Effect of flavin adenine dinucleotide (FAD) on Desulfovibrio desulfuricans corrosion of pipeline welded joint.

Autor: Wang Q; School of Materials Science and Engineering, Xiangtan University, Xiangtan, China., Zhou X; School of Materials Science and Engineering, Xiangtan University, Xiangtan, China., Zhong Z; School of Materials Science and Engineering, Xiangtan University, Xiangtan, China., Wang B; PipeChina Southwest Pipeline Company, Chengdu, China., Tan Z; School of Materials Science and Engineering, Xiangtan University, Xiangtan, China., Zhang M; School of Materials Science and Engineering, Xiangtan University, Xiangtan, China., Wu T; School of Materials Science and Engineering, Xiangtan University, Xiangtan, China.
Jazyk: angličtina
Zdroj: Biofouling [Biofouling] 2024 Oct; Vol. 40 (9), pp. 617-631. Date of Electronic Publication: 2024 Sep 18.
DOI: 10.1080/08927014.2024.2404204
Abstrakt: The impact of Flavin adenine dinucleotide (FAD) on sulfate-reducing bacteria (SRB) corrosion of a pipeline welded joint (WJ) was investigated under anaerobic condition in this paper. The results showed that the thickness of the corrosion product on heat affected zone (HAZ) was lower than that on base metal (BM) and welded zone (WZ), and the FAD addition enhanced the development of the protruding microbial tubercles on the WJ. The local corrosion degrees of the BM and WZ coupons were significantly higher than that of the HAZ coupon. Besides, the FAD addition simultaneously promoted local corrosion of all three zones of the WJ in the SRB inoculated environment, and the promotion role was much more pronounced on the WZ coupons. The selective promotion effect of FAD on SRB corrosion in the WJ was attributed to the special structure of the WZ, the selected SRB attachment and the FAD/FADH 2 redox feedback cycle.
Databáze: MEDLINE