14)01244-9journal_volume
172pub_type
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