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

IF 4.6 Q2 MATERIALS SCIENCE, BIOMATERIALS
Qin Wang,Xiaobao Zhou,Zhen Zhong,Binbin Wang,Zhuowei Tan,Minghua Zhang,Tangqing Wu
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引用次数: 0

Abstract

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/FADH2 redox feedback cycle.
黄素腺嘌呤二核苷酸(FAD)对脱硫弧菌腐蚀管道焊接接头的影响。
本文研究了厌氧条件下黄素腺嘌呤二核苷酸(FAD)对管道焊接接头(WJ)硫酸盐还原菌(SRB)腐蚀的影响。结果表明,热影响区(HAZ)的腐蚀产物厚度低于母材(BM)和焊接区(WZ),FAD 的添加促进了 WJ 上突出微生物小瘤的发展。BM 和 WZ 试样的局部腐蚀度明显高于 HAZ 试样。此外,在 SRB 接种环境中,FAD 的添加同时促进了 WJ 三个区域的局部腐蚀,并且对 WZ 试样的促进作用更为明显。FAD对WJ中SRB腐蚀的选择性促进作用归因于WZ的特殊结构、SRB的选择性附着以及FAD/FADH2氧化还原反馈循环。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
ACS Applied Bio Materials
ACS Applied Bio Materials Chemistry-Chemistry (all)
CiteScore
9.40
自引率
2.10%
发文量
464
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