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TY - JOUR
TI - Characterization of the biofilm grown on 304L stainless steel in urban wastewaters: extracellular polymeric substances (EPS) and bacterial consortia
AU - Ziadi, Islem
AU - El-Bassi, Leila
AU - Bousselmi, Latifa
AU - Akrout, Hanene
T2 - Biofouling
AB - Characterization of the biofilm growing on stainless steel (SS) in untreated (UTUWW) and treated (TUWW) urban wastewaters was performed. In both media, the first phase of biofilm growth was aerobic, when the genera Caldimonas, Caulobacter, Terriglobus and Edaphobacter (iron oxidizing bacteria [IOB]) and the genera Bacillus, Sulfurimonas, Syntrophobacter and Desulfobacter (sulfur oxidizing bacteria [SOB]) were identified. In the second phase, established after immersion for 7 days, the high amount of EPS inhibited the access of oxygen and promoted the growth of anaerobic bacteria, which were the genus Shewanella (iron-reducing bacterium [IRB]) and the genera Desulfovirga, Desulfovibrio, Desulfuromusa, Desulfococcus, and Desulfosarcina (sulfate-reducing bacteria [SRB]). Electrochemical measurements showed that in the first stage, the aerobic bacteria and the high amount of EPS delayed the cathodic reduction of oxygen. However, in the second stage, EPS and the anaerobic bacteria promoted anodic dissolution.
DA - 2020/10/22/
PY - 2020
DO - 10.1080/08927014.2020.1836163
DP - Taylor and Francis+NEJM
VL - 0
IS - 0
SP - 1
EP - 13
SN - 0892-7014
ST - Characterization of the biofilm grown on 304L stainless steel in urban wastewaters
UR - https://doi.org/10.1080/08927014.2020.1836163
Y2 - 2020/11/04/16:50:42
KW - Biocorrosion
KW - EPS
KW - corrosive consortia
KW - iron-bacteria
KW - sulphate-bacteria
ER -